March 1994
5.1V +8V REGULATOR WITH DISABLE AND RESET
ADVANCE DATA
TDA8133
.
OUTPUT CURRENTS UP TO 0.75A
.
FIXED PRECISION OUTPUT 1 VOLTAGE
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
1
2
3
4
5
6
7
8
9
DEL. CAP.
DISABLE
RESET
N.C.
OUTPUT 2
OUTPUT 1
INPUT 1
INPUT 2
GROUND
Tab. connected to Pin 5
8
1
3
3
-0
1
.
EPS
PIN CONNECTIONS
SIP9
(Plastic Package)
ORDER CODE : TDA8133
DESCRIPTION
The TDA8133 is a monolithic dual positive voltage
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.
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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ELECTRICAL CHRACTERISTICS (V
IN1
= 7V, V
IN2
= 10V, T
j
= 25
o
C, unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
O1
Output Voltage
I
O1
= 10mA
5
5.1
5.2
V
V
O2
Output Voltage
I
O2
= 10mA
7.84
8
8.16
V
V
O1
Output Voltage
7V < V
IN1
< 14V
10V < V
IN2
< 14V
5mA < I
O1,2
< 750mA
4.9
5.3
V
V
O2
Output Voltage
7.7
8.3
V
V
IO1,2
Dropout Voltage
I
O1,2
= 750mA
1.4
V
V
O1,2LI
Line Regulation
7V < V
IN1
< 14V
10V < V
IN2
< 14V
I
O1,2
= 200mA
50
80
mV
mV
V
O1,2LO
Load Regulation
5mA < I
O1
< 0.6A
5mA < I
O2
< 0.6A
100
160
mV
mV
I
Q
Quiescent Current
I
O1
= 10mA
Output 2 Disabled
2
mA
V
O1RST
Reset Thrseshold Voltage
K = V
O1
K - 0.4
K -
0.25
K - 0.1
V
V
RTH
Reset Thrseshold Hysteresis
See circuit description
20
50
75
mV
t
RD
Reset Pulse Delay
C
e
= 100nF
See circuit description
25
ms
V
RL
Saturation Voltage in Reset Condition
I
5
= 5mA
0.4
V
I
RH
Leakage Current in Normal Condition at Pin 6
V
5
= 10V
10
A
K
O1,2
Output Voltage Thermal Drift
T
j
= 0 to 125
o
C
K
O
=
V
O
10
6
T
V
O
100
ppm/
o
C
I
O1,2SC
Short Circuit Output Current
V
IN1
= 7V, V
IN2
= 10V
V
IN1,2
= 16V (see Note)
1.6
1
A
A
V
DISH
Disable Voltage High (out 2 active)
2
V
V
DISL
Disable Voltage Low (out 2 disabled)
0.8
V
I
DIS
Disable Bias Current
0V < V
DIS
< 7V
-100
2
A
T
jsd
Junction Temperature for Thermal Shut Down
145
o
C
Note : Safe permanent short-circuit is only guaranteed for input voltages up to 16V.
813
3-
03
.
T
B
L
The TDA8133 is a dual voltage regulator with Reset
and Disable.
The two regulation parts are supplied from one
voltage reference circuit trimmed by zener zap
during EWS test.
Since the supply voltage of this last is connected at
Pin 1 (V
IN1
), the regulator 2 will not work if Pin 1 is
not supplied.
The outputs stage have been realized in darlington
configuration with a drop typical 1.2V.
The disable circuit, switch-off the output 2 if a
voltage lower than 0.8V is applied at Pin 4.
The Reset circuit checks the voltage at the out-
put 1. If this one goes below V
OUT
- 0.25V (4.85V
typ.), the comparator "a" (see Figure 1) discharges
rapidly the capacitor C
e
and the reset output goes
at once Low. When the voltage at the out1 rises
above V
OUT
- 0.2V (4.9V typ.), the voltage V
Ce
increases linearly to 2.5V corresponding to a delay
td following the law : t
1
=
C
e
2.5V
10
A
(see Figure 2),
then the reset output goes high again. To avoid
gliches in the reset output, the second comparator
"b" has a large hysteresis (1.9V).
CIRCUIT DESCRIPTION
TDA8133
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B
e3
a1
L1
D
d1
b1
C
b3
N
L
L2
e
c2
c1
1
9
M
L3
A
PM
-SI
P9
.
EPS
PACKAGE MECHANICAL DATA
9 PINS - PLASTIC SIP
Dimensions
Millimeters
Inches
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
M
3.2
0.126
N
1
0.039
SI
P
9
.
T
BL
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 I
2
C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips
I
2
C Patent. Rights to use these components in a I
2
C system, is granted provided that the system conforms to
the I
2
C Standard Specifications as defined by Philips.
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TDA8133
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