MAX77596 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Minimizes Solution Size

MAX77596
EVALUATION KIT AVAILABLE
24V, 300mA, Buck Converter with 1.1µA I_Q
General Description
The MAX77596 is a small, synchronous buck converter
with integrated switches. The device is designed to
deliver up to 300mA with input voltages from 3.5V to
24V, while using only 1.1µA quiescent current at no load
(fixed-output version). Voltage quality can be monitored
by observing the RESET signal. The device can operate
near dropout by running at 98% duty cycle, making it ideal
for battery-powered applications.
The device offers fixed 3.3V and 5V output versions, 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
1.7MHz, which allows for small external components and
reduced output ripple. The device offers both forced-PWM
and skip modes of operation, with ultra-low quiescent cur-
rent of 1.1µA in skip mode.
The MAX77596 is available in a small (2mm x 2.5mm)
10-pin TDFN package and operates across the -40°C to
+85°C temperature range.
Applications
● Portable Devices Powered from 2s, 3s,
or 4s Li+ Batteries
● USB Type-C Devices
● Point-of-Load Applications
Benefits and Features
● Flexible Power for Systems That Require a Wide
Input Voltage Range
• V_IN Range: 3.5V to 24V
• Up to 300mA Output Current
• Fixed 3.3V, 5V, or Programmable 1V to 10V
Output Voltage
• 98% (Max) Duty Cycle Operation with Low
Dropout
• Operates from 5V, 12V, or 20V USB Type-C Input
Power
• Operates from 2S, 3S, or 4S Li-Ion Battery
● Minimizes Power Consumption and Extends Battery
Life
• 1.1µA Quiescent Current (3.3V Fixed Output
Voltage)
• 86% Peak Efficiency at 12V_IN, 3.3 V_OUT
● Minimizes Solution Size
• 1.7MHz Operating Frequency
• Small 2.0mm x 2.5mm x 0.75mm 10-Pin TDFN
Package
● Robust Solution
• Short-Circuit, Thermal Protections
• 6.67ms Internal Soft-Start Minimizes Inrush Current
• Current-Mode Control Architecture
• Up to 42V Input Voltage Tolerance
19-7733; Rev 1; 3/16