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參數(shù)資料
| 型號(hào)： | 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(yè)數(shù)： | 2/6頁(yè) |
| 文件大?。?/td> | 398K |
| 代理商： | AMS4155S |
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS4155
PIN DESCRIPTION
Pin Number
NAME
DESCRIPTION
1
SYNC
Synchronization Input. This pin is used to synchronize the internal oscillator frequency to
an external source. Leave SYNC unconnected or connect to GND if unused.
2
BST
Bootstrap. This capacitor is needed to drive the power switch above the supply voltage. It
is connected between LX and BST pins to form a floating supply across the power switch
driver. The voltage across Cbst is about 5V and is supplied by the internal Vcc supply
when LX pin voltage is low.
3
VIN
Supply Voltage. The AMS4155 operates from a+4.75V to +23V unregulated input. Cin is
needed to prevent large voltage spikes from appearing at the input power supply.
4
LX
This connects the inductor to the internal Switch
5
GND
Ground Pin connected to PCB ground plane. This pin is also the ground for internal voltage
reference.
6
FB
Feedback. A resistor network of two resistors is used to set-up the output voltage connected
between Output to GND. The node between the two resistors is connected to Feedback pin.
7
COMP
Compensation. This node is the output of the transconductance error amplifier and the
input to the current comparator. Frequency compensation is done at this node by
connecting a series R-C to ground.
8
ENABLE
Enable. A voltage greater than 2.495V at this pin enables device operation.
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| AMS421BM1 | 制造商:ADMOS 制造商全稱:ADMOS 功能描述:0.5V SHUNT REGULATOR |
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