MAX751
LAST TIME BUY+5V-Output, Step-Up, Current-Mode PWM DC-DC Converter
Compact Step-Up Converter Circuit Fits in < 0.5 Sq. Inch
- Part Models
- 1
- 1ku List Price
- Starting From $3.71
Overview
- +5V Preset Output
- Guaranteed 15GmA Output Current
- 1.2V Start-Up Supply Voltage
- 88% Typical Efficiencies at Full Load
- Small 22µH Inductor - No Component Design Required
- 2mA Quiescent Current
- 35µA Logic-Controlled Shutdown Mode
- Overcurrent and Soft-Start Protection
- 170kHz High-Frequency Current-Mode PWM
- 8-Pin DIP and SO Packages
The MAX751 is a +5V-output, CMOS, step-up, switch-mode DC-DC converter. Minimum input start-up voltage is 1.2V. From a 2.7V supply, the output current capability is guaranteed to be 150mA. Battery-saving features include 86% typical full-load efficiency, 2mA operating quiescent supply current, and 35µA shutdown supply current. The shutdown mode can be directly controlled by a microprocessor via the logic-compatible SHON pin.
The MAX751 is tested in-circuit, so output power specifications are guaranteed over all line, load, and temperature ranges. The typical operating circuit uses tiny surface-mounted components, including a miniature 22µH inductor, and fits into less than 0.5in2.
The MAX751 uses current-mode pulse-width modulation (PWM) control to provide precise output regulation and low subharmonic noise. A fixed 170kHz oscillator frequency facilitates ripple filtering and allows for the use of tiny external capacitors.
For higher-current solutions, refer to the MAX731/MAX752 and MAX848/MAX849 data sheets and evaluation kit manuals. The MAX751 can be evaluated using the MAX731 evaluation kit {order MAX731EVKIT-DIP and a sample of the MAX751CPA).
APPLICATIONS
- Local +5V Supply in +3V-Only Systems Cellular Phones
- RF Transmitter Supply
- Palmtop and Notebook Computers
- Battery-Powered and Hand-Held Instruments
Documentation
Data Sheet 1
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX751CSA+ | Small-Outline IC Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 22, 2018 - 1702N ASSEMBLY |
||
| MAX751CSA+ | ||
This is the most up-to-date revision of the Data Sheet.
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