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AP3407 (Obsolete)

1.2A, 1.4MHZ HIGH EFFICIENCY SYNCHRONOUS DC-DC BUCK CONVERTER

Datasheet

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Description

The AP3407/A is a 1.4MHz fixed frequency, current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 1.2A load with high efficiency, excellent line and load regulation. The device integrates synchronous P-channel and N-channel power MOSFET switches with low on-resistance. It is ideal for powering portable equipment that runs from a single Li-ion battery. A standard series of inductors are available from several different manufacturers optimized for use with the AP3407/A. This feature greatly simplifies the design of switch-mode power supplies. The AP3407/A is available in SOT-23-5.

Application(s)

Datacom

Portable Device

Smart Phone

Specifications & Technical Documents

Product Parameters

Efficiency (%)	95
Frequency Typ (Hz)	1400
Frequency Typ (kHz)	1400
HS RDS(ON) (mΩ)	280
LS RDS(ON) (mΩ)	250
MaximumInput Voltage (V)	5.5
Maximum Output Voltage (V)	ADJ
MinimumInput Voltage (V)	2.5
Output Current (A)	1.2
Output Current (A)	1.2
Output Voltage (V)	ADJ
Quiescent Current Typ (μA)	0.062
Shutdown Current Typ (µA)	0.1
Shutdown Current Typ (µA)	0.1
Type	Buck

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

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Product Change Notices (PCNs)

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