LTM8001_15 Datasheet, PDF (1/28 Pages) Linear Technology – 36VIN, 5A Module Regulator with 5-Output Configurable LDO Array

Features
n _{Complete Step-Down Switch Mode Power Supply}
with Configurable Array of Five LDOs
n _{Step-Down Switching Power Supply}
– Adjustable 10% Accurate Output Current Limit
–Constant-Current, Constant-Voltage Operation
– Wide Input Voltage Range: 6V to 36V
– 1.2V to 24V Output Voltage
n _{Configurable Output LDO Array}
– Five 1.1A Parallelable Outputs
– Outputs Adjustable from 0V to 24V
– Low Output Noise: 90μV_RMS (100Hz to 1MHz)
n _{15mm × 15mm × 3.42mm Surface Mount}
BGA Package
Applications
n _{FPGA, DSP, ASIC and Microprocessor Supplies}
n _{Servers and Storage Devices}
n _{RF Transceivers}
LTM8001
36V_IN, 5A µModule
Regulator with 5-Output
Configurable LDO Array
Description
The LTM^®8001 is a 36V_IN, 5A step-down μModule^® regu-
lator with a 5-output configurable LDO array. Operating
over an input voltage range of 6V to 36V, the LTM8001
buck regulator supports an output voltage range of 1.2V
to 24V. Following the buck regulator is an array of five
1.1A linear regulators whose outputs may be connected
in parallel to accommodate a wide variety of load combi-
nations. Three of these LDOs are tied to the output of the
buck regulator, while the other two are tied together to an
undedicated input.
The low profile package (3.42mm) enables utilization of
unused space on the bottom of PC boards for high density
point of load regulation. The LTM8001 is packaged in a
thermally enhanced, compact (15mm × 15mm) and low
profile (3.42mm) overmolded ball grid array (BGA) pack-
age suitable for automated assembly by standard surface
mount equipment. The LTM8001 is available with SnPb
(BGA) or RoHS compliant terminal finish.
L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 7199560, 7321203.
Typical Application
5A Output DC/DC µModule Converter
V_IN
6V TO 36V
V_IN45
10µF
3.3V
510k
V_IN0
RUN
BIAS123
BIAS45 LTM8001
COMP
SS
V_REF
ILIM
SYNC
GND
V_OUT0
LDO 1
V_OUT1
SET1
STEP-DOWN
LDO 2
V_OUT2
SET2
SWITCHING
REGULATOR
LDO 3
V_OUT3
SET3
LDO 4
V_OUT4
SET4
RT
FBO
LDO 5
V_OUT5
SET5
118k 19.6k
350kHz
4.7µF
45.3k
4.7µF
54.9k
2.2µF
121k
For more information www.linear.com/LTM8001
1.8V
1A
1.2V
1A
1.1V
1.5A
0.9V
1.5A
+
470µF
100µF
8001 TA01
8001fc
1