Triple Output Power Management IC for
The MAX1702B power-management IC supports ARM
Powered® devices such as the Intel® PXA210 and
PXA250 microprocessors based on the Intel XScale™
micro-architecture. These devices include PDAs, third-
generation smart cellular phones, internet appliances,
automotive in-dash Telematics systems, and other appli-
cations requiring substantial computing and multimedia
capability at low power.
The MAX1702B integrates three ultra-high-performance
power supplies with associated supervisory and manage-
ment functions. Included is a step-down DC-DC converter
to supply 3.3V I/O and peripherals, a step-down DC-DC
converter to supply 0.7V to VIN for the microprocessor
core, and a step-down DC-DC converter to supply either
1.8V, 2.5V, or 3.3V to power the memory.
Management functions include automatic power-up
sequencing, power-on-reset and manual reset with timer,
and two levels of low-battery detection.
The DC-DC converters use fast 1MHz PWM switching,
allowing the use of small external components. They
automatically switch from PWM mode under heavy loads
to skip mode under light loads to reduce quiescent cur-
rent and maximize battery life. The input voltage range is
from 2.6V to 5.5V, allowing the use of three NiMH cells,
a single Li+ cell, or a regulated 5V input. The MAX1702B
is available in a tiny 6mm x 6mm, 36-pin QFN package
and operates over the -40°C to +85°C temperature range.
●● PDA, Palmtop, and Wireless Handhelds
●● Third Generation Smart Cell Phones
●● Internet Appliances and Web Books
Typical Operating Circuit appears at end of data sheet.
Intel is a registered trademark of Intel Corporation.
XScale is a trademark of Intel Corporation.
ARM and ARM Powered are registered trademarks of ARM
●● Three Regulators in One Package
• Peripherals and I/O Supply: 3.3V at 900mA
• μP Core Supply: 0.7V to VIN at 400 mA
• Memory Supply: 1.8/2.5/3.3V at 800 mA
●● Supports Intel® PXA210 and PXA250
●● Power-On Reset with Manual Reset Input
●● Auto Power-Up Sequencing
●● 1MHz PWM Switching Allows Small External
●● Low 5μA Shutdown Current
●● Tiny 6mm x 6mm, 36-pin QFN Package
MAX1702BEGX -40°C to +85°C
(6mm x 6mm)
36 35 34 33 32 31 30 29 28
10 11 12 13 14 15 16 17 18
6mm x 6mm QFN
19-2448; Rev 1; 4/15