L5300EPT

5 V low dropout voltage regulator

Datasheet − production data

Features

Max DC supply voltage VS 40 V

Max output voltage tolerance ΔV0 +/-2 %
Max dropout voltage Vdp 500 mV
Output current I0 300 mA
5 µA(1)
Quiescent current Iqn
55 µA(2)
1. Typical value with regulator disabled
PPAK
2. Typical value with regulator enabled

■ Operating DC supply voltage range

5.6 V to 40 V Description
■ Low dropout voltage
L5300EPT is a low dropout linear regulator with
■ 300 mA current capability ON/OFF control. In addition, only low value
■ Low quiescent current ceramic capacitor is required for stability (above
■ Very low consumption mode or equal 220 nF).
■ Precision output voltage 5 V +/- 2 % Typical quiescent current is 55 µA in light load
conditions. It drops to 5 µA in “not enabled” mode.
■ Thermal shutdown and short-circuit protection
■ Wide temperature range (Tj = -40 °C to 150 °C) On-chip trimming results in high output voltage
accuracy (2 %). Accuracy is kept over wide
■ Enable input for enabling / disabling the voltage temperature range, line and load variations.
regulator
The maximum input voltage is 40 V. The max
output current is internally limited. Internal
temperature protection disables the voltage
regulator output.

Table 1. Device summary

Order codes
Package
Tube Tape and reel
PPAK L5300EPT L5300EPTTR

May 2012 Doc ID 15481 Rev 7 1/24

This is information on a product in full production. www.st.com 1
Contents L5300EPT

Contents

1 Block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4 Package and PCB thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5 Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.1 ECOPACK® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2 PPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.3 PPAK packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2/24 Doc ID 15481 Rev 7

L5300EPT List of tables

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 5. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 6. Enable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 7. PPAK thermal parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 8. PPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 9. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Doc ID 15481 Rev 7 3/24

List of figures L5300EPT

List of figures

Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2. Configuration diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Output voltage vs Tj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4. Output voltage vs VS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 5. Output voltage vs VEn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 6. Drop voltage vs output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 7. Current consumption vs output current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 8. Current consumption vs output current (at light load condition) . . . . . . . . . . . . . . . . . . . . . 10
Figure 9. Current consumption vs input voltage (Io = 0.1 mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 10. Current consumption vs input voltage (Io = 100 mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 11. Current limitation vs Tj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 12. Current limitation vs input voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 13. Short-circuit current vs Tj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 14. Short-circuit current vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 15. VEn_high vs Tj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 16. VEn_low vs Tj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 17. Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 18. Stability region . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 19. Maximum load variation response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 20. PPAK PC board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 21. Rthj-amb vs PCB copper area in open box free air condition . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 22. PPAK thermal impedance junction ambient single pulse . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 23. Thermal fitting model of a Vreg in PPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 24. PPAK dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 25. PPAK suggested pad layout and tube shipment (no suffix) . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 26. PPAK tape and reel shipment (suffix “TR”). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4/24 Doc ID 15481 Rev 7

L5300EPT Block diagram and pins description

1 Block diagram and pins description

Figure 1. Block diagram

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Doc ID 15481 Rev 7 5/24

Block diagram and pins description L5300EPT

Figure 2. Configuration diagram (top view)

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Table 2. Pins description

N° Name Function

1 VS Supply voltage, block directly to GND on the IC with a capacitor.

Enable input. A high signal switches the regulator on. Connect to
2 En
VS if not needed.
3 GND Ground is internally electrically connected to TAB.
4 Nc Not connected
5 V regulated output. Block to GND with a ceramic capacitor
5 Vo
(> 220 nF for regulator stability).

6/24 Doc ID 15481 Rev 7

L5300EPT Electrical specifications

2 Electrical specifications

2.1 Absolute maximum ratings

Stressing the device above the rating listed in the Table 3: Absolute maximum ratings may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
program and other relevant quality documents.

Table 3. Absolute maximum ratings

Symbol Parameter Value Unit

Vsdc DC supply voltage -0.3 to 40 V

Isdc Input current Internally limited
Vodc DC output voltage -0.3 to 6 V
Iodc DC output current Internally limited
VEn Enable input -0.3 to 40 V
Tj Junction temperature -40 to 150 °C
VESD HBM ESD HBM voltage level (HBM-MIL STD 883C) +/- 2 kV
VESD CDM ESD CDM voltage level (CDM- AEC-Q100-011) +/- 750 V

2.2 Thermal data

Table 4. Thermal data
m

Symbol Parameter Value Unit

Rthj-case Thermal resistance junction to case 5 °C/W

Rthj-amb Thermal resistance junction to ambient 45.5 °C/W

Doc ID 15481 Rev 7 7/24

Electrical specifications L5300EPT

2.3 Electrical characteristics

Values specified in this section are for VS = 5.6 V to 31 V, Tj = -40 °C to +150 °C unless
otherwise stated.

Table 5. General
Pin Symbol Parameter Test condition Min. Typ. Max. Unit

VS = 8 V to 18 V
Vo Vo_ref Output voltage 4.9 5.0 5.1 V
Io = 8 mA to 300 mA
VS = 5.6 V to 31V
Vo Vo_ref Output voltage 4.85 5.0 5.15 V
Io = 8 mA to 300 mA
VS = 5.6 V to 31 V
Vo Vo_ref Output voltage 4.75 5.0 5.25 V
Io = 0.1 mA to 8 mA
Vo Ishort Short-circuit current VS = 13.5 V 0.8 1.8 2.6 A
(1)
Vo Ilim Output current capability VS = 13.5 V 0.6 1.6 2.5 A
VS = 6 V to 28 V
VS, Vo Vline Line regulation voltage 40 mV
Io = 50 mA
VS = 13.5 V
Io = 8 mA to 300 mA 40
Vo Vload Load regulation voltage Tj = 25 °C mV
VS = 8 V to 18 V
55
Io = 8 mA to 300 mA
VS, Vo Vdp Drop voltage (2) Io = 300 mA 500 mV
VS, Vo SVR Ripple rejection fr = 100 Hz (3) 60 dB
Normal consumption mode
Vo Ioth_H VS = 8 V to 18 V 8 mA
output current
Very low consumption mode
Vo Ioth_L VS = 8 V to 18 V 1.1 mA
output current
Output current switching
Vo Ioth_Hyst VS = 13.5 V; Tj = 25 °C 0.8 mA
threshold hysteresis
Current consumption with
VS, Vo Iqs regulator disabled VS = 13.5 V; En = low 5 10 µA
Iqs = IVs – Io
Current consumption with VS = 13.5 V,
VS, Vo Iqn_1 regulator enabled Io = 0.1 mA to 1mA, 55 80 µA
Iqn_1 = IVs – Io En = high
Current consumption with
VS = 13.5 V, Io = 300 mA,
VS, Vo Iqn_300 regulator enabled 3 4.2 mA
En = high
Iqn_300 = IVs – Io
Thermal protection
Tw 150 190 °C
temperature
Thermal protection
Tw_hy 10 °C
temperature hysteresis
1. Measured output current when the output voltage has dropped 100 mV from its nominal value obtained at
13.5 V and Io = 75 mA.

8/24 Doc ID 15481 Rev 7

L5300EPT Electrical specifications

2. VS - Vo measured dropout when the output voltage has dropped 100 mV from its nominal value obtained
at 13.5V and Io = 75 mA.
3. Guaranteed by design.

Table 6. Enable
Pin Symbol Parameter Test condition Min. Typ. Max. Unit

En VEn_low En input low voltage 1 V

En VEn_high En input high voltage 3 V
En VEn_hyst En input hysteresis 500 mV
En I_leak Pull down current VEn = 5 V 3 10 µA

Doc ID 15481 Rev 7 9/24

Electrical specifications L5300EPT

2.4 Electrical characteristics curves

Figure 3. Output voltage vs Tj Figure 4. Output voltage vs VS

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Figure 5. Output voltage vs VEn Figure 6. Drop voltage vs output current

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Figure 7. Current consumption vs output Figure 8. Current consumption vs output

current current (at light load condition)

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10/24 Doc ID 15481 Rev 7

L5300EPT Electrical specifications

Figure 9. Current consumption vs input Figure 10. Current consumption vs input

voltage (Io = 0.1 mA) voltage (Io = 100 mA)

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Figure 11. Current limitation vs Tj Figure 12. Current limitation vs input voltage

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Figure 14. Short-circuit current vs input

Figure 13. Short-circuit current vs Tj voltage

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Doc ID 15481 Rev 7 11/24

Electrical specifications L5300EPT

Figure 15. VEn_high vs Tj Figure 16. VEn_low vs Tj

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 6S  6 TO 6 
 6S  6 TO 6


 
 
 
 
 
 
          
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12/24 Doc ID 15481 Rev 7

L5300EPT Application information

3 Application information

3.1 Voltage regulator

The voltage regulator uses a p-channel mos transistor as a regulating element. With this
structure a very low dropout voltage at current up to 300 mA is obtained. The output voltage
is regulated up to input supply voltage of 40 V. The high-precision of the output voltage (2%)
is obtained with a pre-trimmed reference voltage. The voltage regulator automatically adapts
its own quiescent current to the output current level. In light load conditions the quiescent
current goes down to 55 µA only (low consumption mode). This procedure features a certain
hysteresis on the output current (see Figure 8). Short-circuit protection to GND and a
thermal shutdown are provided.

Figure 17. Application schematic

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The input capacitor C 1 ≥ 100 µF is necessary as backup supply for negative pulses which
may occur on the line. The second input capacitor C 2 ≥ 220 nF is needed when the C1 is too
distant from the VS pin and it compensates smooth line disturbances. The C0 ceramic
capacitor, connected to the output pin, is for bypassing to GND the high-frequency noise
and it guarantees stability even during sudden line and load variations. Suggested value is
C 0 = 220 nF with ESR ≥ 100 mΩ .
Stability region is reported in Figure 18.

Doc ID 15481 Rev 7 13/24

Application information L5300EPT

Figure 18. Stability region





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Note:
The curve which describes the minimum ESR is derived from characterization data on the regulator with connected ceramic
capacitors which feature low ESR values (at 100 kHz). Any capacitor with further lower ESR than the given plot value must
be evaluated in each and every case.

Figure 19. Maximum load variation response

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14/24 Doc ID 15481 Rev 7

L5300EPT Application information

3.2 Enable
L5300EPT is also provided by an enable input, a high signal switches the regulator on. In
stand by mode the output is disabled and the current consumption of the device (quiescent
current) is less than 10 µA.

Doc ID 15481 Rev 7 15/24

Package and PCB thermal data L5300EPT

4 Package and PCB thermal data

Figure 20. PPAK PC board

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Note:
Layout condition of Rth and Zth measurements (Board finish thickness 1.6 mm +/- 10%; Board double layer; Board dimension
78x86; Board Material FR4; Cu thickness 0.070mm (front and back side); Thermal vias separation 1.2 mm; Thermal via
diameter 0.3 mm +/- 0.08 mm; Cu thickness on vias 0.025 mm).

Figure 21. Rthj-amb vs PCB copper area in open box free air condition

RTHjamb

90

80

70
RTHjamb
60

50

40

30
0 2 4 6 8 10
PCB Cu heatsink area (cm^2) GAPGCFT00131

16/24 Doc ID 15481 Rev 7

L5300EPT Package and PCB thermal data

Figure 22. PPAK thermal impedance junction ambient single pulse

ZTH (°C/W)
100

Cu=8 cm2
Cu=2 cm2
Cu=f oot print

10

1
0.01 0.1 1 10 100 1000
Time (s)
GAPGCFT00132

Equation 1: pulse calculation formula

Z = R ⋅δ+Z (1 – δ)
THδ TH THtp

where δ = tP/T

Figure 23. Thermal fitting model of a Vreg in PPAK

GAPGCFT 00133

Doc ID 15481 Rev 7 17/24

Package and PCB thermal data L5300EPT

Table 7. PPAK thermal parameter

Area (cm2) Footprint 2 8

R1 (°C/W) 1.2
R2 (°C/W) 6
R3 (°C/W) 7
R4 (°C/W) 10 10 9
R5 (°C/W) 22 15 10
R6 (°C/W) 26 20 15
C1 (W.s/°C) 0.0008
C2 (W.s/°C) 0.0016
C3 (W.s/°C) 0.05
C4 (W.s/°C) 0.2 0.1 0.1
C5 (W.s/°C) 0.27 0.8 1
C6 (W.s/°C) 3 6 9

18/24 Doc ID 15481 Rev 7

L5300EPT Package and packing information

5 Package and packing information

5.1 ECOPACK®
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.

Doc ID 15481 Rev 7 19/24

Package and packing information L5300EPT

5.2 PPAK mechanical data

Figure 24. PPAK dimension

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20/24 Doc ID 15481 Rev 7

L5300EPT Package and packing information

Table 8. PPAK mechanical data

Millimeters
Symbol
Min. Typ. Max.

A 2.20 2.40

A1 0.90 1.10

A2 0.03 0.23

B 0.40 0.60

B2 5.20 5.40

C 0.45 0.60

C2 0.48 0.60

D1 5.1

D 6.00 6.20

E 6.40 6.60

E1 4.7

e 1.27

G 4.90 5.25

G1 2.38 2.70

H 9.35 10.10

L2 0.8 1.00

L4 0.60 1.00

L5 1.00

L6 2.80

R 0.2

V2 0° 8°

Package weight Gr. 0.3

Doc ID 15481 Rev 7 21/24

Package and packing information L5300EPT

5.3 PPAK packing information

Figure 25. PPAK suggested pad layout and tube shipment (no suffix)
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Figure 26. PPAK tape and reel shipment (suffix “TR”)

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22/24 Doc ID 15481 Rev 7

L5300EPT Revision history

6 Revision history

Table 9. Document revision history

Date Revision Changes

12-Jul-2007 1 Initial release.

Changed features table on the cover page
Table 5: General
13-Mar-2009 2
– Vo_ref: deleted row and added 3 new rows
Updated Table 6: Enable
Updated corporate template from V2 to V3
Changed the title of the document
Features in cover page
Changed typical quiescent current value from 60 µA to 55 µA
Description in cover page
– Changed typical quiescent current value from 60 µA to 55 µA
– Changed dropped current value from 10 µA to 5 µA
Table 2: Pins description
– Updated pins sequence
Table 3: Absolute maximum ratings
– ISDC: changed symbol from IVSDC
– IODC: changed symbol from IVODC
– VESD CDM: added standard for parameter
Updated Table 4: Thermal data
20-Sep-2010 3 Table 5: General
– Ishort: changed min/typ/max value
– Ilim: changed min/typ/max value, changed parameter
– Vline: changed test condition
– Vload: changed test condition, added new spec.
– SVR: deleted min value, added typ value
– Iqn_300: changed typ/max value
– Ioth_H, Ioth_L, Ioth_Hyst: added new rows
– Updated all tablefootnote
Table 6: Enable
– Ileak: changed typ value
Deleted Figure 3: Behavior of output current versus regulated
voltage Vo
Added Section 2.4: Electrical characteristics curves
Added Chapter 4: Package and PCB thermal data
12-Oct-2010 4 Updated Section 3.1: Voltage regulator
27-Jan-2012 5 Updated Figure 18: Stability region on page 14.
07-Feb-2012 6 Modified Figure 18: Stability region on page 14
Updated Figure 24: PPAK dimension on page 20 and Table 8: PPAK
04-May-2012 7
mechanical data

Doc ID 15481 Rev 7 23/24

 L5300EPT

Please Read Carefully:

Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
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