MAX16956 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Mini Buck Converter

MAX16956
EVALUATION KIT AVAILABLE
36V, 300mA, Mini Buck Converter with
1.1µA I_Q
General Description
The MAX16956 is a small, synchronous buck converter
with integrated high-side and low-side switches. The
device is designed to deliver up to 300mA with input
voltages from 3.5V to 36V, while using only 1.1µA
quiescent current at no load (fixed-output versions).
Voltage quality can be monitored by observing the
RESET signal. The device can operate near dropout by
running at 97% duty cycle, making it ideal for automotive
applications under cold-crank.
The device offers fixed-output voltages of 5V and 3.3V,
as well as an adjustable version. The adjustable version
allows the user to program the output voltage between
1V and 10V by using a resistor-divider. Frequency is fixed
at 2.1MHz, which allows for small external components,
reduced output ripple, and minimized AM radio interfer-
ence. The device offers both forced-PWM and skip modes
of operation, with ultra-low quiescent current of 1.1µA
in skip mode. The device can be ordered with spread-
spectrum frequency modulation designed to minimize
EMI-radiated emissions due to the switching frequency.
The MAX16956 is available in a small (3mm x 3mm)
10-pin µMAX^® package and operates across the full auto-
motive temperature range of -40°C to +125°C. The device
is AEC-Q100 qualified.
Applications
● Automotive Body ECUs
● Point-of-Load Applications
● Distributed DC Power Systems
Features
● Operating V_IN Range: 3.5V to 36V (42V Tolerant)
● DC-DC Converter Up to 300mA Capability
● 1.1µA Quiescent Current in Standby Mode
(Fixed-Output-Voltage Versions Only)
● 2.1MHz Operating Frequency
● Spread-Spectrum Options Available
● Short-Circuit, Thermal Protections
● Fixed 5.4ms Internal Soft-Start
● Fixed 5V/3.3V or Programmable Output-Voltage
Options (1V to 10V)
● 97% (Max) Duty-Cycle Operation with Low Dropout
● Current-Mode Control Architecture
µMAX is a registered trademark of Maxim Integrated Products,
Inc.
19-6737; Rev 2; 3/14