TK75018DCTL TOKO [TOKO, Inc], TK75018DCTL Datasheet

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TK75018DCTL

Manufacturer Part Number
TK75018DCTL
Description
SWITCHED CAPACITOR VOLTAGE CONVERTER WITH REGULATOR
Manufacturer
TOKO [TOKO, Inc]
Datasheet
May 1999 TOKO, Inc.
FEATURES
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 self-
oscillate at 25 kHz, nominal. This frequency can also be
user adjusted with a small capacitor or synchronized to
another oscillator.
Quiescent current is typically 2.5 mA. Standby current is
guaranteed less than 200
temperature and input voltage ranges.
PACKAGE CODE
D: DIP-8
M: SOP-8
V: TSSOP-14
Package Code
35 mA (typ.) Output Current
Operating Range 3.5 to 7 V
Reference and Error Amplifier for Regulation
External Shutdown
External Oscillator Synch
ORDERING INFORMATION
TK75018
TEMPERATURE RANGE
C: -20 TO 80 C
C
A over the full operating
Temp. Range
Tape/Reel Code
TAPE/REEL CODE
TL: Tape Left
APPLICATIONS
Voltage Inverter
Negative Voltage Doubler
Voltage Regulator
Positive Voltage Doubler
FB/SD
SWITCHED CAPACITOR VOLTAGE
OSC
GND
V ref
V +
CONVERTER WITH REGULATOR
REFERENCE
BANDGAP
OSC
1.25 V
BLOCK DIAGRAM
+
-
TK75018
CONTROL
FB/SD
CAP +
GND
CAP -
FB/SD
CAP +
FB/SD
CAP +
CAP -
CAP -
NC
NC
NC
GND
GND
Q
Q
DRIVE
DRIVE
DRIVE
DRIVE
TK75018
Page 1
V +
OSC
V ref
V OUT
V +
OSC
V ref
V OUT
CAP +
CAP -
V OUT
V +
NC
OSC
V ref
NC
NC
V OUT

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TK75018DCTL Summary of contents

Page 1

FEATURES 35 mA (typ.) Output Current Operating Range 3 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 ...

Page 2

TK75018 ABSOLUTE MAXIMUM RATINGS Supply Voltage V For Doubler Conf. ....................... Supply Voltage V For Regulating Conf. .................. Power Dissipation TK75018M (Note 1) .............. 600 mW Power Dissipation TK75018D (Note 2) ............ 1000 mW ...

Page 3

V + CAP + + C IN GND 2.2 µF CAP - V OUT NOTE 4 TEST CIRCUIT (Non Regulating) TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT VOLTAGE REGULATING @ 0 mA LOAD TEMPERATURE VS. -2 -2.85 -2.9 ...

Page 4

TK75018 TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) SUPPLY CURRENT vs. TEMPERATURE @ 2.8 2.6 2.4 2.2 Note 6 Test Circuit 2 - 100 TEMPERATURE ( C) STANDBY CURRENT VS. TEMPERATURE 100 ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) OUTPUT VOLTAGE LOSS VS. OSCILLATOR FREQUENCY INVERTER CONFIGURATION 2 2.2 µF TANTALUM C OUT = 33 µF TANTALUM I OUT =10 mA 1.0 Note 4 Test Circuit OSC (kHz) ...

Page 6

TK75018 The illustration in Figure 2 represents an equivalent circuit to the basic example of a switched capacitor circuit in Figure EQUIV C 2 FIGURE 2: SWITCHED CAPACITOR EQUIVALENT CIRCUIT The efficiency of the ideal converter ...

Page 7

INPUT CAPACITOR CHARGING PINS (CAP The positive driving pin of C (CAP +) charges the positive IN node of the capacitor to V during t IN ground during t . The negative driving pin of C DIS (CAP -) pulls ...

Page 8

TK75018 0.76 SOP Recommended Mount Pad 1 4 4.89 e 0.42 1.27 0.1 l 0.12 Dimensions are shown in millimeters Tolerance: x.x = 0.2 mm (unless otherwise specified) DIP Marking Lot Number Country of Origin 1 ...

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