Switched Capacitor Voltage Converter - ON Semiconductor
Description
MAX828, MAX829
Switched Capacitor Voltage Converter
The MAX828 and MAX829 are CMOS charge pump voltage inverters that are designed for operation over an input voltage range of 1.
15 V to 5.
5 V with an output current capability in excess of 50 mA.
The operating current consumption is only 68 mA for the MAX828 and 118 mA for the MAX829.
The devices contain an internal oscillator that operates at 12 kHz for the MAX828 and 35 kHz for the MAX829.
The oscillator drives four low resistance MOSFET switches, yielding a low output resistance of 26 W and a voltage conversion efficiency of 99.
9%.
These devices require only two external capacitors, 10 mF for the MAX828 and 3.
3 mF for the MAX829, for a complete inverter making it an ideal solution for numerous battery powered and board level applications.
The MAX828 and MAX829 are available in the TSOP−5 package.
Features
• Operating Voltage Range of 1.
15 V to 5.
5 V • Output Current Capability in Excess of 50 mA • Low Current Consumption of 68 mA (MAX828) or
118 mA (MAX829)
• Operation at 12 kHz (MAX828) or 35 kHz (MAX829) • Low Output Resistance of 26 W • Space Saving TSOP−5 Package • Pb−Free Packages are Available
Typical Applications
• LCD Panel Bias • Cellular Telephones • Pagers • Personal Digital Assistants • Electronic Games • Digital Cameras • Camcorders • Hand−Held Instruments
1
5
Vin
2
3
4
−Vout
This device contains 77 active transistors.
Figure 1.
Typical Application
© Semiconductor Components Industries, LLC, 2005
1
December, 2005 − Rev.
4
http://onsemi.
com
TSOP−5 CASE 483 1
MARKING DIAGRAM
EAx AYW G G
1
EAx = Device Code x= A or B
A = Assembly Location Y = Year W = Work Week G = Pb−Free Package (Note: Microdot may be in either location)
PIN CONFIGURATION
Vout 1
5 C+
Vin 2
C− 3
4 GND
(Top View)
ORDERING INFORMATION
Device MAX828EUK
Package TSOP−5
Shipping† 3000 Tape/Reel
MAX828EUKG
TSOP−5 (Pb−Free)
3000 Tape/Reel
MAX829EUK
TSOP−5 3000 Tape/Reel
MAX829EUKG
TSOP−5 (Pb−Free)
3000 Tape/Ree...
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