TOKO
TOKO
Inc.
IC Data Sheet
TK717xx
TK717xx
Features
・
Built-in shunt circuit of output to GND. Charged energy of output capacitor is
discharged quickly.
・
Built-in PNP power transistor. Very small Dropout Voltage
Vdrop=163mV Iout=
２
00mＡ）
（
Vdrop=163mV at Iout=２00m
Ａ）
(CL=0.22μ
2.0V≦Vout）
・
Very good stability (CL=0.22
μ
F is stable for any type capacitor with 2.0V
≦
Vout
）
voltage（±50mV or±1.5％）
（±50
・
High accuracy out put voltage
（±
50mV or
±
1.5
％）
ratio
（
80dB
at
1KHz
Iout=10mA）
・
Good ripple rejection ratio（80dB at 1KHz
Iout=10mA
）
1.8V∼14V）
・
Wide operating voltage range
（
1.8V
∼
14V
）
protection
・
Built-in short circuit protection
・
Built-in over temperature protection
protection
・
Suitable for low noise applications
on／
High／on）
・
Available with on
／
off control
（
High
／
on
）
. Off time input current becomes pA level
・
Very small package
Description
The TK717xx 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 (72μA).
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 TK717xx 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 TK717xx features very high stability in both DC and AC. The capacitor on the output side provides
stable operation with 0.22μF with 2.0V≦Vout. A capacitor of any type can be used; however, the
larger this capacitor is, the better the overall characteristics are.
GC3-H006D
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TOKO
TOKO
Inc.
Parameters
Supply voltage
Reverse bias
Np pin voltage
Control pin voltage
IC Data Sheet
Absolute maximum ratings
Symbol
Ｖcc
Max
VrMax
VnpMax
VcontMax
Limiting Values
−0.4∼１6
−0.4∼6
−0.4∼5
−0.4∼16
TK717xx
Unit
V
V
V
V
℃
Ｖ
℃
mA
500mW mounted (reference)
Storage temperature Range
Tstg
−55∼150
Operating voltage range
Vop
1.8∼14
Operating temperature range
Top
-30∼80
Short circuit current
Ishort
410
Power dissipation Internally limited（150mW free air）
Electronic characteristics
Parameters
Output voltage
Line regulation
Load regulation
Dropout voltage
Symbol
Vout
LinReg
LoaReg
Min
Ｔyp
Vtest=Vout
Typ
+1V Vcont=1.8V（Ta＝25℃）
Max Unit
Condition
5
½V
Vtest=Vout
Typ
+1V---- Vout
Typ
+6V
ΔV=5V
See
table 1
0
Maximum output
current
Quiescent current
Ground pin current
Standby current
Discharge current
(8)
(23)
(21)
(58)
Vdrop
65
130
103
200
163
300
163
300
1.5V≦Vout 2.0V
：
No regulation
1.5V Vout≦2.0V
Vout 2.0V
IoutMax
280
370
Iq
Ignd
Istandby
Idis
250
72
0.8
0.0
29
38
41
44
110
1.5
0.1
½V
5mA＜Iout＜100mA Note1
mV 5mA＜Iout＜200mA Note1
mV
Ｉout=50mA
mV
Ｉout=100mA
(2.4V≦Vout)
mV
Ｉout=200mA
(2.4V Vout)
(2.1V≦Vout
Vout＜
mV
Ｉout=180mA
(2.1V Vout
＜
2.4V)
Because of Vop
Min
=1.8V
½A
When
（
Vout
Typ
.×0.9）
1.8V≦Vcc≦2.1V
1.8V
≦
Vcc
≦
2.1V
Reference Value
μA Ｉout=0mA
Excluding Icont
½A
μA
½A
½A
½A
½A
Iout=50½A
Vcc=８V,
Vcont≦0.15V Off state
Ｖrev=2V
off state (71720 )
Ｖrev=3V
off state (71730 )
Ｖrev=4V
off state (71740 )
Ｖrev=5V
off state (71750 )
19
25
27
29
Control terminal Specification (Pull down resistor =None
（Note
2）
μA
Vcont＝1.8½ on state
Control current
Icont
0.86
2.5
Control voltage
Vcont
1.6
V
on state
0.6
V
off state
Np treminal Voltage
Vo
Out put noise
Note 1: This value depends on the output voltage (this is a value for a Vout=3V device.)
This value improves in a low voltage device.
Note 2: The input current decreases to the pA level by connecting the control terminal to GND.（Off
state）
General Note:
Limits are guaranteed by production testing or correction techniques using Statistical Quality Control
(SQC) methods. Unless otherwise noted. Vtest=Vout
Typ
+1v；IL=1mA（Tj=25
℃）The
operation of -30℃-80℃
is guaranteed in the design by a usual inspection.
VNp
Vo/Ta
Vno
1.26
V
Typ=25
ppm/℃ Reference Value
0.14∼0.25
μV/√Hz
at 1KHz Reference Value
General Note: Exceeding the “Absolute Maximum Rating “ may damage the device
General Note: Connecting a capacitor to the noise bypass pin can decrease the output noise voltage
General Note: Output noise is 0.14-0.25
μV/√Hz
at 1KHz : 25∼65μVrms at BW400-80kHz
General Note: The ripple rejection is 84dB at 400Hz and 80dB at 1kHz.
［CL=1.0μF,Cnp=0.01μF,Vnois=200mV
RMS
,Vin=Vout
Typ
+1.5v,Iout=10mA½
GC3-H006D
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嵌入式系统
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