LTM8008 Datasheet, PDF (1/16 Pages) Linear Technology – 72VIN, 6 Output DC/DC SEPIC μModule Regulator

LTM8008
72V_IN, 6 Output DC/DC
SEPIC µModule Regulator
Features
n _{One SEPIC Converter with Six Linear Regulators}
n _{Wide Input Voltage Range: 3V to 72V, 6V Start}
n _{Wide Operating Temperature: –40°C to 150°C}
(H-Grade)
n _{Current Mode Control Provides Excellent Transient}
Response
n _{Programmable Operating Frequency}
(100kHz to 1MHz) with One External Resistor
n _{Synchronizeable to an External Clock}
n _{Programmable Input Undervoltage Lockout with}
Hysteresis
n _{Programmable Soft-Start}
n _{Small 15mm × 15mm × 2.82mm LGA Package}
Applications
n _{Automotive Converters}
n _{Industrial Converters}
n _{Telecom Power Supplies}
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.
Description
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.
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.
Typical Application
Six Output DC/DC µModule Regulator
L1A
4.7µH
10µF
SBR3U100LP-7
V_IN
3V TO 72V
4.7µF
42.2k
4.99k
22nF
V_IN
SS
RT
V_C
SYNC
RUN
SW
SPV
V_OUT1
LTM8008
V_OUT2
V_OUT3
V_OUT4
V_OUT5
V_OUT6
INTV_CC GND
4.7µF
L1: COUPLED INDUCTOR, COILCRAFT MSD1278T-472ML
L1B
4.7µH
5V AT 500mA
5V AT 150mA
5V AT 150mA
5V AT 150mA
5V AT 150mA
3.3V AT 300mA
22µF
10µF
10µF
10µF
10µF
10µF
8008 TA01
8008fa
1