參數(shù)資料
型號(hào): MAX870
廠商: Maxim Integrated Products, Inc.
英文描述: Switched-Capacitor Voltage Inverters
中文描述: 開關(guān)電容電壓反相器
文件頁數(shù): 1/8頁
文件大?。?/td> 97K
代理商: MAX870
_______________General Desc ription
The ultra-small MAX870/MAX871 monolithic, CMOS
charge-pump inverters accept input voltages ranging
from +1.4V to +5.5V. The MAX870 operates at 125kHz,
and the MAX871 operates at 500kHz. Their high efficien-
cy (90%) and low operating current (0.7mA for the
MAX870) make these devices ideal for both battery-pow-
ered and board-level voltage-conversion applications.
Oscillator control circuitry and four power MOSFET
switches are included on-chip. A typical MAX870/
MAX871 application is generating a -5V supply from a
+5V logic supply to power analog circuitry. Both parts
come in a 5-pin SOT23-5 package and can deliver 25mA
with a voltage drop of 500mV.
For applications requiring more power, the MAX860
delivers up to 50mA with a voltage drop of 600mV, in a
space-saving μMAX package.
________________________Applic ations
Local -5V Supply from 5V Logic Supply
Small LCD Panels
Cell Phones
Medical Instruments
Handy-Terminals, PDAs
Battery-Operated Equipment
____________________________Features
o
5-Pin SOT23-5 Package
o
99% Voltage Conversion Efficiency
o
Invert Input Supply Voltage
o
0.7mA Quiescent Current (MAX870)
o
+1.4V to +5.5V Input Voltage Range
o
Require Only Two Capacitors
o
25mA Output Current
o
Shutdown Control
M
S witc hed-Capac itor Voltage Inverters
________________________________________________________________ Maxim Integrated Products
1
TOP VIEW
IN
GND
C1-
C1+
OUT
SOT23-5
1
5
MAX870
MAX871
2
3
4
__________________Pin Configuration
NEGATIVE VOLTAGE CONVERTER
C1+
C1-
IN
OUT
GND
INPUT
SUPPLY
VOLTAGE
NEGATIVE
OUTPUT
VOLTAGE
MAX870
MAX871
4
3
5
2
1
__________Typic al Operating Circ uit
19-1240; Rev 0; 6/97
PART
MAX870
C/D
MAX870EUK
MAX871
C/D
MAX871EUK
-40°C to +85°C
0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-
PACKAGE
Dice*
5 SOT23-5
Dice*
5 SOT23-5
______________Ordering Information
*Dice are tested at T
A
= +25°C.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
-40°C to +85°C
SOT
TOP MARK
ABZN
ABZO
相關(guān)PDF資料
PDF描述
MAX870EUK Switched-Capacitor Voltage Inverters
MAX871EUK Switched-Capacitor Voltage Inverters
MAX872 10μA, Low-Dropout, Precision Voltage References(10μA,低壓降,2.5V高精度基準(zhǔn)電壓)
MAX877 Adjustable-Output, DC-DC Converters(3.3V/3V輸出,1.8V~6V輸入,步升/步降DC-DC變換器)
MAX878 Adjustable-Output, DC-DC Converters(3.3V/3V輸出,1.8V~6V輸入,步升/步降DC-DC變換器)
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