STV8131
5V AND 8V VOLTAGE REGULATOR
PRODUCT PREVIEW
FEATURES s Output Currents up to 1A s Fixed Precision Output 1 Volt...
STV8131
5V AND 8V VOLTAGE
REGULATOR
PRODUCT PREVIEW
FEATURES s Output Currents up to 1A s Fixed Precision Output 1 Voltage 5V ± 2% s Fixed Precision Output 2 Voltage 8V ± 2% s Output 1 with Disable by TTL Input s Output 2 with Disable by TTL Input s Short Circuit Protection at both Outputs s Thermal Protection s Low Drop Output Voltage
DESCRIPTION The STV8131 is a monolithic dual positive voltage
regulator designed to provide fixed precision output voltages of 5V and 8V at currents up to 1A. Each output can be disabled separately by a TTL input. Short circuit and thermal protections are included.
HEPTAWATT (Plastic Package) ORDER CODES: STV8131
Figure 1. Pin Connections
7 6 5 4 3 2 1 Tab connected to Pin 4
OUTPUT 1 OUTPUT 2 DISABLE FOR OUTPUT 1 GROUND DISABLE FOR OUTPUT 2 INPUT 2 INPUT 1
8131-01.eps
September 2003
This is preliminary information on a new product now in development. Details are subject to change without notice.
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1
STV8131
Figure 2. Block Diagram
INPUT 1
INPUT 2
1
REFERENCE
2
OUTPUT 1
7
OUTPUT 1
PROTECTION
DISABLE
5
DISABLE
DISABLE
3
DISABLE
OUTPUT 2
6
OUTPUT 2
4
CIRCUIT DESCRIPTION The STV8131 is a dual voltage
regulator with separate Disable for each output. 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 (VIN1), the
regulator 2 will not work if Pin 1 is not supplied. ABSOLUTE MAXIMUM RATINGS
Symbol VIN VDIS...