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AP65550 (Not Recommended for new design)

NRND = Not Recommended for New Design

Inactive Datasheet Archive

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Description

The AP65550 is an adaptive constant on-time mode synchronous buck converter providing high efficiency, excellent transient response and high DC output accuracy for low-voltage regulation in digital TV and monitor.

The constant-on-time control scheme handles wide input/output voltage ratios and provides low external component count. The internal proprietary circuit enables the device to adopt both low equivalent series resistance (ESR) output capacitors, such as SPCAP or POSCAP and ultra-low ESR ceramic capacitors.

The adaptive on-time control supports seamless transition between continuous conduction mode (CCM) at higher load conditions and discontinuous conduction mode (DCM) at lighter load conditions.

DCM allows AP65550 maintain high efficiency at light load conditions. The AP65550 also features programmable soft-start, UVLO, OTP and OCP to protect the circuit.

This IC is available in SO-8EP package.

Application(s)

Gaming Consoles
Flat Screen TV sets and Monitors
Set Top Boxes
Distributed power systems
Home Audio
Consumer electronics
Network Systems
FPGA, DSP and ASIC Supplies
Green Electronics

Product Specifications

Product Parameters

Efficiency (%)	94
Frequency Typ (Hz)	650
HS RDS(ON) (mΩ)	65
LS RDS(ON) (mΩ)	36
MaximumInput Voltage (V)	18
MinimumInput Voltage (V)	4.5
Output Current (mA)	5
Output Voltage (V)	0.76 to 6
Quiescent Current Typ (mA)	0.9
Shutdown Current Typ (µA)	3.6
Type	Buck

Technical Documents

Evaluation Boards and User Guides

AP65550EV1-User-Guide.pdf (221 KB)

AP65550FN-EVM-User-Guide-2014.pdf (346 KB)

AP65550FN-EVM-User-Guide-2018.pdf (379 KB)

AP65550SP-EVM-User-Guide.pdf (255 KB)

Recommended Soldering Techniques

TN1.pdf

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-2519	2021-05-20	2021-11-20	Device End of Life (EOL)
PCN-2512	2021-04-16	2021-07-16	Qualified Additional Assembly & Test (A/T) Site