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參數(shù)資料
| 型號(hào)： | CM3718C |
| 英文描述： | Low Noise PWM Step-Down Regulator |Battery Management ICs |
| 中文描述： | 低噪音PWM降壓穩(wěn)壓器|電池管理IC |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 146K |
| 代理商： | CM3718C |
CM3718C
1.5A L
OW
-N
OISE
PWM S
TEP
-D
OWN
R
EGULATOR
GENERAL DESCRIPTION
The CM3718C is a low-noise, pulse-width-modulated (PWM),
DC-DC step-down converter. It powers logic and transmitters
in small wireless systems such as cellular phones,
communicating PDAs, and handy-terminals. The device
features an internal synchronous rectifier for high efficiency; it
requires no external Schottky diode. Excellent noise
characteristics and fixed-frequency operation provide easy
post-filtering. The CM3718C is ideally suited for Li-lon battery
applications. It is also useful for +3V or +5V fixed input
applications.
The device operates in one of four modes. Forced PWM
mode operates at a fixed frequency regardless of the load.
Shutdown mode places the device in standby, reducing
quiescent supply current to under 0.1μA.
The CM3718C can deliver over 1.5A. The output voltage can
be adjusted from VREF to VIN. The input range is from 2.0V
to 5.0V. Other features of the CM3718C include high
efficiency, low dropout voltage. It is available in a
space-saving 8-pin SOP package.
APPLICATIONS
2002/11/14
Champion Microelectronic Corporation
Page 1
FEATURES
!
Patented Filed #6,452,366
!
1.2MHz switching and synchronization
!
Dynamic output-voltage adjustment from VREF to VIN
!
1.5A Guaranteed Output Current
!
95% Efficiency
!
No Schottky Diode Required
!
External Soft Start
!
8-pin SOP package.
24 Hours Technical Support---WebSIM
Champion provides customers an online circuit simulation tool
called WebSIM. You could simply logon our website at
www.champion-micro.com for details.
PIN CONFIGURATION
!
Cellular Phone
!
Cordless Phone
!
PDAs and Handy-Terminals
!
CPU I/O Supplies
!
Notebook Chipset Supplies
!
Battery Operated Devices
SOP-8 (S08)
Top View
1
2
3
4
8
7
6
5
VIN
GND
SD
VREF
PVIN
LX
PGND
VFB
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CM3718GIS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:1.5A LOW NOISE PWM STEP DOWN REGULATOR |
| CM3718IS | 制造商:CHAMP 制造商全稱:CHAMP 功能描述:1.5A LOW-NOISE PWM STEP-DOWN REGULATOR |
| CM3728 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2.5G/3G Cellular Phone Buck Regulator|Battery Management ICs |
| CM373 | 制造商:CML 制造商全稱:Chicago Miniature Lamp,inc 功能描述:T-1 3/4 Wedge Base |
| CM37326 | 制造商:CLAROSTAT 功能描述:POT- 5KOHM |
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