Product Summary

The MAX1771CSA is a step-up switching controller. The device provides 90% efficiency over a 30mA to 2A load. A unique current-limited pulse-frequency-modulation (PFM) control scheme gives the MAX1771CSA the benefits of pulse-width-modulation (PWM) converters (high efficiency at heavy loads), while using less than 110μA of supply current (vs.2mA to 10mA for PWM converters). The applications of the MAX1771CSA include Positive LCD-Bias Generators, Flash Memory Programmers, High-Power RF Power-Amplifier Supply, Palmtops/ Hand-Held Terminals, Battery-Powered Applications and Portable Communicators.

Parametrics

MAX1771CSA absolute maximum ratings: (1)Supply Voltage, V+ to GND: -0.3V, 17V; (2)EXT, CS, REF, SHDN, FB to GND: -0.3V, (V+ + 0.3V); (3)GND to AGND: 0.1V, -0.1V; (4)Continuous Power Dissipation: 727mW; (5)Operating Temperature Ranges: 0 to +70℃; (6)Junction Temperatures: +150℃; (7)Storage Temperature Range: -65 to +160℃; (8)Lead Temperature (soldering, 10sec): +300℃.

Features

MAX1771CSA features: (1)90% Efficiency for 30mA to 2A Load Currents; (2)Up to 24W Output Power; (3)110μA Max Supply Current; (4)5μA Max Shutdown Current; (5)2V to 16.5V Input Range; (6)Preset 12V or Adjustable Output Voltage; (7)Current-Limited PFM Control Scheme; (8)Up to 300kHz Switching Frequency; (9)Evaluation Kit Available.

Diagrams

MAX1771CSA Pin Configuration

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
MAX1771CSA
MAX1771CSA

Maxim Integrated Products

DC/DC Switching Controllers 12/Adj V Low IQ Step-Up

Data Sheet

0-2500: $1.33
MAX1771CSA+
MAX1771CSA+

Maxim Integrated Products

DC/DC Switching Controllers 12/Adj V Low IQ Step-Up

Data Sheet

0-1: $3.29
1-25: $2.21
25-50: $1.60
50-100: $1.58
MAX1771CSA+T
MAX1771CSA+T

Maxim Integrated Products

DC/DC Switching Controllers 12/Adj V Low IQ Step-Up

Data Sheet

0-2080: $1.38
2080-2500: $1.38
MAX1771CSA-G05
MAX1771CSA-G05

Maxim Integrated Products

DC/DC Switching Controllers 12/Adj V Low IQ Step-Up

Data Sheet

0-1: $3.31
1-25: $2.21
25-50: $1.63
50-100: $1.50
MAX1771CSA-T
MAX1771CSA-T

Maxim Integrated Products

DC/DC Switching Controllers 12/Adj V Low IQ Step-Up

Data Sheet

0-2080: $1.38
2080-2500: $1.38
MAX1771CSA-TG05
MAX1771CSA-TG05

Maxim Integrated Products

DC/DC Switching Controllers 12/Adj V Low IQ Step-Up

Data Sheet

0-2080: $1.38
2080-2500: $1.38