MAX604ESA Datasheet Download

Part No.:
MAX604ESA
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Download Datasheet
Description:
[5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators]
File Size:
135 K
Page:
12 Pages
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Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
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19-0269; Rev 0; 9/94
5V/3.3V or Adjustable, Low-Dropout,
Low I
Q
, 500mA Linear Regulators
_______________General Description
The MAX603/MAX604 low-dropout, low quiescent cur-
rent, linear regulators supply 5V, 3.3V, or an adjustable
output for currents up to 500mA. They are available in a
1.8W SO package. Typical dropouts are 320mV at 5V
and 500mA, or 240mV at 3.3V and 200mA. Quiescent
currents are 15µA typ and 35µA max. Shutdown turns
off all circuitry and puts the regulator in a 2µA off mode.
A unique protection scheme limits reverse currents
when the input voltage falls below the output. Other fea-
tures include foldback current limiting and thermal
overload protection.
The output is preset at 3.3V for the MAX604 and 5V for
the MAX603. In addition, both devices employ Dual
Mode™ operation, allowing user-adjustable outputs
from 1.25V to 11V using external resistors. The input
voltage supply range is 2.7V to 11.5V.
The MAX603/MAX604 feature a 500mA P-channel
MOSFET pass transistor. This transistor allows the
devices to draw less than 35µA over temperature, inde-
pendent of the output current. The supply current
remains low because the P-channel MOSFET pass tran-
sistor draws no base currents (unlike the PNP transis-
tors of conventional bipolar linear regulators). Also,
when the input-to-output voltage differential becomes
small, the internal P-channel MOSFET does not suffer
from excessive base current losses that occur with sat-
urated PNP transistors.
____________________________Features
o
500mA Output Current, with Foldback Current
Limiting
o
High-Power (1.8W) 8-Pin SO Package
o
Dual Mode™ Operation: Fixed or Adjustable
Output from 1.25V to 11V
o
Large Input Range (2.7V to 11.5V)
o
Internal 500mA P-Channel Pass Transistor
o
15µA Typical Quiescent Current
o
2µA (Max) Shutdown Mode
o
Thermal Overload Protection
o
Reverse-Current Protection
MAX603/MAX604
______________Ordering Information
PART
MAX603CPA
MAX603CSA
MAX603C/D
MAX603EPA
MAX603ESA
MAX603MJA
MAX604CPA
MAX604CSA
MAX604C/D
MAX604EPA
MAX604ESA
MAX604MJA
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP**
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP**
________________________Applications
5V and 3.3V Regulators
1.25V to 11V Adjustable Regulators
Battery-Powered Devices
Pagers and Cellular Phones
Portable Instruments
Solar-Powered Instruments
* Dice are tested at T
A
= +25°C, DC parameters only.
** Contact factory for availability.
__________Typical Operating Circuit
__________________Pin Configuration
TOP VIEW
IN
OUT
OUTPUT
VOLTAGE
IN 1
GND 2
C
OUT
10µF
GND 3
OFF 4
8
7
OUT
GND
GND
SET
MAX603
MAX604
BATTERY
C
IN
10µF
OFF
GND
SET
MAX603
MAX604
6
5
DIP/SO
™ Dual Mode is a trademark of Maxim Integrated Products.
________________________________________________________________
Maxim Integrated Products
1
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