MAX752
LAST TIME BUY+5V/Adjustable Step-Up Current-Mode DC-DC Converters
We Recommend Improved Performance Devices, MAX1700/MAX618, for New Designs
- Part Models
- 3
- 1ku List Price
- price unavailable
Overview
- 200mA Load Currents Guaranteed with No External MOSFET
- Step-Up from a 2.5V Input
- 170kHz High-Frequency Current-Mode PWM
- 82% to 87% Typical Efficiencies at Full Load (MAX731)
- 85% to 95% Typical Efficiencies at Full Load (MAX752)
- Small Inductor - No Component Design Required
- 2mA Quiescent Current (MAX752)
- Overcurrent and Soft-Start Protection
- 8-Pin DIP, 16-Pln Wide SO Packages
- Shutdown Pin
The MAX731 and MAX752 are fixed and adjustable CMOS, step-up, DC-DC switch-mode regulators. The MAX731 accepts a positive input voltage between +2.5V and +5.25V and converts it to a fixed +5V at 200mA, guaranteed over temperature. Typical full-load efficiencies are 82% to 87%. It requires a single inductor value of 22µH to function over the entire range, so no inductor related design is necessary. The MAX752 is an adjustable version that converts a minimum of + 1.8V to any higher voltage up to +15V, at up to 200mA. Typical full-load efficiencies are 85% to 95%. A single 50µH inductor is suitable for the entire range of operating conditions, so no inductor-related design is necessary.
The MAX731/MAX752 use current-mode pulse-width modulation (PWM) controllers to provide precise output regulation and low subharmonic noise. Typical no-load supply current is 2mA. A fixed 170kHz oscillator frequency allows easy filtering of ripple and noise, and provides for small external components.
The MAX731/MAX752 feature cycle-by-cycle current limiting, overcurrent limiting, external shutdown, and programmable soft-start protection.
For fixed + 12V and + 15V step-up regulators, refer to the MAX732/MAX733 data sheet. For lower-power step-up applications, refer to the MAX631/632/633 and MAX654-659 data sheets.
APPLICATIONS
- +5V-Logic Supply in +3V-Logic System
- DC-DC Converter Module Replacement
- Portable Instruments
- Laptop Computers
- Distributed Power Systems
- Cellular Phones
- Battery-Powered Equipment
Documentation
Data Sheet 1
Design Note 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 |
|---|---|---|---|
| MAX752CPA+ | PDIP | ||
| MAX752CWE+ | Small-Outline IC Wide (0.3in) | ||
| MAX752EPA+ | PDIP |
This is the most up-to-date revision of the Data Sheet.
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