Datasheet > XC6377CXX3SR

XC6377CXX3SR

更新时间： 2024-11-21 08:01:15

品牌	Logo	应用领域
特瑞仕 - TOREX		转换器
页数	文件大小	规格书
17页	302K
描述
PWM Controlled PWM/PFM Switchable Step-down DC/DC Converters

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XC6377CXX3SR 数据手册

05S_3XC6376/77 02.09.12 15:20 ページ 577

Series

PWM Controlled,PWM/PFM Switchable Step‐down DC/DC Converters

ꢁP-Channel Power MOSFET Built-in

■Applications

ꢀElectronic Information Organizers

ꢁMaximum Output Current : 500mA

ꢀPalmtops

ꢁOutput Voltage Range

ꢁOscillator Frequency

ꢁMaximum Duty Ratio

ꢁHigh Efficiency

: 1.5~6.0V

: 300kHz

: 100%

ꢀCellular and portable phones

ꢀPortable Audio Systems

ꢀVarious Multi-function Power Supplies

: 95%

ꢁSOP-8 Package

■General Description

■Features

The XC6376/77 series are step-down DC/DC converters with built-in P-

channel power MOSFETs. A highly efficient DC/DC converter with output

currents of 500mA can be realised using only four peripherals - a coil, a

diode and 2 capacitors.

Input voltage range : 1.8V~10V

Output voltage range : 1.5V~6.0V programmable in 0.1V steps

( 2.5%)

Oscillator frequency : 300kHz ( 1.5%)

: Custom products for 180, 500kHz

Output voltage can be internally set-up in 0.1V increments ( 2.5%)

between 1.5V and 6.0V (VOUT type). Alternatively, output voltage can be

set-up at will using a 1.0V internal reference voltage source and

peripherals (FB type). It is possible to reduce the size of the peripherals

used since the switching frequency is 300kHz.

Max. output current : 500mA (min.)V^IN=3.6V, VOUT=3.0V

High Efficiency

: 95% (typ.)

Stand-by capability : ISTB=2.5µA (max.)

Soft-start time set-up externally type

The PWM//PFM switchable XC6377 operates in PFM mode during light

loads and is highly efficient from light loads to large output currents.

Required values for soft start time can be regulated via the external

capacitor and the stand-by function reduces supply current to less than

2.5µA.

U.V.L.O, Pch boost, V^OUTreset functions available

Internally set-up output voltage type (VOUT)

Externally set-up output voltage type (FB)

Pchannel Power MOSFET built-in

Package

: SOP-8

U.V.L.O and protection are built-in.

■Typical Application Circuit

■Typical Performance

Characteristic

V^IN

SD1

XC6377A333

�

L＝22μH（CR54）�

C^IN�

（Tantalum）�

100

CE/

VIN＝3.96V

V^OUT

5.0V

CL�

（Tantalum）�

8.0V

Css

0.1

100

1000

Output Current:IOUT（mA）�

577

12 3 4 5 6 7...17

中文翻译

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