MAXM17543 Datasheet, PDF (1/18 Pages) Maxim Integrated Products – Saves Board Space in Space-Constrained Applications

MAXM17543
4.5V to 42V, 2.5A High-Efficiency, DC-DC Step-
Down Power Module with Integrated Inductor
General Description
The Himalaya series of voltage regulator ICs and power
modules enable cooler, smaller, and simpler power supply
solutions. The MAXM17543 is an easy-to-use, step-down
power module that combines a switching power supply
controller, dual n-channel MOSFET power switches, fully
shielded inductor, and the compensation components in
a low-profile, thermally-efficient, system-in-package (SiP).
The device operates over a wide input voltage range of
4.5V to 42V and delivers up to 2.5A continuous output
current with excellent line and load regulation over an output
voltage range of 0.9V to 12V. The device only requires
five external components to complete the total power
solution. The high level of integration significantly reduces
design complexity, manufacturing risks, and offers a true
plug-and-play power supply solution, reducing time-to-
market.
The device can be operated in the pulse-width modulation
(PWM), pulse-frequency modulation (PFM), or discontinu-
ous conduction mode (DCM) control schemes.
The MAXM17543 is available in a low-profile, highly
thermal-emissive, compact, 29-pin 9mm x 15mm x
2.8mm SiP package that reduces power dissipation in
the package and enhances efficiency. The package is
easily soldered onto a printed circuit board and suitable
for automated circuit board assembly. The device can
operate over the industrial temperature range from -40°C
to +125°C.
Applications
●● Industrial Power Supplies
●● Distributed Supply Regulation
●● FPGA and DSP Point-of-Load Regulator
●● Base Station Point-of-Load Regulator
●● HVAC and Building Control
Ordering Information appears at end of data sheet.
Features and Benefits
●● Reduces Design Complexity, Manufacturing Risks,
and Time-to-Market
• Integrated Switching Power Supply Controller and
Dual-MOSFET Power Switches
• Integrated Inductor
• Integrated Compensation Components
• Integrated Thermal-Fault Protection
• Integrated Peak Current Limit
●● Saves Board Space in Space-Constrained Applications
• Complete Integrated Step-Down Power Supply in a
Single Package
• Small Profile 9mm x 15mm x 2.8mm SiP Package
• Simplified PCB Design with Minimal External BOM
Components
●● Offers Flexibility for Power-Design Optimization
• Wide Input Voltage Range from 4.5V to 42V
• Output-Voltage Adjustable Range from 0.9V to 12V
• Adjustable Frequency with External Frequency
Synchronization (100kHz to 1.8MHz)
• Soft-Start Programmable
• Autoswitch PWM, PFM, or DCM Current-Mode Control
• Optional Programmable EN/UVLO
Typical Application Circuit
4.5V TO 42V
VIN
CIN
VCC
OPTIONAL
CSS
EN
IN
VCC
RESET
SS
SYNC
MODE
MAXM17543
RT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
EP3
CF
EP1
FB
SGND
PGND
PGND
RT
COUT
VOUT
RU
RB
19-7450; Rev 0; 11/14