MAX743
PRODUCTIONDual-Output, Switch-Mode Regulator (+5V to ±15V or ±12V)
- Part Models
- 6
- 1ku List Price
- Starting From $8.85
Overview
- Generates ±1 00mA or ±125mA
- Specs Guaranteed for In-Circuit Performance
- ±4% Output Tolerance Max Over Temp, Line, and Load
- 82% Typ Efficiency
- Low-Noise, Current-Mode Feedback
- On-Board Current Limiting
- Thermal Shutdown Protection
- Undervoltage Lock-Out and Soft-Start
- Switches From ±1 SV to ±12V Under Logic Control
- Evaluation Kit Available
- Internal Power MOSFETs
The MAX743 DC-DC converter IC contains all the active circuitry needed to build small, dual-output power supplies. Relying on simple two-terminal inductors rather than transformers, the MAX743 regulates both outputs independently to within ±4% over all conditions of line voltage, temperature, and load current.
The MAX743 typically provides 75% to 82% efficiency over most of the load range. It operates with currentmode feedback at 200kHz, so it can be used with small, lightweight external components. Also, ripple and noise are easy to filter.
The MAX743 is inherently reliable due to its internal power transistors and monolithic construction. Thermal shutdown prevents overheating, and cycle-by-cycle current sensing protects the power-switch transistors. Other features include undervoltage lock-out and programmable soft-start.
Inductors, capacitors, and diodes to complement the MAX743 can be ordered directly from Maxim in production quantities (page 11 ). An evaluation kit for prototyping (MAX743EVKIT) is also available (page 9).
If higher load currents are needed, refer to the MAX742 data sheet for a device that drives external power MOSFETs.
APPLICATIONS
- DC-DC Converter Module Replacement
- Distributed Power Systems
- Computer Peripherals
- Portable Instruments
Documentation
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 |
|---|---|---|---|
| MAX743CPE+ | PDIP | ||
| MAX743CWE+ | Small-Outline IC Wide (0.3in) | ||
| MAX743CWE+T | Small-Outline IC Wide (0.3in) | ||
| MAX743EPE+ | PDIP | ||
| MAX743EWE+ | Small-Outline IC Wide (0.3in) | ||
| MAX743EWE+T | Small-Outline IC Wide (0.3in) |
This is the most up-to-date revision of the Data Sheet.