NCP1729 Datasheet, PDF (1/22 Pages) ON Semiconductor – Switched Capacitor Voltage Inverter

NCP1729
Switched Capacitor
Voltage Inverter
The NCP1729 is a CMOS charge pump voltage inverter that is
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 122 mA, and a power saving shutdown
input is provided to further reduce the current to a mere 0.4 mA. The
device contains a 35 kHz oscillator that drives four low resistance
MOSFET switches, yielding a low output resistance of 26 W and a
voltage conversion efficiency of 99%. This device requires only two
external 3.3 mF capacitors for a complete inverter making it an ideal
solution for numerous battery powered and board level applications.
The NCP1729 is available in the space saving TSOP−6 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 122 mA
• Power Saving Shutdown Input for a Reduced Current of 0.4 mA
• Operation at 35 kHz
• Low Output Resistance of 26 W
• Space Saving TSOP−6 Package
• Pb−Free Package is Available
Typical Applications
• LCD Panel Bias
• Cellular Telephones
• Pagers
• Personal Digital Assistants
• Electronic Games
• Digital Cameras
• Camcorders
• Hand Held Instruments
1
6
V_in
2
5
3
4
−V_out
http://onsemi.com
MARKING
DIAGRAM
TSOP−6
6
(SOT23−6)
1
SN SUFFIX
EADYW
CASE 318G
1
EAD = Device Code
Y = Year
W = Work Week
PIN CONNECTIONS
V_out 1
V_in 2
C− 3
6 C+
5 SHDN
4 GND
(Top View)
ORDERING INFORMATION
Device
Package
Shipping^†
NCP1729SN35T1
TSOP−6
3000 /
Tape & Reel
NCP1729SN35T1G TSOP−6
3000 /
(Pb−Free) 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.
This device contains 77 active transistors.
Figure 1. Typical Application
© Semiconductor Components Industries, LLC, 2004
1
June, 2004 − Rev. 3
Publication Order Number:
NCP1729/D