MAX829 Datasheet, PDF (1/18 Pages) ON Semiconductor – Switched Capacitor Voltage Converter

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
space saving Thin SOT−23−5 package.
Features
• Pb−Free Packages are Available
• 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 Thin SOT−23−5 Package
Typical Applications
• LCD Panel Bias
• Cellular Telephones
• Pagers
• Personal Digital Assistants
• Electronic Games
• Digital Cameras
• Camcorders
• Hand−Held Instruments
−V_out
1
5
V_in
2
3
4
This device contains 77 active transistors.
Figure 1. Typical Application
http://onsemi.com
5
1
MARKING
DIAGRAM
5
THIN SOT−23−5
CASE 483
xxxYW
1
xxx = Device Code
MAX828 = EAA
MAX829 = EAB
Y = Year
W = Work Week
PIN CONFIGURATION
V_out ¹
V_in ²
C^{− 3}
5 _C+
4 _GND
Thin SOT−23−5*
(Top View)
ORDERING INFORMATION
Device
Package
Shipping^†
MAX828EUK
Thin
3000 Tape/Reel
SOT−23−5
MAX828EUKG
Thin
SOT−23−5
(Pb−Free)
3000 Tape/Reel
MAX829EUK
MAX829EUKG
Thin
SOT−23−5
Thin
SOT−23−5
(Pb−Free)
3000 Tape/Reel
3000 Tape/Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2004
1
July, 2004 − Rev. 3
Publication Order Number:
MAX828/D