S-1142 Series
www.sii-ic.com
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION
LOW DROPOUT CMOS VOLTAGE REGULATO
R
© Seiko Instruments Inc., 2009-2012 Rev.3.0_00
Seiko Instruments Inc. 1
The S-1142 Series, developed based on high-withstand voltage CMOS process, is a positive voltage regulator with a
high-withstand voltage, low current consumption, and high output voltage accuracy. The S-1142 Series operates at a high
maximum operating voltage of 50 V and a low current consumption of 4.0 μA typ. In addition to a built-in low on-resistance
transistor which provides a very small dropout voltage and a large output current, this voltage regulator also has a built-in
ON / OFF circuit.
An overcurrent protector prevents the load current from exceeding the capacitance of the output transistor, and a built-in
thermal shutdown circuit prevents damage caused by heat.
A high heat radiation HSOP-6 package enables high-density mounting.
Features
• Output voltage: 2.0 V to 15.0 V, selectable in 0.1 V step
• Input voltage: 3.0 V to 50 V
• High-accuracy output voltage: ±1.0% (Tj = +25°C)
±3.0% (Tj = −40°C to +105°C)
• Low current consumption: During operation: 4.0 μA typ., 9.0 μA max. (Tj = −40°C to +105°C)
During power-off: 0.1 μA typ., 1.0 μA max. (Tj = −40°C to +105°C)
• High output current: 200 mA (at VIN ≥ VOUT(S) + 2.0 V)*1
• Low equivalent series resistance capacitor: Ceramic capacitor of 0.1 μF or more can be used as the I/O capacitor.
• Built-in overcurrent protector: Limits overcurrent of output transistor
• Built-in thermal shutdown circuit: Prevents damage caused by heat
• 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.
Application
• Constant-voltage power supply for home electric appliance
Package
• HSOP-6
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
2
Block Diagram
Reference
voltage circuit
ON / OFF
*1
ON / OFF circuit
+
−
VIN
VSS
VOUT
Overcurrent
protector
Thermal shutdown circuit
*1. Parasitic diode
Figure 1
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 3
Product Name Structure
Users can select the product type, output voltage, and package type for the S-1142 Series. For the contents of product
name, refer to "1. Product name", "2. Package" regarding the package drawings and "3. Product name list" for
details of product names.
1. Product name
S-1142 x xx I - E6T1 U
Package abbreviation and IC packing specifications*1
E6T1: HSOP-6, Tape
Operating temperature
I: Ta = −40°C to +85°C
Value of output voltage
20 to F0
(e.g., when the output voltage is 2.0 V, it is expressed as 20.
when the output voltage is 10 V, it is expressed as A0.
when the output voltage is 11 V, it is expressed as B0.
when the output voltage is 12 V, it is expressed as C0.
•
•
•
when the output voltage is 15 V, it is expressed as F0.)
Product type*2
A: ON / OFF pin negative logic
B: ON / OFF pin positive logic
Environmental code
U: Lead-free (Sn 100%), halogen-free
*1. Refer to the tape drawing.
*2. Refer to "3. ON / OFF pin" in " Operation".
2. Package
Table 1 Package Drawing Codes
Package Name Dimension Tape Reel Land
HSOP-6 FH006-A-P-SD FH006-A-C-SD FH006-A-R-SD FH006-A-L-SD
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
4
3. Product name list
Table 2
Output Voltage HSOP-6
2.0 V ± 1.0% S-1142B20I-E6T1U
2.5 V ± 1.0% S-1142B25I-E6T1U
2.7 V ± 1.0% S-1142B27I-E6T1U
2.8 V ± 1.0% S-1142B28I-E6T1U
2.85 V ± 1.0% S-1142B2JI-E6T1U
3.0 V ± 1.0% S-1142B30I-E6T1U
3.2 V ± 1.0% S-1142B32I-E6T1U
3.3 V ± 1.0% S-1142B33I-E6T1U
3.5 V ± 1.0% S-1142B35I-E6T1U
3.7 V ± 1.0% S-1142B37I-E6T1U
4.0 V ± 1.0% S-1142B40I-E6T1U
5.0 V ±1.0% S-1142B50I-E6T1U
8.0 V ± 1.0% S-1142B80I-E6T1U
12.5 V ± 1.0% S-1142BC5I-E6T1U
15.0 V ± 1.0% S-1142BF0I-E6T1U
Remark Please contact our sales office for products with an output voltage
other than those listed above or type A products.
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 5
Pin Configuration
1. HSOP-6
Table 3
Pin No. Symbol Description
1 VOUT Output voltage pin
2 VSS GND pin
3 ON / OFF ON / OFF pin
4
NC*1 No connection
5 VSS GND pin
6 VIN Input voltage pin
132
465
Top view
*1. The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
Figure 2
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
6
Absolute Maximum Ratings
Table 4
(Ta = +25°C unless otherwise specified
)
Item Symbol Absolute Maximum Rating Unit
VIN V
SS − 0.3 to VSS + 60 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
Power dissipation PD 1900*1 mW
Junction temperature Tj −40 to +125 °C
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: 50 mm × 50 mm × t1.6 mm
(2) Board material: Glass epoxy resin (two layers)
(3) Wiring ratio: 50%
(4) Test conditions: When mounted on board (wind speed: 0 m/s)
(5) Land pattern: Refer to the recommended land pattern (drawing code: FH006-A-L-SD)
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
2400
1600
0
Power dissipation (PD) [mW]
Ambient temperature (Ta) [°C]
800
2000
1200
400
Figure 3 Power Dissipation of Package (When Mounted on Board)
Table 5
Condition Power Dissipation Thermal Resistance Value (θj − a)
HSOP-6 (When mounted on board) 1900 mW 53°C/W
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 7
Power dissipation of HSOP-6 (reference)
Package power dissipation differs depending on the mounting conditions.
The power dissipation characteristics under the following test conditions should be taken as reference values only.
[Mounted board]
(1) Board size: 50 mm × 50 mm × t1.6 mm
(2) Board material: Glass epoxy resin (two layers)
(3) Wiring ratio: 90%
(4) Test conditions: When mounted on board (wind speed: 0 m/s)
(5) Land pattern: Refer to the recommended land pattern (drawing code: FH006-A-L-SD)
0 50 100 150
2400
1600
0
Power dissipation (PD) [mW]
Ambient temperature (Ta) [°C]
800
2000
1200
400
Figure 4 Power Dissipation of Package (When Mounted on Board)
Table 6
Condition Power Dissipation
(Reference)
Thermal Resistance Value
(θj − a)
HSOP-6 (When mounted on board) 2000 mW 50°C/W
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
8
Electrical Characteristics
Table 6
(VIN = Tj = −40°C ~ +125°C, Ta = −40°C ~ +85°C unless otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit Test
Circuit
Output voltage*1 VOUT(E) VIN = VOUT(S) + 1.0 V,
IOUT = 30 mA, −40°C ≤ Tj ≤ +105°C
VOUT(S)
× 0.97 VOUT(S) VOUT(S)
× 1.03 V 1
Output current*2 I
OUT V
IN ≥ VOUT(S) + 2.0 V 200*4 − − mA 3
2.0 V ≤ VOUT(S) < 2.2 V − 1.0 − V 1
2.2 V ≤ VOUT(S) < 2.4 V − 0.8 − V 1
2.4 V ≤ VOUT(S) < 2.6 V − 0.6 − V 1
2.6 V ≤ VOUT(S) < 3.0 V − 0.45 − V 1
3.0 V ≤ VOUT(S) < 3.5 V − 0.35 − V 1
3.5 V ≤ VOUT(S) < 4.0 V − 0.3 − V 1
4.0 V ≤ VOUT(S) < 5.0 V − 0.27 − V 1
5.0 V ≤ VOUT(S) < 7.0 V − 0.23 − V 1
7.0 V ≤ VOUT(S) < 9.0 V − 0.2 − V 1
IOUT = 100 mA
Ta = +25°C
9.0 V ≤ VOUT(S) ≤ 15.0 V − 0.18 − V 1
2.0 V ≤ VOUT(S) < 2.2 V − 1.12 − V 1
2.2 V ≤ VOUT(S) < 2.4 V − 1.02 − V 1
2.4 V ≤ VOUT(S) < 2.6 V − 0.92 − V 1
2.6 V ≤ VOUT(S) < 3.0 V − 0.82 − V 1
3.0 V ≤ VOUT(S) < 3.5 V − 0.72 − V 1
3.5 V ≤ VOUT(S) < 4.0 V − 0.62 − V 1
4.0 V ≤ VOUT(S) < 5.0 V − 0.55 − V 1
5.0 V ≤ VOUT(S) < 7.0 V − 0.5 − V 1
7.0 V ≤ VOUT(S) < 9.0 V − 0.45 − V 1
Dropout voltage*3 Vdrop
IOUT = 200 mA
Ta = +25°C
9.0 V ≤ VOUT(S) ≤ 15.0 V − 0.4 − V 1
Line regulation
OUTIN
1OUT
VV
V
•Δ
Δ
VOUT(S) + 1.0 V ≤ VIN ≤ 30 V, IOUT = 30 mA − 0.05 0.3 %/V 1
VIN = VOUT(S) + 1.0 V, 2.0 V ≤ VOUT(S) < 5.1 V,
0.1 mA ≤ IOUT ≤ 40 mA − 20 40 mV 1
VIN = VOUT(S) + 1.0 V, 5.1 V ≤ VOUT(S) < 12.1 V,
0.1 mA ≤ IOUT ≤ 40 mA − 20 60 mV 1
Load regulation ΔVOUT2
VIN = VOUT(S) + 1.0 V, 12.1 V≤ VOUT(S) ≤ 15.0 V,
0.1 mA ≤ IOUT ≤ 40 mA − 20 80 mV 1
Current consumption
during operation ISS1 VIN = VOUT(S) + 1.0 V,
ON / OFF pin = ON, no load − 4.0 9.0
μA 2
Current consumption
during power-off ISS2 VIN = VOUT(S) + 1.0 V,
ON / OFF pin = ON, no load − 0.1 1.0
μA 2
Input voltage VIN − 3.0 − 50 V −
ON / OFF pin input
voltage "H" VSH VIN = VOUT(S) + 1.0 V,
RL = 1.0 kΩ, determined by VOUT output level 1.5 − − V 4
ON / OFF pin input
voltage "L" VSL VIN = VOUT(S) + 1.0 V,
RL = 1.0 kΩ, determined by VOUT output level − − 0.3 V 4
ON / OFF pin input
current "H" ISH VIN = VOUT(S) + 1.0 V,
VON / OFF = VOUT(S) + 1.0 V −0.1 − 0.1 μA 4
ON / OFF pin input
current "L" ISL VIN = VOUT(S) + 1.0 V, VON / OFF = 0 V −0.1 − 0.1 μA 4
2.0 V ≤ VOUT(S) < 2.3 V − 50 − dB 5
2.3 V ≤ VOUT(S) < 3.6 V − 45 − dB 5
3.6 V ≤ VOUT(S) < 6.1 V − 40 − dB 5
6.1 V ≤ VOUT(S) < 10.1 V − 35 − dB 5
Ripple rejection RR
VIN = VOUT(S) + 1.0 V,
f = 100 Hz,
ΔVrip = 0.5 Vrms,
IOUT = 30 mA,
Ta = +25°C 10.1 V ≤ VOUT(S) ≤ 15.0 V − 30 − dB 5
Short-circuit current ISHORT VIN = VOUT(S) + 1.0 V, ON / OFF pin = ON,
VOUT = 0 V, Ta = +25°C − 80 − mA 3
Thermal shutdown
detection temperature
TSD Junction temperature − 150 − °C −
Thermal shutdown
release temperature
TSR Junction temperature − 125 − °C −
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 9
*1. V
OUT(S): Set output voltage
VOUT(E): Actual output voltage
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. V
drop = VIN1 − (VOUT3 × 0.98)
VOUT3 is the output voltage when VIN = VOUT(S) + 2.0 V, and IOUT = 100 mA or 200 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input
voltage.
*4. The output current can be at least this value.
Due to limitation of 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-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
10
Test Circuits
+
VOUT
VIN
VSS
+
V
A
ON / OFF
Set to power ON
Figure 5 Test Circuit 1
VOUT
VIN
VSS
ON / OFF
Set to V
IN
or GND
+
A
Figure 6 Test Circuit 2
Set to power ON
VOUT
VIN
VSS
+
V
+
A
ON / OFF
Figure 7 Test Circuit 3
VOUT
VIN
VSS
+
V
ON / OFF
+
A RL
Figure 8 Test Circuit 4
VOUT
VIN
VSS
+
V
ON / OFF R
L
Set to power ON
Figure 9 Test Circuit 5
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 11
Standard Circuit
C
IN*1
C
L*2
Input Output
GND
Single GND
VOUT
VIN
VSS
ON / OFF
*1. CIN is a capacitor for stabilizing the input.
*2. Ceramic capacitor of 0.1 μF or more can be used as CL.
Figure 10
Caution The above connection diagram and constants will not guarantee successful operation. Perform
thorough evaluation using an actual application to set the constants.
Application Conditions
Input capacitor (CIN): 0.1 μF or more
Output capacitor (CL): 0.1 μF or more (ceramic capacitor)
Caution Generally, series regulator may oscillate depending on the external components. Confirm that no
oscillation occur in the application for which the above capacitors are used.
Selection of Input and Output Capacitors (CIN, CL)
The S-1142 Series requires an output capacitor between the VOUT and VSS pins for phase compensation. Operation
is stabilized by a ceramic capacitor with an output capacitance of 0.1 μF or more over the entire temperature range.
When using an OS capacitor, a tantalum capacitor, or an aluminum electrolytic capacitor, the capacitance must be 0.1
μF or more.
The values of output overshoot and undershoot, which are transient response characteristics, vary depending on the
value of the output capacitor.
The required value of capacitance for the input capacitor differs depending on the application.
Set the value for input capacitor (CIN) and output capacitor (CL) as follows.
C
IN ≥ 0.1 μF
C
L ≥ 0.1 μF
Caution Define the capacity values of CIN and CL by sufficient evaluation including the temperature
characteristics under the actual usage conditions.
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
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. Output voltage (VOUT)
The accuracy of the output voltage is ensured at ±3.0% under 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 " Electrical Characteristics" and " Characteristics (Typical Data)"
for details.
3. Line regulation ⎝
⎛⎠
⎞
ΔVOUT1
ΔVIN • VOUT
Indicates the dependency of the output voltage against the input voltage. That is, the value shows how much the
output voltage changes due to a change in the input voltage after fixing output current constant.
4. Load regulation (ΔVOUT2)
Indicates the dependency of the output voltage against the output current. That is, the value shows how much the
output voltage changes due to a change in the output current after fixing input voltage constant.
5. Dropout voltage (Vdrop)
Indicates the difference between the output voltage and the input voltage VIN1, which is the input voltage (VIN) when
decreasing input voltage VIN gradually until the output voltage has dropped to the value of 98% of output voltage
VOUT3, which is at VIN = VOUT(S) + 2.0 V.
Vdrop = VIN1 − (VOUT3 × 0.98)
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 13
Operation
1. Basic operation
Figure 11 shows a block diagram of the S-1142 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.
VOUT
*1
VSS
VIN
Rs
Rf
Error amplifier
Constant
current
supply
Vref
Vfb
−
+
Reference voltage
circuit
*1. Parasitic diode
Figure 11
2. Output transistor
In the S-1142 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 inverse
current which flows, because of a parasitic diode between the VIN and VOUT pins, when the potential of VOUT
becomes higher than VIN.
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
14
3. ON / OFF pin
This pin starts and stops the regulator.
When the ON / OFF pin is set to the power-off level, the entire internal circuit stops operating, and the built-in
P-channel MOS FET output transistor between the VIN and VOUT pins is turned off, in order to reduce the current
consumption significantly. The VOUT pin is set to the VSS level by the internal dividing resistor of several MΩ
between the VOUT and VSS pins.
Note that the current consumption increases when a voltage of 0.3 V to VIN − 0.3 V is applied to the ON / OFF pin.
The ON / OFF pin is configured as shown in Figure 12. Since the ON / OFF pin is neither pulled down nor pulled up
internally, do not use it in the floating state. 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 the B type.
Table 8
Logic Type ON / OFF Pin Internal Circuit VOUT Pin Voltage Current Consumption
A "L": Power-on Operate Set value ISS1
A "H": Power-off Stop VSS level ISS2
B "L": Power-off Stop VSS level ISS2
B "H": Power-on Operate Set value ISS1
VSS
ON / OFF
VIN
Figure 12
4. Overcurrent protector
The S-1142 Series includes an overcurrent protection circuit which has the characteristics shown in "1. Output
voltage vs. Output current (when load current is increased) (Ta = +25°C)" in " Characteristics (Typical
Data)", in order to protect the output transistor against an excessive output current and short circuiting between the
VOUT and VSS pin. The current (ISHORT) when the output pin is short-circuited is internally set at approx. 80 mA typ.,
and the initial value is restored for the output voltage, if releasing a short circuit once.
Caution Using the overcurrent protection circuit is to protect the output transistor from accidental
conditions such as short circuited load and the rapid and large current flow in the large capacitor.
The overcurrent protection circuit is not suitable for use under the short circuit status or large
current flowing (200 mA or more) that last long.
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 15
5. Thermal shutdown circuit
The S-1142 Series has a thermal shutdown circuit to protect the device from damage due to overheat. When the
junction temperature rises to 150°C typ., the thermal shutdown circuit operates to stop regulating. When the
junction temperature drops to 125°C typ., the thermal shutdown circuit is released to restart regulating.
Due to self-heating of the S-1142 Series, if the thermal shutdown circuit starts operating, it stops regulating so that
the output voltage drops. When regulation stops, the S-1142 Series does not itself generate heat and the IC’s
temperature drops. When the temperature drops, the thermal shutdown circuit is released to restart regulating, thus
this IC generates heat again. Repeating this procedure makes the waveform of the output voltage into a pulse-like
form. Stop or restart of regulation continues unless decreasing either both of the input voltage and the output
voltage in order to reduce the internal current consumption, or decreasing the ambient temperature.
Table 9
Thermal Shutdown Circuit VOUT Pin Voltage
Operate: 150°C typ.*1 VSS level
Release: 125°C typ.*1 Set value
*1. Junction temperature
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
16
Precautions
• Wiring patterns for the VIN, VOUT and GND pins should be designed so that the impedance is low. When mounting
an output capacitor between the VOUT and VSS pins (CL) and a capacitor for stabilizing the input between the VIN
and VSS pins (CIN), the distance from the capacitors to these pins should be as short as possible.
• Note that the output voltage may generally increase when a series regulator is used at low load current (0.1 mA or
less).
• Note that the output voltage may generally increase due to the leakage current from a driver when a series regulator
is used at a high temperature.
• Note that the output voltage may increase due to the leakage current from a driver even if the ON / OFF pin is at the
power-off level when a series regulator is used at a high temperature.
• Generally series regulators may oscillate, depending on the selection of external parts. The following conditions are
recommended for the S-1142 Series. However, be sure to perform sufficient evaluation under the actual usage
conditions for selection, including the temperature characteristics. Regarding the equivalent series resistance (RESR)
for the output capacitor, refer to "6.
Example of equivalent series resistance vs. Output current characteristics
(Ta = +25°C)" in " Reference Data".
Input capacitor (CIN): 0.1 μF or more
Output capacitor (CL): 0.1 μF or more
• The voltage regulator may oscillate when the impedance of the power supply is high and the input capacitance of the
IC is small, or an input capacitor is not connected.
• It is important to sufficiently evaluate in an actual device output voltage fluctuations caused by power supply or load
fluctuations.
• A momentary overshoot may be output when the power supply suddenly increases, and the output capacitance is
small. It is therefore important to sufficiently evaluate the output voltage at power application in actual device.
• The application conditions for the input voltage, output voltage, and load current should not exceed power dissipation
of the package.
• 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 *4 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.
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 17
Characteristics (Typical Data)
1. Output voltage vs. Output current (when load current is increased) (Ta = +25°C)
1. 1 VOUT = 2.0 V 1. 2 VOUT = 5.0 V
100 200 300 400 500 600 700 8000
2.5
1.0
0.5
1.5
2.0
0
13.5 V
4.0 V
V
OUT
[V]
I
OUT
[mA]
V
IN
= 3.0 V
100 200 300 400 500 600 700 8000
6
3
2
1
4
5
0
V
OUT
[V]
I
OUT
[mA]
13.5 V
6.0 V
7.0 V
V
IN
= 5.5 V
1. 3 VOUT = 12.0 V
100 200 300 400 500 600 700 8000
14
12
10
8
6
4
2
0
V
OUT
[V]
I
OUT
[mA]
13.5 V
13.0 V
V
IN
= 12.5 V
Remark In determining the output current, attention should
be paid to the following.
1. The minimum value of output current value
and footnote *4 in Table 7 in the "Electrical
Characteristics"
2. Power dissipation of the package
2. Output voltage vs. Input voltage (Ta = +25°C)
2. 1 VOUT = 2.0 V 2. 2 VOUT = 5.0 V
5 10152025300
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
V
OUT
[V]
V
IN
[V]
50 mA
I
OUT
= 1 mA
30 mA
5 10152025300
5.2
5.1
5.0
4.9
4.8
4.7
4.6
4.5
V
OUT
[V]
V
IN
[V]
50 mA
I
OUT
= 1 mA
30 mA
2. 3 VOUT = 12.0 V
15 20 25 3010
12.4
12.2
12.0
11.8
11.6
11.4
11.2
11.0
V
OUT
[V]
V
IN
[V]
50 mA
I
OUT
= 1 mA
30 mA
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
18
3. Dropout voltage vs. Output current
3. 1 VOUT = 2.0 V 3. 2 VOUT = 5.0 V
50 100 150 200 2500
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
drop
[V]
I
OUT
[mA]
+25°C
−40°C
Tj = +125°C
50 100 150 200 2500
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
I
OUT
[mA]
+25°C
−40°C
Tj = +125°C
V
drop
[V]
3. 3 VOUT = 12.0 V
50 100 150 200 2500
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
I
OUT
[mA]
+25°C
−40°C
Tj = +125°C
V
drop
[V]
4. Dropout voltage vs. Temperature
4. 1 VOUT = 2.0 V 4. 2 VOUT = 5.0 V
0.9
0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
−40 −25 0 25 50 75 100 125
Tj [°C]
I
OUT
= 100 mA
10 mA
V
drop
[V]
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
−40 −25 0 25 50 75 100 125
Tj [°C]
I
OUT
= 100 mA
10 mA
V
drop
[V]
4. 3 VOUT = 12.0 V
−40 −25 0 25 50 75 100 125
0.30
0
Tj [°C]
0.25
0.20
0.15
0.10
0.05
I
OUT
= 100 mA
10 mA
V
drop
[V]
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 19
5. Dropout voltage vs. Set output voltage (Tj = +25°C)
24681012140
0.6
0.4
0.2
0.8
1.0
1.2
0
V
drop
[V]
V
OUT
[V]
100 mA
30 mA
10 mA
1 mA
I
OUT
= 200 mA
6. Output voltage vs. Temperature
6. 1 VOUT = 2.0 V
VIN = 3.0 V
6. 2 VOUT = 5.0 V
VIN = 6.0 V
−40 −25 0 25 50 75 100 125
2.04
2.02
2.00
1.98
1.96
Tj [°C]
V
OUT
[V]
5.2
5.1
5.0
4.9
4.8
−40 −25 0 25 50 75 100 125
Tj [°C]
V
OUT
[V]
6. 3 VOUT = 12.0 V
VIN = 13.0 V
12.4
12.2
12.0
11.8
11.6
−40 −25 0 25 50 75 100 125
Tj [°C]
V
OUT
[V]
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
20
7. Current consumption during operation vs. Input voltage (when ON / OFF pin is ON, no load)
7. 1 VOUT = 2.0 V 7. 2 VOUT = 5.0 V
5 10152025300
16
14
12
10
8
6
4
2
0
I
SS1
[μA]
V
IN
[V]
+25°C
−40°C
Tj = +125°C
I
SS1
[μA]
V
IN
[V]
5 10152025300
16
14
12
10
8
6
4
2
0
ISS1 [μA]
VIN [V]
+25°C
−40°C
Tj = +125°C
7. 3 VOUT = 12.0 V
5 10152025300
16
14
12
10
8
6
4
2
0
I
SS1
[μA]
V
IN
[V]
+25°C
−40°C
Tj = +125°C
8. Current consumption during operation vs. Temperature
8. 1 VOUT = 2.0 V
VIN = 3.0 V
8. 2 VOUT = 5.0 V
VIN = 6.0 V
6.0
2.5
5.5
5.0
4.5
4.0
3.5
3.0
−40 −25 0 25 50 75 100 125
Tj [°C]
I
SS1
[μA]
6.0
2.5
5.5
5.0
4.5
4.0
3.5
3.0
−40 −25 0 25 50 75 100 125
Tj [°C]
I
SS1
[μA]
8. 3 VOUT = 12.0 V
VIN = 13.0 V
6.0
2.5
5.5
5.0
4.5
4.0
3.5
3.0
−40 −25 0 25 50 75 100 125
Tj [°C]
ISS1 [μA]
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 21
9. Current consumption during operation vs. Output current (Ta = +25°C)
9. 1 VOUT = 2.0 V 9. 2 VOUT = 5.0 V
25 50 75 100 125 1500
160
140
120
100
80
60
40
20
0
I
SS1
[μA]
I
OUT
[mA]
3.0 V
V
IN
= 13.5 V
25 50 75 100 125 1500
160
140
120
100
80
60
40
20
0
I
SS1
[μA]
I
OUT
[mA]
6.0 V
V
IN
= 13.5 V
9. 3 VOUT = 12.0 V
25 50 75 100 125 1500
160
140
120
100
80
60
40
20
0
I
SS1
[μA]
I
OUT
[mA]
13.0 V
V
IN
= 20.0 V
10. Output current vs. Input voltage*1
10. 1 VOUT = 3.3 V 10. 2 VOUT = 5.0 V
10 20 30 40 500
250
0
I
OUT
[mA]
V
IN
[V]
200
150
100
50
+25°C
Ta = +85°C
10 20 30 40 500
250
0
I
OUT
[mA]
V
IN
[V]
200
150
100
50
+25°C
Ta = +85°C
*1. When mounted on board
[Mounted board]
(1) Board size: 50 mm × 50 mm × t1.6 mm
(2) Board material: Glass epoxy resin (two layers)
(3) Wiring ratio: Surface approx. 75%, reverse side approx. 90%
(4) Hole: Diameter 0.5 mm × 24 pieces
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
22
11. Ripple rejection (Ta = +25°C)
11. 1 VOUT = 2.0 V
VIN = 13.5 V, CL = 0.1 μF
11. 2 VOUT = 5.0 V
VIN = 13.5 V, CL = 0.1 μF
100 1k 10k
Ripple Rejection [dB]
Frequency [Hz]
10 1M
0
80
100k
70
60
50
40
30
20
10
I
OUT
= 1 mA
30 mA
100 mA
100 1k 10k
Ripple Rejection [dB]
Frequency [Hz]
10 1M
0
70
100k
60
50
40
30
20
10
I
OUT
= 1 mA
30 mA
100 mA
11. 3 VOUT = 12.0 V
VIN = 13.5 V, CL = 0.1 μF
100 1k 10k
Ripple Rejection [dB]
Frequency [Hz]
10 1M
0
60
100k
50
40
30
20
10
I
OUT
= 1 mA
30 mA
100 mA
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 23
Reference Data
1. Characteristics of input transient response (Ta = +25°C)
1. 1 VOUT = 2.0 V
I
OUT
= 30 mA, C
IN
= 0.1
μ
F, V
IN
= 11.5 V
↔
13.5 V, tr = tf = 5.0
μ
s
1. 2 VOUT = 5.0 V
I
OUT
= 30 mA, C
IN
= 0.1
μ
F, V
IN
= 11.5 V
↔
13.5 V, tr = tf = 5.0
μ
s
0 200
V
OUT
[V]
t [μs]
−200 600
400 800 1000 1200
V
IN
[V]
2.5
2.4
2.3
2.2
2.1
2.0
1.9
14
13
12
11
10
9
8
C
L
= 10 μF
22 μF
VIN
VOUT
0 200
V
OUT
[V]
t [μs]
−200 600
400 800 1000 1200
V
IN
[V]
6.0
5.8
5.6
5.4
5.2
5.0
4.8
14
13
12
11
10
9
8
C
L
= 10 μF
22 μF
VIN
VOUT
1. 3 VOUT = 12.0 V
I
OUT
= 30 mA, C
IN
= 0.1
μ
F, V
IN
= 11.5 V
↔
13.5 V, tr = tf = 5.0
μ
s
0 200
V
OUT
[V]
t [μs]
−200 600
400 800 1000 1200
V
IN
[V]
13.2
11.8
16
9
15
14
13
12
11
10
13.0
12.8
12.6
12.4
12.2
12.0
C
L
= 10 μF
22 μF
VIN
VOUT
2. Characteristics of load transient response (Ta = +25°C)
2. 1 VOUT = 2.0 V
VIN = 13.5 V, CIN = 0.1 μF, IOUT = 50 mA ↔ 100 mA
2. 2 VOUT = 5.0 V
VIN = 13.5 V, CIN = 0.1 μF, IOUT = 50 mA ↔ 100 mA
0 200
V
OUT
[V]
t [μs]
−200 600
400 800 1000 1200
I
OUT
[mA]
2.4 150
100
50
0
−50
−100
−150
2.3
2.2
2.1
2.0
1.9
1.8
C
L
= 10 μF
22 μF
V
OUT
I
OUT
0 200
V
OUT
[V]
t [μs]
−200 600
400 800 1000 1200
I
OUT
[mA]
5.8 150
100
50
0
−50
−100
−150
5.6
5.4
5.2
5.0
4.8
4.6
C
L
= 10 μF
22 μF
V
OUT
I
OUT
2. 3 VOUT = 12.0 V
VIN = 13.5 V, CIN = 0.1 μF, IOUT = 50 mA ↔ 100 mA
0 200
V
OUT
[V]
t [μs]
−200 600
400 800 1000 1200
14.0 150
100
50
0
−50
−100
−150
13.5
13.0
12.5
12.0
11.5
11.0
I
OUT
[mA]
C
L
= 22 μF
10 μF
V
OUT
I
OUT
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
24
3. Transient response characteristics of ON / OFF pin (Ta = +25°C)
3. 1 VOUT = 3.3 V
VIN = 13.5 V, CL = 10 μF, CIN = 0.1 μF,
IOUT = 100 mA, VON / OFF = 0 V → 13.5 V
3. 2 VOUT = 5.0 V
VIN = 13.5 V, CL = 10 μF, CIN = 0.1 μF,
IOUT = 100 mA, VON / OFF = 0 V → 13.5 V
V
OUT
[V]
6
0
9
3
12
15
−3
6
0
−6
−12
12
18
V
ON/OFF
[V]
−18
t [μs]
0 500−500 1000 1500 2000
V
OUT
V
ON/OFF
V
OUT
[V]
V
ON/OFF
[V]
t [μs]
0 500−500 1000 1500 2000
6
0
9
3
12
15
−3
6
0
−6
−12
12
18
−18
V
OUT
V
ON/OFF
4. Load transient response characteristics dependent on capacitance (Ta = +25°C)
4. 1 VOUT = 5.0 V
VIN = 13.5 V, CIN = 0.1 μF, IOUT = 50 mA → 100 mA
VIN = 13.5 V, CIN = 0.1 μF, IOUT = 100 mA → 50 mA
20 40 60 80 1000
0.5
0
Undershoot [V]
C
L
[μF]
0.4
0.3
0.2
0.1
20 40 60 80 1000
0.5
0
Overshoot [V]
C
L
[μF]
0.4
0.3
0.2
0.1
5. Input transient response characteristics dependent on capacitance (Ta = +25°C)
5. 1 VOUT = 5.0 V
V
IN
= 7.0 V → 12.0 V, tr = 5.0
μ
s, C
IN
= 0.1
μ
F, I
OUT
= 30 mA
V
IN
= 12.0 V → 7.0 V, tr = 5.0
μ
s, C
IN
= 0.1
μ
F, I
OUT
= 30 mA
20 40 60 80 1000
0.7
0
Overshoot [V]
C
L
[μF]
0.6
0.5
0.4
0.3
0.2
0.1
20 40 60 80 1000
0.7
0
Undershoot [V]
C
L
[μF]
0.6
0.5
0.4
0.3
0.2
0.1
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.3.0_00 S-1142 Series
Seiko Instruments Inc. 25
6. Example of equivalent series resistance vs. Output current characteristics (Ta = +25°C)
100
0.1 200
IOUT [mA]
RESR [Ω]
CIN = CL = 0.1
μ
F
0
Stable
C
IN
VIN
VSS
C
L*1
R
ESR
S-1142
Series
VOUT
ON / OFF
*1. CL: TDK Corporation C3216X8R2A104K (0.1 μF)
Figure 13 Figure 14
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series Rev.3.0_00
Seiko Instruments Inc.
26
Marking Specification
1. HSOP-6
(1) to (5): Product name: S1142 (Fixed)
(6): Product type
(7), (8): Value of output voltage
(9): Operating temperature
(10) to (16): Lot number
(1) (2) (3) (4)
(7) (8) (9)
(10)
(
13
) (
14
)
(5) (6)
(11) (12)
(15)
(
16
)
Top view
654
123
No. FH006-A-P-SD-2.0
No.
TITLE
SCALE
UNIT mm
HSOP6-A-PKG Dimensions
Seiko Instruments Inc.
FH006-A-P-SD-2.0
0.4±0.05
1.91
5.02±0.2
13
64
1.91
1.67±0.05
5
20.20±0.05
No.
TITLE
SCALE
UNIT mm
4
6
1
3
ø2.0±0.05
ø1.55±0.05 0.3±0.05
2.1±0.1
8.0±0.1
5°max.
6.7±0.1
2.0±0.05
Seiko Instruments Inc.
Feed direction
4.0±0.1(10 pitches:40.0±0.2)
HSOP6-A-Carrier Tape
FH006-A-C-SD-1.0
No. FH006-A-C-SD-1.0
No.
TITLE
SCALE
UNIT mm
QTY. 2,000
2±0.5
13.5±0.5
60°
2±0.5
ø13±0.2
ø21±0.8
Seiko Instruments Inc.
Enlarged drawing in the central part
HSOP6-A-Reel
No. FH006-A-R-SD-1.0
FH006-A-R-SD-1.0
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
HSOP6-A-Land Recommendation
No. FH006-A-L-SD-2.0
FH006-A-L-SD-2.0
0.76
1.91 1.91
2.03
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• 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
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• 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 appropriate governmental authority.
• Use of the information described herein for other purposes and/or reproduction or copying without the
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installed in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc.
• 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 community damage that may ensue.
