ICL828 Datasheet, PDF (1/7 Pages) Intersil Corporation – Switched-Capacitor Voltage Inverter

TM
Data Sheet
ICL828
June 2000 File Number 4835.1
Switched-Capacitor Voltage Inverter
The ICL828 IC performs supply voltage conversions from
positive to negative for an input range of +1.5V to +5.5V
resulting in complementary output voltages of -1.5V to -5.5V.
The ICL828 has a 12kHz internal oscillator and requires two
capacitors to invert the supply voltage. Cascading may be
made to increase the output voltage. The high efficiency
(greater than 90% over most of the load-current range) and
low operating current (60µA typical) make these devices
ideal for both battery-powered and board-level voltage
conversion applications.
Ordering Information
PART
TEMP.
NUMBER RANGE (^oC) PACKAGE PKG. NO BRAND
ICL828IH-T -40 to 85 5 Lead SOT23 P5.064 828
Block Diagram
NEGATIVE VOLTAGE CONVERTER
OUTPUT
VOLTAGE
INPUT
VOLTAGE
OUT
1
+
IN
2
C1+
5
+
3
C1-
4
GND
Features
• 5-Lead SOT23-5 Package
• 99% Open Circuit Voltage Conversion Efficiency
• Inverts Input Supply Voltage
• High Power Supply Efficiency
• Input Voltage Range . . . . . . . . . . . . . . . . . . +1.5V to +5.5V
• May be Cascaded to Increase Output Voltage
• Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA
• Quiescent Current . . . . . . . . . . . . . . . . . . . . . . . . . . 60µA
• Pin for Pin Compatible to MAX828
• Small Package Size
Applications
• Simple Conversion . . . . . . . . . . . . . . . . . . . . . +5V to -5V
• Voltage Multiplication . . . . . . . . . . . . . . . . . . V_OUT = -nV_IN
• Supply Splitter
- Operational Amplifiers
- Bias Supplies
• Hand Held Products
- Cell Phones
- PDAs
- GPS
- Pagers
• LCD Panels
Pinout
ICL828 (SOT23)
TOP VIEW
OUT 1
IN 2
C₁- 3
5 C₁+
4 GND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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