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MAX1831EEE+T 开关稳压器
MAX1831EEE+T
MAXIM（美信）
: 1 MHz
: 1 Output
: 3.4 A
: 1.5 V to 3.3 V
相关产品
产品信息
MAX1831EEE+T
开关稳压器 3A, 1MHz, Low-Voltage,
Step-Down Regulators with Synchronous Rectification and Internal Switches
General Description MAX1831EEE+T
The MAX1830/MAX1831 constant-off-time, pulse-widthmodulated (PWM) step-down DC-DC converters are ideal for use in 5V and 3.3V to low-voltage conversion necessary in notebook and subnotebook computers. These devices feature internal synchronous rectification for high efficiency and reduced component count. They require no external Schottky diode.
Features MAX1831EEE+T
♦ ±1.5% Output Accuracy
♦ 94% Efficiency
♦ Internal PMOS/NMOS Switches
45mΩ/55mΩ On-Resistance at VIN = +4.5V
50mΩ/55mΩ On-Resistance at VIN = +3V
♦ Output Voltages
+3.3V, +2.5V, or +1.5V Pin Selectable (MAX1831)
+2.5V, +1.8V, or +1.5V Pin Selectable (MAX1830)
+1.1V to VIN Adjustable (Both Devices)
♦ +3V to +5.5V Input Voltage Range
♦ 750μA (max) Operating Supply Current
♦ <1μA Shutdown Supply Current
♦ Programmable Constant-Off-Time Operation
Applications MAX1831EEE+T
5V or 3.3V to Low-Voltage Conversion
CPU I/O Supplies
Chipset Supplies
Notebook and Subnotebook Computers
