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LM25037 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce LM25037
Description  Dual-Mode PWM Controller With Alternating Outputs
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM25037 Fiches technique(HTML) 1 Page - Texas Instruments

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LM25037
UVLO
PGND
AGND
COMP
OUTB
OUTA
VCC
SS
RT1
REF
RES
CS
VIN
VIN
VOUT
RT2
FB
RAMP
Isolated
Feedback
LM25037, LM25037-Q1
www.ti.com
SNVS572C – JULY 2008 – REVISED JANUARY 2010
LM25037/LM25037-Q1 Dual-Mode PWM Controller With Alternating Outputs
Check for Samples: LM25037, LM25037-Q1
1
FEATURES
Oscillator Synchronization Capability with Low
Frequency Lockout Protection
2
LM25037-Q1 is an Automotive Grade Product
DESCRIPTION
that is AEC-Q100 Grade 1 Qualified (-40°C to
The LM25037 PWM controller contains all the
125°C Operating Junction Temperature)
features necessary to implement balanced double-
Ultra Wide Input Operating Range from 5.5V to
ended power converter topologies, such as push-pull,
75V
half-bridge
and
full-bridge.
These
double-ended
Alternating Outputs for Double-ended
topologies allow for higher efficiencies and greater
power densities compared to common single-ended
Topologies
topologies such as the flyback and forward. The
Current-mode or Feed-forward Voltage-mode
LM25037 can be configured for either voltage mode
Control
or current mode control with minimum external
Programmable Maximum Duty Cycle Limit
components. Two alternating gate drive outputs are
provided, each capable of 1.2A peak output current.
2.0% Feedback Reference Accuracy
The LM25037 can be configured to operate directly
High Gain-bandwidth Error Amplifier
from the input voltage rail over an ultra-wide range of
Programmable Line Under-voltage Lockout
5.5V
to
75V.
Additional
features
include
(UVLO) with Adjustable Hysteresis
programmable maximum duty cycle limit, line under-
voltage lockout, cycle-by-cycle current limit and a
Versatile Dual Mode Over-current Protection
hiccup mode fault protection with adjustable timeout
with Hiccup Delay Timer
delay, soft-start and a 2 MHz capable oscillator with
Programmable Soft-start
synchronization capability, precision reference and
Precision 5V Reference Output
thermal shutdown.
Current Sense Leading Edge Blanking
PACKAGE
Resistor Programmed 2 MHz Capable
Oscillator
16-Lead TSSOP
Simplified Push-Pull Power Converter
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008–2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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