Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SO-8EP
340kHZ 3A SYNCHRONOUS DC-DC BUCK CONVERTER
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The AP3503 is a 340kHz fixed frequency, current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 3A load with high efficiency, excellent line and load regulation. The device integrates N-channel power MOSFET switches with low on-resistance. Current mode control provides fast transient response and cycle-by-cycle current limit. The AP3503 employs complete protection to ensure system security. Including output Over Voltage Protection, input Under Voltage LockOut, programmable soft-start, Over Temperature Protection to safeguard the circuit. This IC is available in PSOP-8 package.
Compliance (Only Automotive Supports PPAP) |
Standard |
|---|---|
Type |
Buck |
HS RDS(ON) (mΩ) |
100 |
LS RDS(ON) (mΩ) |
100 |
MaximumInput Voltage (V) |
18 |
MinimumInput Voltage (V) |
4.5 |
Quiescent Current Typ (μA) |
1200 |
Shutdown Current Typ (µA) |
0.1 |
Output Current (A) |
3 A |
Maximum Output Voltage (V) |
ADJ |
Frequency Typ (kHz) |
340 |
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A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
| PCN # | Issue Date | Implementation Date | Subject |
|---|---|---|---|
| PCN-2770 | 2025-10-30 | 2025-10-30 | Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products |
