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TC7660MOA

Description
SWITCHED CAPACITOR REGULATOR, PDIP8
CategoryPower/power management   
ManufacturerMicrochip
Websitehttps://www.microchip.com
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TC7660MOA Overview

SWITCHED CAPACITOR REGULATOR, PDIP8

TC7660
Charge Pump DC-to-DC Voltage Converter
Features
Wide Input Voltage Range: +1.5V to +10V
Efficient Voltage Conversion (99.9%, typ)
Excellent Power Efficiency (98%, typ)
Low Power Consumption: 80 µA (typ) @ V
IN
= 5V
Low Cost and Easy to Use
- Only Two External Capacitors Required
• Available in 8-Pin Small Outline (SOIC), 8-Pin
PDIP and 8-Pin CERDIP Packages
• Improved ESD Protection (3 kV HBM)
• No External Diode Required for High-Voltage
Operation
Package Types
PDIP/CERDIP/SOIC
NC
1
8
V
+
OSC
LOW
VOLTAGE (LV)
V
OUT
CAP
+
2
GND 3
CAP
-
4
TC7660
7
6
5
General Description
The TC7660 device is a pin-compatible replacement
for the industry standard 7660 charge pump voltage
converter. It converts a +1.5V to +10V input to a corre-
sponding -1.5V to -10V output using only two low-cost
capacitors, eliminating inductors and their associated
cost, size and electromagnetic interference (EMI).
The on-board oscillator operates at a nominal fre-
quency of 10 kHz. Operation below 10 kHz (for lower
supply current applications) is possible by connecting
an external capacitor from OSC to ground.
The TC7660 is available in 8-Pin PDIP, 8-Pin Small
Outline (SOIC) and 8-Pin CERDIP packages in
commercial and extended temperature ranges.
Applications
RS-232 Negative Power Supply
Simple Conversion of +5V to ±5V Supplies
Voltage Multiplication V
OUT
= ± n V
+
Negative Supplies for Data Acquisition Systems
and Instrumentation
Functional Block Diagram
V
+
CAP
+
8
2
OSC
LV
7
6
RC
Oscillator
2
Voltage
Level
Translator
4
CAP-
5
Internal
Internal
Voltage
Voltage
Regulator
Regulator
V
OUT
TC7660
3
GND
Logic
Network
2002-2011 Microchip Technology Inc.
DS21465C-page 1

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