L6925D013TR vs PM8903TR
| Part Number |
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| Category | PMIC - Voltage Regulators - DC DC Switching Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators |
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Description | IC REG BUCK ADJ 800MA 8MSOP | IC REG BUCK ADJ 3A 16VFQFPN |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | - | - |
| Operating Temperature | -40°C ~ 150°C (TJ) | -25°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) | 16-VFQFN Exposed Pad |
| Supplier Device Package | 8-MSOP | 16-VFQFPN (3x3) |
| Function | Step-Down | Step-Down |
| Topology | Buck | Buck |
| Output Type | Adjustable | Adjustable |
| Voltage - Output (Min/Fixed) | 0.6V | 0.6V |
| Voltage - Output (Max) | 5.5V | 6V |
| Current - Output | 800mA | 3A |
| Output Configuration | Positive | Positive |
| Number of Outputs | 1 | 1 |
| Frequency - Switching | 600kHz | 1.1MHz |
| Synchronous Rectifier | Yes | Yes |
| Voltage - Input (Min) | 2.7V | 2.8V |
| Voltage - Input (Max) | 5.5V | 6V |
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1. The voltage stabilizer cannot start the manual control mode without voltage adjustment function?
Possible reasons include limit switch failure, boost and down pressure button failure, poor contact of the voltage stabilizer motor power supply, etc. The solution includes replacing the limit switch, checking the connection line, replacing the button, connecting the voltage stabilizer power line, etc.
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2. The voltage stabilizer has no automatic adjustment function?
Possible reasons include sampling transformer damage, control circuit board damage, etc. The solution includes repairing or replacing damaged parts.
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3. The output voltage of the voltage stabilizer deviates from the regulated value?
Possible reasons include no response to the adjustment potentiometer or a broken circuit board. The solution includes replacing the circuit board or potentiometer.
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4. Does the voltage regulator frequently lose power?
Possible reasons include improper adjustment of overvoltage value on control circuit board. The solution is to readjust or repair.
