Fairchild Semiconductor KA3501
The KA3501 is complete housekeeping circuits for use in the secondary side of SMPS(Switched Mode Power Supply). This IC(Integrated Circuit) contains a precision voltage reference, protection circuits and a power good signal generator. It also has a high current drive output for use in conjunction with an external "crowbar" SCR.- Min Voltage : 5V
- Max Voltage : 32V
- Max Operating Temp : 70°C
- Min Operating Temp : 0°C
Source:
Octopart
| Part No. | KA3501 |
|---|---|
| Datasheet | KA3501 Download |
| Manufacturer |  Fairchild Semiconductor |
| Description | PC SMPS Supervisory IC |
| Buy | Stock & Price |
FEATURES
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● Complete House Keeping Circuit Few External Components Positive Voltage Protection Negative Voltage Protection High Current Drive Output for SCR Precision Voltage Reference for 5V/12V Outputs Power Good Signal Generator with Hysteresis
DESCRIPTION
The reference voltage is trimmed to ±2% for correct output voltages(+5V/ +12V) and power good signal generator is to monitor the voltage level of power good supply for safe operation in a microprocessor circuit. Using the KA3501 requires few external components to accomplish a complete housekeeping circuit for SMPS(Switched Mode Power Supply). The KA3501 is available in an 14-pin DIP. 14-DIP 1 Internal Block Diagram 4 VCC1(+5V) VCC 7 8 Vin1 Positive Voltage Protection START UP +5V Detecting COMP lchg Vin2 5 GATE 6 Feedback 14 2 Vref Negative Voltage Protection 11 PG INTERNAL BIAS VCC Detecting COMP +2.5V REFERENCE VOLTAGE 12 Ve VCC2(+12V) 3 1 Vcont 13 GND 9 Td 10 Timing Rev. 1.0.2 ©2002 Fairchild Semiconductor Corporati...
