S-1112/1122 Series
www.ablicinc.com
HIGH RIPPLE-REJECTION AND LOW DROPOUT
CMOS VOLTAGE REGULATOR
© ABLIC Inc., 2002-2015 Rev.6.1_02
1
The S-1112/1122 Series is a positive voltage regulator with a low dropout voltage, high-accuracy output
voltage, and low current consumption developed based on CMOS technology.
A built-in low on-resistance transistor provides a low dropout voltage and large output current, and a built-in
overcurrent protection circuit prevents the load current from exceeding the current capacity of the output
transistor. An ON/OFF circuit ensures a long battery life. Compared with the voltage regulators using the
conventional CMOS technology, a larger variety of capacitors are available, including small ceramic capacitors.
Small SNT-6A(H) (S-1112 Series only) and SOT-23-5 packages realize high-density mounting. In SOT-23-5,
the lineup includes the S-1112 and S-1122 Series, which differ in pin configuration.
Features
Output voltage: 1.5 V to 5.5 V, selectable in 0.1 V step
Output voltage accuracy: 1.0%
Dropout voltage: 190 mV typ. (3.0 V output product, IOUT = 100 mA)
Current consumption: During operation: 50 A typ., 90 A max.
During power-off: 0.1 A typ., 1.0 A max.
Output current: Possible to output 150 mA (VIN VOUT
(
S
)
1.0 V)*1
Output capacitor: A ceramic capacitor of 0.47 F or more can be used.
Ripple rejection: 80 dB typ. (f = 1.0 kHz)
Built-in overcurrent protection circuit: Limits overcurrent of output transistor.
Built-in ON/OFF circuit: Ensures long battery life.
Operation temperature range: Ta = 40°C to 85°C
Lead-free, Sn 100%, halogen-free*2
*1. Attention should be paid to the power dissipation of the package when the output current is large.
*2. Refer to “ Product Name Structure” for details.
Applications
Constant-voltage power supply for battery-powered device
Constant-voltage power supply for personal communication device
Constant-voltage power supply for home electric appliance
Constant-voltage power supply for cellular phone
Packages
SNT-6A(H)
SOT-23-5
www.ablic.com
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
2
Block Diagram
Reference
voltage circuit
ON/OFF
*1. Parasitic diode
*1
ON/OFF
circuit
VIN
VSS
VOUT
Overcurrent
protection circuit
Figure 1
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_02 S-1112/1122 Series
3
Product Name Structure
Users can select the product type, output voltage, and package type for the S-1112/1122 Series. Refer to
“1. Product name” regarding the contents of product name, “2. Packages” regarding the package
drawings, “3. Product name lists” regarding details of product name.
1. Product name
(1) SNT-6A(H) for S-1112 Series
S-1112 x xx PI - xxx TF U
Output voltage
15 to 55
(E.g., when the output voltage is 1.5 V,
it is ex
p
ressed as 15.
)
IC direction in tape specifications*1
Package name (abbreviation)
PI : SNT-6A(H)
Environmental code
U: Lead-free (Sn 100%), halogen-free
Product name (abbreviation)*2
Product type*3
A: ON/OFF pin negative logic
B: ON/OFF
p
in
p
ositive lo
g
ic
(2) SOT-23-5 for S-1112 Series
S-1112 x xx MC - xxx TF x
Output voltage
15 to 55
(E.g., when the output voltage is 1.5 V,
it is ex
p
ressed as 15.
)
Package name (abbreviation)
MC: SOT-23-5
Product name (abbreviation)*2
Product type*3
A: ON/OFF pin negative logic
B: ON/OFF
p
in
p
ositive lo
g
ic
Environmental code
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
IC direction in tape specifications*1
*1. Refer to the tape drawing.
*2. Refer to the product name lists.
*3. Refer to “3. ON/OFF pin” in “ Operation”.
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
4
(3) S-1122 Series
S-1122 x xx MC - xxx TF x
Output voltage
15 to 55
(E.g., when the output voltage is 1.5 V,
it is ex
p
ressed as 15.
)
Package name (abbreviation)
MC: SOT-23-5
Environmental code
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
Product type*3
A: ON/OFF pin negative logic
B: ON/OFF pin positive logic
IC direction in ta
p
e s
p
ecifications*1
Product name (abbreviation)*2
*1. Refer to the tape drawing.
*2. Refer to the product name lists.
*3. Refer to “3. ON/OFF pin” in “ Operation”.
2. Packages
Package name Drawing code
Package Tape Reel Land
SNT-6A(H) PI006-A-P-SD PI006-A-C-SD PI006-A-R-SD PI006-A-L-SD
SOT-23-5 MP005-A-P-SD MP005-A-C-SD MP005-A-R-SD
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_02 S-1112/1122 Series
5
3. Product name lists
(1) S-1112 Series
Table 1
Output Voltage SNT-6A(H) SOT-23-5
1.5 V ±1.0% S-1112B15PI-L6ATFU S-1112B15MC-L6ATFx
1.6 V ±1.0% S-1112B16PI-L6BTFU S-1112B16MC-L6BTFx
1.7 V ±1.0% S-1112B17PI-L6CTFU S-1112B17MC-L6CTFx
1.8 V ±1.0% S-1112B18PI-L6DTFU S-1112B18MC-L6DTFx
1.9 V ±1.0% S-1112B19PI-L6ETFU S-1112B19MC-L6ETFx
2.0 V ±1.0% S-1112B20PI-L6FTFU S-1112B20MC-L6FTFx
2.1 V ±1.0% S-1112B21PI-L6GTFU S-1112B21MC-L6GTFx
2.2 V ±1.0% S-1112B22PI-L6HTFU S-1112B22MC-L6HTFx
2.3 V ±1.0% S-1112B23PI-L6ITFU S-1112B23MC-L6ITFx
2.4 V ±1.0% S-1112B24PI-L6JTFU S-1112B24MC-L6JTFx
2.5 V ±1.0% S-1112B25PI-L6KTFU S-1112B25MC-L6KTFx
2.6 V ±1.0% S-1112B26PI-L6LTFU S-1112B26MC-L6LTFx
2.7 V ±1.0% S-1112B27PI-L6MTFU S-1112B27MC-L6MTFx
2.8 V ±1.0% S-1112B28PI-L6NTFU S-1112B28MC-L6NTFx
2.85 V ±1.0% S-1112B2JPI-L7PTFU S-1112B2JMC-L7PTFx
2.9 V ±1.0% S-1112B29PI-L6OTFU S-1112B29MC-L6OTFx
3.0 V ±1.0% S-1112B30PI-L6PTFU S-1112B30MC-L6PTFx
3.1 V ±1.0% S-1112B31PI-L6QTFU S-1112B31MC-L6QTFx
3.2 V ±1.0% S-1112B32PI-L6RTFU S-1112B32MC-L6RTFx
3.3 V ±1.0% S-1112B33PI-L6STFU S-1112B33MC-L6STFx
3.4 V ±1.0% S-1112B34PI-L6TTFU S-1112B34MC-L6TTFx
3.5 V ±1.0% S-1112B35PI-L6UTFU S-1112B35MC-L6UTFx
3.6 V ±1.0% S-1112B36PI-L6VTFU S-1112B36MC-L6VTFx
3.7 V ±1.0% S-1112B37PI-L6WTFU S-1112B37MC-L6WTFx
3.8 V ±1.0% S-1112B38PI-L6XTFU S-1112B38MC-L6XTFx
3.9 V ±1.0% S-1112B39PI-L6YTFU S-1112B39MC-L6YTFx
4.0 V ±1.0% S-1112B40PI-L6ZTFU S-1112B40MC-L6ZTFx
4.1 V ±1.0% S-1112B41PI-L7ATFU S-1112B41MC-L7ATFx
4.2 V ±1.0% S-1112B42PI-L7BTFU S-1112B42MC-L7BTFx
4.3 V ±1.0% S-1112B43PI-L7CTFU S-1112B43MC-L7CTFx
4.4 V ±1.0% S-1112B44PI-L7DTFU S-1112B44MC-L7DTFx
4.5 V ±1.0% S-1112B45PI-L7ETFU S-1112B45MC-L7ETFx
4.6 V ±1.0% S-1112B46PI-L7FTFU S-1112B46MC-L7FTFx
4.7 V ±1.0% S-1112B47PI-L7GTFU S-1112B47MC-L7GTFx
4.8 V ±1.0% S-1112B48PI-L7HTFU S-1112B48MC-L7HTFx
4.9 V ±1.0% S-1112B49PI-L7ITFU S-1112B49MC-L7ITFx
5.0 V ±1.0% S-1112B50PI-L7JTFU S-1112B50MC-L7JTFx
5.1 V ±1.0% S-1112B51PI-L7KTFU S-1112B51MC-L7KTFx
5.2 V ±1.0% S-1112B52PI-L7LTFU S-1112B52MC-L7LTFx
5.3 V ±1.0% S-1112B53PI-L7MTFU S-1112B53MC-L7MTFx
5.4 V ±1.0% S-1112B54PI-L7NTFU S-1112B54MC-L7NTFx
5.5 V ±1.0% S-1112B55PI-L7OTFU S-1112B55MC-L7OTFx
Remark 1. Please contact our sales office for type A products.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
6
(2) S-1122 Series
Table 2
Output Voltage SOT-23-5
1.5 V ±1.0% S-1122B15MC-L8ATFx
1.6 V ±1.0% S-1122B16MC-L8BTFx
1.7 V ±1.0% S-1122B17MC-L8CTFx
1.8 V ±1.0% S-1122B18MC-L8DTFx
1.9 V ±1.0% S-1122B19MC-L8ETFx
2.0 V ±1.0% S-1122B20MC-L8FTFx
2.1 V ±1.0% S-1122B21MC-L8GTFx
2.2 V ±1.0% S-1122B22MC-L8HTFx
2.3 V ±1.0% S-1122B23MC-L8ITFx
2.4 V ±1.0% S-1122B24MC-L8JTFx
2.5 V ±1.0% S-1122B25MC-L8KTFx
2.6 V ±1.0% S-1122B26MC-L8LTFx
2.7 V ±1.0% S-1122B27MC-L8MTFx
2.8 V ±1.0% S-1122B28MC-L8NTFx
2.9 V ±1.0% S-1122B29MC-L8OTFx
3.0 V ±1.0% S-1122B30MC-L8PTFx
3.1 V ±1.0% S-1122B31MC-L8QTFx
3.2 V ±1.0% S-1122B32MC-L8RTFx
3.3 V ±1.0% S-1122B33MC-L8STFx
3.4 V ±1.0% S-1122B34MC-L8TTFx
3.5 V ±1.0% S-1122B35MC-L8UTFx
3.6 V ±1.0% S-1122B36MC-L8VTFx
3.7 V ±1.0% S-1122B37MC-L8WTFx
3.8 V ±1.0% S-1122B38MC-L8XTFx
3.9 V ±1.0% S-1122B39MC-L8YTFx
4.0 V ±1.0% S-1122B40MC-L8ZTFx
4.1 V ±1.0% S-1122B41MC-L9ATFx
4.2 V ±1.0% S-1122B42MC-L9BTFx
4.3 V ±1.0% S-1122B43MC-L9CTFx
4.4 V ±1.0% S-1122B44MC-L9DTFx
4.5 V ±1.0% S-1122B45MC-L9ETFx
4.6 V ±1.0% S-1122B46MC-L9FTFx
4.7 V ±1.0% S-1122B47MC-L9GTFx
4.8 V ±1.0% S-1122B48MC-L9HTFx
4.9 V ±1.0% S-1122B49MC-L9ITFx
5.0 V ±1.0% S-1122B50MC-L9JTFx
5.1 V ±1.0% S-1122B51MC-L9KTFx
5.2 V ±1.0% S-1122B52MC-L9LTFx
5.3 V ±1.0% S-1122B53MC-L9MTFx
5.4 V ±1.0% S-1122B54MC-L9NTFx
5.5 V ±1.0% S-1122B55MC-L9OTFx
Remark 1. Please contact our sales office for type A products.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_02 S-1112/1122 Series
7
Pin Configurations
SNT-6A(H)
Top view
1
2
3 4
6
5
Table 3
(S-1112 Series)
Pin No. Symbol Description
1 NC
*1 No connection
2 VSS GND pin
3 ON/OFF ON/OFF pin
4 VIN Input voltage pin
5 VSS GND pin
6 VOUT Output voltage pin
Figure 2 *1. The NC pin is electrically open.
The NC pin can be connected to VIN pin or VSS pin.
5 4
1 3 2
SOT-23-5
Top view
Table 4
(S-1112 Series)
Pin No. Symbol Description
1 VIN Input voltage pin
2 VSS GND pin
3 ON/OFF ON/OFF pin
4 NC*1 No connection
5 VOUT Output voltage pin
*1. The NC pin is electrically open.
The NC pin can be connected to VIN pin or VSS pin.
Table 5
(S-1122 Series)
Pin No. Symbol Description
Figure 3 1 VOUT Output voltage pin
2 VSS GND pin
3 VIN Input voltage pin
4 ON/OFF ON/OFF pin
5 NC*1 No connection
*1. The NC pin is electrically open.
The NC pin can be connected to VIN pin or VSS pin.
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
8
Absolute Maximum Ratings
Table 6
(Ta
=
25C unless otherwise specified)
Item Symbol Absolute Maximum Rating Unit
Input voltage VIN VSS 0.3 to VSS 7 V
VON/OFF VSS 0.3 to VIN 0.3 V
Output voltage VOUT VSS 0.3 to VIN 0.3 V
Power dissipation
SNT-6A(H)
PD
500*1 mW
SOT-23-5 300 (When not mounted on board) mW
600*1 mW
Operation ambient temperature To
pr
40 to 85 C
Storage temperature Tst
g
40 to 125 C
*1. When mounted on board
[Mounted board]
(1) Board size : 114.3 mm 76.2 mm t1.6 mm
(2) Board name : JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
050 100 150
700
500
0
Power dissi
p
ation
(
PD
)
[
mW
]
A
mbient tem
p
erature
(
Ta
)
[
C
]
200
SOT-23-5
600
400
300
100
SNT-6A
(
H
)
Figure 4 Power Dissipation of The Package (When Mounted on Board)
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_02 S-1112/1122 Series
9
Electrical Characteristics
Table 7
(Ta
=
25C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit Test
Circuit
Output voltage*1 VOUT(E) V
IN = VOUT(S) 1.0 V, IOUT = 30 mA VOUT(S)
0.99
VOUT(S)
VOUT(S)
1.01 V 1
Output current*2 IOUT V
IN VOUT
(
S
)
1.0 V 150*5 mA 3
Dropout voltage*3 Vdrop I
OUT 100 mA
1.5 V VOUT
(
S
)
1.6 V 0.32 0.55 V 1
1.7 V VOUT
(
S
)
1.8 V 0.28 0.47 V 1
1.9 V VOUT
(
S
)
2.3 V 0.25 0.35 V 1
2.4 V VOUT
(
S
)
2.7 V 0.20 0.29 V 1
2.8 V VOUT
(
S
)
5.5 V 0.19 0.26 V 1
Line regulation OUTIN
OUT1
VV
V
VOUT(S) 0.5 V VIN 6.5 V,
IOUT = 30 mA 0.05 0.2 %/V 1
Load regulation VOUT2 VIN = VOUT(S) 1.0 V,
1.0 mA IOUT 80 mA 12 40 mV 1
Output voltage
temperature coefficient*4 OUT
OUT
VTa
V
VIN = VOUT(S) 1.0 V, IOUT = 10 mA,
40C Ta 85C 100 ppm/
C 1
Current consumption
during operation ISS1 VIN = VOUT(S) 1.0 V, ON/OFF pin = ON,
no load 50 90 A2
Current consumption
during power-off ISS2 VIN = VOUT(S) 1.0 V, ON/OFF pin = OFF,
no load 0.1 1.0 A2
Input voltage VIN 2.0 6.5 V
ON/OFF pin
input voltage “H” VSH V
IN = VOUT(S) 1.0 V, RL = 1.0 k 1.5 V 4
ON/OFF pin
input voltage “L” VSL V
IN = VOUT(S) 1.0 V, RL = 1.0 k 0.3 V 4
ON/OFF pin
input current “H” ISH V
IN = 6.5 V, VON/OFF = 6.5 V 0.1 0.1 A4
ON/OFF pin
input current “L” ISL V
IN = 6.5 V, VON/OFF = 0 V 0.1 0.1 A4
Ripple rejection RR
VIN = VOUT(S) 1.0 V, f = 1.0 kHz,
Vri
p
= 0.5 Vrms, IOUT = 30 mA 80 dB 5
Short-circuit current Ishort VIN = VOUT(S) 1.0 V, ON/OFF pin = ON,
VOUT = 0 V 200 mA 3
*1. VOUT(S): Set output voltage
VOUT(E): Actual output voltage
Output voltage when fixing IOUT(= 30 mA) and inputting VOUT
(
S
)
1.0 V
*2. The output current at which the output voltage becomes 95% of VOUT
(
E
)
after gradually increasing the output current.
*3. Vdrop = VIN1 (VOUT3 0.98)
V
OUT3 is the output voltage when VIN = VOUT(S) 1.0 V and IOUT = 100 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltage.
*4. A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
VOUT
Ta []
mV/°C *1 = VOUT(S) []
V*2 VOUT
Ta VOUT
[]
ppm/°C *3 1000
*1. Change in temperature of output voltage
*2. Set output voltage
*3. Output voltage temperature coefficient
*5. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the
power dissipation of the package when the output current is large.
This specification is guaranteed by design.
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
10
Test Circuits
1.
VSS
VOUT
ON/OFF
Set to ON
VIN
V
A
Figure 5
2.
VSS
VOUT
ON/OFF
Set to
VIN or GND
VIN
A
Figure 6
3.
Set to ON
VSS
VOUT
ON/OFF
VIN
V
A
Figure 7
4.
VSS
VOUT
ON/OFF
VIN
A V RL
Figure 8
5.
VSS
VOUT
ON/OFF
VIN
V
Set to ON
RL
Figure 9
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_02 S-1112/1122 Series
11
Standard Circuit
ON/OFF
VSS
VOUTVIN
CIN
*1
CL
*2
Input Out
p
ut
GND
Sin
g
le GND
*1. C
IN is a capacitor for stabilizing the input.
*2. A ceramic capacitor of 0.47 F or more can be used for CL.
Figure 10
Caution The above connection diagram and constant will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constant.
Condition of Application
Input capacitor (CIN): 1.0 F or more
Output capacitor (CL): 0.47 F or more
ESR of output capacitor: 10 or less
Caution Generally a series regulator may cause oscillation, depending on the selection of external
parts. Check that no oscillation occurs with the application using the above capacitor.
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
12
Explanation of Terms
1. Low dropout voltage regulator
This voltage regulator has the low dropout voltage due to its built-in low on-resistance transistor.
2. Low ESR
A capacitor whose ESR (Equivalent Series Resistance) is low. The S-1112/1122 Series enables use of a
low ESR capacitor, such as a ceramic capacitor, for the output-side capacitor (CL). A capacitor whose
ESR is 10 or less can be used.
3. Output voltage (VOUT)
The accuracy of the output voltage is ensured at 1.0% under the specified conditions of fixed input
voltage*1, fixed output current, and fixed temperature.
*1. Differs depending the product.
Caution If the above conditions change, the output voltage value may vary and exceed the
accuracy range of the output voltage. Refer to “ Electrical Characteristics” and “
Characteristics (Typical Data)” for details.
4. Line regulation
VOUT1
VINVOUT
Indicates the dependency of the output voltage on the input voltage. That is, the values show how
much the output voltage changes due to a change in the input voltage with the output current remaining
unchanged.
5. Load regulation (VOUT2)
Indicates the dependency of the output voltage on the output current. That is, the values show how
much the output voltage changes due to a change in the output current with the input voltage remaining
unchanged.
6. Dropout voltage (Vdrop)
Indicates the difference between input voltage (VIN1) and the output voltage when; decreasing input
voltage (VIN) gradually until the output voltage has dropped out to the value of 98% of output voltage
(VOUT3), which is at VIN = VOUT(S) 1.0 V.
Vdrop VIN1 (VOUT3 0.98)
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_02 S-1112/1122 Series
13
7. Output voltage temperature coefficient
VOUT
Ta VOUT
The shaded area in Figure 11 is the range where VOUT varies in the operation temperature range when the
output voltage temperature coefficient is 100 ppm/C.
V
OUT
(
E
)
*1
Example of S-1112/1122B28 typ. product
40
25
0.28 mV/C
V
OUT
[V]
*1. V
OUT(E)
is the value of the output voltage measured at Ta = 25C.
85 Ta [C]
0.28 mV/C
Figure 11
A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
VOUT
Ta []
mV/°C *1 = VOUT(S) []
V*2 VOUT
Ta VOUT
[]
ppm/°C *3 1000
*1. Change in temperature of output voltage
*2. Set output voltage
*3. Output voltage temperature coefficient
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
14
Operation
1. Basic operation
Figure 12 shows the block diagram of the S-1112/1122 Series.
The error amplifier compares the reference voltage (Vref) with feedback voltage (Vfb), which is the output
voltage resistance-divided by feedback resistors (Rs and Rf). It supplies the gate voltage necessary to
maintain the constant output voltage which is not influenced by the input voltage and temperature
change, to the output transistor.
*1
*1. Parasitic diode
VSS
Current
supply
Vfb
Vref
VIN
VOUT
Rf
Rs
Error
amplifier
Reference voltage
circuit
Figure 12
2. Output transistor
In the S-1112/1122 Series, a low on-resistance P-channel MOS FET is used as the output transistor.
Be sure that VOUT does not exceed VIN 0.3 V to prevent the voltage regulator from being damaged due
to reverse current flowing from the VOUT pin through a parasitic diode to the VIN pin, when the potential
of VOUT became higher than VIN.
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_02 S-1112/1122 Series
15
3. ON/OFF pin
This pin starts and stops the regulator.
When the ON/OFF pin is set to OFF level, the entire internal circuit stops operating, and the built-in
P-channel MOS FET output transistor between the VIN pin and the VOUT pin is turned off, reducing
current consumption significantly. The VOUT pin becomes the VSS level due to the internally divided
resistance of several M between the VOUT pin and the VSS pin.
The structure of the ON/OFF pin is as shown in Figure 13. Since the ON/OFF pin is neither pulled down
nor pulled up internally, do not use it in the floating status. In addition, note that the current consumption
increases if a voltage of 0.3 V to VIN – 0.3 V is applied to the ON/OFF pin. When not using the ON/OFF
pin, connect it to the VSS pin in the product A type, and connect it to the VIN pin in B type.
Table 8
Product Type ON/OFF Pin Internal Circuit VOUT Pin Voltage Current Consumption
A “L”: ON Operate Set value ISS1
A “H”: OFF Stop VSS level ISS2
B “L”: OFF Stop VSS level ISS2
B “H”: ON Operate Set value ISS1
VSS
ON/OFF
VIN
Figure 13
Selection of Output Capacitor (CL)
The S-1112/1122 Series requires an output capacitor between the VOUT pin and the VSS pin for phase
compensation. A ceramic capacitor with a capacitance of 0.47 F or more can be used. When using an OS
capacitor, a tantalum capacitor, or an aluminum electrolytic capacitor, the capacitance must be 0.47 F or
more, and the ESR must be 10 or less.
The value of the output overshoot or undershoot transient response varies depending on the value of the
output capacitor.
When selecting the output capacitor, perform sufficient evaluation, including evaluation of temperature
characteristics, on the actual device.
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
16
Precautions
Wiring patterns for the VIN pin, the VOUT pin and GND should be designed so that the impedance is
low. When mounting an output capacitor between the VOUT pin and the VSS pin (CL) and a capacitor
for stabilizing the input between the VIN pin and the VSS pin (CIN), the distance from the capacitors to
these pins should be as short as possible.
Note that generally the output voltage may increase when a series regulator is used at low load current
(1.0 mA or less).
Generally a series regulator may cause oscillation, depending on the selection of external parts. The
following conditions are recommended for the S-1112/1122 Series. However, be sure to perform
sufficient evaluation under the actual usage conditions for selection, including evaluation of temperature
characteristics.
Input capacitor (CIN): 1.0 F or more
Output capacitor (CL): 0.47 F or more
Equivalent series resistance (ESR): 10 or less
The voltage regulator may oscillate when the impedance of the power supply is high and the input
capacitance is small or an input capacitor is not connected.
Overshoot may occur in the output voltage momentarily if the voltage is rapidly raised at power-on or
when the power supply fluctuates. Sufficiently evaluate the output voltage at power-on with the actual
device.
The application conditions for the input voltage, the output voltage, and the load current should not
exceed the package power dissipation.
Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in
electrostatic protection circuit.
In determining the output current, attention should be paid to the output current value specified in Table
7 in “ Electrical Characteristics” and footnote *5 of the table.
ABLIC Inc. claims no responsibility for any disputes arising out of or in connection with any infringement
by products including this IC of patents owned by a third party.
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_02 S-1112/1122 Series
17
Characteristics (Typical Data)
Remark The following, which describes the S-1112 Series as the typical product, shows typical data common
to the S-1122 Series.
(1) Output Voltage vs. Output current (when load current increases)
S-1112B15 (Ta = 25°C) S-1112B30 (Ta = 25°C)
VOUT [V]
0 100 200 300 400 500 600
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
VIN 1.8 V
2.5 V
6.5 V
VOUT [V]
200 300 400 500
1000600
VIN 3.3 V
4.0 V
6.5 V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
IOUT [mA] IOUT [mA]
S-1112B50 (Ta = 25°C)
VOUT [V]
200 300 400
1000
VIN 5.3 V
6.0 V
6.5 V
500
6
5
4
3
2
1
0
600
Remark In determining the output current, attention
should be paid to the following.
1) The minimum output current value and
footnote *5 of Table 7 in the “ Electrical
Characteristics”
2) The package power dissipation
IOUT [mA]
(2) Output voltage vs. Input voltage
S-1112B15 (Ta = 25°C) S-1112B30 (Ta = 25°C)
VOUT [V]
1.6
1.5
1.4
1.3
1.2
1.1
1.0
IOUT 1 mA
30 mA
50 mA
3.53.0
2.5 2.0 1.5 1.0
VOUT [V]
3.1
3.0
2.9
2.8
2.7
2.6
2.5
IOUT 1 mA
30 mA
50 mA
5.04.5
4.0
3.53.02.5
VIN [V] VIN [V]
S-1112B50 (Ta = 25°C)
VOUT [V]
IOUT 1 mA
30 mA
50 mA
5.5
5.0
4.5
4.0
3.5
3.0
2.5 7.06.0
5.0 4.0 3.0 2.0
VIN [V]
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
18
(3) Dropout voltage vs. Output current
S-1112B15 S-1112B30
Vdrop [V]
–40°C
25°C
85°C
0 50 100 150 200
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
Vdrop [V]
–40°C
25°C
85°C
0
50 100
150
200
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
IOUT [mA]
IOUT [mA]
S-1112B50
Vdrop [V]
25°C
0
50
100
150
200
–40°C
85°C
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
IOUT [mA]
(4) Dropout voltage vs. Set output voltage
Vdrop [V]
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
7
1 2 3 4 5 6 0
100 mA
150 mA
50 mA
30 mA
10 mA
VOUT(S) [V]
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_02 S-1112/1122 Series
19
(5) Output voltage vs. Ambient temperature
S-1112B15 S-1112B30
VOUT [V]
1.60
1.55
1.50
1.45
1.40
25
–25 75 100
–50 0 50
VOUT [V]
0 25
–50 –25 50 75 100
3.20
3.15
3.10
3.05
3.00
2.95
2.90
2.85
2.80
Ta [C]
Ta [C]
S-1112B50
VOUT [V]
100
75
50
25
0
–25
–50
5.3
5.2
5.1
5.0
4.9
4.8
4.7
Ta [C]
(6) Current consumption vs. Input voltage
S-1112B15 S-1112B30
ISS1 [A]
120
100
80
60
40
20
0
8
6
4 2
0
85°C 25°C
–
40°C
ISS1 [A]
6
4
2
0
120
100
80
60
40
20
0
8
85°C
25°C
–
40°C
VIN [V]
VIN [V]
S-1112B50
ISS1 [A]
0 2 4 6 8
120
100
80
60
40
20
0
25°C
–
40°C
85°C
VIN [V]
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
20
(7) Ripple rejection
S-1112B15 (Ta = 25°C) S-1112B30 (Ta = 25°C)
VIN 2.5 V, COUT 0.47 F VIN 4.0 V, COUT 0.47 F
Ripple Rejection [dB]
100 1k 10k 100k
10
IOUT 1 mA
30 m
A
50 m
A
1M
100
80
60
40
20
0
Ripple Rejection [dB]
100 1k 10k 100k
10
IOUT 1 mA
30 m
A
50 m
A
1M
100
80
60
40
20
0
Frequency [Hz]
Frequency [Hz]
S-1112B50 (Ta = 25°C)
VIN 6.0 V, COUT 0.47 F
Ripple Rejection [dB]
100 1k 10k 100k
10
IOUT 1 mA
30 m
A
50 m
A
1M
100
80
60
40
20
0
Frequency [Hz]
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.6.1_02 S-1112/1122 Series
21
Reference Data
(1) Input transient response characteristics
S-1112B15 (Ta = 25°C) S-1112B30 (Ta = 25°C)
IOUT 30 mA, tr tf 5.0 s, COUT 0.47 F, CIN 0 F IOUT 30 mA, tr tf 5.0 s, COUT 0.47 F, CIN 0 F
VOUT [V]
1.62
1.60
1.58
1.56
1.54
1.52
1.50
1.48
1.46
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
IN
V
OUT
-40
-20
0
20
40
60 80
100
120
140
160
VIN [V]
VOUT [V]
-40 -20 020 40 60
80
100
120
140
160
V
IN
V
OUT
3.08
3.06
3.04
3.02
3.00
2.98
2.96
6
5
4
3
2
1
0
VIN [V]
t [s] t [s]
S-1112B50 (Ta = 25°C)
IOUT 30 mA, tr tf = 5.0 s, COUT 0.47 F, CIN 0 F
VOUT [V]
5.12
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
8
7
6
5
4
3
2
1
0
V
IN
V
OUT
-40
-20
0
20
40
60 80
100
120
140
160
VIN [V]
t [s]
(2) Load transient response characteristics
S-1112B15 (Ta = 25°C) S-1112B30 (Ta = 25°C)
VIN 2.5 V, COUT 0.47 F, CIN 1.0 F, IOUT 50 mA 100 mA VIN 4.0 V, COUT 0.47 F, CIN 1.0 F, IOUT 50 mA 100 mA
VOUT [V]
0
20
40
60 80
100
120
140
-40
-20
160
I
OUT
V
OUT
1.70
1.65
1.60
1.55
1.50
1.45
1.40
150
100
50
0
–50
–100
–150
IOUT [mA]
VOUT [V]
020 40 60
80
100
120
140
-40 -20 160
I
OUT
V
OUT
150
100
50
0
–50
–100
–150
3.20
3.15
3.10
3.05
3.00
2.95
2.90
IOUT [mA]
t [s] t [s]
S-1112B50 (Ta = 25°C)
VIN 6.0 V, COUT 0.47 F, CIN 1.0 F, IOUT 50 mA 100 mA
VOUT [V]
0
20
40
60 80
100
120
140
-40
-20
160
V
OUT
I
OUT
5.20
5.15
5.10
5.05
5.00
4.95
4.90
150
100
50
0
–50
–100
–150
IOUT [mA]
t [s]
HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1112/1122 Series Rev.6.1_02
22
(3) ON/OFF pin transient response characteristics
S-1112B15 (Ta = 25°C) S-1112B30 (Ta = 25°C)
VIN 2.5 V, COUT 0.47 F, CIN 1.0 F, IOUT 100 mA VIN 4.0 V, COUT 0.47 F, CIN 1.0 F, IOUT 100 mA
VOUT [V]
VON/OFF
VOUT
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
-0.4 -0.2 1.6
3
2
1
0
–1
–2
–3
5
4
3
2
1
0
–1
VON/OFF [V]
VOUT [V]
00.2 0.4 0.6 0.8 1.0 1.2 1.4
-0.4 -0.2 1.6
VON/OFF
VOUT
6
4
2
0
–2
–4
–6
10
8
6
4
2
0
–2
VON/OFF [V]
t [ms] t [ms]
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
SNT-6A(H)-A-PKG Dimensions
PI006-A-P-SD-2.1
0.2±0.05
0.48±0.02
0.08 +0.05
-0.02
0.5
1.57±0.03
No. PI006-A-P-SD-2.1
12
3
4
5
6
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
Feed direction
4.0±0.1
2.0±0.05
4.0±0.1
ø1.5 +0.1
-0
ø0.5
1.85±0.05 0.65±0.05
0.25±0.05
mm
PI006-A-C-SD-2.0
SNT-6A(H)-A-Carrier Tape
No. PI006-A-C-SD-2.0
+0.1
-0
1
2
4
3
56
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
QTY.
No. PI006-A-R-SD-1.0
PI006-A-R-SD-1.0
Enlarged drawing in the central part
mm
SNT-6A(H)-A-Reel
5,000
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
SNT-6A(H)-A
-Land Recommendation
PI006-A-L-SD-4.1
No. PI006-A-L-SD-4.1
0.3
0.2
0.52
1.36
0.52
1
2
Caution 1. Do not do silkscreen printing and solder printing under the mold resin of the package.
2. The thickness of the solder resist on the wire pattern under the package should be 0.03 mm
or less from the land pattern surface.
3. Match the mask aperture size and aperture position with the land pattern.
4. Refer to "SNT Package User's Guide" for details.
1. (0.25 mm min. / 0.30 mm typ.)
2. (1.30 mm ~ 1.40 mm)
1.
2. 0.03 mm
3.
4. SNT
1. Pay attention to the land pattern width (0.25 mm min. / 0.30 mm typ.).
2. Do not widen the land pattern to the center of the package (1.30 mm to 1.40 mm).
1.
2. (1.30 mm ~ 1.40 mm)
(0.25 mm min. / 0.30 mm typ.)
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
2.9±0.2
1.9±0.2
0.95±0.1
0.4±0.1
0.16 +0.1
-0.06
123
4
5
No. MP005-A-P-SD-1.3
MP005-A-P-SD-1.3
SOT235-A-PKG Dimensions
mm
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
ø1.5 +0.1
-0 2.0±0.05
ø1.0 +0.2
-0 4.0±0.1 1.4±0.2
0.25±0.1
3.2±0.2
123
45
No. MP005-A-C-SD-2.1
MP005-A-C-SD-2.1
SOT235-A-Carrier Tape
Feed direction
4.0±0.1(10 pitches:40.0±0.2)
mm
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
QTY. 3,000
No. MP005-A-R-SD-1.1
MP005-A-R-SD-1.1
SOT235-A-Reel
Enlarged drawing in the central part
mm
Disclaimers (Handling Precautions)
1. All the information described herein
(product data,
specifications,
figures,
tables,
programs,
algorithms and application
circuit examples,
etc.)
is current as of publishing date of this document and is subject to change without notice.
2. The circuit examples and the usages described herein are for reference only, and do not guarantee the success of
any specific mass-production design.
ABLIC Inc. is not responsible for damages caused by the reasons other than the products described herein
(hereinafter "the products") or infringement of third-party intellectual property right and any other right due to the use
of the information described herein.
3. ABLIC Inc. is not responsible for damages caused by the incorrect information described herein.
4. Be careful to use the products within their specified ranges. Pay special attention to the absolute maximum ratings,
operation voltage range and electrical characteristics, etc.
ABLIC Inc. is not responsible for damages caused by failures and / or accidents, etc. that occur due to the use of the
products outside their specified ranges.
5. When using the products, confirm their applications, and the laws and regulations of the region or country where they
are used and verify suitability, safety and other factors for the intended use.
6. When exporting the products, comply with the Foreign Exchange and Foreign Trade Act and all other export-related
laws, and follow the required procedures.
7. The products must not be used or provided (exported) for the purposes of the development of weapons of mass
destruction or military use. ABLIC Inc. is not responsible for any provision (export) to those whose purpose is to
develop, manufacture, use or store nuclear, biological or chemical weapons, missiles, or other military use.
8. The products are not designed to be used as part of any device or equipment that may affect the human body, human
life, or assets (such as medical equipment, disaster prevention systems, security systems, combustion control
systems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment, aviation equipment,
aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle use or other uses. Do
not apply the products to the above listed devices and equipments without prior written permission by ABLIC Inc.
Especially, the products cannot be used for life support devices, devices implanted in the human body and devices
that directly affect human life, etc.
Prior consultation with our sales office is required when considering the above uses.
ABLIC Inc. is not responsible for damages caused by unauthorized or unspecified use of our products.
9. Semiconductor products may fail or malfunction with some probability.
The user of the products should therefore take responsibility to give thorough consideration to safety design including
redundancy, fire spread prevention measures, and malfunction prevention to prevent accidents causing injury or
death, fires and social damage, etc. that may ensue from the products' failure or malfunction.
The entire system must be sufficiently evaluated and applied on customer's own responsibility.
10. The products are not designed to be radiation-proof. The necessary radiation measures should be taken in the
product design by the customer depending on the intended use.
11. The products do not affect human health under normal use. However, they contain chemical substances and heavy
metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips may be sharp. Be
careful when handling these with the bare hands to prevent injuries, etc.
12. When disposing of the products, comply with the laws and ordinances of the country or region where they are used.
13. The information described herein contains copyright information and know-how of ABLIC Inc.
The information described herein does not convey any license under any intellectual property rights or any other
rights belonging to ABLIC Inc. or a third party. Reproduction or copying of the information from this document or any
part of this document described herein for the purpose of disclosing it to a third-party without the express permission
of ABLIC Inc. is strictly prohibited.
14. For more details on the information described herein, contact our sales office.
2.2-2018.06
www.ablic.com
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S-1122B50PN-L8JTFG S-1112B50PN-L6JTFG S-1112B31PN-L6QTFG S-1112B25PN-L6KTFG S-1122B25PN-
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S-1112B17PI-L6CTFG S-1112B18PI-L6DTFG S-1112B19PI-L6ETFG S-1112B20PI-L6FTFG S-1112B21PI-L6GTFG
S-1112B22PI-L6HTFG S-1112B23PI-L6ITFG S-1112B24PI-L6JTFG S-1112B25PI-L6KTFG S-1112B26PI-L6LTFG
S-1112B27PI-L6MTFG S-1112B28PI-L6NTFG S-1112B29PI-L6OTFG S-1112B30PI-L6PTFG S-1112B31PI-L6QTFG
S-1112B32PI-L6RTFG S-1112B33PI-L6STFG S-1112B34PI-L6TTFG S-1112B35PI-L6UTFG S-1112B36PI-L6VTFG
S-1112B37PI-L6WTFG S-1112B38PI-L6XTFG S-1112B39PI-L6YTFG S-1112B40PI-L6ZTFG S-1112B41PI-L7ATFG
S-1112B42PI-L7BTFG S-1112B43PI-L7CTFG S-1112B44PI-L7DTFG S-1112B45PI-L7ETFG S-1112B46PI-L7FTFG
S-1112B47PI-L7GTFG S-1112B48PI-L7HTFG S-1112B49PI-L7ITFG S-1112B50PI-L7JTFG S-1112B51PI-L7KTFG
S-1112B52PI-L7LTFG S-1112B53PI-L7MTFG S-1112B54PI-L7NTFG S-1112B55PI-L7OTFG S-1122B27PN-L8MTFG
S-1122B33PN-L8STFG S-1112B27PN-L6MTFG S-1112B33PN-L6STFG S-1112B30PN-L6PTFG S-1122B30PN-
L8PTFG S-1122B29PN-L8OTFG S-1112B29PN-L6OTFG S-1112B15PN-L6ATFG S-1122B15PN-L8ATFG S-
1112B33MC-L6S-TF S-1112B25MC-L6K-TF S-1122B50MC-L8J-TF S-1112B15MC-L6A-TF S-1112B29MC-L6O-TF
S-1112B50MC-L6J-TF S-1112B30MC-L6P-TF S-1112B50MC-L7JTFU S-1122B50MC-L9JTFU S-1112B27PN-L6M-
TF S-1122B27PN-L8M-TF S-1112B50PN-L6J-TF S-1122B25PN-L8K-TF S-1112B25PN-L6K-TF
