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LTM8008
72V IN , 6 Output DC/DC
SEPIC μModule Regulator
FEATURES
DESCRIPTION
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One SEPIC Converter with Six Linear Regulators
Wide Input Voltage Range: 3V to 72V, 6V Start
Wide Operating Temperature: –40°C to 150°C
(H-Grade)
Current Mode Control Provides Excellent Transient
Response
Programmable Operating Frequency
(100kHz to 1MHz) with One External Resistor
Synchronizeable to an External Clock
Programmable Input Undervoltage Lockout with
Hysteresis
Programmable Soft-Start
Small 15mm × 15mm × 2.82mm LGA Package
The LTM ? 8008 is a 72V IN , μModule ? SEPIC converter with
six post regulators. The SEPIC controller’s fixed frequency,
current-mode architecture results in stable operation over
a wide range of supply and output voltages and features
soft-start and frequency foldback functions to limit inductor
current during start-up and output short-circuit.
The LTM8008 also includes six high performance, fixed
output LDOs for post-regulation: one 5V at 500mA, one
3.3V at 300mA, and four 5V at 150mA. The output of the
SEPIC controller is internally set to 5.6V for optimal ef-
ficiency. In addition to providing these outputs, the SEPIC
converter can supply up to an additional 500mA to the
system load.
Automotive Converters
Industrial Converters
Telecom Power Supplies
APPLICATIONS
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The LTM8008 is packaged in a thermally enhanced, compact
(15mm × 15mm) and low profile (2.82mm) over-molded
land grid array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM8008 is Pb-free and RoHS compliant.
L , LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Six Output DC/DC μModule Regulator
L1A
4.7μH
10μF
SBR3U100LP-7
V IN
3V TO 72V
V IN
SW
SPV
L1B
4.7μH
V OUT1
V OUT2
5V AT 500mA
5V AT 150mA
SS
RT
LTM8008
V OUT3
V OUT4
5V AT 150mA
5V AT 150mA
4.7μF
V C
SYNC
RUN
INTV CC
V OUT5
V OUT6
GND
5V AT 150mA
3.3V AT 300mA
42.2k
4.99k
22μF
10μF
10μF
22nF
4.7μF
10μF
10μF
10μF
L1: COUPLED INDUCTOR, COILCRAFT MSD1278T-472ML
8008 TA01
8008fa
1
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