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2022-09-24 23:33:15
AP2004-PWM Buck Controller
Features
- PWM step-down control circuit
- Operating voltage up to 27V
- Under Voltage Lockout (UVLO) Protection
- Short Circuit Protection (SCP)
- Soft start circuit
- Variable oscillator frequency - max at 300KHz
- 1.25V reference voltage output
- 8-pin PDIP and SOP packages
application
- Backlight inverter
- LCD Monitor
- XDROM, XDSL products
- DC/DC converters, computers, etc.
The AP2004 integrates Pulse Width Modulation (PWM) into a single chip control circuit, the main power regulator design. All features include an on-chip 1.25V reference voltage output, error amplifier, adjustable oscillator, soft-start, UVLO, SCP circuit and push-pull output circuit. The switching frequency is trimmed by CT regulation. In low voltage conditions, UVLO, ensures that the output is turned off until the internal circuitry operates normally.