Datasheet > NCP1501/D

NCP1501/D

更新时间： 2024-11-22 23:53:23

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NCP1501 Datasheet

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NCP1501/D 数据手册

NCP1501

Dual Mode PWM/Linear

Buck Converter

The NCP1501 is a dual mode regulator that operates either as a

PWM Buck Converter or as a Low Drop Out Linear Regulator. If a

synchronization signal is present, the NCP1501 operates as a current

mode PWM converter with synchronous rectification. The

synchronization signal allows the user to control the location of the

spurious frequency noise generated by a PWM converter. Linear mode

is active when a synchronization signal is not present. The NCP1501

configuration allows an efficient high power operation and low noise

during system sleep modes.

http://onsemi.com

MARKING

DIAGRAM

Micro8E

(MSOP-8)

DM SUFFIX

CASE 846A

1501

AYW

Features

• Synchronous Rectification for Higher Efficiency in PWM Mode

• Linear Mode Operation for Low Noise Output at Low Loads

• Integrated MOSFETs and Feedback Circuits

• Cycle-by-Cycle Peak Current Limit of 800 mA (typ)

• Automatic Switching Between PWM and Linear Mode

• Operating Frequency Range of 500 to 1000 kHz

• Optimized for Ceramic Capacitors and Low Profile Inductors

• Thermal Limit Protection

1501= Device Code

= Assembly Location

= Year

= Work Week

PIN CONNECTIONS

• Built-in Slope Compensation for Current Mode PWM Converter

• Fixed Output Voltages of 1.05, 1.35, 1.57, 1.8

• Shutdown Current Consumption of 0.2 m A

• Internal Soft Start

SHD

SYN

CB0

CB1

GND

• Transistor Count: 3500

Typical Applications

• Cellular Phones

• PDAs

• Pagers

• Supplies for DSP Cores

• Portable Applications

(Top View)

ORDERING INFORMATION

Device

Package

Shipping

NCP1501DMR2

Micro8

4000/Tape & Reel

CB0

CB1

GND

SHD

SYN

out

bat

10 m H

NCP1501

OUT

Figure 1. Typical Applications Circuit

Semiconductor Components Industries, LLC, 2003

Publication Order Number:

April, 2003 - Rev. 6

NCP1501/D

12 3 4 5 6 7...14

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