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PDF AMC7140 Data sheet ( Hoja de datos )
| Número de pieza | AMC7140 | |
| Descripción | 700mA HIGH VOLTAGE ADJUSTABLE CURRENT REGULATOR | |
| Fabricantes | ADD Microtech | |
| Logotipo |  |
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www.addmtek.com
DESCRIPTION
The AMC7140 is a high voltage, low drop-out
current regulator for maximum output current up to
700mA. The output current was decided by external
resistor. The output sink current could be disabled via OE
pin
Build-in thermal protection to prevent the chip over
heat damage.
TYPICAL APPLICATION CIRCUIT
AMC7140
700mA HIGH VOLTAGE
ADJUSTABLE CURRENT REGULATOR
WITH ENABLE CONTROL
FEATURES
0.5V Output Drop-out Voltage at 700mA.
700mA Maximum Output Current.
Output Current Controlled by External
Resistor.
3us Fast Response Output Stage Enable
Control.
Output Driving Voltage Up To 75V.
Supply Voltage Range 5V~50V
TO-252-5L package
APPLICATIONS
5V~50V
CBP
Enable
RSET
VDD
OE
AMC7140
ISET
GND
OUT
High Power LED Driver
RGB Full Color Power LED driver
LCD Monitor/TV LED backlight Driver
LED Table Lamp
PACKAGE PIN OUT
5 OUT
4 OE
3 GND
2 ISET
1 VDD
TO-252-5L
(Top View)
ORDER INFORMATION
DL
TO-252
5 pin
AMC7140DLFT (Lead Free)
Note: All surface-mount packages are available in Tape & Reel. Append the letter “T” to part number (i.e. AMC7140DLFT). The letter ”F” is
marked for Lead Free process.
Copyright © 2007 ADDtek Corp.
1
DD032_B -- APRIL 2007
1 page  
APPLICATION INFORMATION
AMC7140
AMC7140 is a high voltage, low dropout current regulator for maximum output current up to 700mA with OE pin.
The current could be linearly adjusted through variable resister connected to ISET pin, or by PWM control via OE pin.
Although the absolute maximum rating of OUT pin 60V, the dropout voltage between OUT pin and GND pin should
not be too large when current is sinking because of the heat dissipation capability of the package.
Here are some of the typical application examples:
DC Voltage Input:
Any DC voltage level between 5V to 50V could be adopted as power source VDD for typical application of
AMC7140 as long as VDD is larger than the total forward voltage drop of the LED string (at expecting current) by 0.35V.
If 50V ~ 60V voltage level is adopted as power source to positive end of the LED string, one Zener shunt regulator
could be used to provide appropriate voltage to VDD pin.
＜50VDC
Enable
CIN RSET1
VDD
OUT
OE AMC7140
ISET
GND
RSET2 880Ω
＞50VDC
RZ
CIN
Enable
DZ
RSET1
VDD
OUT
OE AMC7140
ISET
GND
RSET2 880Ω
Copyright © 2007 ADDtek Corp.
5 DD032_B -- APRIL 2007
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AMC7140.PDF ] | |
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