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APW7165 / APW7145 / APW7302 / APW7120 / APW7142 / APW7301 PWM Controller IC — SOP-8 (5-Pack)
APW7165 / APW7145 / APW7302 / APW7120 / APW7142 / APW7301 PWM Controller IC SOP-8 (5-Pack)
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APW7165 / APW7145 / APW7302 / APW7120 / APW7142 / APW7301 PWM Controller IC — SOP-8 (5-Pack)
The APW71xx and APW73xx series are SOP-8 PWM controller ICs from Anpec Electronics, designed for synchronous buck DC-DC converter applications in LCD monitors, LCD TVs, and consumer electronics power supplies. They integrate voltage-mode or current-mode PWM control with comprehensive protection (OCP, OVP, thermal shutdown) and are widely used as repair replacements in LCD power board SMPS stages.
Variant Overview
| Part Number | Topology | Key Feature | Common Application |
|---|---|---|---|
| APW7165 | Synchronous buck | 5V/12V dual output | LCD monitor logic supply |
| APW7145 | Synchronous buck | High efficiency, wide input | LCD TV power board |
| APW7302 | Synchronous buck | Adjustable frequency | General SMPS design |
| APW7120 | Synchronous buck | Low quiescent current | Standby power supply |
| APW7142 | Synchronous buck | Integrated gate driver | LCD backlight supply |
| APW7301 | Synchronous buck | High current capability | High-power LCD supply |
Key Specifications (All Variants)
| Parameter | Value |
|---|---|
| Package | SOP-8 (SMD) |
| Topology | Synchronous buck PWM controller |
| Protection | OCP, OVP, thermal shutdown, soft-start, UVLO |
| Operating Temperature | -40°C to +85°C |
| Quantity | 5 pieces |
Why Choose APW71xx / APW73xx Series?
- LCD-specific design — optimized for the power sequencing and load profiles of LCD monitor and TV power boards
- Full protection suite — OCP/OVP/thermal/UVLO/soft-start prevents cascade failure during repair
- SOP-8 footprint — direct replacement on existing LCD power board layouts
- Wide variant coverage — one listing covers the most common APW7xxx repair ICs
- 5-pack value — sufficient for multiple LCD repair jobs
Compatible With / Common Repair Applications
- LCD monitor power board: 17–27 inch LCD monitor SMPS logic supply stage (Samsung, LG, Dell, AOC, Philips)
- LCD TV power board: 32–55 inch LCD TV main power board step-down stage
- No-power fault: Monitor powers on briefly then shuts off, or no power — common symptom of failed APW7xxx IC
- Voltage rail missing: 5V or 12V logic rail absent on power board — check APW7xxx and associated MOSFETs
Frequently Asked Questions
Q: How do I identify which APW7xxx variant is on my LCD power board?
A: Read the markings on the original IC under magnification or with a loupe. The full part number is printed on the SOP-8 body (e.g., “APW7165” or “7165” abbreviated). Cross-reference with the board service manual or schematic if available. APW7165 is the most common variant in 19–24 inch LCD monitors.
Q: What other components should I check when replacing APW7xxx on an LCD power board?
A: When replacing APW7xxx, also inspect: (1) the external power MOSFETs (often shorted when the controller fails), (2) bootstrap capacitor (typically 100nF ceramic), (3) output electrolytic capacitors (bulging = replace), (4) current-sense resistor for open circuit. Replacing only the IC without checking these often results in the new IC failing again.
Q: Can APW7302 replace APW7165 in an existing LCD power board?
A: Only if the pinout and specifications match. APW71xx and APW73xx variants are not universally pin-compatible. Always compare the datasheet pinout of the original IC with the replacement before substituting. Verify input voltage range, switching frequency, and gate drive compatibility.
Package Contents
- 5× APW7165 / APW7145 / APW7302 / APW7120 / APW7142 / APW7301 PWM Controller IC (SOP-8) — variant as selected
