APPLICATION MANUAL
LDO Regulator IC
TK705xxS/TK707xxS,TK706xxH/TK708xxH
CONTENTS
1 . DESCRIPTION
2 . FEATURES
3 . APPLICATIONS
4 . PIN CONFIGURATION
5 . PACKAGE OUTLINE
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
2
2
3
5
5
6
9
10
20
21
25
25
GC3-K028A
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TK705xxS/TK707xxS,TK706xxH/TK708xxH
TK705xxS/TK707xxS,TK706xxH/TK708xxH
1. DESCRIPTION
TK705xxS/TK707xxS and TK706xxH/TK708xxH is a
low dropout linear regulator with ON/OFF control, which
can supply 100mA load current.
The IC is an integrated circuit with a silicon monolithic
bipolar structure.
The output voltage, trimmed with high accuracy, is
available from 1.5 to 5.0V in 0.1V steps.
The packages are the small and thin SON2017-6, and
the extremely versatile SOT23-5. The IC is designed for
portable applications with space requirements, battery
powered system and any electronic equipment.
Two kinds of pin configuration can be selected for each
package.
The over current, over heat sensor and reverse bias over
current protection circuits are built-in.
ESD is also high, so it won’t break easily. It is possible
to use at ease.
4. PIN CONFIGURATION
Top View
· SOT23-5
TK705xxS
Vcont
1
5
Vin
Axx
GND
2
Np
3
4
Vout
TK707xxS
Vin
1
5
Vout
Bxx
GND
2
2. FEATURES
!
Output current: 100mA, Peak 200mA
!
Active high on/off control
!
Excellent Ripple rejection ratio: 80dB (f=1kHz)
70dB (f=10kHz)
!
Output capacitance: Cout
≥
0.47µF(Ceramic)
!
Output voltage accuracy:
±1.5%
or
±50mV
!
Short circuit protection (Over current protection)
!
Internal thermal shutdown (Over heat protection)
!
Reverse bias protection
Vcont
3
4
Np
·
SON2017-6
TK706xxH
Vcont 1
6
Vin
Axx
GND
2
5
GND
3. APPLICATIONS
!
Any Electronic Equipment
!
Battery Powered Systems
!
Mobile Communication
Np
3
4
Vout
*2pin,5pin are connected in the IC.
TK708xxH
Vin
1
6
Vout
Bxx
GND
2
5
GND
Vcont 3
4
Np
*2pin,5pin are connected in the IC.
GC3-K028A
Page 2
TK705xxS/TK707xxS,TK706xxH/TK708xxH
7. BLOCK DIAGRAM
Vin
Vout
Control
Circuit
Over Heat &
Over Current
Protection
320kΩ
500kΩ
Bandgap
Reference
Vcont
GND
Np
8. ABSOLUTE MAXIMUM RATINGS
Ta=25
°
C
Parameter
Absolute Maximum Ratings
Supply Voltage
Reverse Bias
Np pin Voltage
Control pin Voltage
Storage Temperature Range
Power Dissipation
Symbol
Vcc
MAX
Vrev
MAX
Vnp
MAX
Vcont
MAX
T
stg
P
D
Rating
-0.4 ~ 16
-0.4 ~ 6
-0.4 ~ 12
-0.4 ~ 5
-0.4 ~ 16
-55 ~ 150
460
*1
400
*2
Units
V
V
V
V
V
°C
mW
mW
Conditions
Vout
≤
2.0V
2.1V
≤
Vout
SOT23-5
SON2017-6
Operating Condition
Operating Temperature Range
T
OP
-40 ~ 85
°
C
Operating Voltage Range
V
OP
2.1 ~ 14
V
Short Circuit Current
Ishort
200
mA
Over Current Protection
*1 :
Internal Limited Tj=140°C. P
D
must be decreased at rate of 4.0 mW/°C for operation above 25°C.
*2 :
Internal Limited Tj=140°C. P
D
must be decreased at rate of 3.5 mW/°C for operation above 25°C.
The maximum ratings are the absolute limitation values with the possibility of the IC breakage.
When the operation exceeds this standard, quality cannot be guaranteed.
GC3-K028A
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