LN1134

High Speed Low Dropout Middle Current Voltage Regulators

■ General Description ■ Features
The LN1134 series are highly precise, positive voltage  Output Voltage Range: 1.0V to 5.0V (selectable in
LDO regulators manufactured using CMOS processes. 100mV steps)
The series achieves high ripple rejection and low dropout  Highly Accurate: ± 2%
and consists of a standard voltage source, an error  Dropout Voltage: 180mV @ 100mA (3.0V type)
amplifier, current limiter and a phase compensation circuit  High Ripple Rejection: 60dB (1 kHz)
plus a driver transistor. Output voltage is selectable in  Low Power Consumption: 70μA (TYP.)
100mV increments within a range of 1.5V ~ 5.0V. The  Maximum Output Current : 300mA
series is also compatible with low ESR ceramic capacitors  Standby Current : less than 0.1μA
which give added output stability. This stability can be  Internal protector: current limiter
maintained even during load fluctuations due to the  Internal discharge MOS
excellent transient response of the series.
■ Applications
The current limiter's feedback circuit also operates as
 Mobile phones
a short protect for the output current limiter and the output
 Cordless phones
pin The CE function enables the output to be turned off,
 Cameras, Video cameras
resulting in greatly reduced power consumption.
 Portable games
■ Package  Portable AV equipment
 SOT23-5L  Reference voltage
 DFN1010-4L  Battery powered equipment
 SOT353
 SOT343

■ Typical Application Circuit

VIN VIN VOUT VOUT

ON/OFF

CIN CE NC COUT

GND

GND GND

Caution: 1. The above connection diagram and constant will not guarantee successful operation. Perform thorough
evaluation using the actual application to set the constant.
2. Input capacitor (CIN): 1.0µF or more, Output capacitor (COUT): 1.0µF or more
3. A general series regulator may oscillate, depending on the external components selected. Check that no
oscillation occurs with the application using the above capacitor.

NO.: NL-QR-830-19 VER: 19C01 1 www.natlinear.com

 LN1134
■ Ordering Information
LN1134 ①②③④⑤⑥-⑦
Designator Symbol Description Designator Symbol Description
CE Pin Logic : Package Type :
A Active 'High' (pull-down resistor built in) M SOT23-5L
① B Active 'High' (no pull-down resistor built in) ⑤ K SOT353
C Active 'Low' (pull-up resistor built in) C SOT343
D Active 'Low' (no pull-up resistor built in) D DFN1010-4L
②③ 10-60 Output Voltage: e.g. 20 = 2.0V, 30 = 3.0Vetc. Device Orientation :
Output Voltage : 100mV increments ⑥ R Standard Feed
2
e.g. ②=3, ③=8, ④=2 represents 3.8V L Reverse Feed
④
Output Voltage : 50mV increments Green epoxy
A ⑦ G
e.g. ②=3, ③=8, ④=A represents 3.85V molding compound

■ Pin Configuration
5 4 4 3 IN CE
4 3
VOUT NC VIN VOUT

VIN GND CE CE GND

1 2
1 2 3 1 2
VOUT GND
SOT23-5L/SOT353 SOT343 DFN1010-4L
(TOP VIEW) (TOP VIEW) (TOP VIEW)

■ Pin Assignment
Pin Number
Pin Name Function
SOT23-5L /SOT353 DFN1010-4L SOT343
1 4 4 VIN Supply power
2 2 2 GND Ground
3 3 1 CE Enable pin
4 - - NC NC
5 1 3 VOUT Voltage output

■ Marking Rule
 SOT23-5L, SOT353, SOT343

①②③④ ①②③④

SOT23-5L/SOT353 SOT343
(TOP VIEW) (TOP VIEW)

NO.: NL-QR-830-19 VER: 19C01 2 www.natlinear.com

 LN1134
① Represents the product name

Symbol Product Name

4 LN1134◆◆◆◆◆◆

② Represents the type of regulator

Voltage(V) 1.0～3.0 3.1～6.0 1.05～3.05 3.15～6.05 Product Name

V A E L LN1134A◆◆◆◆◆
X B F M LN1134B◆◆◆◆◆
Symbol
Y C H N LN1134C◆◆◆◆◆
Z D K P LN1134D◆◆◆◆◆

③ Represents the Output Voltage

Symbol Output Voltage(V) Symbol Output Voltage(V)

0 - 3.1 - 3.15 F 1.6 4.6 1.65 4.65
1 - 3.2 - 3.25 H 1.7 4.7 1.75 4.75
2 - 3.3 - 3.35 K 1.8 4.8 1.85 4.85
3 - 3.4 - 3.45 L 1.9 4.9 1.95 4.95
4 - 3.5 - 3.55 M 2.0 5.0 2.05 5.05
5 - 3.6 - 3.65 N 2.1 - 2.15 -
6 - 3.7 - 3.75 P 2.2 - 2.25 -
7 - 3.8 - 3.85 R 2.3 - 2.35 -
8 - 3.9 - 3.95 S 2.4 - 2.45 -
9 1.0 4.0 1.05 4.05 T 2.5 - 2.55 -
A 1.1 4.1 1.15 4.15 U 2.6 - 2.65 -
B 1.2 4.2 1.25 4.25 V 2.7 - 2.75 -
C 1.3 4.3 1.35 4.35 X 2.8 - 2.85 -
D 1.4 4.4 1.45 4.45 Y 2.9 - 2.95 -
E 1.5 4.5 1.55 4.55 Z 3.0 - 3.05 -

④ Represents the assembly lot no.

0~9, A~Z repeated (G, I, J, O, Q, W excepted)

 DFN1010-4L

①②

NO.: NL-QR-830-19 VER: 19C01 3 www.natlinear.com

 LN1134
① Represents the Output Voltage
Symbol Voltage(V) Symbol Voltage(V) Symbol Voltage(V) Symbol Voltage(V)

A 1.1 K 2.1 U 3.1 5 4.1

B 1.2 L 2.2 V 3.2 6 4.2
C 1.3 M 2.3 W 3.3 7 4.3
D 1.4 N 2.4 X 3.4 8 4.4
E 1.5 O 2.5 Y 3.5 9 4.5
F 1.6 P 2.6 Z 3.6 + 4.6
G 1.7 Q 2.7 1 3.7 - 4.7
H 1.8 R 2.8 2 3.8 * 4.8
I 1.9 S 2.9 3 3.9 ? 4.9
J 2.0 T 3.0 4 4.0 = 5.0
②Represents the assembly lot No.
0~9, A~Z repeated (G, I, J, O, Q, W excepted)

■ Function Block Diagram

VIN

ON/OFF each
CE
Control

Current
Limiter
VOUT

R2

R1
Voltage
Reference GND

■ Absolute Maximum Ratings

Parameter Symbol Maximum Rating Unit
VIN -0.3～+8
Input Voltage
VCE -0.3～VIN+0.3 V
Output Voltage VOUT -0.3～VIN+0.3
SOT23-5L 400
Power Dissipation PD SOT353,SOT343 250 mW
DFN1010-4L 100
Operating Ambient Temperature Topr -40～+85
°C
Storage Temperature Tstg -40～+125
Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical damage.
These values must therefore not be exceeded under any conditions.

NO.: NL-QR-830-19 VER: 19C01 4 www.natlinear.com

 LN1134
■ Electrical Characteristics
(TA=25℃ unless otherwise noted)
Parameter Symbol Condition Min Typ Max Unit

VOUT(S) VOUT(S)
Output Voltage VOUT(E) VIN =VOUT(S)+1.0 V, IOUT=30 mA VOUT(S) V
×0.98 ×1.02

Output Current IOUT VIN≥VOUT(S)+1.0 V 300 - - mA

IOUT=50 mA - 0.1 0.20

Dropout Voltage Vdrop V
IOUT=100 mA - 0.18 0.45

VOUT1 VOUT(S)+0.5 V ≤VIN≤7 V

Line Regulations - 0.10 0.2 %/V
VIN  VOUT IOUT=30 mA
VIN=VOUT(S)+1.0 V
Load Regulation VOUT 2 - 50 100 mV
1.0 mA ≤IOUT ≤100 mA
Output Voltage VOUT VIN=VOUT(S)+1.0 V, IOUT=10 mA
- ±100 - ppm/℃
Temperature Characteristics Ta  VOUT -40°C ≤ Ta ≤85°C
Supply Current ISS1 VIN=VOUT(S)+1.0 V - 70 - μA

Input Voltage VIN - 2.0 - 7.0 V

VIN=VOUT(S)+1.0 V，f=1 kHz

Ripple-Rejection |PSRR| - 60 - dB
Vrip=0.5 Vrms, IOUT=50 mA

Short-circuit Current Ishort VIN=VOUT(S)+1.0 V,VCE on VOUT=gnd - 40 - mA

CE “High” Voltage VCEH - 1.6 - - V

CE “Low” Voltage VCEL - - - 0.8 V

CE “High”Current （no
ICEH VIN=VCE=VOUT(T)+1.0V -0.1 - 0.1 uA
resistor built in）
CE “Low” Current （no
ICEL VIN= VOUT(T)+1.0V, VCE=VSS -0.1 - 0.1 uA
resistor built in）
VIN= VOUT(T)+1V, CL=47uF,
Inrush Current IRUSH VCE=0→VOUT(T)+1V(Only when - - 800 mA
rising and within 1ms)

NO.: NL-QR-830-19 VER: 19C01 5 www.natlinear.com

 LN1134
■ Typical Performance Characteristics (3.3V output)
1. Quiescent Current VS Input Voltage 2. Output Voltage VS Input Voltage

80 3.6
TJ=25℃, VOUT=3.3V TJ=25℃, IL=30mA
Quiescent Current (uA)

70
3.5

Output Voltage (V)

60

3.4
50

40 3.3

30
3.2

20

3.1
10

0 3.0
0 1 2 3 4 5 6 7 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7 6.0 6.3 6.6 6.9

Input Voltage (V) Input Voltage (V)

3. Output Current Limit VS Input Voltage 4. GND Pin Current VS Input Voltage

800 200
TJ=25℃ TJ=25℃, IL=1mA
Output Current Limit (mA)

180
700 GND Pin Current (uA) TJ=25℃, IL=50mA
160 TJ=25℃, IL=100mA
600
140
500 120

400 100

80
300
60
200
40
100 20

0 0
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7

Input Voltage (V) Input Voltage (V)

5. GND Pin Current VS Output Current 6. Quiescent Current VS Temperature

200 160
TJ=25℃, VIN=CE=4.3V VIN=CE=4.3V
Quiescent Current (uA)

180 140
GND Pin Current (uA)

160
120

140
100
120
80
100
60
80

40
60

40 20

20 0
0 100 200 300 400 500 -40 -20 0 20 40 60 80 100 120

Output Current (mA) Temperature (℃)

NO.: NL-QR-830-19 VER: 19C01 6 www.natlinear.com

 LN1134
7. Output Current Limit VS Temperature 8. Output Voltage VS Temperature

1000 3.9
Output Current Limit (mA)

VIN=CE=4.3V VIN=4.3V, IL=30mA

900 3.8

Output Voltage (V)

800 3.7

700 3.6

600 3.5

500 3.4

400 3.3

300 3.2

200 3.1

100 3.0

0 2.9
-40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120

Temperature (℃) Temperature (℃)

9. Dropout Voltage VS Temperature 10. CE "High" Voltage VS Temperature

200 1.30
IL=10mA VIN=4.3V
180 IL=50mA 1.25
Dropout Voltage (mV)

CE "High" Voltage (V)

160 1.20

140 1.15

120 1.10

100 1.05

80 1.00

60 0.95

40 0.90

20 0.85

0 0.80
-40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120

Temperature (℃) Temperature (℃)

11. CE "Low" Voltage VS Temperature 12. Load Regulation VS Temperature

1.2 60
VIN=4.3V VIN=4.3V, IL=1-30mA
1.1 VIN=4.3V, IL=1-100mA
50
CE "Low" Voltage (V)

Load Regulation (mV)

1.0
40
0.9
30
0.8

0.7 20

0.6
10
0.5
0
0.4
-10
0.3

0.2 -20
-40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120

Temperature (℃) Temperature (℃)

NO.: NL-QR-830-19 VER: 19C01 7 www.natlinear.com

 LN1134
13. Input voltage transient response (IL=30mA) 14. Load transient response (IL=0-350-0mA)

15. Load transient response (IL=10-350-10mA) 16. Ripple-Rejection (IL=50mA, Vpp=1V, F=1KHZ)

17. CE Opening Time 18. CE Turn-off Time

19. Inrush Current

NO.: NL-QR-830-19 VER: 19C01 8 www.natlinear.com

 LN1134
■ Application information

VIN VIN VOUT VOUT

ON/OFF

CIN CE NC COUT

GND

GND GND

 Setting the Input Capacitor and the Output Capacitor

Input capacitors（CIN）and output capacitors(COUT) are recommended to use more than 1uF, which can ensure the
stability of the system

 PCB Layout

In order to get better use effect, the main points for attention of PCB layout are as follows:

 The input and output capacitors are as close as possible to the chip pins.

 The wiring of VIN and VOUT should be as thick as possible to reduce the wiring resistance and improve the load
performance.

 The route from GND(pin) to GND uses a dedicated channel to prevent parasitic resistance from introducing into the
change path, which results in incorrect feedback ratio and output error.

NO.: NL-QR-830-19 VER: 19C01 9 www.natlinear.com

 LN1134
■ Package Information
 SOT23-5L

D θ
b 0.2

L
E1

E
e
c
e1

A1

A2

Dimensions In Millimeters Dimensions In Inches

Symbol
Min Max Min Max
A 1.050 1.250 0.041 0.049
A1 0.000 0.100 0.000 0.004
A2 1.050 1.150 0.041 0.045
b 0.300 0.500 0.012 0.020
c 0.100 0.200 0.004 0.008
D 2.820 3.020 0.111 0.119
E 1.500 1.700 0.059 0.067
E1 2.650 2.950 0.104 0.116
e 0.950(BSC) 0.037(BSC)
e1 1.800 2.000 0.071 0.079
L 0.300 0.600 0.012 0.024
θ 0° 8° 0° 8°

NO.: NL-QR-830-19 VER: 19C01 10 www.natlinear.com

 LN1134
 DFN1010-4L

D
E2
D2 b
K 3 4

E C0.12

2 1 L

e
TOP VIEW BOTTOM VIEW

SIDE VIEW

Dimensions In Millimeters Dimensions In Inches
Symbol
Min Max Min Max

A 0.34 0.40 0.013 0.016

b 0.17 0.27 0.007 0.011

D 0.95 1.05 0.037 0.041

E 0.95 1.05 0.037 0.041

D2 0.43 0.53 0.017 0.021

E2 0.43 0.53 0.017 0.021
11
L 0.20 0.30 0.008 0.012

e 0.60 0.70 0.024 0.028

K 0.15 - 0.006 -

NO.: NL-QR-830-19 VER: 19C01 11 www.natlinear.com

 LN1134
 SOT353

θ
D
e1
e

E
E1

L1
0.20
b c

A1

A2

Dimensions In Millimeters Dimensions In Inches

Symbol
Min Max Min Max
A 0.900 1.100 0.035 0.043
A1 0.000 0.100 0.000 0.004
A2 0.900 1.000 0.035 0.039
b 0.150 0.350 0.006 0.014
c 0.080 0.150 0.003 0.006
D 2.000 2.200 0.079 0.087
E 1.150 1.350 0.045 0.053
E1 2.150 2.450 0.085 0.096
e 0.650TYP 0.026TYP
e1 1.200 1.400 0.047 0.055
L 0.525REF 0.021REF
L1 0.260 0.460 0.010 0.018
θ 0° 8° 0° 8°

NO.: NL-QR-830-19 VER: 19C01 12 www.natlinear.com

 LN1134
 SOT343

D
e1
e

E
E1

L1
0.20
b c

A1

A2

Dimensions In Millimeters Dimensions In Inches

Symbol
Min Max Min Max
A 0.900 1.100 0.035 0.043
A1 0.000 0.100 0.000 0.004
A2 0.900 1.000 0.035 0.039
b 0.150 0.350 0.006 0.014
c 0.080 0.150 0.003 0.006
D 2.000 2.200 0.079 0.087
E 1.150 1.350 0.045 0.053
E1 2.150 2.450 0.085 0.096
e 0.650TYP 0.026TYP
e1 1.200 1.400 0.047 0.055
L 0.525REF 0.021REF
L1 0.260 0.460 0.010 0.018
θ 0° 8° 0° 8°

NO.: NL-QR-830-19 VER: 19C01 13 www.natlinear.com