APPLICATION MANUAL
LDO REGULATOR WITH ON/OFF SWITCH
TK717xxS
CONTENTS
1 . DESCRIPTION
2
2 . FEATURES
2
3 . APPLICATIONS
2
4 . PIN CONFIGURATION
2
5 . BLOCK DIAGRAM
2
6 . ORDERING INFORMATION
3
7 . ABSOLUTE MAXIMUM RATINGS (BOTH C
AND I RANK IN COMMON)
4
8 . ELECTRICAL CHARACTERISTICS
5
9 . TEST CIRCUIT
11
10 . TYPICAL CHARACTERISTICS
12
11 . APPLICATIONS INFORMATION
20
12 . PACKAGE OUTLINE
24
13 . NOTES
25
14 . OFFICES
25
GC3-H006F
Page 1
TK717xxS
LDO REGULATOR WITH ON/OFF SWITCH
TK717xxS
1. DESCRIPTION
The TK717xxS is an integrated circuit with a silicon
monolithic bipolar structure. The regulator is of the low
saturation voltage output type with very little quiescent
current (72mA). The PNP power transistor is built-in.
The I/O voltage difference is 163 mV (typical) when a
current of 200mA is supplied to the system. Because of
the low voltage drop, the voltage source can be
effectively used; this makes it very suitable for battery
powered equipment.
The on/off function is built into the IC. The current
during standby mode becomes very small (pA level).
In addition, the output short-circuit function works at off
times. It is a unique characteristic by which the residual
charge of the output side capacitor is rapidly discharged.
The output voltage is available from 1.5 to 10.0V in 0.1V
steps. The output voltage is trimmed with high accuracy.
This allows the optimum voltage to be selected for the
equipment.
The over current sensor circuit and the reverse-bias
protection circuit are built-in.
It is a very rugged design because the ESD protection is
high. Therefore, the TK717xxS can be used with
confidence. When mounted on the PCB, the power
dissipation rating becomes about 500mW, even though
the package is very small.
The TK717xxS features very high stability in both DC
and AC. The capacitor on the output side provides
stable operation with 0.22mF with 2.0V≤Vout. A
capacitor of any type can be used; however, the larger
this capacitor is, the better the overall characteristics are.
Vcont
GND
700kW
3. APPLICATIONS
Any Electronic Equipment
Battery Powered Systems
Mobile Communication
4. PIN CONFIGURATION
Vin
GND
Vcont
1
2
3
5
Vout
4
Np
Top View
5. BLOCK DIAGRAM
Vin
Control
Circuit
Constant
Current
Source
Over Heat &
Over Current
Protection
Vout
Bandgap
Reference
Auto
Discharge
Circuit
Np
2. FEATURES
Built-in shunt circuit of output to GND
High Precision output voltage(±50mV or ±1.5％)
Good ripple rejection ratio(80dB at 1kHz)
Built-in short circuit protection and thermal shutdown
Built-in on/off control (High On)
Built-in reverse bias over current protection
GC3-H006F
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TK717xxS
6. ORDERING INFORMATION
ORDERING INFORMATION
T K 717
Voltage Code
ex. 3.3V : 33
5.0V : 50
Tape / Reel Code
Package Code
S : SOT23-5
Rank Code
C : C Rank
I : I Rank
S
L
V OUT
1.5 v
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
V CODE
15
16
17
18
19
20
21
22
23
24
V OUT
2.5 v
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
V CODE
25
26
27
28
29
30
31
32
33
34
V OUT
3.5 v
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
V CODE
35
36
37
38
39
40
41
42
43
44
V OUT
4.5 v
4.6
4.7
4.8
4.9
5.0
V CODE
45
46
47
48
49
50
GC3-H006F
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TK717xxS
7. ABSOLUTE MAXIMUM RATINGS (BOTH C AND I RANK IN COMMON)
Ta=25
°
C
Parameter
Absolute Maximum Ratings
Supply Voltage
Reverse Bias
Np pin Voltage
Control pin Voltage
Storage Temperature Range
Power Dissipation
Operating Condition
Operating Temperature Range
Symbol
Vcc
MAX
Vrev
MAX
Vnp
MAX
Vcont
MAX
T
stg
P
D
T
OP
Rating
-0.4 ~ 16
-0.4 ~ 6
-0.4 ~ 12
-0.4 ~ 5
-0.4 ~ 16
-55 ~ 150
500 when mounted on a
PCB
Units
V
V
V
V
V
°C
mW
Internal Limited Tj=150°C
*
Conditions
Vout
£
2.0V
2.1V
£
Vout
-40 ~ 85
°
C
2.1 ~ 14
V
T
OP
=-40 ~ 85
°
C
Operating Voltage Range
V
OP
1.8 ~ 14
V
T
OP
=-30 ~ 80
°
C
Short Circuit Current
Ishort
410
mA
*
P
D
must be decreased at rate of 4.0mW/°C for operation above 25°C.
The maximum ratings are the absolute limitation values with the possibility of the IC being damaged.
If the operation exceeds any of these standards, quality cannot be guaranteed.
.
GC3-H006F
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TK717xxS
8. ELECTRICAL CHARACTERISTICS
8-1. Electrical Characteristics of the C rank
The operation between -40 ~ 85
°
C is guaranteed by design. The parameter with limit value will be guaranteed with
test when manufacturing or SQC (Statistical Quality Control) technique.
Vin=Vout
TYP
+1V, Vcont=1.8V, Ta=25°C
Parameter
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
*1
Symbol
Vout
LinReg
LoaReg
Vdrop
Value
MIN
TYP
MAX
Refer to TABLE 1
-
0.0
5.0
Refer to TABLE 1
Refer to TABLE 1
-
65
130
-
103
200
-
163
300
-
163
300
280
370
-
-
72
110
-
0.0
0.1
-
0.8
1.5
Refer to TABLE 1
-
1.8
-
1.6
-
0.86
-
-
-
-
2.5
-
0.35
-
0.6
Units
V
mV
mV
mV
mV
mV
mV
mV
mA
mA
mA
mA
mA
mA
V
V
V
V
Iout = 5mA
DVin
= 5V
Iout = 5mA ~ 100mA
Iout = 5mA ~ 200mA
Iout = 50mA
Iout = 100mA
Iout = 180mA
(2.1V
£
Vout
£
2.3V)
Iout = 200mA
(2.4V
£
Vout)
When Vout down 0.3V
Iout = 0mA
Vcont = 0V
Iout = 50mA
Vrev=Vout
TYP
Vcont = 1.8V
Vout ON state
Vout OFF state
Vout ON state
Vout OFF state
Conditions
Maximum Output Current
*2
Supply Current
Standby Current
Quiescent Current
Discharge Current
Control Terminal
Control Current
Control Voltage
Iout
MAX
Icc
Istandby
Iq
Idis
Icont
Vcont
T
OP
=-40~85
°
C
T
OP
=-30~80
°
C
*1:
For Vout
£
2.0V , no regulations.
*2:
The maximum output current is limited by power dissipation.
GC3-H006F
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