NCP1550 - 600 kHz PWM/PFM Step-Down DC-DC Controller

General Description

1 CE Chip Enable pin, active high (internal pullup current source).

By connecting this pin to GND, the switching operation of the controller will be stopped.

Output voltage monitoring input.

Key Features

of Chip Enable to reduce IC Off.
State current and integrated feedback resistor network, make it the best choice for portable.

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NCP1550 600 khz pwm/pfm step-down dc-dc controller by ON - Datasheet Preview

Datasheet Details

Part number	NCP1550
Manufacturer	ON
File Size	197.67 KB
Description	600 kHz PWM/PFM Step-Down DC-DC Controller
Datasheet	NCP1550 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NCP1550 600 kHz PWM/PFM Step−Down DC−DC Controller The NCP1550 is a monolithic micropower high frequency voltage mode step−down controller IC, specially designed for battery operated hand−held electronic products. With appropriate external P−type MOSFET, the device can provide up to 2.0 A loading current with high conversion efficiency. The device operates in Constant−Frequency PWM mode at normal operation, that ensures low output ripple noise, and which will automatically switch to PFM mode at low output loads for higher efficiency. Additionally, value−added features of Chip Enable to reduce IC Off−State current and integrated feedback resistor network, make it the best choice for portable applications.