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S-1142B Schematic ( PDF Datasheet ) - Seiko Instruments

Teilenummer S-1142B
Beschreibung OPERATION CMOS VOLTAGE REGULATOR
Hersteller Seiko Instruments
Logo Seiko Instruments Logo 




Gesamt 30 Seiten
S-1142B Datasheet, Funktion
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






S-1142B Datasheet, Funktion
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT 105°C OPERATION CMOS VOLTAGE REGULATOR
S-1142A/BxxH Series
Rev.2.2_01
Absolute Maximum Ratings
Table 5
(Ta = +25°C unless otherwise specified)
Item
Symbol
Absolute Maximum Rating
Unit
Input voltage
VIN
VON / OFF
VSS 0.3 to VSS + 60
VSS 0.3 to VIN + 0.3
V
V
Output voltage
VOUT
VSS 0.3 to VIN + 0.3
V
Power dissipation
PD
1900*1
mW
Junction temperature
Tj
40 to +125
°C
Operation ambient temperature Topr
40 to +105
°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.
2400
2000
1600
1200
800
400
0
0 50 100 150
Ambient temperature (Ta) [°C]
Figure 3 Power Dissipation of Package (When Mounted on Board)
Condition
HSOP-6 (When mounted on board)
Table 6
Power Dissipation
1900 mW
Thermal Resistance Value (θj a)
53°C/W
6

6 Page









S-1142B pdf, datenblatt
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT 105°C OPERATION CMOS VOLTAGE REGULATOR
S-1142A/BxxH Series
Rev.2.2_01
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 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) + 2.0 V.
Vdrop = VIN1 (VOUT3 × 0.98)
12

12 Page





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