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AP3503F (Not Recommended for New Design (NRND))

NRND = Not Recommended for New Design

340kHz, 3A Synchronous DC-DC Buck Converter

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Description

The AP3503F 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 AP3503F 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.

Application(s)

LCD TV

Set Top Box

Portable DVD

Digital Photo Frame

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP)	Standard
Type	Buck
Minimum Input Voltage (V)	4.5
Maximum Input Voltage (V)	18
Output Current (A)	3
Minimum Output Voltage (V)	0.925
Maximum Output Voltage (V)	15
Quiescent Current Typ (µA)	1200
Shutdown Current Typ (µA)	0.1
Frequency Typ (kHz)	340
HS RDS(ON) (mΩ)	100
LS RDS(ON) (mΩ)	100

Technical Documents

Recommended Soldering Techniques

TN1.pdf