Design contains obsolete parts

NCP1529ASNT1GEVB: 0.9 ~ 3.9V @ 1A, 2.7 ~ 5.5V in

Summary

The NCP1529 step−down DC−DC converter is a monolithic integrated circuit for portable applications powered from one cell Li−ion or three cell Alkaline/NiCd/NiMH batteries.

The device – available in an adjustable output voltage from 0.9 V to 3.9 V – is able to deliver up to 1 A. It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built−in 1.7 MHz (nominal) oscillator which reduces component size by allowing a small inductor and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency.

Additional features include integrated soft−start, cycle−by−cycle current limiting and thermal shutdown protection. The NCP1529 is available in a space saving, low profile 2x2 x 0.5 mm UDFN6 package and TSOP−5 package.

Specifications

Manufacturer	onsemi
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	NCP1529ASNT1GEVBOS-ND
Eval Board Supplier	onsemi
Eval Board	Board not Stocked
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	0.9 ~ 3.9 V
Current Out	1 A
Voltage In	2.7 ~ 5.5 V
Efficiency @ Conditions	>90%, 3.6V in, 3.3V @ 10 ~ 600 mA >75%, 3.6V in, 1.2V @ 10 ~ 600 mA >70%, 3.6V in, 0.9V @ 10 ~ 550 mA
Voltage Out Range	0.9 ~ 3.9 V
Features	Current Limit (Adj. or Fixed) ESD Protection PFM or PWM Short Circuit Protection Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	1.7 MHz
Standby Current [Typical]	300 nA
Quiescent Current [Typical]	28 µA
Component Count + Extras	8 + 12
Internal Switch	Yes
Design Author	ONSemiconductor
Application / Target Market	Cell Phones Digital Cameras Portable Devices Tablets USB Powered Devices
Standby Current [Maximum]	1 µA
Quiescent Current [Maximum]	39 µA
Main I.C. Base Part	NCP1529
Date Created By Author	2012-04
Date Added To Library	2016-05