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See Technical Specifications

NCP1529MUTBG +BOM

Buck Converter, DC-DC, High Efficiency, Adjustable Output Voltage, Low Ripple, 1.7 MHz, 1 A

Manufacturer:

onsemi
Mfr.Part #:

NCP1529MUTBG
Datasheet:

NCP1529MUTBG Datasheet (PDF)
Function:

Step-Down
Output Configuration:

Positive
Topology:

Buck
Output Type:

Adjustable
EDA/CAD Models:

Request Free CAD Models for NCP1529MUTBG

NCP1529MUTBG General Description

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 is able to deliver up to 1.0 A on an output range externally adjustable from 0.9 V to 3.9 V or fixed at 1.2 V or 1.35 V.
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 2x2x0.5 mm UDFN6 package and TSOP-5 package.

Key Features

96% efficiency, 28 uA quiescent current, 0.3 uA shutdown current
1.7 MHz switching frequency
Auto-switching between PWM and PFM mode at light load conditions
Adjustable output voltage from 0.9V to 3.9V
Best in class Low Ripple even in PFM mode

Application

Battery powered applications power management
Power supply for processor with low core voltage
USB powered devices
Low Voltage DC rails power management

Specifications

Function	Step-Down	Output Configuration	Positive
Topology	Buck	Output Type	Adjustable
Number of Outputs	1	Voltage - Input (Min)	2.7V
Voltage - Input (Max)	5.5V	Voltage - Output (Min/Fixed)	0.9V
Voltage - Output (Max)	3.9V	Current - Output	1A
Frequency - Switching	1.7MHz	Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 85°C (TA)	Mounting Type	Surface Mount