S-1131 Series
www.ablic.com
www.ablicinc.com
HIGH RIPPLE-REJECTION AND LOW DROPOUT
MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
© ABLIC Inc., 2002-2014
The S-1131 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 capacitance of the output
transistor. An ON/OFF circuit ensures a long battery life, and small SOT-89-3, SOT-89-5 and 6-Pin HSON(A)
packages realize high-density mounting.
Features
Output voltage:
Output voltage accuracy:
Dropout voltage:
Current consumption:
Output current:
Ripple rejection:
Built-in overcurrent protection circuit:
Built-in ON/OFF circuit:
Operation temperature range:
Lead-free, Sn 100%, halogen-free*2
1.5 V to 5.5 V, selectable in 0.1 V step
1.0%
250 mV typ. (3.0 V output product, IOUT = 100 mA)
During operation: 35 A typ., 65 A max.
During power-off: 0.1 A typ., 1.0 A max.
Possible to output 300 mA (VIN VOUT(S) 1.0 V)*1
70 dB typ. (f = 1.0 kHz)
Limits overcurrent of output transistor.
Ensures long battery life.
Ta = 40°C to 85°C
*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 DVD and CD-ROM drive
Constant-voltage power supply for battery-powered device
Constant-voltage power supply for personal communication device
Constant-voltage power supply for note book PC
Packages
SOT-89-3
SOT-89-5
6-Pin HSON(A)
1
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
Block Diagrams
(1) Without ON/OFF circuit (Package: SOT-89-3)
*1
VIN
VOUT
Overcurrent
protection circuit
Reference
voltage circuit
VSS
*1. Parasitic diode
Figure 1
(2) With ON/OFF circuit (Package: SOT-89-5, 6-Pin HSON(A))
*1
VIN
VOUT
Overcurrent
protection circuit
ON/OFF
circuit
ON/OFF
Reference
voltage circuit
VSS
*1. Parasitic diode
Figure 2
2
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
Product Name Structure
Users can select the product type, output voltage, and package type for the S-1131 Series. Refer to “1.
Product name” regarding the contents of product name, “2. Packages” regarding the package
drawings, “3. Product name list” regarding details of the product name.
1. Product name
(1) SOT-89-3, SOT-89-5
S-1131
x
xx
xx
-
xxx
TF
x
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
Product name (abbreviation)*2
Package name (abbreviation)
UA: SOT-89-3
UC: SOT-89-5
Output voltage
15 to 55
(e.g., when the output voltage is 1.5 V, it is expressed
as 15.)
Product type*3
A: ON/OFF pin negative logic
B: ON/OFF pin positive logic
*1. Refer to the tape drawing.
*2. Refer to the product name list.
*3. Refer to “3. ON/OFF pin” in “ Operation” (Expect SOT-89-3).
3
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
(2) 6-Pin HSON(A)
S-1131
x
xx
PD
-
xxx
TF
x
Environmental code
S: Lead-free, halogen-free
G: Lead-free (for details, please contact our sales office)
IC direction in tape specifications*1
Product name (abbreviation)*2
Package name (abbreviation)
PD: 6-Pin HSON(A)
Output voltage
15 to 55
(e.g., when the output voltage is 1.5 V, it is expressed
as 15.)
Product type*3
A: ON/OFF pin negative logic
B: ON/OFF pin positive logic
*1. Refer to the tape drawing.
*2. Refer to the product name list.
*3. Refer to “3. ON/OFF pin” in “ Operation”
2. Packages
Package Name
SOT-89-3
SOT-89-5
6-Pin HSON(A)
4
Package
UP003-A-P-SD
UP005-A-P-SD
PD006-A-P-SD
Drawing Code
Tape
UP003-A-C-SD
UP005-A-C-SD
PD006-A-C-SD
Reel
UP003-A-R-SD
UP005-A-R-SD
PD006-A-R-SD
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
3. Product name list
Table 1
Output voltage
SOT-89-3
SOT-89-5
6-Pin HSON(A)
1.5V±1.0%
S-1131B15UA-N4ATFx
S-1131B15UC-N4ATFx
S-1131B15PD-N4ATFz
1.6V±1.0%
S-1131B16UA-N4BTFx
S-1131B16UC-N4BTFx
S-1131B16PD-N4BTFz
1.7V±1.0%
S-1131B17UA-N4CTFx
S-1131B17UC-N4CTFx
S-1131B17PD-N4CTFz
1.8V±1.0%
S-1131B18UA-N4DTFx
S-1131B18UC-N4DTFx
S-1131B18PD-N4DTFz
1.9V±1.0%
S-1131B19UA-N4ETFx
S-1131B19UC-N4ETFx
S-1131B19PD-N4ETFz
2.0V±1.0%
S-1131B20UA-N4FTFx
S-1131B20UC-N4FTFx
S-1131B20PD-N4FTFz
2.1V±1.0%
S-1131B21UA-N4GTFx
S-1131B21UC-N4GTFx
S-1131B21PD-N4GTFz
2.2V±1.0%
S-1131B22UA-N4HTFx
S-1131B22UC-N4HTFx
S-1131B22PD-N4HTFz
2.3V±1.0%
S-1131B23UA-N4ITFx
S-1131B23UC-N4ITFx
S-1131B23PD-N4ITFz
2.4V±1.0%
S-1131B24UA-N4JTFx
S-1131B24UC-N4JTFx
S-1131B24PD-N4JTFz
2.5V±1.0%
S-1131B25UA-N4KTFx
S-1131B25UC-N4KTFx
S-1131B25PD-N4KTFz
2.6V±1.0%
S-1131B26UA-N4LTFx
S-1131B26UC-N4LTFx
S-1131B26PD-N4LTFz
2.7V±1.0%
S-1131B27UA-N4MTFx
S-1131B27UC-N4MTFx
S-1131B27PD-N4MTFz
2.8V±1.0%
S-1131B28UA-N4NTFx
S-1131B28UC-N4NTFx
S-1131B28PD-N4NTFz
2.9V±1.0%
S-1131B29UA-N4OTFx
S-1131B29UC-N4OTFx
S-1131B29PD-N4OTFz
3.0V±1.0%
S-1131B30UA-N4PTFx
S-1131B30UC-N4PTFx
S-1131B30PD-N4PTFz
3.1V±1.0%
S-1131B31UA-N4QTFx
S-1131B31UC-N4QTFx
S-1131B31PD-N4QTFz
3.2V±1.0%
S-1131B32UA-N4RTFx
S-1131B32UC-N4RTFx
S-1131B32PD-N4RTFz
3.3V±1.0%
S-1131B33UA-N4STFx
S-1131B33UC-N4STFx
S-1131B33PD-N4STFz
3.4V±1.0%
S-1131B34UA-N4TTFx
S-1131B34UC-N4TTFx
S-1131B34PD-N4TTFz
3.5V±1.0%
S-1131B35UA-N4UTFx
S-1131B35UC-N4UTFx
S-1131B35PD-N4UTFz
3.6V±1.0%
S-1131B36UA-N4VTFx
S-1131B36UC-N4VTFx
S-1131B36PD-N4VTFz
3.7V±1.0%
S-1131B37UA-N4WTFx
S-1131B37UC-N4WTFx
S-1131B37PD-N4WTFz
3.8V±1.0%
S-1131B38UA-N4XTFx
S-1131B38UC-N4XTFx
S-1131B38PD-N4XTFz
3.9V±1.0%
S-1131B39UA-N4YTFx
S-1131B39UC-N4YTFx
S-1131B39PD-N4YTFz
4.0V±1.0%
S-1131B40UA-N4ZTFx
S-1131B40UC-N4ZTFx
S-1131B40PD-N4ZTFz
4.1V±1.0%
S-1131B41UA-N5ATFx
S-1131B41UC-N5ATFx
S-1131B41PD-N5ATFz
4.2V±1.0%
S-1131B42UA-N5BTFx
S-1131B42UC-N5BTFx
S-1131B42PD-N5BTFz
4.3V±1.0%
S-1131B43UA-N5CTFx
S-1131B43UC-N5CTFx
S-1131B43PD-N5CTFz
4.4V±1.0%
S-1131B44UA-N5DTFx
S-1131B44UC-N5DTFx
S-1131B44PD-N5DTFz
4.5V±1.0%
S-1131B45UA-N5ETFx
S-1131B45UC-N5ETFx
S-1131B45PD-N5ETFz
4.6V±1.0%
S-1131B46UA-N5FTFx
S-1131B46UC-N5FTFx
S-1131B46PD-N5FTFz
4.7V±1.0%
S-1131B47UA-N5GTFx
S-1131B47UC-N5GTFx
S-1131B47PD-N5GTFz
4.8V±1.0%
S-1131B48UA-N5HTFx
S-1131B48UC-N5HTFx
S-1131B48PD-N5HTFz
4.9V±1.0%
S-1131B49UA-N5ITFx
S-1131B49UC-N5ITFx
S-1131B49PD-N5ITFz
5.0V±1.0%
S-1131B50UA-N5JTFx
S-1131B50UC-N5JTFx
S-1131B50PD-N5JTFz
5.1V±1.0%
S-1131B51UA-N5KTFx
S-1131B51UC-N5KTFx
S-1131B51PD-N5KTFz
5.2V±1.0%
S-1131B52UA-N5LTFx
S-1131B52UC-N5LTFx
S-1131B52PD-N5LTFz
5.3V±1.0%
S-1131B53UA-N5MTFx
S-1131B53UC-N5MTFx
S-1131B53PD-N5MTFz
5.4V±1.0%
S-1131B54UA-N5NTFx
S-1131B54UC-N5NTFx
S-1131B54PD-N5NTFz
5.5V±1.0%
S-1131B55UA-N5OTFx
S-1131B55UC-N5OTFx
S-1131B55PD-N5OTFz
Remark 1. Please contact our sales office for type A products.
2. x: G or U
z: G or S
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
5
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
Pin Configurations
Table 2
SOT-89-3
Top view
1
2
Pin No.
1
2
3
Symbol
VOUT
VSS
VIN
Description
Output voltage pin
GND pin
Input voltage pin
3
Figure 3
Table 3
SOT-89-5
Top view
5
4
Pin No.
1
2
3
4
5
Symbol
VOUT
VSS
NC*1
ON/OFF
VIN
Description
Output voltage pin
GND pin
No connection
ON/OFF pin
Input voltage pin
*1. The NC pin is electrically open.
The NC pin can be connected to the VIN pin or the VSS pin.
1
2
Figure 4
6
3
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
Table 4
6-Pin HSON(A)
Top view
6
5
4
1
2
Pin No.
1
2
3
4
5
6
3
Bottom view
1
2
3
*1
Symbol
VOUT
VSS
NC*1
NC*1
ON/OFF
VIN
Description
Output voltage pin
GND pin
No connection
No connection
ON/OFF pin
Input voltage pin
*1. The NC pin is electrically open.
The NC pin can be connected to the VIN pin or the VSS pin.
*2
6
*1.
5
4
Connect the exposed thermal
die pad at shadowed area to
the board, and set electric
potential open or VSS.
However, do not use it as the
function of electrode.
*2.
Be careful of the contact with
other wires because the pinch
lead has the same electric
potential as VSS.
Figure 5
Absolute Maximum Ratings
Table 5
Item
Input voltage
Output voltage
SOT-89-3
SOT-89-5
6-Pin HSON(A)
Operation ambient temperature
Storage temperature
Power
dissipation
Symbol
VIN
VON/OFF
VOUT
PD
Topr
Tstg
(Ta = 25C unless otherwise specified)
Absolute Maximum Rating
Unit
V
VSS 0.3 to VSS 7
V
VSS 0.3 to VIN 0.3
V
VSS 0.3 to VIN 0.3
500
mW
500
mW
500
mW
40 to 85
C
40 to 125
C
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.
7
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
Electrical Characteristics
Table 6
(Ta = 25C unless otherwise specified)
Item
*1
Symbol
Conditions
VOUT(E)1
VIN = VOUT(S) 1.0 V, IOUT = 30 mA
VOUT(E)2
VIN = VOUT(S) 1.0 V, IOUT = 80 mA
IOUT
VIN VOUT(S) 1.0 V
Output voltage
*2
Output current
Dropout voltage*3
Vdrop
Line regulation
VOUT1
VIN VOUT
Load regulation
VOUT2
Output voltage
temperature coefficient*4
Current consumption
during operation
Input voltage
VOUT
Ta VOUT
Ripple rejection
Short-circuit current
Current consumption
during power-off
ON/OFF pin
input voltage “H”
ON/OFF pin
input voltage “L”
ON/OFF pin
input current “H”
ON/OFF pin
input current “L”
ISS1
VIN
RR
Ishort
ISS2
VOUT(S) = 1.5 V
VOUT(S) = 1.6 V
VOUT(S) = 1.7 V
VOUT(S) = 1.8 V
VOUT(S) = 1.9 V
IOUT = 100 mA
VOUT(S) = 2.0 V
VOUT(S) = 2.1 V
2.2 V VOUT(S) 2.5 V
2.6 V VOUT(S) 3.3 V
3.4 V VOUT(S) 5.5 V
VOUT(S) 0.5 V VIN 6.5 V,
IOUT = 80 mA
VIN = VOUT(S) 1.0 V,
1.0 mA IOUT 80 mA
VIN = VOUT(S) 1.0 V, IOUT = 10 mA,
40C Ta 85C
VIN = VOUT(S) 1.0 V, ON/OFF pin = ON,
no load
VIN = VOUT(S) 1.0 V, f = 1.0 kHz,
Vrip = 0.5 Vrms, IOUT = 80 mA
VIN = VOUT(S) 1.0 V, ON/OFF pin = ON,
VOUT = 0 V
VIN = VOUT(S) 1.0 V, ON/OFF pin = OFF,
no load
Min.
VOUT(S)
0.99
VOUT(S)
0.98
300*5
Typ.
Max.
Unit
Test
Circuit
V
1
V
1
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.25
0.20
VOUT(S)
1.01
VOUT(S)
1.02
1.05
0.95
0.85
0.75
0.65
0.60
0.55
0.49
0.34
0.28
mA
V
V
V
V
V
V
V
V
V
V
3
1
1
1
1
1
1
1
1
1
1
0.05
0.2
%/V
1
20
40
mV
1
100
ppm
/C
1
35
65
A
2
2.0
6.5
V
70
dB
5
450
mA
3
0.1
1.0
A
2
VOUT(S)
VOUT(S)
VSH
VIN = VOUT(S) 1.0 V, RL = 1.0 k
1.5
V
4
VSL
VIN = VOUT(S) 1.0 V, RL = 1.0 k
0.3
V
4
ISH
VIN = 6.5 V, VON/OFF = 6.5 V
0.1
0.1
A
4
ISL
VIN = 6.5 V, VON/OFF = 0 V
0.1
0.1
A
4
*1. VOUT(S): Set output voltage
VOUT(E)1: Actual output voltage
Output voltage when fixing IOUT(= 30 mA) and inputting VOUT(S) 1.0 V
VOUT(E)2: Actual output voltage
Output voltage when fixing IOUT(= 80 mA) and inputting VOUT(S) 1.0 V
*2. The output current at which the output voltage becomes 95% of VOUT(E)1 after gradually increasing the output current.
*3. Vdrop = VIN1 (VOUT3 0.98)
VOUT3 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
VOUT
[mV/°C]*1 = VOUT(S) [V]*2 Ta V
[ppm/°C]*3 1000
Ta
OUT
*1. Change in temperature of the 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.
8
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
Test Circuits
1.
VIN
VOUT
A
ON/OFF*1
V
VSS
Set to ON
Figure 6
2.
A
VIN
VOUT
*1
ON/OFF
VSS
Set to
VIN or GND
Figure 7
3.
VIN
VOUT
A
*1
ON/OFF
V
VSS
Set to ON
Figure 8
4.
VIN
A
VOUT
ON/OFF*1
VSS
V
RL
Figure 9
5.
VIN
VOUT
*1
ON/OFF
VSS
V
RL
Set to ON
Figure 10
*1. In case of product with ON/OFF circuit.
9
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
Standard Circuit
Output
Input
VIN
CIN*1
VOUT
ON/OFF*2
VSS
Single GND
CL*3
GND
*1. CIN is a capacitor for stabilizing the input.
*2. In case of product with ON/OFF circuit.
*3. A tantalum capacitor (2.2 F or more) can be used.
Figure 11
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):
Output capacitor (CL):
1.0 F or more
2.2 F or more (tantalum capacitor)
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.
10
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
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. 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.
VOUT1
VINVOUT
3. Line regulation
Indicates the dependency of the output voltage on the input voltage. That is, the value shows how much
the output voltage changes due to a change in the input voltage with the output current remaining
unchanged.
4. Load regulation (VOUT2)
Indicates the dependency of the output voltage on the output current. That is, the value shows how
much the output voltage changes due to a change in the output current with the input voltage remaining
unchanged.
5. 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)
11
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
VOUT
Ta VOUT
6. Output voltage temperature coefficient
The shaded area in Figure 12 is the range where VOUT varies in the operation temperature range when
the output voltage temperature coefficient is 100 ppm/C.
Example of S-1131B28 typ. product
VOUT
[V]
0.28 mV/C
VOUT(E)1*1
0.28 mV/C
40
25
85
Ta [C]
*1. VOUT(E)1 is the value of the output voltage measured at Ta = 25C.
Figure 12
A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
VOUT
VOUT
[mV/°C]*1 = VOUT(S) [V]*2 Ta V
[ppm/°C]*3 1000
Ta
OUT
*1. Change in temperature of output voltage
*2. Set output voltage
*3. Output voltage temperature coefficient
12
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
Operation
1. Basic operation
Figure 13 shows the block diagram of the S-1131 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.
VIN
*1
Current
supply
Error
amplifier
Vref
VOUT
Rf
Vfb
Reference voltage
circuit
Rs
VSS
*1.
Parasitic diode
Figure 13
2. Output transistor
In the S-1131 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.
13
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
3. ON/OFF pin
In case of product with ON/OFF circuit, 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 hundreds k between the VOUT pin and the VSS pin.
The structure of the ON/OFF pin is as shown in Figure 14. Since the ON/OFF pin is neither pulled down
nor pulled up internally, do not use it in the floating states. 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.
Product Type
A
A
B
B
ON/OFF Pin
“L”: ON
“H”: OFF
“L”: OFF
“H”: ON
Table 7
Internal Circuit
VOUT Pin Voltage
Operate
Set value
Stop
VSS level
Stop
VSS level
Operate
Set value
Current Consumption
ISS1
ISS2
ISS2
ISS1
VIN
ON/OFF
VSS
Figure 14
Selection of Output Capacitor (CL)
The S-1131 Series performs phase compensation using the internal phase compensator in the IC and the
ESR (Equivalent Series Resistance) of the output capacitor to enable stable operation independent of
changes in the output load. Therefore, always place a capacitor (CL) of 2.2 F or more between the VOUT
pin and the VSS pin.
For stable operation of the S-1131 Series, it is essential to employ a capacitor whose ESR is within an
optimum range. Using a capacitor whose ESR is outside the optimum range (approximately 0.5 to 5 ),
whether larger or smaller, may cause an unstable output, resulting in oscillation. For this reason, a tantalum
electrolytic capacitor is recommended.
When a ceramic capacitor or an OS capacitor with a low ESR is used, it is necessary to connect an
additional resistor that serves as the ESR in series with the output capacitor. The required resistance value
is approximately 0.5 to 5 , which varies depending on the usage conditions, so perform sufficient
evaluation for selection. Ordinarily, around 1.0 is recommended.
Note that an aluminum electrolytic capacitor may increase the ESR at a low temperature, causing
oscillation. When using this kind of capacitor, perform thorough evaluation, including evaluation of
temperature characteristics.
14
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
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).
The S-1131 Series performs phase compensation by using an internal phase compensator and the ESR
of an output capacitor. Therefore, always place a capacitor of 2.2 F or more between the VOUT pin
and the VSS pin. A tantalum type capacitor is recommended. Moreover, to secure stable operation of
the S-1131 Series, it is necessary to employ a capacitor with an ESR within an optimum range (0.5 to
5 ). Using a capacitor whose ESR is outside the optimum range (approximately 0.5 to 5 ), whether
larger or smaller, may cause an unstable output, resulting in oscillation. Perform sufficient evaluation
under the actual usage conditions for selection, including evaluation of temperature characteristics.
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
6 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.
15
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
Characteristics (Typical Data)
(1) Output voltage vs. Output current (when load current increases)
S-1131B15 (Ta = 25°C)
S-1131B30 (Ta = 25°C)
2.5
2.0 V
6.5 V
1.5
VOUT [V]
VOUT [V]
2
1
VIN = 1.8 V
0.5
2.5 V
0
0
200
400
600
800
4
3.5
3
2.5
2
1.5
1
0.5
0
3.5 V
4.0 V
VIN = 3.3 V
6.5 V
0
200
400
IOUT [mA]
600
800
IOUT [mA]
S-1131B50 (Ta = 25°C)
6
6.5 V
5
VIN = 5.3 V
VOUT [V]
4
3
5.5 V
2
6.0 V
1
0
0
200
400
600
800
Remark In determining the output current, attention
should be paid to the following.
1) The minimum output current value and
footnote *5 of Table 6 in the “ Electrical
Characteristics”
2) The package power dissipation
IOUT [mA]
(2) Output voltage vs. Input voltage
S-1131B15 (Ta = 25°C)
1.6
S-1131B30 (Ta = 25°C)
3.05
50 mA
IOUT = 1 mA
30 mA
VOUT [V]
VOUT [V]
1.55
1.5
80 mA
1.45
1.5
2
2.5
3
3.5
VIN [V]
30 mA
80 mA
2.9
IOUT = 1 mA
30 mA
4.5
50 mA
80 mA
5
5.5
VIN [V]
2.5
3
3.5
VIN [V]
S-1131B50 (Ta = 25°C)
VOUT [V]
2.95
2.8
1
16
IOUT = 1 mA
2.85
1.4
5.1
5.08
5.06
5.04
5.02
5
4.98
4.96
4.94
4.92
4.9
50 mA
3
6
6.5
7
4
4.5
5
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
(3) Dropout voltage vs. Output current
S-1131B15
S-1131B30
1.0
1.0
85C
0.8
25C
0.6
0.4
Vdrop [V]
Vdrop [V]
0.8
–40C
0.2
0
85C
0.6
25C
0.4
0.2
0
50
100
150
200
250
300
350
IOUT [mA]
0
–40C
0
50
100
150
200
250
300
350
IOUT [mA]
S-1131B50
1.0
Vdrop [V]
0.8
0.6
85C
0.4
25C
0.2
0
–40C
0
50
100
150
200
250
300
350
IOUT [mA]
Vdrop [V]
(4) Dropout voltage vs. Set output voltage
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
150 mA
100 mA
50 mA
30 mA
10 mA
0
1
2
3
4
5
6
7
VOUT(S) [V]
17
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
S-1131B30
1.6
3.1
1.55
3.05
VOUT [V]
VOUT [V]
(5) Output voltage vs. Ambient temperature
S-1131B15
1.5
1.45
3
2.95
2.9
1.4
40 20
0
20
80
60
40
40
100
20
0
20
Ta [C]
40
60
80
100
Ta [C]
VOUT [V]
S-1131B50
5.1
5.08
5.06
5.04
5.02
5
4.98
4.96
4.94
4.92
4.9
40
0
20
20
40
60
100
80
Ta [C]
45
40
35
30
25
20
15
10
5
0
S-1131B30
25°C
40°C
ISS1 [A]
ISS1 [A]
(6) Current consumption vs. Input voltage
S-1131B15
85°C
0
2
4
6
8
VIN [V]
ISS1 [A]
18
85°C
40°C
0
2
4
VIN [V]
25°C
85°C
40°C
0
2
4
VIN [V]
S-1131B50
45
40
35
30
25
20
15
10
5
0
45
40
35
30
25
20
15
10
5
0
25°C
6
8
6
8
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
(7) Ripple rejection
S-1131B15 (Ta = 25°C)
S-1131B30 (Ta = 25°C)
VIN = 2.5 V, COUT = 2.2 F
VIN = 4.0 V, COUT = 2.2 F
100
80
IOUT = 1 mA
60
40
30 mA
20
80 mA
0
10
100
1k
10 k
100 k
1M
Frequency [Hz]
Ripple Rejection [dB]
Ripple Rejection [dB]
100
80
IOUT = 1 mA
60
40
30 mA
20
0
80 mA
10
100
1k
10 k
100 k
1M
Frequency [Hz]
S-1131B50 (Ta = 25°C)
VIN = 6.0 V, COUT = 2.2 F
Ripple Rejection [dB]
100
80
IOUT = 1 mA
60
40
30 mA
20
0
80 mA
10
100
1k
10 k
100 k
1M
Frequency [Hz]
19
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.1_02
S-1131 Series
Reference Data
(1) Input transient response characteristics
6
3.015
5
5
3.01
4
3.01
VIN
3.005
3
VOUT
3
2
2.995
2.99
-20
0
20
40
60
80
VOUT [V]
3.02
3.015
VIN [V]
VOUT [V]
IOUT = 80 mA, tr = tf = 5.0 s, COUT = 4.7 F, CIN = 0 F
6
3.02
4
V IN
3.005
3
V OUT
3
1
2.995
0
2.99
VIN [V]
IOUT = 80 mA, tr = tf = 5.0 s, COUT = 2.2 F, CIN = 0 F
2
1
0
-20
100 120 140 160 180
0
20
40
60
t [s]
80
100 120 140 160 180
t [s]
(2) Load transient response characteristics
VIN = 4.0 V, COUT = 4.7 F, CIN = 1.0 F,
IOUT = 50 mA100 mA
3.2
150
3.2
150
3.15
100
3.15
100
-50
3
VOUT
2.95
2.9
0
2
4
6
8
10
12
14
16
IOUT
3.05
-50
3
-100
2.95
-150
2.9
VOUT
0
2
4
6
8
10
S-1131B30 (Ta = 25°C)
VIN = 2.5 V, COUT = 2.2 F, CIN = 1.0 F
VIN = 4.0 V, COUT = 2.2 F, CIN = 1.0 F
VOUT [V]
1.5
VOUT
1
2
4
4
1
3
0
40
50
60
70
80
0
-4
-3
-1
90
S-1131B50 (Ta = 25°C)
VIN = 6.0 V, COUT = 2.2 F, CIN = 1.0 F
8
4
V OUT
4
2
3
0
2
-2
1
-4
-6
0
-1 -10
0
10
20
30
40
t [s]
20
50
60
70
80
90 -8
VON/OFF [V]
VOUT [V]
6
V ON/OFF
5
-6
-10
0
10
20
30
40
t [s]
7
0
-2
t [s]
6
VOUT
VON/OFF
-2
0
-0.5
2
2
1
-1
30
18
6
0.5
20
16
5
VOUT [V]
VON/OFF
10
14
3
VON/OFF [V]
2.5
0
12
t [s]
(3) ON/OFF pin transient response characteristics
S-1131B15 (Ta = 25°C)
-10
-100
-150
-2
18
t [s]
2
0
50
60
70
80
90
VON/OFF [V]
-2
VOUT [V]
0
IOUT [mA]
VOUT [V]
IOUT
50
3.1
50
3.1
3.05
IOUT [mA]
VIN = 4.0 V, COUT = 2.2 F, CIN = 1.0 F,
IOUT = 50 mA100 mA
4.5±0.1
1.5±0.1
1.6±0.2
45°
1
2
3
1.5±0.1 1.5±0.1
0.4±0.05
0.4±0.1
0.4±0.1
0.45±0.1
No. UP003-A-P-SD-2.0
TITLE
SOT893-A-PKG Dimensions
No.
UP003-A-P-SD-2.0
ANGLE
UNIT
mm
ABLIC Inc.
4.0±0.1(10 pitches : 40.0±0.2)
+0.1
ø1.5 -0
2.0±0.05
ø1.5 +0.1
-0
0.3±0.05
8.0±0.1
2.0±0.1
4.75±0.1
Feed direction
No. UP003-A-C-SD-2.0
TITLE
SOT893-A-Carrier Tape
No.
UP003-A-C-SD-2.0
ANGLE
UNIT
mm
ABLIC Inc.
16.5max.
13.0±0.3
Enlarged drawing in the central part
(60°)
(60°)
No. UP003-A-R-SD-1.1
TITLE
SOT893-A-Reel
No.
UP003-A-R-SD-1.1
ANGLE
UNIT
QTY.
mm
ABLIC Inc.
1,000
4.5±0.1
1.5±0.1
1.6±0.2
5
4
0.3
45°
1
2
3
1.5±0.1 1.5±0.1
0.4±0.05
0.4±0.1
0.4±0.1
0.45±0.1
No. UP005-A-P-SD-2.0
TITLE
SOT895-A-PKG Dimensions
No.
UP005-A-P-SD-2.0
ANGLE
UNIT
mm
ABLIC Inc.
4.0±0.1(10 pitches : 40.0±0.2)
ø1.5 +0.1
-0
2.0±0.05
+0.1
ø1.5 -0
0.3±0.05
8.0±0.1
2.0±0.1
4.75±0.1
3 2 1
4
5
Feed direction
No. UP005-A-C-SD-2.0
TITLE
SOT895-A-Carrier Tape
UP005-A-C-SD-2.0
No.
ANGLE
UNIT
mm
ABLIC Inc.
16.5max.
13.0±0.3
Enlarged drawing in the central part
(60°)
(60°)
No. UP005-A-R-SD-1.1
TITLE
SOT895-A-Reel
No.
UP005-A-R-SD-1.1
ANGLE
UNIT
QTY.
mm
ABLIC Inc.
1,000
+0.1
0.80 -0.05
2.90±0.1
(1.5)
0.15±0.05
0.5typ.
+0.1
0.30 -0.05
0.95±0.05
The exposed thermal die pad has different
electric potential depending on the product.
Confirm specifications of each product.
Do not use it as the function of electrode.
No. PD006-A-P-SD-5.0
TITLE
HSON6A-A-PKG Dimensions
No.
PD006-A-P-SD-5.0
ANGLE
UNIT
mm
ABLIC Inc.
4.0±0.1
1.5±0.1
2.0±0.05
ø1.55±0.05
0.2±0.05
3.3±0.1
3
1
4
6
ø1.05±0.05
4.0±0.1
Feed direction
No. PD006-A-C-SD-2.0
TITLE
HSON6A-A-Carrier Tape
No.
PD006-A-C-SD-2.0
ANGLE
UNIT
mm
ABLIC Inc.
12.5max.
9.0±0.3
Enlarged drawing in the central part
ø13±0.2
(60°)
(60°)
No. PD006-A-R-SD-1.0
TITLE
HSON6A-A-Reel
No.
PD006-A-R-SD-1.0
ANGLE
UNIT
QTY.
mm
ABLIC Inc.
3,000
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
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7.
The products must not be used or provided (exported) for the purposes of the development of weapons of mass
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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
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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
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careful when handling these with the bare hands to prevent injuries, etc.
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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.
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