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参数资料
| 型号： | GM3326 |
| 厂商： | American Power Management Inc. |
| 英文描述： | PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| 中文描述： | 脉宽调制，脉宽调制/ PFM切换升压 |
| 文件页数： | 1/7页 |
| 文件大小： | 111K |
| 代理商： | GM3326 |
Description
GM3326 is step-up/down DC/DC converter controller ICs
with fast, and low ON resistance drivers built-in. A versatile
step-up/ down DC/DC converter can be realised by using
with large output current only 4 basic external components
- transistors, coils, diodes, and capacitors.
Output voltage is selectable in 0.1V steps within a 2.4V ~
6.0V ( ± 2.5% accuracy) range, and switching frequency is
set at or 300KHz.
GM3326 switches from PWM to PFM control during light
loads, and the series offers high efficiencies from light
loads through to large output currents.
Soft-start time is internally set to 10 msec, which offers
protection against rush currents when the power is
switched on and also against voltage overshoot.
During shutdown (CE pin = L), consumption current can be
reduced to as little as 0.5A or less.
Application
Mobile phones
PDAs
Palmtop computers
TYPICAL APPLICATION CIRCUITS
Features
Input Voltage Range : 2.0V ~ 10V
Output Voltage Range : 2.4V ~ 6.0V ( ± 2.5%
accuracy) (selectable in 0.1V steps)
Oscillation Frequency : 300KHz ( ± 15%
accuracy)
Output Current : more than 250mA (V =2.4V,
IN
V
=3.3V)
OUT
Efficiency : 81% (typ) at 5.0V, 78% (typ) at 3.3V
Stand-By : ISTB = 0.5A (max)
Output Voltage Internal Set-Up
SOT-25 Package
G
M
3
2
6
V
0
.1
1
www.gammamicro.com
Portable audio equipment
Various power supplies
CIN
+
CL
VOUT
VIN
3L colis SMTSPR5D5047C-220
Youth coils YCDH57-220
Nch
FDN339AN
MOSFET
CE
Pch MOSFET
FDN338P
GM3326
V
OUT
Schottky
MBRS140
Schottky
MBRS140
EXT
V
DD
GND
L
68F/ 10V
Chemi_con
PT- Series
100F/ 10V
Chemi_con
PT- Series
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相关代理商/技术参数 |
参数描述 |
|---|---|
| GM3326-2.5ST25R | 制造商:GAMMA 制造商全称:GAMMA 功能描述:PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| GM3326-2.8ST25R | 制造商:GAMMA 制造商全称:GAMMA 功能描述:PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| GM3326-3.0ST25R | 制造商:GAMMA 制造商全称:GAMMA 功能描述:PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| GM3326-3.3ST25R | 制造商:GAMMA 制造商全称:GAMMA 功能描述:PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
| GM3326-3.5ST25R | 制造商:GAMMA 制造商全称:GAMMA 功能描述:PWM,PWM/PFM SWITCHING STEP-UP & DOWN DC/DC CONVERTER CONTROLLER ICS |
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