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MAX1790

Maxim Integrated Products
Part Number MAX1790
Manufacturer Maxim Integrated Products
Description Low-Noise Step-Up DC-DC Converters
Published Mar 24, 2010
Detailed Description 19-1563; Rev 3; 9/05 KIT ATION EVALU LE B A IL A AV www.DataSheet4U.com Low-Noise Step-Up DC-DC Converters General De...
Datasheet PDF File MAX1790 PDF File

MAX1790
MAX1790

Overview
19-1563; Rev 3; 9/05 KIT ATION EVALU LE B A IL A AV www.
DataSheet4U.
com Low-Noise Step-Up DC-DC Converters General Description Features ♦ 90% Efficiency ♦ Adjustable Output from VIN to 12V ♦ 1.
6A, 0.
21Ω, 14V Power MOSFET (MAX1790) ♦ 2.
4A, 0.
15Ω, 14V Power MOSFET (MAX8715) ♦ +2.
6V to +5.
5V Input Range ♦ Pin-Selectable 640kHz or 1.
2MHz Switching Frequency ♦ 0.
1µA Shutdown Current ♦ Programmable Soft-Start ♦ Small 8-Pin µMAX Package MAX1790/MAX8715 The MAX1790/MAX8715 boost converters incorporate high-performance (at 1.
2MHz), current-mode, fixed-frequency, pulse-width modulation (PWM) circuitry with a built-in 0.
21Ω/0.
15Ω n-channel MOSFET to provide a highly efficient regulator with fast response.
High switching frequency (640kHz or 1.
2MHz selectable) allows easy filtering and faster loop performance.
An external compensation pin provides the user flexibility in determining loop dynamics, allowing the use of small, low equivalent-series-resistance (ESR) ceramic output capacitors.
The device can produce an output voltage as high as 12V from an input as low as 2.
6V.
Soft-start is programmed with an external capacitor, which sets the input-current ramp rate.
In shutdown mode, current consumption is reduced to 0.
1µA.
The MAX1790/ MAX8715 are available in a space-saving 8-pin µMAX® package.
The ultra-small package and high switching frequency allow the total solution to be less than 1.
1mm high.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Ordering Information PART MAX1790EUA MAX1790EUA+ MAX8715EUA MAX8715EUA+ TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 8 µMAX 8 µMAX 8 µMAX 8 µMAX Applications LCD Displays PCMCIA Cards Portable Applications Hand-Held Devices + Denotes lead-free package.
Typical Operating Circuit VIN 2.
6V TO 5V Pin Configuration TOP VIEW COMP IN ON/OFF SHDN 1 2 3 8 7 SS FREQ IN LX VOUT LX FB SHDN MAX1790 MAX8715 FREQ GND MAX1790 MAX8715 6 5 GND 4 μMAX SS COMP FB _____________...


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