APPLICATION MANUAL
Negative-input Negative-output Regulator IC
TK721xxCS
CONTENTS
1 . DESCRIPTION
2 . FEATURES
3 . APPLICATIONS
4 . PIN CONFIGURATION
5 . PACKAGE OUTLINE
5. ORDERING INFORMATION
6 . BLOCK DIAGRAM
7 . ABSOLUTE MAXIMUM RATINGS
8 . ELECTRICAL CHARACTERISTICS
9 . TEST CIRCUIT
10 . TYPICAL CHARACTERISTICS
11 . PIN DESCRIPTION
12 . APPLICATIONS INFORMATION
13 . NOTES
14 . OFFICES
2
2
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2
2
3
4
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5
6
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GC3-K020C
Page 1
TK721xxCS
Negative-input Negative-output Regulator IC
TK721xxCS
1. DESCRIPTION
TK721xxCS series is a negative-input negative-output
regulator IC using silicon monolithic bipolar structure
which can supply 150mA output current.
The output voltage can be set from -2.0 to -9.5V, which is
trimmed in high accuracy.
TK721xxCS is supplied with ON/OFF terminal and noise
reduction terminal. The ON/OFF control can be
controlled directly with positive logic or CPU.
Moreover, TK721xxCS is provided with short-circuit
protection and thermal shutdown.
4. PIN CONFIGURATION
Top View
1
Cont
Vout
5
2
VEE
3
Np
GND
4
2. FEATURES
High Output Voltage Accuracy(±2.0% or ±60 mV)
ON/OFF control available (High OFF)
Built-in
short-circuit protection and thermal shutdown.
Guarantee 150mA output current(
200mA peak)
Ceramic capacitor available for application
5. PACKAGE OUTLINE
SOT23-5
Mark
0.7
5
4
1.6
±0.2
Battery Powered Systems
DSC, CCD bias, GaAs bias.
1
3
0.4
-0.05
0.95
0.95
+0.10
0.95
0.95
Reference Mount Pad
0.1
M
2.9
±0.2
1.3max
1.1
±0.1
0.15
+0.10
-0.05
0 ~0.1
(0.3)
0.1
2.8
±0.2
GC3-K020C
2.4
3. APPLICATIONS
1.0
Page 2
TK721xxCS
5. ORDERING INFORMATION
Package
Vout
-2.0
-2.5
-3.0
-3.5
-4.0
-4.5
-5.0
-5.5
-6.0
-6.5
-7.0
-7.5
-8.0
-8.5
-9.0
-9.5
Part Number
TK72120CS
TK72125CS
TK72130CS
TK72135CS
TK72140CS
TK72145CS
TK72150CS
TK72155CS
TK72160CS
TK72165CS
TK72170CS
TK72175CS
TK72180CS
TK72185CS
TK72190CS
TK72195CS
Marking
K20
K25
K30
K35
K40
K45
K50
K55
K60
K65
K70
K75
K80
K85
K90
K95
SOT23-5
For other voltages, please contact the
ASAHI KASEI TOKO POWER DEVICES
sales office.
GC3-K020C
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TK721xxCS
6. BLOCK DIAGRAM
Cont
90k
Vout
VEE
Bandgap
Reference
Over Heat &
Over Current
Protection
Np
GND
Control:Low Level On
7. ABSOLUTE MAXIMUM RATINGS
T
a
=25°C
Parameter
Absolute Maximum Ratings
Supply Voltage
Control pin Voltage
Reverse Bias Voltage
Power Dissipation
(SOT23-5 Simple substance)
Storage Temperature Range
Operating Condition
Operating Temperature Range
Operating Voltage Range
Output short-circuit current
Symbol
Vin
Vcont
Vrev
P
D
T
stg
T
OP
V
OP
Ishort
Rating
-20 ~ +0.3
-0.4 ~ +5
-20 ~ +0.3
500
-55 ~ +150
-40 ~ 85
-19
300
Units
V
V
V
mW
°
C
°
C
Conditions
|Vin|+|Vcont|£20V
|Vin|+|Vcont|£19V
Vin-Vout£0.3V
P
D
must be decreased at the rate of 4mW/°C
for operation above 25°C.
V
mA
|Vin|+|Vcont|£19V
Over Current Protection
Absolute maximum ratings are limits beyond which damage to the device may occur.
If the operation exceeds any of these standards, quality cannot be guaranteed.
GC3-K020C
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