Diodes Incorporated — Analog and discrete power solutions
SO 8EP

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AP3503

340kHZ 3A SYNCHRONOUS DC-DC BUCK CONVERTER

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Description

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.

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
Maximum Output Voltage (V) ADJ
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

Related Content

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Technical Documents

Recommended Soldering Techniques

TN1.pdf