TC1121 Datasheet, PDF (4/14 Pages) Microchip Technology – 100mA Charge Pump Voltage Converter with Shutdown

TC1121
2.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1: PIN FUNCTION TABLE
Pin No.
(8-Pin MSOP,
PDIP, SOIC)
1
2
3
4
5
6
7
8
Symbol
Description
FC
CAP⁺
GND
CAP^–
OUT
SHDN
OSC
V⁺
Frequency control for internal oscillator, FC = open, F_OSC = 10kHz typ; FC = V⁺, F_OSC = 200kHz
typ; FC has no effect when OSC pin is driven externally.
Charge-pump capacitor, positive terminal.
Power-supply ground input.
Charge-pump capacitor, negative terminal.
Output, negative voltage.
Shutdown.
Oscillator control input. An external capacitor can be added to slow the oscillator. Take care to
minimize stray capacitance. An external oscillator also may be connected to overdrive OSC.
Power-supply positive voltage input.
DS21358B-page 4
 2002 Microchip Technology Inc.