1

Rev. 9-22-00

SP6830/6831 Low Power Voltage Inverters With Shutdown

© Copyright 2000 Sipex Corporation

FEATURES

s 99.9% Voltage Conversion Efficiency

s +1.15V to +5.3V Input Voltage Range

s Inverts Input Supply Voltage

s 70

µA Supply Current for the SP6830

s 200

µA Supply Current for the SP6831

s 35kHz Operating Frequency for the

SP6830

s 120kHz Operating Frequency for the

SP6831

s <1

µA Shutdown Current

s 6-pin SOT23-6 Package

s Ideal for +3.6V Lithium Ion Battery

Applications

s Reverse +3.6V Lithium Ion Battery

Protection

s 25mA Output Current

s 19

Ω Output Resistance

Low Power Voltage Inverters With Shutdown

SP6830/6831

DESCRIPTION

The SP6830/6831 devices are CMOS Charge Pump Voltage Inverters that can be imple-

mented into designs which require a negative voltage from a battery voltage source as low as

+1.15V or a power supply rail voltage as high as +5.3V. The SP6830/6831 devices are ideal

for both battery-powered and board level voltage conversion applications with a typical

operating current of 70

µA for the SP6830 and 200µA for the SP6831. These devices combine

an ultra-low shutdown current of <1

µA with high efficiency (>95% over most of its load-current

range) which are ideal for designs using batteries such as cell phones, PDAs, medical

instruments, and other portable equipment. The SP6830/6831 devices are available in a

space-saving 6-pin SOT23-6 Package.

C1-

C1+

GND

SP6830

SP6831

6

3

2

1

4

SHDN

5

APPLICATIONS

s Small LCD Negative Bias Voltage

s Power Amplifier Negative Bias Voltage

s +5V to -5V Voltage Conversion

®