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MAX883CPA 参数 Datasheet PDF下载

MAX883CPA图片预览
型号: MAX883CPA
PDF下载: 下载PDF文件 查看货源
内容描述: 5V / 3.3V或可调,低压差,低IQ , 200mA线性稳压器 [5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators]
分类和应用: 稳压器
文件页数/大小: 16 页 / 137 K
品牌: MAXIM [ MAXIM INTEGRATED PRODUCTS ]
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19-0275; Rev 0; 12/94
5V/3.3V or Adjustable, Low-Dropout,
Low I
Q
, 200mA Linear Regulators
_______________General Description
The
MAX882/MAX883/MAX884 linear regulators maxi-
mize battery life by combining ultra-low supply currents
and low dropout voltages. They feature 200mA output
current capability at up to +125°C junction temperature
and come in a 1.5W SOIC package. The 1.5W package
(compared to 0.47W for standard SOIC packages)
allows a wider operating range for the input voltage and
output current. The MAX882/MAX883/MAX884 use a P-
channel MOSFET pass transistor to maintain a low 11µA
(15µA max) supply current from no-load to the full
200mA output. Unlike earlier bipolar regulators, there are
no PNP base current losses that increase with output
current. And, in dropout, the MOSFET does not suffer
from excessive base currents that occur when PNP tran-
sistors go into saturation. Typical dropout voltages are
220mV at 5V and 200mA, or 320mV at 3.3V and 200mA.
The MAX882 features a 7µA standby mode that disables
the output but keeps the reference, low-battery compara-
tor, and biasing circuitry alive. The MAX883/MAX884 fea-
ture a shutdown (OFF) mode that turns off all circuitry,
reducing supply current to less than 1µA. All three
devices include a low-battery-detection comparator, fold-
back current limiting, reverse-current protection, and
thermal overload protection.
The output is preset at 3.3V for the MAX882/MAX884
and 5V for the MAX883. In addition, all devices employ
Dual Mode™ operation, allowing user-adjustable outputs
from 1.25V to 11V using external resistors. The input volt-
age supply range is 2.7V to 11.5V.
For low-dropout linear regulators with output currents up
to 500mA, refer to the MAX603/MAX604 data sheet.
____________________________Features
o
Guaranteed 200mA Output Current at
T
J
= +125°C, with Foldback Current Limiting
o
High-Power (1.5W) 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 1.1Ω P-Channel Pass Transistor
Draws No Base Current
o
Low 220mV Dropout Voltage at 200mA
Output Current
o
11µA Typical Quiescent Current
o
1µA (max) Shutdown Mode or 7µA (typ)
Standby Mode
o
Low-Battery Detection Comparator
o
Reverse-Current Protection
o
Thermal Overload Protection
MAX882/MAX883/MAX884
______________Ordering Information
PART
MAX882CPA
MAX882CSA
MAX882C/D
MAX882EPA
MAX882ESA
MAX882MJA
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
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP**
________________________Applications
Pagers and Cellular Phones
3.3V and 5V Regulators
1.25V to 11V Adjustable Regulators
High-Efficiency Linear Regulators
Battery-Powered Devices
Portable Instruments
Solar-Powered Instruments
Ordering Information continued at end of data sheet.
* Dice are tested at T
J
= +25°C, DC parameters only.
** Contact factory for availability.
__________Typical Operating Circuit
ON/OFF
OFF (STBY)
OUTPUT
VOLTAGE
__________________Pin Configuration
TOP VIEW
LBO
SET
GND
OUT
( ) ARE FOR MAX882
1
2
3
4
8 LBI
INPUT
VOLTAGE
C
IN
O.1µF
BATTERY
IN
LBI
MAX882
MAX883
MAX884
GND
OUT
MAX882
MAX883
MAX884
DIP/SO
7 OFF (STBY)
6 GND
5
IN
SET
C
OUT
2.2µF
( ) ARE FOR MAX882
™Dual-Mode
is a trademark of Maxim Integrated Products.
________________________________________________________________
Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.