TDA8139
5.1V AND ADJUSTABLE VOLTAGE REGULATOR
WITH DISABLE AND RESET
September 1993
9
8
7
6
5
4
3
2
1
OUTPUT 1
OUTPUT 2
PROGRAM
RESET
GROUND
DISABLE
DELAY CAPACITOR
INPUT 2
INPUT 1
81
39
-
0
1
.
E
P
S
PIN CONNECTIONS
SIP9
(Plastic Package)
ORDER CODE : TDA8139
.
OUTPUT CURRENTS UP TO 750mA
.
FIXED PRECISION OUTPUT 1 VOLTAGE
5.1V
2%
.
OUTPUT 2 VOLTAGE PROGRAMMABLE
FROM 2.8 TO 16V
.
OUTPUT 1 WITH RESET FACILITY
.
OUTPUT 2 WITH DISABLE BY TTL INPUT
.
SHORT CIRCUIT PROTECTION AT BOTH
OUTPUTS
.
THERMAL PROTECTION
.
LOW DROP OUTPUT VOLTAGE
DESCRIPTION
The TDA8139 is a monolithic dual positive voltage
regulator designed to provide precision output volt-
ages of 5.1V and adjustable at currents up to
750mA.
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.
1/5
4
5
8
3
9
1
2
6
OUT 1
IN 2
IN 1
RESET
OUT 2
DISABLE
DELAY
CAPACITOR
REFERENCE
PROTECTION
DISABLE
OUT 1
OUT 2
RESET
TDA8139
8
1
3
9
-0
2
.
EP
S
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
IN
DC Input Voltage Pin 1, 2
20
V
V
DIS
Disable Input Voltage Pin 4
20
V
V
RST
Output Voltage at Pin 6
20
V
I
O1, 2
Output Currents
Internally Limited
P
t
Power Dissipation
Internally Limited
T
STG
Storage Temperature
65 to + 150
C
T
J
unction Temperature
0 to + 150
C
81
39
-
0
1.
T
B
L
THERMAL DATA
Symbol
Parameter
Value
Unit
R
TH(j-c)
Thermal Resistance Junction-case
Max.
8
C/W
T
J
Recommended Junction Temperature
Max.
130
C
81
39
-
0
2
.
T
B
L
ELECTRICAL CHARACTERISTICS ( V
IN
= 7V ; 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
2.8
16
V
V
IO1, 2
Dropout Voltage
I
O1, 2
= 750mA
1.4
V
V
O1
Line Regulation 1
7V < V
IN1
< 14V, 12V < V
IN2
< 18V, @
V
O2
: 10V, I
O1, 2
= 200mA
50
mV
V
O2
Line Regulation 2
100
mV
V
O1
Load Regulation 1
5mA < I
O1, 2
< 0.6A, @ V
O2
= 10 V
100
mV
V
O2
Load Regulation 2
200
mV
I
Q
Quiescent Current
I
O1
= 10mA, Output 2 Disabled
2
mA
V
O1RST
Reset Threshold Voltage
(K = V
O1
)
K 0.4 K .25 K 0.1
V
V
RTH
Reset Threshold Hysteresis
(see circuit description)
20
50
75
mV
t
RD
Reset Pulse Delay at Pin 6
C
e
= 100nF (see circuit description)
25
ms
81
39
-
0
3
.
T
B
L
TDA8139
2/5
ELECTRICAL CHARACTERISTICS ( V
IN
= 7V ; T
j
= 25
o
C unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
RL
Saturation Volt. at Pin 6 in Reset Condition
I
5
= 5mA
0.4
V
I
RH
Leakage Current at Pin 6 in Normal Condition
V
5
= 10V
10
A
K
O1,2
Output Volt. Thermal Drift
K
0
=
V
o
10
6
T
V
O
Tj = 0 to + 125
C
100
ppm/
C
I
O1,2 sc
Short Circ. Ouput Current
V
IN
= 7V
1.6
A
V
IN
= 16V, (see note 1)
1
A
V
DISH
Disable Volt. at Pin 4 High (out 2 active)
2
V
V
DISL
Disable Volt. at Pin 4 Low (out 2 disabled)
0.8
V
I
DIS
Disable Bias Current at Pin 4
0V < V
DIS
< 7V
-100
2
A
V
ref
Pin 7
2.5
V
T
jsd
Junction Temp. for Thermal Shut Down
145
C
Note 1 :
The output short circuit currents are tested one channel at time.
During a short circuit a large consumption of power occurs, but the thermal protection circuit prevents any excessive temperature.
Safe permanent short-circuit is only guaranteed for input voltages up to 16V.
81
39
-
0
4
.
T
B
L
T
D
RESET
VOUT LOW
5.1V
4.9V
4.85V
T
D
8
1
3
9
-0
4
.
EP
S
Figure 2
9
OUT 1
REG
REF
2.5V
-
+
50
a
+
-
3
Ce
2.5V 0.6V
6
b
RESET
10
A
81
39
-
0
3
.
E
P
S
Figure 1
TDA8139
3/5
CIRCUIT DESCRIPTION
The TDA8139 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 the Pin 1 is not supplied.
The outputs stages have been realized in dar-
lington configuration with a drop typical of 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 output
1. If this one goes below V
OUT
- 0.25V (4.85V Typ.),
the comparator "a" (see Figure 1) discharges rap-
idly the capacitor Ce and the reset output goes at
once low. When the voltage at the OUT 1 rises
above V
OUT
-0.2V (4.9V Typ.), the voltage V
Ce
increases linearly to 2.5V corresponding to a delay
t
d
following the low : t
d
=
Ce
2.5
V
10
A
(see figure 2),
then the reset output goes high again. To avoid
glitches in the reset output, the second comparator
"b" has a large hysteresis (1.9V).
6
3
9
8
4
5
2
1
RESET
V
IN2
V
O1
V
IN1
V
O2
Ce
0.1
F
C1
C2
C3
C4
DISABLE
C1 to C4 = 10
F
7
R1
R2
TDA8139
V
O2
=
V
REF
R
1
+
R
2
R
1
typ. val R1 = 2.2
81
39
-
0
5
.
E
P
S
TYPICAL APPLICATION
TDA8139
4/5
B
e3
a1
L1
D
d1
b1
C
b3
N
L
L2
e
c2
c1
1
9
M
L3
A
PM
-S
I
P
9
.
E
P
S
PACKAGE MECHANICAL DATA
9 PINS - PLASTIC SIP
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.
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco
The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
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
P9
.
T
BL
TDA8139
5/5
PDF 
ZIP