LTM8022 Datasheet, PDF (1/20 Pages) Linear Technology – 1A, 36V DC/DC μModule

LTM8022
1A, 36V DC/DC µModule
FEATURES
n _{Complete Step-Down Switch Mode Power Supply}
n _{Wide Input Voltage Range: 3.6V to 36V}
n _{0.8V to 10V Output Voltage}
n _{1A Output Current}
n _{Adjustable Switching Frequency: 200kHz to 2.4MHz}
n _{Current Mode Control}
n _{(e4) RoHS Compliant Package with Gold Pad Finish}
n _{Programmable Soft-Start}
n _{Tiny, Low Profile (11.25mm × 9mm × 2.82mm)}
Surface Mount LGA Package
APPLICATIONS
n _{Automotive Battery Regulation}
n _{Power for Portable Products}
n _{Distributed Supply Regulation}
n _{Industrial Supplies}
n _{Wall Transformer Regulation}
DESCRIPTION
The LTM^®8022 is a complete 1A, DC/DC step-down power
supply. Included in the package are the switching control-
ler, power switches, inductor, and all support components.
Operating over an input voltage range of 3.6V to 36V, the
LTM8022 supports an output voltage range of 0.8V to 10V,
and a switching frequency range of 200kHz to 2.4MHz,
each set by a single resistor. Only the bulk input and output
filter capacitors are needed to finish the design.
The low profile package (2.82mm) enables utilization of
unused space on the bottom of PC boards for high density
point of load regulation.
The LTM8022 is packaged in a thermally enhanced, compact
(11.25mm × 9mm) and low profile (2.82mm) overmolded
Land Grid Array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM8022 is RoHS compliant.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
μModule is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
TYPICAL APPLICATION
V_IN*
7V TO
36V
7V_IN to 36V_IN, 5V/1A μModule^TM Regulator
2.2μF
V_IN
V_OUT
LTM8022
RUN/SS
AUX
SHARE
BIAS
PG
RT GND SYNC ADJ
29.4k
93.1k
V_OUT
5V
1A
4.7μF
8022 TA01a
*RUNNING VOLTAGE RANGE. PLEASE REFER TO
APPLICATIONS INFORMATION FOR START-UP DETAILS
Efficiency and Power Loss
100
V_IN = 12V
90
80
EFFICIENCY
70
60
50
40
0.8
0.7
0.6
0.5
POWER
0.4
LOSS
0.3
0.2
0.1
30
0.001
0.01
0.1
LOAD CURRENT (A)
0
1
8022 TA01b
8022fb
1