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PDF S-1142A Datasheet ( Hoja de datos )

Número de pieza S-1142A
Descripción OPERATION CMOS VOLTAGE REGULATOR
Fabricantes Seiko Instruments 
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S-1142A Hoja de datos, Descripción, Manual
S-1142A/BxxH Series
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION
www.sii-ic.com
LOW DROPOUT 105°C OPERATION CMOS VOLTAGE REGULATOR
© SII Semiconductor Corporation, 2012-2014
Rev.2.2_01
The S-1142A/BxxH Series, developed by using high-withstand voltage CMOS technology, is a positive voltage regulator
with a high-withstand voltage, low current consumption, and high-accuracy output voltage.
The S-1142A/BxxH 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 protection circuit 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.
Caution Before using the product in automobile control unit or medical equipment, contact to SII
Semiconductor Corporation is indispensable.
Features
Output voltage:
Input voltage:
Output voltage accuracy:
Current consumption:
Output current:
Input and output capacitors:
Built-in overcurrent protection circuit:
Built-in thermal shutdown circuit:
Built-in ON / OFF circuit:
Operation temperature range:
Lead-free (Sn 100%), halogen-free
2.0 V to 15.0 V, selectable in 0.1 V step
3.0 V to 50 V
±1.0% (Tj = +25°C)
±3.0% (Tj = 40°C to +105°C)
During operation: 4.0 μA typ., 9.0 μA max. (Ta = 40°C to +105°C)
During power-off: 0.1 μA typ., 2.5 μA max. (Ta = 40°C to +105°C)
Possible to output 200 mA (VIN VOUT(S) + 2.0 V)*1
A ceramic capacitor of 0.1 μF or more can be used.
Limits overcurrent of output transistor.
Prevents damage caused by heat.
Ensures long battery life.
Ta = 40°C to +105°C
*1. Attention should be paid to the power dissipation of the package when the output current is large.
Applications
Constant-voltage power supply for electrical application for vehicle interior
Constant-voltage power supply for home electric appliance
Package
HSOP-6
1

1 page

S-1142A pdf
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT 105°C OPERATION CMOS VOLTAGE REGULATOR
Rev.2.2_01
S-1142A/BxxH Series
Pin Configuration
1. HSOP-6
Top view
654
123
Figure 2
Table 4
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
*1. The NC pin is electrically open.
The NC pin can be connected to the VIN pin or the VSS pin.
5

5 Page

S-1142A arduino
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT 105°C OPERATION CMOS VOLTAGE REGULATOR
Rev.2.2_01
S-1142A/BxxH Series
Standard Circuit
Input
CIN*1
VIN VOUT
ON / OFF
VSS
Output
CL*2
Single GND
GND
*1. CIN is a capacitor for stabilizing the input.
*2. A 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.
Condition of Application
Input capacitor (CIN): 0.1 μF or more
Output capacitor (CL): 0.1 μF or more
Caution Generally a series regulator may cause oscillation, depending on the selection of external parts.
Confirm that no oscillation occurs in the application for which the above capacitors are used.
Selection of Input and Output Capacitors (CIN, CL)
The S-1142A/BxxH Series requires an output capacitor between the VOUT pin and the VSS pin 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.
CIN 0.1 μF
CL 0.1 μF
Caution Define the capacity values of CIN and CL by sufficient evaluation including the temperature characteristics
under the actual usage conditions.
11

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