MAX734
PRODUCTION+12V, 120mA Flash Memory Programming Supply
Tiny Flash Memory Supply Circuit Fits in 0.3 Sq. Inch
- Part Models
- 4
- 1ku List Price
- Starting From $3.66
Overview
- Regulated +12V ±5% Output
- Guaranteed 120mA Output Current
- Tiny Flash Memory Programming Circuit:
- Fits into 0.3in
- 8-Pin SO and Plastic DIP Packages
- Uses Tiny 18μH Inductor and 33μF Capacitors
- Logic-Controlled 70μA Shutdown
- 85% Typical Efficiency
The MAX734 is a + 12V-output, step-up, DC-DC switch-mode regulator. It delivers a guaranteed 120mA from a 4. 75V input, and is ideal for programming flash memories. Available in 8-pin SO and DIP packages, it uses only a diode, an 18μH inductor, and two 33μF capacitors. The entire circuit is completely surface-mountable and fits into less than 0.3in2. The MAX734 also features a logic-controlled shutdown pin that allows direct microprocessor (μP) control. In-circuit testing ensures guaranteed output specifications over load, line, and temperature limits.
Battery-saving features include 85% efficiency, 1.2mA operating quiescent supply current, and 70μA _shutdown supply current. The operating supply current can be reduced to less than 500μA by toggling the shutdown pin with the μP.
The MAX734 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 the use of tiny external capacitors.
For higher-current solutions up to 250mA, refer to the MAX732 data sheet and evaluation kit (MAX732EVKIT-SO).
APPLICATIONS
- + 12V Flash Memory Programming Supplies
- PCMCIA +12V Supplies
- Solid-State Disk Drives
- Palmtop Computers
- Compact + 12V Op-Amp Supplies
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 |
|---|---|---|---|
| MAX734CSA+ | Small-Outline IC Narrow (0.15in) | ||
| MAX734CSA+T | Small-Outline IC Narrow (0.15in) | ||
| MAX734ESA+ | Small-Outline IC Narrow (0.15in) | ||
| MAX734ESA+T | Small-Outline IC Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Dec 9, 2025 - 2444 WAFER FAB |
||
| MAX734CSA+ | PRODUCTION | |
| MAX734CSA+T | PRODUCTION | |
| MAX734ESA+ | PRODUCTION | |
| MAX734ESA+T | PRODUCTION | |
|
May 22, 2018 - 1702N ASSEMBLY |
||
| MAX734CSA+ | PRODUCTION | |
| MAX734CSA+T | PRODUCTION | |
|
Oct 30, 2020 - 1702R2 ASSEMBLY |
||
| MAX734ESA+ | PRODUCTION | |
| MAX734ESA+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Switching Regulators & Controllers 1 | ||
| MAX732 | LAST TIME BUY | +12V/+15V Step-Up Current-Mode PWM Regulators |
Evaluation Kits
Evaluation Kit for the MAX734
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