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MAX1644 Datasheet PDF

Part Series:
MAX1644 Series
Category:
DC-DC Converters
Description:
Conv DC-DC 3V to 5.5V Step Down Single-Out 1.1V to 5.5V/3.3V/2.5V 2A 16Pin SSOP T/R
Updated Time: 2023/01/13 03:33:45 (UTC + 8)

MAX1644 DC-DC Converters Datasheet PDF

MAX1644EAE+T - Maxim Integrated Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Number of Pins
16 Pin
Case/Package
SSOP-16
Number of Outputs
1 Output
Output Voltage
≥2.50 V
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MAX1644EAE+T - Maxim Integrated Function Overview

The MAX1644EAE+T is a 2A, low voltage, step down regulator with synchronous rectification and internal switches in 16 pin SSOP package. Device features an internal synchronous rectification for high efficiency and reduced component count. External schottky diode is not required, the internal 0.10 ohm PMOS power switch and 0.10 ohm NMOS synchronous-rectifier switch easily deliver continuous load currents up to 2A. It produces a preset +3.3V or +2.5V output voltage or an adjustable output from +1.1V to VIN. It uses a unique current-mode, constant off-time, PWM control scheme which includes an Idle Mode to maintain high efficiency during light-load operation. The programmable constant-off-time architecture sets switching frequencies up to 350KHz allowing user to optimize performance trade-offs between efficiency, output switching noise, component size and cost. It is used in CPU I/O supply, +3.3V PC card and cardBus applications, CPU daughter card supply & desktop bus-termination boar
Input voltage range from 3V to 5.5V
Operating temperature range from 40°C to +85°C
Output accuracy is ±1%
Achieves efficiencies as high as 95%
Internal PMOS & NMOS switches, 70Mohm RON at VIN = +4.5V, 100Mohm RON at VIN = +3V
Maximum operating supply current is 360µA, shutdown supply current is < 1µA
Thermal shutdown
Adjustable soft start inrush current limiting
100% duty cycle during low dropout operation
Output short circuit protection
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