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參數(shù)資料
| 型號： | AMS4155S |
| 廠商： | Advanced Monolithic Systems, Inc. |
| 英文描述： | 2A OUTPUT PWM BUCK CONVERTER |
| 中文描述： | 甲變換器輸出 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 398K |
| 代理商： | AMS4155S |
Advanced
AMS4155
Monolithic
2A OUTPUT PWM BUCK CONVERTER
Systems
FEATURES
Stable with low ESR Output Ceramic Capacitors
Up to 95% Efficiency
2A Continuous Output Current
Wide 4.75V to 20V Operating Input Range
Fixed 480kHz Frequency
Thermal Shutdown
Cycle-by-cycle + hiccup Over Current Protection
Under Voltage Lockout
Frequency Synchronization Input
Operating Temperature: -40°C to 125°C
Available in an 8-Pin SO Package
GENERAL DESCRIPTION
The AMS4155 is a monolithic step down switch mode converter with a built in internal power Switch Transistor. It achieves 2A
continuous output current over a wide input supply range with excellent load and line regulation.
Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-
by-cycle current limiting and thermal shutdown. In shutdown mode the regulator draws 17μA of supply current.
ORDERING INFORMATION
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
RoHS compliant
APPLICATIONS
Battery Chargers
Portable (Notebook) Computers
Industrial power supply
Point of regulation for high performance electronics
Consumer Electronics
Audio Power Amplifiers
Distributed Power Systems
Pre-Regulator for Linear Regulators
LCD TVs and LCD monitors
TYPICAL APPLICATION
PIN CONNECTIONS
INPUT
1
μF
10 μH
OUTPUT
5V/3A
B230A
30k
10k
40μF
ceramic
470
μF/
10μF CER
5k
10nF
1
2
3
4
5
6
7
8
GND
VIN
BST
EN
COMP
F/B
SYNC
LX
AMS4155
OFF
ON
OUTPUT
PACKAGE TYPE
TEMP. RANGE
VOLTAGE
8 Lead SOIC
Adjustable
AMS4155S
-25°C to 125°C
8L SOIC
SO Package (S)
2
8
3
4
7
6
5
FB
GND
LX
COMP
BST
VIN
1
EN
SYNC
Top View
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