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PDF AMS4155 Data sheet ( Hoja de datos )
| Número de pieza | AMS4155 | |
| Descripción | 2A OUTPUT PWM BUCK CONVERTER | |
| Fabricantes | Advanced Monolithic Systems | |
| Logotipo |  |
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Advanced
Monolithic
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
AMS4155
2A OUTPUT PWM BUCK CONVERTER
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
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
OUTPUT PACKAGE TYPE TEMP. RANGE
VOLTAGE 8 Lead SOIC
Adjustable AMS4155S
-25°C to 125°C
TYPICAL APPLICATION
PIN CONNECTIONS
INPUT
470µF/
10µF CER
ON EN
OFF
VIN BST
32
8
AMS4155
1µF
LX
4
SYNC 1
5
GND
7
COMP
6 F/B
10nF
10 µH
B230A
5kΩ
OUTPUT
5V/3A
30kΩ
10kΩ
40µF
ceramic
8L SOIC
SO Package (S)
SYNC 1
BST 2
VIN 3
LX 4
8 EN
7 COMP
6 FB
5 GND
Top View
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
1 page  
www.DataSheet4U.com
AMS4155
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
0.5-3A transient on 5V output
Full load Sat (reference = supply at IC)
Typical waveform set at 3.3V output, 2A load and 12V input.
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet AMS4155.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AMS4154 | 2A OUTPUT PWM BUCK CONVERTER | Advanced Monolithic Systems |
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