STV8131 [STMICROELECTRONICS]
5V AND 8V VOLTAGE REGULATOR; 5V和8V电压稳压器
| 型号： | STV8131 |
| 厂家： | 
ST |
| 描述： | 5V AND 8V VOLTAGE REGULATOR |
| 文件： | 总5页 (文件大小：71K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
STV8131
5V AND 8V VOLTAGE REGULATOR
PRODUCT PREVIEW
FEATURES
■ Output Currents up to 1A
■ Fixed Precision Output 1 Voltage 5V ± 2%
■ Fixed Precision Output 2 Voltage 8V ± 2%
■ Output 1 with Disable by TTL Input
■ Output 2 with Disable by TTL Input
■ Short Circuit Protection at both Outputs
■ Thermal Protection
■ Low Drop Output Voltage
DESCRIPTION
The STV8131 is a monolithic dual positive voltage
regulator designed to provide fixed precision out-
put voltages of 5V and 8V at currents up to 1A.
Each output can be disabled separately by a TTL
input.
HEPTAWATT
(Plastic Package)
Short circuit and thermal protections are included.
ORDER CODES: STV8131
Figure 1. Pin Connections
7
OUTPUT 1
6
5
4
3
2
1
OUTPUT 2
DISABLE FOR OUTPUT 1
GROUND
DISABLE FOR OUTPUT 2
INPUT 2
INPUT 1
Tab connected to Pin 4
September 2003
1/5
This is preliminary information on a new product now in development. Details are subject to change without notice.
1
STV8131
Figure 2. Block Diagram
INPUT 1
1
INPUT 2
2
OUTPUT 1
REFERENCE
7
OUTPUT 1
PROTECTION
DISABLE
DISABLE
5
6
DISABLE
OUTPUT 2
3
DISABLE
OUTPUT 2
STV8131
4
CIRCUIT DESCRIPTION
The STV8131 is a dual voltage regulator with sep-
arate Disable for each output.
The outputs stage have been realized in darlington
configuration with a drop typical 1.2V.
The two regulation parts are supplied from one
voltage reference circuit trimmed by zener zap
during EWS test.
For each output a disable circuit switches-off this
output if a voltage lower than 0.8V is applied at
corresponding Pin (Pin 3 for output 2, Pin 5 for out-
put 1).
Since the supply voltage of this last is connected
at Pin 1 (V ), the regulator 2 will not work if Pin 1
IN1
is not supplied.
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
DC Input Voltage Pin 1
Value
20
Unit
V
V
IN
V
Disable Input Voltage Pin 3-5
Output Currents
20
V
DIS
I
Internally Limited
Internally Limited
- 65 to + 150
0 to + 150
O1, 2
P
Power Dissipation
t
T
Storage Temperature
unction Temperature
°C
°C
STG
T
J
THERMAL DATA
Symbol
Parameter
Value
3
Unit
°C/W
°C
R
(j-c)
Thermal Resistance Junction-case
Recommended Junction Temperature
Max.
Max.
TH
T
130
J
2/5
1
STV8131
ELECTRICAL CHARACTERISTICS (V = 7V, V = 10V, T = 25°C unless otherwise specified)
IN1
IN2
J
Symbol
Parameter
Test Conditions
= 10mA
Min. Typ. Max.
Unit
V
V
V
Output Voltage
Output Voltage
I
I
4.9
5
8
5.1
O1
O2
O1
= 10mA
7.84
8.16
V
O2
5mA < I 2 < 750mA
O1
V
V
O1
O2
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
7V < V
< 14V
4.8
7.7
5.2
8.3
V
V
IN1
10V < V
< 14V
IN2
1.4
2
V
V
I
I
2 = 750mA
2 = 1A
O1
O1
V
IO1, 2
7V < V
< 14V
IN1
50
80
mV
mV
V
10V < V
< 14V
O1, 2LI
IN2
I
2 = 200mA
O1
100
160
mV
mV
5mA < I < 0.6A
O1
V
O1, 2LO
5mA < I < 0.6A
O2
I
= 10mA
O1
I
Quiescent Current
2
mA
Q
Output 2 Disabled
∆V0 106
K0 = ------------------------
∆T V0
o
K
Output Voltage Thermal Drift
100
ppm/ C
O1, 2
Tj = 0 to + 125°C
1.6
1
A
A
V
V
= 7V, V
= 16V (see Note)
= 10V
IN2
IN1
IN2
I
Short Circuit Output Current
O1, 2SC
Disable Voltage High (corresponding out
active)
V
2
V
DISH
Disable Voltage Low (corresponding out
disabled)
V
I
0.8
2
V
DISL
Disable Bias Current
0V < V
< 7V
-30
µA
DIS
DIS
o
T
Junction Temperature for Thermal Shut Down
145
C
jsd
Note: Safe permanent short-circuit is only guaranteed for input voltages up to 16V.
Figure 3. Typical Application
DISABLE
FOR
OUTPUT 1
DISABLE
FOR
OUTPUT 2
3
5
1
2
7
6
VIN1
VIN2
VO1
VO2
STV8131
C1
C2
C3
C4
4
m
C1 to C4 = 10 F
3/5
1
STV8131
PACKAGE MECHANICAL DATA
9-PINS - PLASTIC HEPTAWATT
Figure 4. 9-Pin Package
Millimeters
Inches
Typ.
Dimensions
Min.
Typ.
Max.
4.8
Min.
Max.
0.189
0.054
0.110
0.053
0.022
0.031
0.035
0.105
0.205
0.307
0.409
0.409
A
C
1.37
2.8
D
2.4
1.2
0.094
0.047
0.014
0.024
D1
E
1.35
0.55
0.8
0.35
0.6
F
F1
G
0.9
2.41
4.91
7.49
2.54
5.08
7.62
2.67
5.21
7.80
10.4
10.40
0.095
0.193
0.295
0.100
0.200
0.300
G1
G2
H2
H3
L
10.05
0.396
16.97
14.92
21.54
22.62
0.668
0.587
0.848
0.891
L1
L2
L3
L5
L6
L7
M
2.6
15.10
6.0
3.0
15.80
6.6
0.102
0.594
0.236
0.118
0.622
0.260
2.8
0.110
0.200
M1
Dia.
5.08
3.65
3.85
0.144
0.152
4/5
1
STV8131
Information furnished is believed to be accurate and reliable. However, STMicroelectronics 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 license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without the express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
2003 STMicroelectronics - All Rights Reserved.
Purchase of I2C Components by STMicroelectronics conveys a license under the Philips I2C Patent. Rights to use these components in an
I2C system is granted provided that the system conforms to the I2C Standard Specification as defined by Philips.
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5/5
1
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