［TK637xxB/H/S½
TK637xxH/S
150mA, Capacitor-less, Low I
Q
, CMOS LDO Regulator IC
1-. DESCRIPTION
The TK637xxH/S is a CMOS LDO regulator. 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.
The IC can supply 150mA output current.
The IC does not require input capacitor, output capacitor,
and noise-bypass capacitor.
The IC offers low 10μA quiescent current and good
transient performance.
The output voltage is internally fixed from 1.35V to 4.2V.
4-. PIN CONFIGURATION
SON2017-6 (TK637xxH)
V
In
GND
1
2
3
(Top View)
6
5
4
V
Cont
GND
V
Out
NC
2-. FEATURES
Capacitor-less
(Without input capacitor, output capacitor, and noise-
bypass capacitor)
Package: SON2017-6 / SOT23-5
Low quiescent current
Good transient performance
Thermal and over current protection
On/Off control
High accuracy
SOT23-5 (TK637xxS)
V
In
GND
1
5
V
Out
2
V
Cont
3
4
(Top View)
NC
3-. APPLICATIONS
Mobile Communication
Battery Powered System
Any Electronic Equipment
5-. BLOCK DIAGRAM
V
In
V
Out
V
Ref
Thermal &
Over Current
Protection
GND
On/Off
Control
V
Cont
AP-MS0034-E-00
-1-
2011/02
［TK637xxB/H/S½
6-. ORDERING INFORMATION
T K 6 3 7
Voltage Code
(Refer to the following table)
Package Code
B : FC-4
H : SON2017-6 Package
S : SOT23-5 Package
Operating Temp. Range Code
C : C Rank(standard) only
C
Solder Composion Code
- G : Lead Free
- GH : PB Free & Halogen Free
brank : Lead Containing
Tape/Reel Code
B : Normal type for FC
L : Normal type for plastic packages
Output Voltage
Voltage Code
Output Voltage
Voltage Code
Output Voltage
Voltage Code
02
28
33
1.35V
2.8V
3.3V
1.5V
15
2.85V
01
3.5V
35
18
29
1.8V
2.9V
25
30
2.5V
3.0V
2.6V
26
3.1V
31
27
32
2.7V
3.2V
*If you need a voltage other than the value listed in the above table, please contact Asahi Kasei Microdevices.
AP-MS0034-E-00
-2-
2011/02
［TK637xxB/H/S½
7-. ABSOLUTE MAXIMUM RATINGS
T
a
=25C
Parameter
Absolute Maximum Ratings
Input Voltage
Output pin Voltage
Control pin Voltage
Storage Temperature Range
Symbol
V
In,MAX
V
Out,MAX
V
Cont,MAX
T
stg
Rating
-0.3 ~ 7.0
-0.3 ~ V
In
+0.3
-0.3 ~ 7.0
-55 ~ 150
Units
V
V
V
C
TK637xxH (SON2017-6)
TK637xxS (SOT23-5)
When mounted on a PCB
(7mm8mm0.8mm),
Internal Limited T
j
=150°C 2*
Conditions
Power Dissipation
P
D
500
mW
Operating Condition
Operational Temperature Range
T
OP
-40 ~ 85
C
Operational Voltage Range
V
OP
1.8 ~ 6.0
V
*2 P
D
must be decreased at the rate of 4mW for operation above 25C.
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.
AP-MS0034-E-00
-3-
2011/02
［TK637xxB/H/S½
8-. ELECTRICAL CHARACTERISTICS
The parameters with min. or max. values will be guaranteed at T
a
=T
j
=25C with test when manufacturing or SQC
(Statistical Quality Control) methods. The operation between -40 ~ 85
C is guaranteed by design.
V
In
=V
Out,TYP
+1V, V
Cont
=1.2V, T
a
=T
j
=25°C
Value
Parameter
Symbol
Units
Conditions
MIN
TYP
MAX
Output Voltage
V
Out
V
I
Out
=5mA
Refer to TABLE 1
Line Regulation
LinReg
-
0.0
4.0
mV
V
In
=1V
Load Regulation
LoaReg
mV
Refer to TABLE 2
Refer to TABLE 2
Dropout Voltage
*1
V
Drop
mV
Refer to TABLE 2
Refer to TABLE 2
Maximum Load Current
*2
I
Out,MAX
200
300
-
mA
V
Out
=V
Out,TYP
0.9
Quiescent Current
I
Q
-
10
20
µA
I
Out
=0mA, V
Cont
=V
In
Standby Current
I
Standby
-
0.01
0.1
µA
V
Cont
=0V
GND Pin Current
I
GND
-
25
50
µA
I
Out
=50mA, V
Cont
=V
In
Control Terminal
Control Current
I
Cont
-
0.3
0.6
µA
V
Cont
=1.2V
1.2
-
-
V
V
Out
On state
Control Voltage
V
Cont
-
-
0.2
V
V
Out
Off state
Reference Value
Output Voltage / Temp.
Output Noise Voltage
(TK63728)
Ripple Rejection
(TK63728)
Rise Time
(TK63728)
V
Out
/T
a
V
Noise
RR
t
r
-
-
-
-
100
45
65
300
-
-
-
-
ppm/°C
µVrms
I
Out
=5mA
C
Out
=1.0µF , I
Out
=30mA ,
BPF=400Hz~80kHz
C
Out
=1.0µF ,
I
Out
=10mA , f=1kHz
C
Out
=1.0µF ,
V
Cont
: Pulse Wave (100Hz) ,
V
Cont
On
V
Out
95%
point
dB
µs
*1:
For V
Out
1.8V, no regulations.
*2:
The maximum output current is limited by power dissipation.
The maximum load current is the current where the output voltage decreases to 90% by increasing the output current at
T
j
=25°C, compared to the output voltage specified at V
In
=V
Out,TYP
+1V. The maximum load current indicates the current
at which over current protection turns on.
For all output voltage products, the maximum output current for normal operation without operating any protection is
200mA. Accordingly, LoaReg and V
Drop
are specified on the condition that I
Out
is less than 200mA.
General Note
Parameters with only typical values are just reference. (Not guaranteed)
The noise level is dependent on the output voltage, the capacitance and capacitor characteristics.
AP-MS0034-E-00
-4-
2011/02
［TK637xxB/H/S½
TABLE 1.
Output Voltage
Part Number
MIN
V
TK63715H/S
TK63718H/S
TK63725H/S
TK63726H/S
TK63727H/S
TK63728H/S
TK63701H/S
TK63729H/S
TK63730H/S
TK63731H/S
TK63732H/S
TK63733H/S
TK63735H/S
1.485
1.782
2.475
2.574
2.673
2.772
2.821
2.871
2.970
3.069
3.168
3.267
3.465
TYP
V
1.500
1.800
2.500
2.600
2.700
2.800
2.850
2.900
3.000
3.100
3.200
3.300
3.500
MAX
V
1.515
1.818
2.525
2.626
2.727
2.828
2.879
2.929
3.030
3.131
3.232
3.333
3.535
Notice.
Please contact your authorized Asahi Kasei Microdevices representative for voltage availability
.
AP-MS0034-E-00
-5-
2011/02
