LTM8025 Datasheet, PDF (1/20 Pages) Linear Technology – 36V, 3A Step-Down μModule Converter

LTM8025
36V, 3A Step-Down
µModule Converter
FEATURES
n _{Complete Step-Down Switch Mode Power Supply}
n _{Wide Input Voltage Range: 3.6V to 36V}
n _{Up to 3A Output Current}
n _{Parallelable for Increased Output Current}
n _{0.8V to 24V Output Voltage}
n _{Selectable 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 (15mm × 9mm × 4.32mm) 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^®8025 is a 36V_IN, 3A step down μModule^® con-
verter. Included in the package are the switching controller,
power switches, inductor and all support components.
Operating over an input voltage range of 3.6V to 36V, the
LTM8025 supports an output voltage range of 0.8V to 24V
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 (4.32mm) enables utilization of
unused space on the bottom of PC boards for high density
point of load regulation.
The LTM8025 is packaged in a thermally enhanced, compact
(15mm × 9mm) and low profile (4.32mm) over-molded
land grid array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM8025 is RoHS compliant.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
V_IN*
22V TO 36V
4.7μF
47.5k
V_IN
RUN/SS
V_OUT
AUX
LTM8025 BIAS
SHARE
PGOOD
RT
ADJ
SYNC GND
V_OUT
12V AT 3A
22μF
34.8k
*RUNNING VOLTAGE RANGE. PLEASE REFER TO
APPLICATIONS INFORMATION SECTION FOR START-UP DETAILS 8025 TA01a
100
V_IN = 24V
90
Efficiency
80
70
60
50
40
0 500 1000 1500 2000 2500 3000
OUTPUT CURRENT (mA)
8025 TA01b
8025f
1