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S-1142 Schematic ( PDF Datasheet ) - Seiko Instruments

Teilenummer S-1142
Beschreibung HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Hersteller Seiko Instruments
Logo Seiko Instruments Logo 




Gesamt 35 Seiten
S-1142 Datasheet, Funktion
Rev.1.0_03
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series
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 power-off
circuit.
An overcurrent protector prevents the load current from exceeding the
capacitance of the output transistor. 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 12.0 V, selectable in 0.1 V step
Low equivalent series resistance capacitor : Ceramic capacitor of 0.1 µF or more can be used as the I/O capacitor.
Input voltage :
3.0 V to 50 V
High-accuracy output voltage :
±1.0% (at 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)
Output current :
During shutdown: 0.1 µA typ., 1.0 µA max. (Tj = 40°C to +105°C)
200 mA (at VIN VOUT(S) + 2.0 V)*1
Built-in overcurrent protector :
limits overcurrent of output transistor
Operation temperature range :
40°C to +105°C (S-1142xxxH only)
Built-in thermal shutdown circuit :
prevents damage caused by heat
Built-in power on/off circuit :
longer battery life
Small package :
HSOP-6
Lead-free product
www.Data*S1h.eAett4teUn.ctioomn should be paid to the power dissipation of the package when the output current is large.
„ Applications
Constant-voltage power supply for electrical applications for vehicle interiors (S-1142xxxH only)
Constant-voltage power supplies for home electric appliances
„ Package
Package Name
HSOP-6
Package
FH006-A
Drawing Code
Tape
Reel
FH006-A
FH006-A
Land
FH006-A
Caution Before using this product in medical equipment or automobile equipment including car audio, keyless
entry and engine control unit, contact to SII is indispensable.
Seiko Instruments Inc.
1






S-1142 Datasheet, Funktion
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series
Rev.1.0_03
„ Absolute Maximum Ratings
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.
Table 3
(Ta = 25°C unless otherwise specified)
Parameter
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
Power dissipation
VOUT
PD
VSS 0.3 to VIN + 0.3
1900*1
V
mW
Junction temperature
Tj
40 to +125
°C
Operating ambient S-1142xxxI
temperature
S-1142xxxH
Topr
40 to +85
40 to +105
°C
°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)
2400
2000
1600
1200
www.DataSheet4U.com
800
S-1142xxxI
400
S-1142xxxH
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 4
Power Dissipation
1900 mW
Thermal Resistance Value (θj a)
53°C/W
6 Seiko Instruments Inc.

6 Page









S-1142 pdf, datenblatt
HIGH-WITHSTAND VOLTAGE LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1142 Series
„ Test Circuit
1.
VIN VOUT
ON/OFF
VSS
Set to power ON
+
A
+
V
Figure 5
2. +
A VIN
VOUT
ON/OFF
VSS
Set to VIN or GND
Figure 6
3.
www.Data4S.heet4U.com
VIN VOUT
ON/OFF
VSS
Set to power ON
Figure 7
+
A
+
V
VIN VOUT
+
A ON/OFF
VSS
+
V
RL
Rev.1.0_03
Figure 8
5.
VIN VOUT
ON/OFF
VSS
+
V RL
Set to power ON
Figure 9
12 Seiko Instruments Inc.

12 Page





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