TK75018
TK75018 is SWITCHED CAPACITOR VOLTAGE CONVERTER WITH REGULATOR manufactured by TOKO.
SWITCHED CAPACITOR VOLTAGE CONVERTER WITH REGULATOR APPLICATIONS s s s s Voltage Inverter Negative Voltage Doubler Voltage Regulator Positive Voltage Doubler TK75018
FB/SD CAP + V+
Features s s s s s 35 m A (typ.) Output Current Operating Range 3.5 to 7 V Reference and Error Amplifier for Regulation External Shutdown External Oscillator Synch
DESCRIPTION
The TK75018 is a monolithic switched capacitor converter with feedback control. With just two capacitors, the TK75018 can create a negative voltage supply which tracks a positive supply. As an alternative, the feedback pin can be used to establish regulation at a desired voltage, and it can also be used as a shutdown signal input. A single TK75018 can also be configured as a non-inverting step-up converter or dual output voltage doubler. With no external timing elements, the converter will selfoscillate at 25 k Hz, nominal. This frequency can also be user adjusted with a small capacitor or synchronized to another oscillator. Quiescent current is typically 2.5 m A. Standby current is guaranteed less than 200 µA over the full operating temperature and input voltage ranges.
GND CAP
- Vref VOUT
FB/SD CAP +
V+
GND CAP
- Vref VOUT
FB/SD NC CAP+ GND NC CAPNC
V+ NC OSC Vref NC NC VOUT
BLOCK DIAGRAM
V+
DRIVE Vref BANDGAP REFERENCE 1.25 V + DRIVE FB/SD CAP +
ORDERING INFORMATION
Package Code
OSC OSC CONTROL
Q VOUT Q DRIVE CAP
- Tape/Reel Code Temp. Range
DRIVE
PACKAGE CODE
D: DIP-8 M: SOP-8 V: TSSOP-14
TEMPERATURE RANGE
C: -20 TO 80 °C
TAPE/REEL CODE
TL: Tape Left
May 1999 TOKO, Inc.
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