SGS Thomson Microelectronics TDA8138B, TDA8138A, TDA8138 Datasheet
5.1V +12V REGULATOR WITH DISABLE AND RESET
.
OUTPUT CURRENTS UP TO 1A
.
FIXED PRECISION OUTPUT 1 VOLTAGE
5.1V +/- 2%
.
FIXED PRECISION OUTPUT 2 VOLTAGE
12V +/- 2%
.
OUTPUT 1 WI T H RE S ET FAC ILITY
.
OUTPUT 2 WITH DISABLE BY TTL INPUT
.
SHORT CIRCUIT PROTECTION AT BOTH
OUTPUTS
.
THERMAL PROTE CTION
.
LOW DROP OUTPUT VOLTAGE
.
AVAILABLE ALSO IN HEPTAWATT PACKAGE
IN TWO VERSIONS : TDA8138A (DISABLE
ONLY), TDA8138B (RESET ONLY)
DESCRIPTION
The TDA8138 is a monolithic dual positive v oltage
regulator designed to provide fixed precision output
voltages of 5.1V and 12V at currents up to 1A.
An internal reset circuit generates a reset pulse
when the output 1 decrease below the regulated
voltage value (for TDA8138 and TDA8138B).
Output 2 can be disabled by TTL input (for
TDA8138 and TDA8138A).
Short circuit and thermal protections are included
in all the versions.
TDA8138
SIP9
(Plastic Package)
ORDER CODE : TDA8138
HEPTAWAT
(Plastic Package)
ORDER CODE : TDA8138A / TDA8138B
PIN CONNECTIONS
SIP9
9
8
7
6
5
4
3
2
1
Tab. connected to Pin 5
May 1993
OUTPUT 1
OUTPUT 2
N.C.
RESET
GROUND
DISABLE
DEL. CAP.
INPUT 2
INPUT 1
HEPTAWATT
7
6
5
4
3
2
1
Tab. connected to Pin 4
OUTPUT1
OUTPUT2
N.C. FOR TDA8138A
RESET FOR TDA8138B
GROUND
DISABLEFOR TDA8138A
DEL. CAPA FOR TDA8138B
INPUT 2
INPUT 1
8138-01A.EPS - 8138-01B.EPS
1/6
TDA8138
BLOCK DIAGRAM (SIP9 package)
IN 2IN 1
12
DISABLE
REFERENCE
PROTECTION
4
DISABL E
5
OUT 1
RESET
OUT 2
TDA8138
OUT 1
9
6
RESET
3
DELAY
CAPACITOR
8
OUT 2
ABSOLUTE MAXIMUM RATING S
Symbol Parameter Value Unit
V
V
V
I
O1, 2
T
IN
DIS
RST
P
stg
T
DC Input Voltage Pin 1 20 V
Disable Input Voltage Pin 3 (Heptawatt) or Pin 4 (SIP9) 20 V
Output Voltage at Pin 6 (SIP9) or Pin 5 (Heptawatt) 20 V
Output Currents Internally Limited
Power Dissipation Internally Limited
t
Storage Temperature -65 to +150
Junction Temperature 0 to +150
j
8138-02.EPS
o
C
o
C
8138-01.TBL
THERMAL D ATA
Symbol Parameter Value Unit
2/6
R
R
th (j-c)
th (j-a)
T
j
Maximum Thermal Resistance Junction-case for SIP9
Maximum Thermal Resistance Junction-case for Heptawatt
Maximum Thermal Resistance Junction-ambient for SIP9 60
Maximum Recommended Junction Temperature 130
8
3
o
C/W
o
C/W
o
C/W
o
C
8138-02.TBL
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