MAX1658 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 350mA, 16.5V Input, Low-Dropout Linear Regulators

19-1263; Rev 0; 7/97
350mA, 16.5V Input,
Low-Dropout Linear Regulators
_______________General Description
The MAX1658/MAX1659 linear regulators maximize bat-
tery 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 cur-
rent from zero output current to the full 350mA, even in
dropout. They support input voltages ranging from 2.7V
to 16.5V.
The MAX1658/MAX1659 feature a 1µA shutdown mode,
reverse battery protection, short-circuit protection, and
thermal shutdown. They are available in a special high-
power (1.2W), 8-pin SO package designed specifically
for compact applications.
________________________Applications
Digital Cordless Phones
PCS Phones
Cellular Phones
PCMCIA Cards
Modems
Hand-Held Instruments
Palmtop Computers
Electronic Planners
__________Typical Operating Circuit
____________________________Features
o Wide Input Voltage Range: 2.7V to 16.5V
o Low, 490mV Dropout at 350mA Output Current
(MAX1659)
o 30µA Supply Current
o 1µA Max Shutdown Current
o High-Power (1.2W) 8-Pin SO Package
o Dual Mode Operation Output:
Fixed 3.3V (MAX1658)
Fixed 5.0V (MAX1659)
or Adjustable (1.25V to 16V)
o Thermal Overload Protection
o Current-Limit Protection
o Reverse Battery Protection
______________Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
MAX1658C/D
0°C to +70°C
Dice*
MAX1658ESA -40°C to +85°C
8 SO
MAX1659C/D
0°C to +70°C
Dice*
MAX1659ESA -40°C to +85°C
8 SO
*Dice are tested at T_A = +25°C, DC parameters only.
__________________Pin Configuration
INPUT
UP TO 16.5V
ON
OFF
OUTPUT
3.3V OR 5V,
OR ADJ. (DOWN TO 1.25V);
UP TO 350mA
IN
OUT
MAX1658
MAX1659
SHDN
GND
SET
TOP VIEW
SET 1
SHDN 2
IN 3
OUT 4
MAX1658
MAX1659
8 GND
7 IN
6 IN
5 OUT
SO
Dual Mode is a trademark of Maxim Integrated Products.
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