TDA8133
5.1V +8V REGULATOR WITH DISABLE AND RESET
.. OUTPUT CURRENTS UP TO 0.75A
FIXED PRECISION OUTPUT 1 VOLTAGE
ADVANCE DATA
. 5.1V ± 2%
FIXED PRECISION OUTPUT 2 VOLTAGE
.. 8V ± 2%
OUTPUT 1 WITH RESET FACILITY
. OUTPUT 2 WITH DISABLE BY TTL INPUT
SHORT CIRCUIT PROTECTION AT BOTH
.. OUTPUTS
THERMAL PROTECTION
LOW DROP OUTPUT VOLTAGE
SIP9
(Plastic Package)
DESCRIPTION
The TDA8133 is a monolithic dual positive voltage ORDER CODE : TDA8133
regulator designed to provide fixed precision output
voltages of 5.1V and 8V at currents up to 0.75A.
An internal reset circuit generates a reset pulse
when the output 1 decrease below the regulated
voltage value.
Output 2 can be disabled by TTL input.
Short circuit and thermal protections are included
in all the versions.
PIN CONNECTIONS
9 OUTPUT 1
8 OUTPUT 2
7 N.C.
6 RESET
5 GROUND
4 DISABLE
3 DEL. CAP.
2 INPUT 2
1 INPUT 1
8133-01.EPS
Tab. connected to Pin 5
March 1994 1/5
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
TDA8133
BLOCK DIAGRAM
IN 1 IN 2
1 2
REFERENCE OUT 1 9 OUT 1
6 RESET
PROTECTION RESET
3
DELAY
CAPACITOR
DISABLE 4 DISABLE OUT 2 8 OUT 2
TDA8133
5
8133-02.EPS
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VIN DC Input Voltage Pin 1 20 V
VDIS Disable Input Voltage 20 V
VRST Output Voltage at Pin 6 20 V
IO1, 2 Output Currents Internally Limited
Pt Power Dissipation Internally Limited
8133-01.TBL
o
Tstg Storage Temperature -65 to +150 C
o
Tj Junction Temperature 0 to +150 C
THERMAL DATA
Symbol Parameter Value Unit
o
Rth (j-c) Maximum Thermal Resistance Junction-case 8 C/W
8133-02.TBL
o
Rth (j-a) Maximum Thermal Resistance Junction-ambient 60 C/W
o
Tj Maximum Recommended Junction Temperature 130 C
2/5
TDA8133
ELECTRICAL CHRACTERISTICS (VIN1 = 7V, VIN2 = 10V, Tj = 25oC, unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VO1 Output Voltage IO1 = 10mA 5 5.1 5.2 V
VO2 Output Voltage IO2 = 10mA 7.84 8 8.16 V
VO1 Output Voltage 7V < VIN1 < 14V 4.9 5.3 V
10V < VIN2 < 14V
VO2 Output Voltage 5mA < IO1,2 < 750mA 7.7 8.3 V
VIO1,2 Dropout Voltage IO1,2 = 750mA 1.4 V
VO1,2LI Line Regulation 7V < VIN1 < 14V 50 mV
10V < VIN2 < 14V 80 mV
IO1,2 = 200mA
VO1,2LO Load Regulation 5mA < IO1 < 0.6A 100 mV
5mA < IO2 < 0.6A 160 mV
IQ Quiescent Current IO1 = 10mA 2 mA
Output 2 Disabled
VO1RST Reset Thrseshold Voltage K = VO1 K - 0.4 K- K - 0.1 V
0.25
VRTH Reset Thrseshold Hysteresis See circuit description 20 50 75 mV
tRD Reset Pulse Delay Ce = 100nF 25 ms
See circuit description
VRL Saturation Voltage in Reset Condition I5 = 5mA 0.4 V
IRH Leakage Current in Normal Condition at Pin 6 V5 = 10V 10 µA
o o
KO1,2 Output Voltage Thermal Drift Tj = 0 to 125 C 100 ppm/ C
∆VO ⋅ 106
KO =
∆T ⋅ VO
IO1,2SC Short Circuit Output Current VIN1 = 7V, VIN2 = 10V 1.6 A
VIN1,2 = 16V (see Note) 1 A
VDISH Disable Voltage High (out 2 active) 2 V
VDISL Disable Voltage Low (out 2 disabled) 0.8 V
8133-03.TBL
IDIS Disable Bias Current 0V < VDIS < 7V -100 2 µA
o
Tjsd Junction Temperature for Thermal Shut Down 145 C
Note : Safe permanent short-circuit is only guaranteed for input voltages up to 16V.
CIRCUIT DESCRIPTION
The TDA8133 is a dual voltage regulator with Reset The Reset circuit checks the voltage at the out-
and Disable. put 1. If this one goes below VOUT - 0.25V (4.85V
The two regulation parts are supplied from one typ.), the comparator "a" (see Figure 1) discharges
voltage reference circuit trimmed by zener zap rapidly the capacitor Ce and the reset output goes
during EWS test. at once Low. When the voltage at the out1 rises
Since the supply voltage of this last is connected at above VOUT - 0.2V (4.9V typ.), the voltage VCe
Pin 1 (VIN1), the regulator 2 will not work if Pin 1 is increases linearly to 2.5V corresponding to a delay
not supplied. Ce ⋅ 2.5V
td following the law : t1 = (see Figure 2),
The outputs stage have been realized in darlington 10µA
configuration with a drop typical 1.2V. then the reset output goes high again. To avoid
The disable circuit, switch-off the output 2 if a gliches in the reset output, the second comparator
voltage lower than 0.8V is applied at Pin 4. "b" has a large hysteresis (1.9V).
3/5
TDA8133
Figure 1
10µA
RESET
REF b 6
a -
2.5V +
50 +
OUT 1 9 -
3
REG
Ce
8133-03.EPS
2.5V 0.6V
Figure 2
5.1V
∆Vout LOW
4.9V
4.85V
RESET
8133-04.EPS
TD TD
TYPICAL APPLICATION
RESET
Ce 0.1µF
6 3
V IN1 1 9 V O1
TDA8133
V IN2 2 8 V O2
C1 C2 5 4 C3 C4
DISABLE
8133-05.EPS
C1 to C4 = 10 µF
4/5
TDA8133
PACKAGE MECHANICAL DATA
9 PINS - PLASTIC SIP
D C
L3
c2
L1
N
d1
M
A
L2
a1
1 9
L
b1
PM-SIP9.EPS
b3 e
e3 c1
Millimeters Inches
Dimensions
Min. Typ. Max. Min. Typ. Max.
A 7.1 0.280
a1 2.7 3 0.106 0.118
B 24.8 0.976
b1 0.5 0.020
b3 0.85 1.6 0.033 0.063
C 3.3 0.130
c1 0.43 0.017
c2 1.32 0.052
D 21.2 0.835
d1 14.5 0.571
e 2.54 0.100
e3 20.32 0.800
L 3.1 0.122
L1 3 0.118
L2 17.6 0.693
L3 0.25 0.010
SIP9.TBL
M 3.2 0.126
N 1 0.039
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result
from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics.
Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all
information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life
support devices or systems without express written approval of SGS-THOMSON Microelectronics.
© 1994 SGS-THOMSON Microelectronics - All Rights Reserved
Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips
I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to
the I2C Standard Specifications as defined by Philips.
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