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Número de pieza | S-19212 | |
Descripción | CMOS VOLTAGE REGULATOR | |
Fabricantes | Seiko | |
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www.sii-ic.com
© Seiko Instruments Inc., 2015
FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE LOW DROPOUT
CMOS VOLTAGE REGULATOR
Rev.1.0_01
The S-19212 Series, developed by using high-withstand voltage CMOS process technology, is a positive voltage regulator
with a high-withstand voltage, low current consumption and high-accuracy output voltage, and has a built-in ON / OFF
circuit.
The S-19212 Series operates at the maximum operation voltage of 36 V and a low current consumption of 6.5 μA typ., and
has a built-in low on-resistance transistor which provides a very small dropout voltage and a large output current.
Also, a built-in overcurrent protection circuit to limit overcurrent of the output transistor and a built-in thermal shutdown
circuit to limit heat are included.
Caution This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in
the purpose, contact to SII is indispensable.
Features
• Output voltage:
• Input voltage:
• Output voltage accuracy:
• Current consumption:
• Output current:
• Input capacitor:
• Output capacitor:
• Built-in overcurrent protection circuit:
• Built-in thermal shutdown circuit:
• Built-in ON / OFF circuit:
• Built-in discharge shunt circuit:
• Operation temperature range:
• Lead-free (Sn 100%), halogen-free
• AEC-Q100 in process*2
2.5 V to 16.0 V, selectable in 0.1 V step
3.0 V to 36 V
±2.0% (Tj = −40°C to +125°C)
During operation: 6.5 μA typ., 8.5 μA max. (Tj = −40°C to +125°C)
During power-off: 0.1 μA typ., 3.5 μA max. (Tj = −40°C to +125°C)
Possible to output 250 mA (at VIN ≥ VOUT(S) + 2.0 V)*1
A ceramic capacitor can be used. (1.0 μF or more)
A ceramic capacitor can be used. (1.0 μF to 100 μF)
Limits overcurrent of output transistor.
Detection temperature 165°C typ.
Ensures long battery life.
Discharges the electric charge of the output capacitor during power-off.
(RLOW = 70 kΩ typ.)
Ta = −40°C to +125°C
*1. Please make sure that the loss of the IC will not exceed the power dissipation when the output current is large.
*2. Contact our sales office for details.
Applications
• Constant-voltage power supply for electrical application for vehicle interior
• Constant-voltage power supply for home electric appliance
• For automotive use (engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.)
Packages
• HSOP-8A
• HSOP-6
• SOT-89-5
• SOT-23-5
Seiko Instruments Inc.
1
1 page FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.1.0_01
S-19212 Series
Pin Configurations
1. HSOP-8A
Top view
18
27
36
45
Bottom view
81
72
63
54
*1
Table 3
Pin No.
Symbol
Description
1
VOUT
Output voltage pin
2 NC*1
No connection
3 NC*1
No connection
4
ON / OFF
ON / OFF pin
5 VSS
6 NC*1
7 NC*1
GND pin
No connection
No connection
8 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.
*1. Connect the heat sink of backside
at shadowed area to the board,
and set electric potential GND.
However, do not use it as the
function of electrode.
Figure 2
2. HSOP-6
Top view
654
123
Figure 3
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.
Seiko Instruments Inc.
5
5 Page FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.1.0_01
S-19212 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. CL is a capacitor for stabilizing the output.
Figure 12
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): A ceramic capacitor with capacitance of 1.0 μF or more is recommended.
Output capacitor (CL): A ceramic capacitor with capacitance of 1.0 μF to 100 μF is recommended.
Caution Generally, in a voltage regulator, an oscillation may occur depending on the selection of the external
parts. Perform thorough evaluation including the temperature characteristics with an actual
application using the above capacitors to confirm no oscillation occurs.
Selection of Input Capacitor (CIN) and Output Capacitor (CL)
The S-19212 Series requires CL between the VOUT pin and the VSS pin for phase compensation. The operation is
stabilized by a ceramic capacitor with capacitance of 1.0 μF to 100 μF. When using an OS capacitor, a tantalum
capacitor or an aluminum electrolytic capacitor, the capacitance also must be 1.0 μF to 100 μF. However, an oscillation
may occur depending on the equivalent series resistance (ESR).
Moreover, the S-19212 Series requires CIN between the VIN pin and the VSS pin for a stable operation.
Generally, an oscillaiton may occur when a voltage regulator is used under the conditon that the impedance of the
power supply is high.
Note that the output voltage transient characteristics varies depending on the capacitance of CIN and CL and the value
of ESR.
Caution Perform thorough evaluation including the temperature characteristics with an actual application to
select CIN and CL.
Seiko Instruments Inc.
11
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet S-19212.PDF ] |
Número de pieza | Descripción | Fabricantes |
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S-19212D | CMOS VOLTAGE REGULATOR | Seiko |
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