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L6712AQ 데이터시트(PDF) 1 Page - STMicroelectronics

부품명 L6712AQ
상세설명  TWO-PHASE INTERLEAVED DC/DC CONTROLLER
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6712AQ 데이터시트(HTML) 1 Page - STMicroelectronics

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L6712
L6712A
June 2005
1
Features
2 PHASE OPERATION WITH
SYNCHRONOUS RECTIFIER CONTROL
ULTRA FAST LOAD TRANSIENT RESPONSE
INTEGRATED HIGH CURRENT GATE
DRIVERS: UP TO 2A GATE CURRENT
3 BIT PROGRAMMABLE OUTPUT FROM
0.900V TO 3.300V OR WITH EXTERNAL REF.
±0.9% OUTPUT VOLTAGE ACCURACY
3mA CAPABLE AVAILABLE REFERENCE
INTEGRATED PROGRAMMABLE REMOTE
SENSE AMPLIFIER
PROGRAMMABLE DROOP EFFECT
10% ACTIVE CURRENT SHARING
ACCURACY
DIGITAL 2048 STEP SOFT-START
CROWBAR LATCHED OVERVOLTAGE PROT.
NON-LATCHED UNDERVOLTAGE PROT.
OVERCURRENT PROTECTION REALIZED
USING THE LOWER MOSFET'S RdsON OR A
SENSE RESISTOR
OSCILLATOR EXTERNALLY ADJUSTABLE
AND INTERNALLY FIXED AT 150kHZ
POWER GOOD OUTPUT AND INHIBIT
FUNCTION
PACKAGES: SO-28 & VFQFPN-36
1.1 Applications
HIGH CURRENT DC/DC CONVERTERS
DISTRIBUTED POWER SUPPLY
2
Description
The device implements a dual-phase step-down con-
troller with a 180 phase-shift between each phase
optimized for high current DC/DC applications.
Output voltage can be programmed through the in-
tegrated DAC from 0.900V to 3.300V; program-
ming the "111" code, an external reference from
0.800V to 3.300V is used for the regulation.
Programmable Remote Sense Amplifier avoids
use of external resistor divider and recovers loss-
es along distribution line.
The device assures a fast protection against load
over current and Over / Under voltage.An internal
crowbar is provided turning on the low side mosfet
if Over-voltage is detected.
Output current is limited working in Constant Cur-
rent mode: when Under Voltage is detected, the
device resets, restarting operation.
TWO-PHASE INTERLEAVED DC/DC CONTROLLER
Figure 1. Packages
Table 1. Order Codes
Package
Tube
Tape & Reel
SO
L6712D,
L6712AD
L6712DTR,
L6712ADTR
VFQFPN
L6712Q,
L6712AQ
L6712QTR,
L6712AQTR
SO28
VFQFPN-36 (6x6x1.0mm)
Rev. 3


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