General Description
The MAX1658/MAX1659 linear regulators maximize battery life by combining ultra-low supply currents and low dropout voltages. They feature Dual Mode™ operation, which presets the output to 3.3V (MAX1658) or 5V (MAX1659), or permits it to be adjusted between 1.25V and 16V. The regulator supplies up to 350mA, with a typical dropout of 650mV for the MAX1658 and 490mV for the MAX1659. With their P-channel MOSFET pass transistor, these devices maintain a low quiescent current from zero output current to the full 350mA, even in dropout. They support input voltages ranging from 2.7V to 16.5V.
FEATUREs
♦ Wide Input Voltage Range: 2.7V to 16.5V
♦ Low, 490mV Dropout at 350mA Output Current
(MAX1659)
♦ 30µA Supply Current
♦ 1µA Max Shutdown Current
♦ High-Power (1.2W) 8-Pin SO Package
♦ Dual Mode Operation Output:
Fixed 3.3V (MAX1658)
Fixed 5.0V (MAX1659)
or Adjustable (1.25V to 16V)
♦ Thermal Overload Protection
♦ Current-Limit Protection
♦ Reverse Battery Protection
APPLICATIONs
Digital Cordless Phones
PCS Phones
Cellular Phones
PCMCIA Cards
Modems
Hand-Held Instruments
Palmtop Computers
Electronic Planners