DC1307A Datasheet, PDF (1/22 Pages) Linear Technology – Complete Switch Mode Power Supply

Features
n _{Complete Switch Mode Power Supply}
n _{Wide Input Voltage Range: 4.5V to 60V}
(7.5V Minimum Voltage to Start)
n _{Wide Output Voltage Range: 2.5V to 24V}
(See Table 2)
n _{4A Output Current}
n _{Programmable Soft-Start}
n _{9µA Shutdown Supply Current}
n _{Selectable Switching Frequency Current Mode}
Control
n _{Up to 95% Efficiency}
n _{Pb-Free (e4) RoHS Compliant Package with}
Gold Pad Finish
n _{Tiny, Low Profile (15mm × 15mm × 4.32mm)}
Surface Mount LGA Package
Applications
n _{12V and 42V Automotive and Heavy Equipment}
n _{48V Telecom Power Supplies}
n _{Avionics and Industrial Control Systems}
n _{Distributed Power Converters}
LTM8027
60V, 4A DC/DC
µModule Regulator
Description
The LTM^®8027 is a complete 4A, 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 4.5V to 60V (7.5V
minimum voltage to start), the LTM8027 supports output
voltages up to 24V, and a switching frequency range of
100kHz to 500kHz, 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 den-
sity point of load regulation. A built-in soft-start timer is
adjustable with a small capacitor.
The LTM8027 is packaged in a thermally enhanced, compact
(15mm × 15mm) and low profile (4.32mm) over-molded
land grid array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM8027 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
48W, 16V_IN to 60V_IN DC/DC µModule^® Regulator
V_IN
16V TO 60V
4.7µF
×2
V_IN
V_OUT
1M
LTM8027
RUN
BIAS1
SS
BIAS2
SYNC
AUX
RT
48.7k
ADJ
GND
V_OUT
12V
4A
22µF
×4
56.2k
3845 TA01a
Efficiency vs Load
100 _24VIN
90
80
70
60
50
40
30
20
10
0
0
1
2
LOAD (A)
3
4
8027 TA01b
8027fb
1