12V, 30mA Flash Memory Programming Supply

12V Inductorless, Low-Profile Flash Memory Supply Fits in 0.1 Sq. Inch


The MAX662A is a regulated +12V, 30mA-output, charge-pump DC-DC converter. It provides the necessary +12V ±5% output to program byte-wide flash memories, and requires no inductors to deliver a guaranteed 30mA output from inputs as low as 4.75V. It fits into less than 0.1in² of board space. The MAX662A is a pin-compatible upgrade to the MAX662, and is recommended for new designs. The MAX662A offers lower quiescent and shut-down currents, and guarantees the output current over all temperature ranges.

The MAX662A is the first charge-pump boost converter to provide a regulated +12V output. It requires only a few inexpensive capacitors, and the entire circuit is completely surface-mountable.

A logic-controlled shutdown pin that interfaces directly with microprocessors reduces the supply current to only 0.5µA. The MAX662A comes in 8-pin narrow SO and DIP packages.

For higher-current flash memory programming solutions, refer to the data sheets for the MAX734 (120mA output current, guaranteed) and MAX732 (200mA output current, guaranteed) PWM, switch-mode DC-DC converters.

Or, refer to the MAX761 data sheet for a 150mA, PFM switch-mode DC-DC converter that operates from inputs as low as 2V.
MAX662A: Typical Operating Circuit MAX662A: Typical Operating Circuit Enlarge+

Key Features

  • Regulated +12V ±5% Output Voltage
  • 4.5V to 5.5V Supply Voltage Range
  • Fits in 0.1in²
  • Guaranteed 30mA Output
  • No Inductor—Uses Only 4 Capacitors
  • 185µA Quiescent Current
  • Logic-Controlled 0.5µA Shutdown
  • 8-Pin Narrow SO and DIP Packages


  • +12V Flash Memory Programming Supplies
  • Compact +12V Op-Amp Supplies
  • Dual-Output +12V and +20V Supplies
  • Switching MOSFETs in Low-Voltage Systems
Part Number Topology VIN
Unadj. VOUT
Oper. Freq.
Oper. Temp.
Package/Pins Budgetary
min max max typ See Notes
MAX662A  Regulated 4.5 5.5 0.5 12 0.03 500
-40 to +85
0 to +70
$2.06 @1k
See All Charge Pumps (44)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX662AEVKIT: Evaluation Kit for the MAX662A

Technical Documents

Tutorial 671 Energy Management for Small Portable Systems

Quality and Environmental Data

Product Reliability Reports: MAX662A.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Related Resources