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PDF ( 数据手册 , 数据表 ) S-1142B

零件编号 S-1142B
描述 OPERATION CMOS VOLTAGE REGULATOR
制造商 Seiko Instruments
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S-1142B 数据手册, 描述, 功能
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
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S-1142B pdf, 数据表
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT 105°C OPERATION CMOS VOLTAGE REGULATOR
S-1142A/BxxH Series
Rev.2.2_01
Electrical Characteristics
Table 8 (1 / 2)
Item
Output voltage*1
Output current*2
Dropout voltage*3
Line regulation
Load regulation
Current
consumption
during operation
Current
consumption
during power-off
Input voltage
Symbol
VOUT(E)
IOUT
Vdrop
ΔVOUT1
ΔVIN VOUT
ΔVOUT2
ISS1
ISS2
VIN
(Tj = 40°C ~ +125°C, Ta = 40°C ~ +105°C unless otherwise specified)
Condition
Min.
Typ. Max.
Unit
Test
Circuit
VIN = 13.5 V,
IOUT = 30 mA,
40°C Tj ≤ +105°C
2.0 V VOUT(S) < 12.5 V
VOUT(S)
× 0.97
VOUT(S)
VOUT(S)
× 1.03
V
1
VIN = VOUT(S) + 1.0 V,
IOUT = 30 mA,
40°C Tj ≤ +105°C
12.5 V VOUT(S) 15.0 V
VOUT(S)
× 0.97
VOUT(S)
VOUT(S)
× 1.03
V
1
VIN VOUT(S) + 2.0 V
200*4
mA 3
2.0 V VOUT(S) < 2.2 V
1.0
V1
2.2 V VOUT(S) < 2.4 V
0.8
V1
2.4 V VOUT(S) < 2.6 V
0.6
V1
2.6 V VOUT(S) < 3.0 V
0.45
V1
IOUT = 100 mA
Ta = +25°C
3.0 V VOUT(S) < 3.5 V
3.5 V VOUT(S) < 4.0 V
0.35
0.3
V1
V1
4.0 V VOUT(S) < 5.0 V
0.27
V1
5.0 V VOUT(S) < 7.0 V
0.23
V1
7.0 V VOUT(S) < 9.0 V
0.2
V1
9.0 V VOUT(S) 15.0 V
0.18
V1
2.0 V VOUT(S) < 2.2 V
1.12
V1
2.2 V VOUT(S) < 2.4 V
1.02
V1
2.4 V VOUT(S) < 2.6 V
0.92
V1
2.6 V VOUT(S) < 3.0 V
0.82
V1
IOUT = 200 mA
Ta = +25°C
3.0 V VOUT(S) < 3.5 V
3.5 V VOUT(S) < 4.0 V
0.72
0.62
V1
V1
4.0 V VOUT(S) < 5.0 V
0.55
V1
5.0 V VOUT(S) < 7.0 V
0.5
V1
7.0 V VOUT(S) < 9.0 V
0.45
V1
9.0 V VOUT(S) 15.0 V
0.4
V1
VOUT(S) + 1.0 V VIN 30 V, IOUT = 30 mA
0.05 0.3 %/V 1
VIN = 13.5 V, 2.0 V VOUT(S) < 5.1 V,
0.1 mA IOUT 40 mA
VIN = 13.5 V, 5.1 V VOUT(S) < 12.1 V,
0.1 mA IOUT 40 mA
VIN = 16.0 V, 12.1 V VOUT(S) 15.0 V,
0.1 mA IOUT 40 mA
VIN = 13.5 V,
ON / OFF pin = ON, 2.0 V VOUT(S) < 12.5 V
no load
VIN = VOUT(S) + 1.0 V,
ON / OFF pin = ON,
no load
12.5 V VOUT(S) 15.0 V
VIN = 13.5 V,
ON / OFF pin = OFF, 2.0 V VOUT(S) < 12.5 V
no load
VIN = VOUT(S) + 1.0 V,
ON / OFF pin = OFF, 12.5 V VOUT(S) 15.0 V
no load
3.0
20 70
20 150
25 215
4.0 9.0
4.0 9.0
0.1 2.5
0.1 2.5
50
mV
mV
mV
μA
μA
μA
μA
V
1
1
1
2
2
2
2
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S-1142B equivalent, schematic
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT 105°C OPERATION CMOS VOLTAGE REGULATOR
S-1142A/BxxH Series
Rev.2.2_01
6. Overshoot of output voltage
Overshoot of output voltage occurs depending on the condition such as the rising speed of input voltage (VIN).
Overshoot voltage is the difference between the maximum value of output voltage generated by the fluctuation of
VIN and the actual output voltage (VOUT(E)) value.
6. 1 At normal operation
As shown in Figure 13, Vgs is the voltage difference between VIN and gate voltage of output driver.
The error amplifier controls Vgs in order to keep the output voltage constant depending on the fluctuation of VIN
and the output load.
VIN
Vref
+
Vgs
Output driver
Output voltage
Output
capacitance Output load
Figure 13 Circuit Diagram
6. 2 Occurrence of overshoot
If VIN voltage rises at a fast speed, Vgs may become large when gate voltage of output driver can not follow the
speed of VIN. When Vgs becomes large, the current supplied from output driver is increased transiently. Thereby,
output voltage rises, and then overshoot occurs.
Note that overshoot voltage is greatly affected by the following use conditions or temperature, etc.
When VIN rises in the range of 2.0 V to VOUT(E).
When the rising speed of VIN is fast.
When the output capacitance is small.
When the output load is small.
Input voltage (VIN)
Rising speed of VIN =
ΔV
t
VIN = 2.0 V to VOUT(E)
ΔV
Output voltage (VOUT(E))
VOUT(E)
VIN = 2.0 V to VOUT(E)
Overshoot voltage
Rising time (t)
Figure 14 VIN and Overshoot Voltage
Caution Under the following conditions, overshoot voltage tends to become larger especially.
When VIN rises from around 98% of VOUT(E).
When the rising speed of VIN is 10 mV/μs or more.
Remark When overshoot of the S-1142A/BxxH Series has some influences, consider to use the S-1142C/DxxH Series.
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