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ADD Microtech

AMC7140 Datasheet Preview

AMC7140 Datasheet

700mA HIGH VOLTAGE ADJUSTABLE CURRENT REGULATOR

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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




ADD Microtech

AMC7140 Datasheet Preview

AMC7140 Datasheet

700mA HIGH VOLTAGE ADJUSTABLE CURRENT REGULATOR

No Preview Available !

AMC7140
ABSOLUTE MAXIMUM RATINGS (Note)
Input Voltage, VDD
Output Voltage, VOUT
Maximum Operating Junction Temperature, TJ
Storage Temperature Range
Lead Temperature (soldering, 10 seconds)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground.
Currents are positive into, negative out of the specified terminal.
50V
75V
150°C
-65°C to 150°C
260°C
Pin Name
OUT
OE
ISET
VDD
GND
PIN DESCRIPTION
Pin Function
Output pin. Sink current is decided by the current on RSET connected to ISET.
IOUT = 500 × ISET.
Output stage enable control pin. High enable the OUT pin.
Output current set input. Connect a resistor from ISET to GND to set the LED bias current.
ISET = 1.2V/RSET.
Power supply.
Ground
THERMAL DATA
Thermal Resistance from Junction to Ambient, θ JA
Junction Temperature Calculation: TJ = TA+ (PD × θ JA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board system.
Connect the ground pin to ground using a large pad or ground plane for better heat dissipation.
All of the above assume no ambient airflow.
80 OC /W
Maximum Power Calculation:
PD(MAX)=
TJ(MAX) – TA(MAX)
θJA
TJ(OC):
Maximum recommended junction temperature
TA(OC):
Ambient temperature of the application
θJA(OC /W): Junction-to-Ambient temperature thermal resistance of the package, and other heat dissipating materials.
The maximum power dissipation for a single-output regulator is:
PD(MAX) = [(VIN(MAX) - VOUT(NOM))] × IOUT(NOM) + VIN(MAX) × IQ
Where:
Then
VOUT(NOM) = the nominal output voltage
IOUT(NOM) = the nominal output current, and
IQ = the quiescent current the regulator consumes at IOUT(MAX)
VIN(MAX) = the maximum input voltage
θJA = (+150 OC – TA)/PD
Copyright © 2007 ADDtek Corp.
2 DD032_B -- APRIL 2007



Part Number AMC7140
Description 700mA HIGH VOLTAGE ADJUSTABLE CURRENT REGULATOR
Maker ADD Microtech
Total Page 9 Pages
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AMC7140 Datasheet PDF





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