
Maxim Integrated
General Description
The MAX8732/MAX8733/MAX8734 dual step-down, switch-mode power-supply (SMPS) controllers generate
logic-supply voltages in battery-powered systems. The MAX8732/MAX8733/MAX8734 include two pulse-width
modulation (PWM) controllers, adjustable from 2V to 5.5V or fixed at 5V and 3.3V. These devices feature two linear regulators providing 5V and 3.3V always-on outputs.
FEATUREs
♦No Current-Sense Resistor Needed (MAX8734)
♦Accurate Current Sense with Current-Sense Resistor (MAX8732/MAX8733)
♦1.5% Output Voltage Accuracy
♦3.3V and 5V 100mA Bootstrapped Linear Regulators
♦Internal Soft-Start and Soft-Stop Output Discharge
♦Quick-PWM with 100ns Load Step Response
♦3.3V and 5V Fixed or Adjustable Outputs(Dual Mode™)
♦4.5V to 24V Input Voltage Range
♦Enhanced Ultrasonic Pulse-Skipping Mode(25kHz min)
♦Power-Good (PGOOD) Signal
♦Overvoltage Protection Enable/Disable
APPLICATIONs
Notebook and Subnotebook Computers
PDAs and Mobile Communication Devices
3- and 4-Cell Li+ Battery-Powered Devices