S-1167 Series
www.sii-ic.com
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION
AND LOW DROPOUT CMOS VOLTAGE REGULATOR
© Seiko Instruments Inc., 2004-2010 Rev.3.0_00
Seiko Instruments Inc. 1
The S-1167 Series is a positive voltage regulator with ultra low current consumption, high ripple rejection, low drop voltage
and high output voltage accuracy developed based on CMOS technology.
Although current consumption is very small with 9 μA typ., S-1167 Series realized the 70 dB of high ripple rejection rate.
Besides a 1.0 μF ceramic capacitor is available as an input-and-output capacitor.
Moreover, dropout voltage is also small since output voltage accuracy realizes ±1.0% of high accuracy, and the low-on-
resistance transistor is built-in. A built-in Output current protector prevents the load current from exceeding the current
capacitance of the output transistor. A shutdown circuit ensures long battery life.
Two packages, SOT-23-5 and SNT-6A(H), are available.
Compared with the voltage regulators using the conventional CMOS process, S-1167 Series is the most suitable for the
portable equipments with ultra low current consumption and corresponding to the small package.
Features
• Output voltage : 1.5 to 5.5 V, selectable in 0.1 V steps.
• Low equivalent series resistance capacitor can be used : A ceramic capacitor of 1.0 μF or more can be used for the
output capacitor.
• Wide input voltage range : 2.0 to 6.5 V
• High-accuracy output voltage : ±1.0%
• Low dropout voltage : 150 mV typ. (3.0 V output product, at IOUT = 100 mA)
• Low current consumption : During operation : 9 μA typ., 16 μA max.
During shutdown : 0.1 μA typ., 0.9 μA max.
• High peak current capacity : 150 mA output is possible. (at VIN ≥ VOUT(S) + 1.0 V)*1
• High ripple rejection : 70 dB typ. (at 1.0 kHz, VOUT = 3.0 V)
• Built-in overcurrent protector : Overcurrent of output transistor can be restricted.
• Built-in shutdown circuit : Ensures long battery life.
• Lead-free, Sn 100%, halogen-free*2
*1. Attention should be paid to the power dissipation of the package when the out put current is large.
*2. Refer to “ Product Name Structure” for details.
Applications
• Power supply for battery-powered devices
• Power supply for cellular phones
• Power supply for portable equipments
Packages
• SOT-23-5
• SNT-6A(H)
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
2
Block Diagram
VIN
VSS
VOUT
ON / OFF
*1
Shutdown
circuit
Reference
voltage circuit
Over current
protector
+
−
*1. Parasitic diode
Figure 1
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 3
Product Name Structure
The product types, output voltage value and package types for the S-1167 Series can be selected at the user’s request.
Refer to the “1. Product Name” for the meanings of the characters in the product name, “2. Package” regarding the
package drawings and “3. Product Name List” for the full product names.
1. Product Name
S-1167 x xx - xxxx x
Environmental code
U : Lead-free (Sn 100%), halogen-free
G : Lead-free (for details, please contact our sales office)
Package name (abbreviation) and packing specifications *1
M5T1 : SOT-23-5, Tape
I6T2 : SNT-6A(H), Tape
Output voltage
15 to 55
(e.g. When output voltage is 1.5 V, it is expressed as 15.)
Product type *2
A : ON / OFF pin negative logic
B : ON / OFF pin positive logic
*1. Refer to the tape specifications.
*2. Refer to the “3. Shutdown (ON / OFF Pin)” in the “ Operation”.
2. Package
Drawing Code
Package Name Package Tape Reel Land
SOT-23-5 MP005-A-P-SD MP005-A-C-SD MP005-A-R-SD
−
SNT-6A(H) PI006-A-P-SD PI006-A-C-SD PI006-A-R-SD PI006-A-L-SD
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
4
3. Product Name List
3.1 S-1167 Series A typ e
Table 1
Output Voltage SOT-23-5
1.5 V±1.0% S-1167A15-M5T1x
1.85 V±1.0% S-1167A1J-M5T1x
1.9 V±1.0% S-1167A19-M5T1x
3.0 V±1.0% S-1167A30-M5T1x
3.3 V±1.0% S-1167A33-M5T1x
5.0 V±1.0% S-1167A50-M5T1x
Remark 1. Please contact our sales office for the products other than those above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 5
3.2 S-1167 Series B type
Table 2
Output Voltage SOT-23-5 SNT-6A(H)
1.5 V±1.0% S-1167B15-M5T1x S-1167B15-I6T2x
1.6 V±1.0% S-1167B16-M5T1x S-1167B16-I6T2x
1.7 V±1.0% S-1167B17-M5T1x S-1167B17-I6T2x
1.8 V±1.0% S-1167B18-M5T1x S-1167B18-I6T2x
1.9 V±1.0% S-1167B19-M5T1x S-1167B19-I6T2x
2.0 V±1.0% S-1167B20-M5T1x S-1167B20-I6T2x
2.1 V±1.0% S-1167B21-M5T1x S-1167B21-I6T2x
2.2 V±1.0% S-1167B22-M5T1x S-1167B22-I6T2x
2.3 V±1.0% S-1167B23-M5T1x S-1167B23-I6T2x
2.4 V±1.0% S-1167B24-M5T1x S-1167B24-I6T2x
2.5 V±1.0% S-1167B25-M5T1x S-1167B25-I6T2x
2.6 V±1.0% S-1167B26-M5T1x S-1167B26-I6T2x
2.7 V±1.0% S-1167B27-M5T1x S-1167B27-I6T2x
2.8 V±1.0% S-1167B28-M5T1x S-1167B28-I6T2x
2.9 V±1.0% S-1167B29-M5T1x S-1167B29-I6T2x
3.0 V±1.0% S-1167B30-M5T1x S-1167B30-I6T2x
3.1 V±1.0% S-1167B31-M5T1x S-1167B31-I6T2x
3.2 V±1.0% S-1167B32-M5T1x S-1167B32-I6T2x
3.3 V±1.0% S-1167B33-M5T1x S-1167B33-I6T2x
3.4 V±1.0% S-1167B34-M5T1x S-1167B34-I6T2x
3.5 V±1.0% S-1167B35-M5T1x S-1167B35-I6T2x
3.6 V±1.0% S-1167B36-M5T1x S-1167B36-I6T2x
3.7 V±1.0% S-1167B37-M5T1x S-1167B37-I6T2x
3.8 V±1.0% S-1167B38-M5T1x S-1167B38-I6T2x
3.9 V±1.0% S-1167B39-M5T1x S-1167B39-I6T2x
4.0 V±1.0% S-1167B40-M5T1x S-1167B40-I6T2x
4.1 V±1.0% S-1167B41-M5T1x S-1167B41-I6T2x
4.2 V±1.0% S-1167B42-M5T1x S-1167B42-I6T2x
4.3 V±1.0% S-1167B43-M5T1x S-1167B43-I6T2x
4.4 V±1.0% S-1167B44-M5T1x S-1167B44-I6T2x
4.5 V±1.0% S-1167B45-M5T1x S-1167B45-I6T2x
4.6 V±1.0% S-1167B46-M5T1x S-1167B46-I6T2x
4.7 V±1.0% S-1167B47-M5T1x S-1167B47-I6T2x
4.8 V±1.0% S-1167B48-M5T1x S-1167B48-I6T2x
4.9 V±1.0% S-1167B49-M5T1x S-1167B49-I6T2x
5.0 V±1.0% S-1167B50-M5T1x S-1167B50-I6T2x
5.1 V±1.0% S-1167B51-M5T1x S-1167B51-I6T2x
5.2 V±1.0% S-1167B52-M5T1x S-1167B52-I6T2x
5.3 V±1.0% S-1167B53-M5T1x S-1167B53-I6T2x
5.4 V±1.0% S-1167B54-M5T1x S-1167B54-I6T2x
5.5 V±1.0% S-1167B55-M5T1x S-1167B55-I6T2x
Remark 1. Please contact our sales office for the products other than those above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
6
Pin Configurations
Table 3
Pin No. Symbol Pin Description
1 VIN Input voltage pin
2 VSS GND pin
3 ON / OFF Shutdown pin
4
NC *1 No connection
5 VOUT Output voltage pin
SOT-23-5
Top view
5 4
3 2 1
Figure 2
*1. The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
Table 4
Pin No. Symbol Pin Description
1 VOUT Output voltage pin
2 VSS GND pin
3
NC *1 No connection
4 ON / OFF Shutdown pin
5 VSS GND pin
6 VIN Input voltage pin
SNT-6A(H)
Top view
1
2
3 4
6
5
Figure 3 *1. The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 7
Absolute Maximum Ratings
Table 5 (Ta = 25°C unless otherwise specified
)
Item Symbol Absolute Maximum Rating Unit
VIN V
SS − 0.3 to VSS + 7 V
Input voltage VON / OFF V
SS − 0.3 to VIN + 0.3 V
Output voltage VOUT V
SS − 0.3 to VIN + 0.3 V
300 (When not mounted on board) mW
SOT-23-5 600 *1 mW
Power dissipation SNT-6A(H) PD 500 *1 mW
Operating ambient temperature Topr −40 to +85 °C
Storage temperature Tstg −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.
0 50 100 150
600
400
0
Power dis sip ation ( P D) [mW]
Ambient temperature (Ta ) [°C]
SNT-6A(H)
200
SOT-23-5
Figure 4 Power Dissipation of The Package (When Mounted on Board)
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
8
Electrical Characteristics
Table 6 (Ta = 25°C unless otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit
Test
Circuit
Output voltage
*1
V
OUT(E)
V
IN
= V
OUT(S)
+
1.0 V, I
OUT
= 30mA V
OUT(S)
×
0.99 V
OUT(S)
V
OUT(S)
×
1.01 V 1
Output current
*2
I
OUT
V
IN
≥
V
OUT(S)
+
1.0 V 150
*5
−
−
mA 3
Dropout voltage
*3
V
drop
I
OUT
= 100 mA 1.5 V
≤
V
OUT(S)
≤
1.9 V 0.5 0.54 0.58 V 1
2.0 V
≤
V
OUT(S)
≤
2.4 V
−
0.23 0.35 V 1
2.5 V
≤
V
OUT(S)
≤
2.9 V
−
0.20 0.30 V 1
3.0 V
≤
V
OUT(S)
≤
3.2 V
−
0.15 0.23 V 1
3.3 V
≤
V
OUT(S)
≤
5.5 V
−
0.14 0.21 V 1
Line regulation
OUTIN
1OUT
VV V
•Δ
Δ
V
OUT(S)
+
0.5 V
≤
V
IN
≤
6.5 V, I
OUT
= 30 mA
−
0.05 0.2 % / V 1
Load regulation
Δ
V
OUT2
V
IN
= V
OUT(S)
+
1.0 V, 10
μ
A
≤
I
OUT
≤
100 mA
−
20 40 mV 1
Output voltage
temperature coefficient
*4
OUT
OUT
VTaV
•Δ
Δ
V
IN
= V
OUT(S)
+
1.0 V, I
OUT
= 30 mA,
−
40
≤
Ta
≤
85 °C
−
±
100
−
ppm /
°
C1
Current consumption
during operation I
SS1
V
IN
= V
OUT(S)
+
1.0 V, ON / OFF pin = ON,
No load
−
9 16
μ
A 2
Current consumption
during shutdown I
SS2
V
IN
=V
OUT(S)
+
1.0 V, ON / OFF pin = OFF,
No load
−
0.1 0.9
μ
A 2
Input voltage V
IN
−
2.0
−
6.5 V
−
ON / OFF pin
input voltage “H” V
SH
V
IN
= V
OUT(S)
+
1.0 V, R
L
= 1.0 k
Ω
1.5
−
−
V 4
ON / OFF pin
input voltage “L” V
SL
V
IN
= V
OUT(S)
+
1.0 V, R
L
= 1.0 k
Ω
−
−
0.3 V 4
ON / OFF pin
input current “H” I
SH
V
IN
= 6.5 V, V
ON / OFF
= 6.5 V
−
0.1
−
0.1
μ
A 4
ON / OFF pin
input current “L” I
SL
V
IN
= 6.5 V, V
ON / OFF
= 0 V
−
0.1
−
0.1
μ
A 4
1.5 V
≤
V
OUT(S)
≤
3.0 V
−
70
−
dB 5
Ripple rejection
RR
V
IN
= V
OUT(S)
+
1.0 V,
f = 1.0 kHz,
Δ
V
rip
= 0.5 Vrms,
I
OUT
= 30 mA 3.1 V
≤
V
OUT(S)
≤
5.5 V
−
65
−
dB 5
Short-circuit current I
SHORT
V
IN
= V
OUT(S)
+
1.0 V, ON / OFF pin = ON,
V
OUT
= 0 V
−
300
−
mA 3
*1. VOUT(S) : Specified output voltage
VOUT(E) : Actual output voltage at the fixed load
The 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)
VOUT3 is the output volt age 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. The change in temperature [mV / °C] is calculated using the following equation.
[] [] []
1000C/ppm
VΔTa
ΔV
VVC/mV
ΔTa
ΔV
OUT
OUT
OUT(S)
OUT ÷°
•
×=° *3*2*1
*1. The temperature change ratio of the output voltage
*2. Specified output voltage
*3. Output voltage temperature coef ficient
*5. The output current can be supplied at least to 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.
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 9
Test Circuits
1.
+
VOUT
VIN
VSS
ON / OFF
+
V
A
Set to power ON
Figure 5
2.
Set to V
IN
or GND
VOUT
VIN
VSS
ON / OFF
A
+
Figure 6
3.
VOUT
VIN
VSS
ON / OFF
+
V
+
A
Set to power ON
Figure 7
4.
VOUT
VIN
VSS
ON / OFF
+
V
+
A R
L
Figure 8
5.
VOUT
VIN
VSS
ON / OFF
+
V R
L
Set to power ON
Figure 9
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
10
Standard Circuit
C
IN*1
C
L*2
Input
Output
GND
Single GND
VOUT
VIN
VSS
ON / OFF
*1. A capacitor for stabilizing the input.
*2. A ceramic capacitor of 1.0 μF or more can be used.
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.
Application Conditions
Input capacitor (CIN) : 1.0 μF or more
Output capacitor (CL) : 1.0 μF or more
Equivalent series resistance (RESR) of output capacitor : 1.0 Ω or less
Caution A general series regulator may oscillate, depending on the external components selected. Check that
no oscillation occurs w i th the application using the above capacitor.
Selection of Input Capacitor (CIN) and Output Capacitor (CL)
The S-1167 Series requires an output capacitor between the VOUT pin and VSS pin for phase
compensation. Operation is stabilized by a cera mic capacitor with an output capacitance of 1.0 μF or more
in the entire temperature range. However, when using an OS capacitor, tantalum capacitor, or aluminum
electrolytic capacitor, a ceramic capacitor with a capacitance of 1.0 μF or more and an equivalent series
resistance (RESR) of 1.0 Ω or less is required.
The value of the output overshoot or undershoot transient response varies depending on the value of the
output capacitor. The required capacitance of the input capacitor differs depending on the application.
The recommended value for an application is 1.0 μF or more for CIN and 1.0 μF or more for CL; however,
when selecting the output capacitor, perform sufficient evaluation, including evaluation of temperature
characteristics, on the actual device.
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 11
Technical Terms
1. Low Dropout Voltage Regulator
The low dropout voltage regulator is a voltage regulator whose dropout voltage is low due to its built-in low on-
resistance transistor.
2. Low Equivalent Series Resistance
A capacitor whose equivalent series resistance (RESR) is low. The S-1167 Series enables use of a low equivalent
series resistance capacitor, such as a ceramic capacitor, for the output-side capacitor (CL). A capacitor whose RESR
is 1.0 Ω 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 on 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 the “Electrical Characteristics” and “Typical Characteristics” for
details.
4. Line Regulation ⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
•OUTIN
OUT1
VΔV
ΔV
Indicates the dependency of the output voltage on the input voltage. T hat 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 (ΔVOUT2)
Indicates the dependency of the output voltage on the output current. T hat 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 the input voltage (VIN1), which is the input voltage (V IN) at the point where the output
voltage has fallen to 98% of the output voltage value (VOUT3) after VIN was gradually decreased from VIN = VOUT(S) +
1.0 V, and the output voltage at that point (VOUT3 × 0.98).
Vdrop = VIN1 − (VOUT3 × 0.98)
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
12
7. Temperature Coefficient of Output Vo ltag e ⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
•OUT
OUT
VΔTa
ΔV
The shadowed area in Figure 11 is the range where VOUT varies in the operating temperature range when the
temperature coefficient of the output voltage is ±100 ppm / °C.
e.g. S-1167B28 Typ.
−40 25
+0.28 mV / °C
V
OUT
[V]
85 Ta [°C]
V
OUT(E)*1
−0.28 mV / °C
*1. VOUT(E) is the value of the output voltage measured at 25°C.
Figure 11
A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
[] [] []
1000C/ppm
VTaV
VVC/mV
Ta
V OUT
OUT
OUT(S)
OUT ÷°
•
Δ
Δ
×=°
Δ
Δ3*2*1*
*1. The temperature change ratio of the output voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 13
Operation
1. Basic Operation
Figure 12 shows the block diagram of the S-1167 Series.
The error amplifier compares the reference voltage (Vref) with Vfb, which is the output voltage resistance-divided by
feedback resistors Rs and Rf. It supplies the output transistor with the gate voltage necessary to ensure a certain
output voltage free of any fluctuations of input voltage and temperature.
VOUT
*1
VSS
VIN
Rs
Rf
Error amplifier
Current supply
Vref
Vfb
−
+
Reference voltage
circuit
*1. Parasitic diode
Figure 12
2. Output Transistor
The S-1167 Series uses a low on-resistance P-channel MOS FET 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 inverse
current flowing from the VOUT pin through a parasitic diode to the VIN pin.
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
14
3. Shutdown Pin (ON / OFF Pin)
This pin starts and stops the regulator.
When the ON / OFF pin is set to the shutdown level, the operation of all internal circuits stops, and the built-in P-
channel MOS FET output transistor between the VIN pin and VOUT pin is turned off to substantially reduce the
current consumption. The VOUT pin becomes the VSS level due to the internally divided resistance of several MΩ
between the VOUT pin and 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 state. 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. W hen the ON / OFF pin is not used, connect it to the
VSS pin if the product type is “A” and to the VIN pin if it is “B”.
Table 7
Product Type ON / OFF Pin Internal Circuit VOUT Pin Voltage Current Consumption
A “L” : Power on Operaing Set value ISS1
A “H” : Power off Stopped VSS level ISS2
B “L” : Power off Stopped VSS level ISS2
B “H” : Power on Operaing Set value ISS1
VSS
ON / OFF
VIN
Figure 13
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 15
Precautions
• Wiring patterns for the VIN pin, VOUT pin and GND pin should be designed so that the impedance is low. When
mounting an output capacitor between the VOUT pin and VSS pin (CL) and a capacitor for stabilizing the input between
VIN pin and VSS pin (CIN), the distance from the capacitors to these pins should be as short as possible.
• Note that the output voltage may increase when a series regulator is used at low load current (10 μA or less).
• Note that the output voltage may increase due to driver leakage when a series regulator is used at high temperatures.
• Generally a series regulator may cause oscillation, depending on the selection of external parts. The following
conditions are recommended for this IC. However, be sure to perform sufficient evaluation under the actual usage
conditions for selection, including evaluation of temperature characteristics.
Input capacitor (CIN) : 1.0 μF or more
Output capacitor (CL) : 1.0 μF or more
Equivalent series resistance (RESR) : 1.0 Ω or less
• The voltage regulator may oscillate when the impedance of the power supply is high and the input capacitor is small or
an input capacitor is not connected.
• It is important to sufficiently evaluate the output voltage fluctuation due to the power supply fluctuation and load
fluctuation characteristics in the actual equipment.
• If the power supply suddenly increases sharply, a momentary overshoot may be output. It is therefore important to
sufficiently evaluate the output voltage at power application in the actual equipment.
• The application conditions for the input voltage, output voltage, and 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 the “
Electrical Characteristics” and footnote *5 of the table.
• SII 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.
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
16
Characteristics (Typical Data)
(1) Output Voltage vs. Output Current (When Load Curren t In creases) (T a = 25°C)
S-1167B15 S-1167B30
V
IN
=1.8 V
3.5 V
6.5 V 2.5 V
2.0 V
0 100 200 300 400 500
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
OUT
[V]
I
OUT
[mA]
0 100 200 300 400 500
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
VOUT [V]
I
OUT
[mA]
V
IN
=3.3 V
3.5 V
4.0 V
5.0 V
6.5 V
S-1167B50
0 100 200 300 400 500
6
5
4
3
2
1
0
V
OUT
[V]
I
OUT
[mA]
V
IN
=5.3 V
5.5 V
6.0 V
6.5 V
Remark In determining the output current, attention should
be paid to the following.
1. The minimum output current value and
footnote *5 specified in Table 6 in the
“ Electrical Characteristics”
2. The package power dissipation
(2) Output Voltage vs. Input Voltage (Ta = 25°C)
S-1167B15 S-1167B30
1.0 1.5 2.0 2.5 3.0 3.5
1.6
1.5
1.4
1.3
1.2
1.1
1.0
V
OUT
[V]
V
IN
[V]
1 mA
30 mA
100 mA
2.5 3.0 3.5 4.0 4.5 5.0
3.1
3.0
2.9
2.8
2.7
2.6
2.5
V
OUT
[V]
V
IN
[V]
1 mA
30 mA
100 mA
S-1167B50
4.5 5.0 5.5 6.0 6.5
5.1
5.0
4.9
4.8
4.7
4.6
4.5
V
OUT
[V]
V
IN
[V]
1 mA
30 mA
100 mA
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 17
(3) Dropout Voltage vs. Output Current
S-1167B15 S-1167B30
0 50 100 150 200
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
V
drop
[V]
I
OUT
[mA]
Ta = 85
°C
25
°C
−
40
°C
0 50 100 150 200
0.30
0.25
0.20
0.15
0.10
0.05
0
Vdrop [V]
I
OUT
[mA]
Ta = 85
°C
25
°C
−
40
°C
S-1167B50
0 50 100 150 200
0.25
0.20
0.15
0.10
0.05
0
V
drop
[V]
I
OUT
[mA]
Ta = 85
°C
25
°C
−
40
°C
(4) Dropout Voltage vs. Set Output Voltage
0123 546
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
V
drop
[V]
V
OTA
[V]
I
OUT
=150 mA
100 mA
50 mA
30 mA
10 mA
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
18
(5) Output Voltage vs. Ambient Temperature
S-1167B15 S-1167B30
−40−15 10 6035 85
1.60
1.55
1.50
1.45
1.40
V
OUT
[V]
Ta [
°C
]
−40−15 10 6035 85
3.20
3.15
3.10
3.05
3.00
2.95
2.90
2.85
2.80
V
OUT
[V]
Ta [
°C
]
S-1167B50
−40−15 10 6035 85
5.2
5.1
5.0
4.9
4.8
V
OUT
[V]
Ta [
°C
]
(6) Current Consumption vs. Input Voltage
S-1167B15 S-1167B30
0123 6547
10
8
6
4
2
0
I
SS1
[μA]
VIN [
V
]
−
40
°C
85
°C
25
°C
0123 6547
10
8
6
4
2
0
I
SS1
[μA]
VIN [
V
]
85
°C
25
°C
−
40
°C
S-1167B50
0123 6547
10
8
6
4
2
0
I
SS1
[μA]
V
IN
[
V
]
85
°C
25
°C
−
40
°C
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 19
(7) Ripple Rejection (Ta = 25°C)
S-1167B15 VIN = 2.5 V, COUT =1.0 μF S-1167B30 VIN = 4.0 V, COUT = 1.0 μF
10 100 1K 100K10K 1M
100
80
60
40
20
0
Ripple Rejection [dB]
Frequency [Hz]
I
OUT
= 1 mA
30 mA
100 mA
10 100 1K 100K10K 1M
100
80
60
40
20
0
Ripple Rejection [dB]
Frequency [Hz]
I
OUT
= 1 mA
30 mA
100 mA
S-1167B50 VIN = 6.0 V, COUT =1.0 μF
10 100 1K 100K10K 1M
100
80
60
40
20
0
Ripple Rejection [dB]
Frequency [Hz]
I
OUT
= 1 mA
30 mA
100 mA
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
20
Reference Data
(1) Input Transient Response Characteristics (Ta = 25°C)
S-1167B15
IOUT = 30 mA, tr = tf = 5.0 μs, COUT =1.0 μF, CIN = 1.0 μF S-1167B30
IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 1.0 μF, CIN = 1.0 μF
V
IN
[V]
−
40
−20 0 20
40 60 80 100120140160
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
OUT
[V]
t [μs]
V
IN
V
OUT
V
IN
[V]
−
40
−20 0 20
40 60 80 100120140160
3.06
3.04
3.02
3.00
2.98
2.96
2.94
6
5
4
3
2
1
0
V
OUT
[V]
t [μs]
V
IN
V
OUT
S-1167B50
IOUT = 30 mA, tr = tf = 5.0 μs, COUT =1.0 μF, CIN = 1.0 μF
V
IN
[V]
−
40
−20 0 20
40 60 80 100120140160
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
8
7
6
5
4
3
2
1
0
V
OUT
[V]
t [μs]
VIN
VOUT
(2) Load Transient Response Characteristics (Ta = 25°C)
S-1167B15
VIN = 2.5 V, COUT = 1.0 μF, CIN = 1.0 μF, IOUT = 50 ↔ 100 mA S-1167B30
VIN = 4.0 V, COUT = 1.0 μF, CIN = 1.0 μF, IOUT = 50 ↔ 100 mA
−
40
−
20 0 20
40 60 80 100120140160
1.70
1.65
1.60
1.55
1.50
1.45
1.40
150
100
50
0
−
50
−
100
−
150
V
OUT
[V]
I
OUT
[mA]
t [μs]
I
OUT
V
OUT
−
40
−
20 0 20
40 60 80 100120140160
3.15
3.10
3.05
3.00
2.95
2.90
2.85
150
100
50
0
−
50
−
100
−
150
V
OUT
[V]
I
OUT
[mA]
t [μs]
I
OUT
V
OUT
S-1167B50
VIN =6.0 V, COUT = 1.0 μF, CIN = 1.0 μF, IOUT = 50 ↔ 100 mA
−
40
−
20 0 20
40 60 80 100120140160
5.15
5.10
5.05
5.00
4.95
4.90
4.85
150
100
50
0
−
50
−
100
−
150
V
OUT
[V]
I
OUT
[mA]
t [μs]
I
OUT
V
OUT
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 21
(3) ON / OFF Pin Transient Response Characteristics (Ta = 25°C)
S-1167B15
VIN = 2.5 V, COUT =1.0 μF, CIN = 1.0 μF, IOUT = 100 mA S-1167B30
VIN = 4.0 V, COUT =1.0 μF, CIN = 1.0 μF, IOUT = 100 mA
−
0.4
−
0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
5
4
3
2
1
0
−
1
3
2
1
0
−
1
−
2
−
3
V
OUT
[V]
V
ON / OFF
[V]
t [ms]
V
OUT
V
ON / OFF
−
0.4
−
0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
10
8
6
4
2
0
−
2
6
4
2
0
−
2
−
4
−
6
V
OUT
[V]
V
ON / OFF
[V]
t [ms]
V
OUT
V
ON / OFF
S-1167B50
VIN = 6.0 V, COUT =1.0 μF, CIN = 1.0 μF, IOUT = 100 mA
−
0.4
−
0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
20
16
12
8
4
0
−
4
9
6
3
0
−
3
−
6
−
9
VOUT [V]
VON / OFF [V]
t [ms]
VON / OFF
VOUT
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series Rev.3.0_00
Seiko Instruments Inc.
22
Marking Specifications
(1) SOT-23-5
(1) to (3): Product code (refer to Product name vs. Product code)
(4) : Lot number
1
SOT-23-5
To
p
view
2 3
4
(1) (2) (3) (4)
5
Product name vs. Product code
(a) S-1167 Series A typ e
Product code
Product name (1) (2) (3)
S-1167A15-M5T1x P 2 A
S-1167A1J-M5T1x P 3 P
S-1167A19-M5T1x P 2 E
S-1167A30-M5T1x P 2 P
S-1167A33-M5T1x P 2 S
S-1167A50-M5T1x P 3 J
(b) S-1167 Series B type
Product code Product code
Product name (1) (2) (3) Product name (1) (2) (3)
S-1167B15-M5T1x P 4 A S-1167B36-M5T1x P 4 V
S-1167B16-M5T1x P 4 B S-1167B37-M5T1x P 4 W
S-1167B17-M5T1x P 4 C S-1167B38-M5T1x P 4 X
S-1167B18-M5T1x P 4 D S-1167B39-M5T1x P 4 Y
S-1167B19-M5T1x P 4 E S-1167B40-M5T1x P 4 Z
S-1167B20-M5T1x P 4 F S-1167B41-M5T1x P 5 A
S-1167B21-M5T1x P 4 G S-1167B42-M5T1x P 5 B
S-1167B22-M5T1x P 4 H S-1167B43-M5T1x P 5 C
S-1167B23-M5T1x P 4 I S-1167B44-M5T1x P 5 D
S-1167B24-M5T1x P 4 J S-1167B45-M5T1x P 5 E
S-1167B25-M5T1x P 4 K S-1167B46-M5T1x P 5 F
S-1167B26-M5T1x P 4 L S-1167B47-M5T1x P 5 G
S-1167B27-M5T1x P 4 M S-1167B48-M5T1x P 5 H
S-1167B28-M5T1x P 4 N S-1167B49-M5T1x P 5 I
S-1167B29-M5T1x P 4 O S-1167B50-M5T1x P 5 J
S-1167B30-M5T1x P 4 P S-1167B51-M5T1x P 5 K
S-1167B31-M5T1x P 4 Q S-1167B52-M5T1x P 5 L
S-1167B32-M5T1x P 4 R S-1167B53-M5T1x P 5 M
S-1167B33-M5T1x P 4 S S-1167B54-M5T1x P 5 N
S-1167B34-M5T1x P 4 T S-1167B55-M5T1x P 5 O
S-1167B35-M5T1x P 4 U
Remark 1. Please contact our sales office for the products other than those above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1167 Series
Seiko Instruments Inc. 23
(2) SNT-6A(H)
(1) to (3): Product code (refer to Product name vs. Product code)
(4) to (6): Lot number
SNT-6A(H)
To
p
view
1
2
3 4
6
5
(1)
(4)
(2)
(5)
(3)
(6)
Product name vs. Product code
Product code Product code
Product name (1) (2) (3) Product name (1) (2) (3)
S-1167B15-I6T2x P 4 A S-1167B36-I6T2x P 4 V
S-1167B16-I6T2x P 4 B S-1167B37-I6T2x P 4 W
S-1167B17-I6T2x P 4 C S-1167B38-I6T2x P 4 X
S-1167B18-I6T2x P 4 D S-1167B39-I6T2x P 4 Y
S-1167B19-I6T2x P 4 E S-1167B40-I6T2x P 4 Z
S-1167B20-I6T2x P 4 F S-1167B41-I6T2x P 5 A
S-1167B21-I6T2x P 4 G S-1167B42-I6T2x P 5 B
S-1167B22-I6T2x P 4 H S-1167B43-I6T2x P 5 C
S-1167B23-I6T2x P 4 I S-1167B44-I6T2x P 5 D
S-1167B24-I6T2x P 4 J S-1167B45-I6T2x P 5 E
S-1167B25-I6T2x P 4 K S-1167B46-I6T2x P 5 F
S-1167B26-I6T2x P 4 L S-1167B47-I6T2x P 5 G
S-1167B27-I6T2x P 4 M S-1167B48-I6T2x P 5 H
S-1167B28-I6T2x P 4 N S-1167B49-I6T2x P 5 I
S-1167B29-I6T2x P 4 O S-1167B50-I6T2x P 5 J
S-1167B30-I6T2x P 4 P S-1167B51-I6T2x P 5 K
S-1167B31-I6T2x P 4 Q S-1167B52-I6T2x P 5 L
S-1167B32-I6T2x P 4 R S-1167B53-I6T2x P 5 M
S-1167B33-I6T2x P 4 S S-1167B54-I6T2x P 5 N
S-1167B34-I6T2x P 4 T S-1167B55-I6T2x P 5 O
S-1167B35-I6T2x P 4 U
Remark 1. Please contact our sales office for products with type A products.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
No.
TITLE
SCALE
UNIT mm
Seiko Instruments 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-1.2
MP005-A-P-SD-1.2
SOT235-A-PKG Dimensions
No.
TITLE
SCALE
UNIT mm
Seiko Instruments 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)
No.
TITLE
SCALE
UNIT mm
Seiko Instruments 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
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
SNT-6A(H)-A-PKG Dimensions
PI006-A-P-SD-2.0
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-2.0
12
3
4
5
6
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
5°
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
PI006-A-C-SD-1.0
SNT-6A(H)-A-Carrier Tape
No. PI006-A-C-SD-1.0
+0.1
-0
1
2
4
3
56
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
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
SNT-6A(H)-A-Reel
5,000
No.
TITLE
SCALE
UNIT mm
SNT-6A(H)-A-Land Recommendation
Seiko Instruments Inc.
PI006-A-L-SD-3.0
No. PI006-A-L-SD-3.0
0.3
0.20.3
0.20.3
0.52
1.36
0.52
Caution Making the wire pattern under the package is possible. However, note that the package
may be upraised due to the thickness made by the silk screen printing and of a solder
resist on the pattern because this package does not have the standoff.
www.sii-ic.com
• The information described herein is subject to change without notice.
• Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein
whose related industrial properties, patents, or other rights belong to third parties. The application circuit
examples explain typical applications of the products, and do not guarantee the success of any specific
mass-production design.
• When the products described herein are regulated products subject to the Wassenaar Arrangement or other
agreements, they may not be exported without authorization from the approp riate governmental authority.
• Use of the information described herein for other purposes and/or reproduction or copying without the
express permissi on of Seiko Instruments Inc. is strictly prohibited.
• The products described herein cannot be used as part of any device or equipment affecting the human
body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus
installed in airplanes and other vehicle s, without prior written permission of Seiko Instruments Inc.
• The products described herein are not designed to be radiation-proof .
• Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the
failure or malfunction of semiconductor products may occur. The user of these products should therefore
give thorough consideration to safety design, including redundancy, fire-prevention measures, and
malfunction prevention, to prevent any accidents, fires, or comm unity damage that may ensue.
