Key facts
- Brand
- Maxim
- Model
- MAX734
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-05
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Maxim MAX734 Datasheet
The Maxim MAX734 is a +12 V step‑up, current‑mode PWM DC‑DC switch‑mode regulator designed for flash‑memory programming supplies and other low‑power applications. It delivers a guaranteed 120 mA output current from a 4.75 V input and features a logic‑controlled shutdown pin for power‑saving operation.
Typical applications include PCMCIA +12 V supplies, solid‑state disk drives, palmtop computers, and compact op‑amp supplies. The device offers 85 % typical efficiency, a 1.23 V band‑gap reference, and selectable soft‑start timing via the SS pin. Design guidance covers inductor and output‑filter capacitor selection, PCB layout, and methods to reduce quiescent current.
Maxim MAX734 specifications
| Output Current | 120 mA (guaranteed) |
|---|---|
| Typical Efficiency | 85 % |
| Quiescent Supply Current (normal operation) | 1.2 mA |
| Shutdown Supply Current | 70 pA |
| Reference Voltage | 1.23 V |
| Operating Temperature Range | 40 °C to +85 °C |
| Storage Temperature Range | 65 °C to +160 °C |
Source: Maxim MAX734 Datasheet
All Maxim MAX734 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How can the quiescent supply current be reduced?
By toggling the SHDN pin, the supply current can be lowered to less than 500 µA.
From: Maxim MAX734 Datasheet
What is the typical efficiency of the MAX734?
The device operates at about 85 % typical efficiency.
From: Maxim MAX734 Datasheet
What is the regulated output voltage of the MAX734?
The device provides a regulated +12 V output with a tolerance of ±5 %.
From: Maxim MAX734 +12V 120mA Flash Memory Programming Supply Datasheet
How much output current can the MAX734 deliver?
It guarantees an output current of 120 mA.
From: Maxim MAX734 +12V 120mA Flash Memory Programming Supply Datasheet