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參數資料
| 型號： | CM3718GIS |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 1.5A LOW NOISE PWM STEP DOWN REGULATOR |
| 中文描述： | 1.5A的低噪音PWM降壓調節 |
| 文件頁數： | 1/10頁 |
| 文件大?。?/td> | 361K |
| 代理商： | CM3718GIS |
CM3718
1.5A L
OW
-N
OISE
PWM S
TEP
-D
OWN
R
EGULATOR
GENERAL DESCRIPTION
The CM3718 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 CM3718 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 CM3718 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 CM3718 include high efficiency,
low dropout voltage. It is available in a space-saving 8-pin
SOP package.
APPLICATIONS
FEATURES
Patent Number #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 PSOP power packages
PIN CONFIGURATION
Cellular Phone
Cordless Phone
PDAs and Handy-Terminals
CPU I/O Supplies
Notebook Chipset Supplies
Battery Operated Devices
PSOP-8 (PT-08)
Top View
1
2
3
4
8
7
6
5
VIN
GND
SD
VREF
PVIN
LX
PGND
VFB
2005/02/02
Rev. 1.5
Champion Microelectronic Corporation
Page 1
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| CM3842 | CURRENT MODE PWM CONTROLLER |
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| CM3842CS | CURRENT MODE PWM CONTROLLER |
| CM3843 | CURRENT MODE PWM CONTROLLER |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| CM375 | 制造商:CML 制造商全稱:Chicago Miniature Lamp,inc 功能描述:T-1 3/4 Midget Flange Base |
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