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S-19254xxxH Series
www.ablicinc.com
© ABLIC Inc., 2016
FOR AUTOMOTIVE 105C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT
CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION
Rev.1.1_01
The S-19254xxxH Series developed by using high-withstand voltage CMOS process technology, is a positive voltage
regulator with high-accuracy output voltage and high output current.
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. Also, the S-19254xxxH Series includes the soft-start function to adjust the output voltage rising
time at power-on or at the time when the ON / OFF pin is set to ON.
Caution This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in
the purpose, contact to ABLIC Inc. is indispensable.
Features
Output voltage:
Input voltage:
Output voltage accuracy:
Dropout voltage:
Current consumption:
Output current:
Ripple rejection:
Built-in overcurrent protection circuit:
Built-in thermal shutdown circuit:
Built-in soft-start circuit:
Built-in ON / OFF circuit:
Built-in discharge shunt circuit:
Operation temperature range:
Lead-free (Sn 100%), halogen-free
AEC-Q100 qualified*2
1.0 V to 5.5 V, selectable in 0.05 V step
2.5 V to 6.5 V
3.0% (Tj = 40C to 105C)
0.38 V typ. (2.6 V output product, at IOUT = 1000 mA)
During operation: 120 A typ., 150 A max. (Tj = 40C to 105C)
During power-off: 0.1 A typ., 4.5 A max. (Tj = 40C to 105C)
Possible to output 1000 mA (at VIN VOUT(S) 1.0 V)*1
60 dB typ. (at f = 1.0 kHz)
Limits overcurrent of output transistor.
Detection temperature 170C typ.
Adjusts output voltage rising time at power-on or at the time when
ON / OFF pin is set to ON.
Adjustable type: tSS = 6.0 ms typ. (CSS = 10 nF)
Soft-start time can be changed by the capacitor (CSS).
Ensures long battery life.
Discharges the electric charge of the output capacitor during power-off.
Ta = 40°C to 105°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 (accessory, car navigation system, car audio system, etc.)
Package
HSOP-8A
1

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FOR AUTOMOTIVE 105C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION
S-19254xxxH Series
Rev.1.1_01
Block Diagram
ON / OFF logic
Pull-down resistor
: Active "H"
: Available
VIN
Discharge shunt function
Soft-start time
: Available
: Changeable by capacitor (CSS)
*1
VOUT
ON / OFF
SSC
VSS
*1. Parasitic diode
Overcurrent protection circuit
Thermal shutdown circuit
ON / OFF
circuit
Reference
voltage circuit
Soft-start
circuit
*1
Figure 1
*1
2

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FOR AUTOMOTIVE 105C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION
Rev.1.1_01
S-19254xxxH Series
AEC-Q100 Qualified
This IC supports AEC-Q100 for operation temperature grade 2.
Contact our sales office for details of AEC-Q100 reliability specification.
Product Name Structure
Users can select the output voltage for the S-19254xxxH Series. Refer to "1. Product name" regarding the contents
of product name, "2. Package" regarding the package drawings and "3. Product name list" for details of product
names.
1. Product name
S-19254 x xx H - E8T1 U
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package abbreviation and IC packing specifications*1
E8T1: HSOP-8A, Tape
Operation temperature
H: Ta = 40°C to 105°C
Output voltage*2
10 to 55
(e.g., when the output voltage is 1.0 V, it is expressed as 10.)
Product type
E
*1. Refer to the tape drawing.
*2. Contact our sales office when the product which has 0.05 V step is necessary.
2. Package
Package Name
HSOP-8A
Table 1
Dimension
FH008-A-P-SD
Package Drawing Codes
Tape
FH008-A-C-SD
Reel
FH008-A-R-SD
Land
FH008-A-L-SD
4. Product name list
Remark
Table 2
Output Voltage
HSOP-8A
1.2 V 3.0%
S-19254E12H-E8T1U
1.8 V 3.0%
3.3 V 3.0%
S-19254E18H-E8T1U
S-19254E33H-E8T1U
5.0 V 3.0%
S-19254E50H-E8T1U
Please contact our sales office for products with specifications other than the above output voltage.
3

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FOR AUTOMOTIVE 105C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION
S-19254xxxH Series
Rev.1.1_01
Pin Configuration
1. HSOP-8A
Top view
1
2
3
4
8
7
6
5
Bottom view
81
72
63
54
*1
Pin No.
1
2
3
4
5
6
7
8
Symbol
VOUT
NC*2
VSS
ON / OFF
SSC*3
NC*2
NC*2
VIN
Table 3
Description
Output voltage pin
No connection
GND pin
ON / OFF pin
Soft-start pin
No connection
No connection
Input voltage pin
Figure 2
*1. Connect the heat sink of backside at shadowed area to the board, and set electric potential open or GND.
However, do not use it as the function of electrode.
*2. The NC pin is electrically open.
The NC pin can be connected to the VIN pin or the VSS pin.
*3. Connect a capacitor between the SSC pin and the VSS pin.
The soft-start time at power-on and at the time when the ON / OFF pin is set to ON can be adjusted according to
the capacitance.
4

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FOR AUTOMOTIVE 105C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION
Rev.1.1_01
S-19254xxxH Series
Absolute Maximum Ratings
Table 4
(Ta = 25°C unless otherwise specified)
Item
Symbol
Absolute Maximum Rating
Unit
VIN
VSS0.3 to VSS7
V
Input voltage
VON / OFF
VSS0.3 to VIN0.3 VSS 7
V
Output voltage
VSSC
VOUT
VSS0.3 to VIN0.3 VSS 7
VSS0.3 to VIN0.3 VSS 7
V
V
Output current
IOUT
1100
mA
Junction temperature
Tj
40 to150
C
Operation ambient temperature Topr
40 to105
C
Storage temperature
Tstg
40 to150
C
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.
Thermal Resistance Value
Table 5
Item
Symbol
Condition
Board A
Junction-to-ambient thermal resistance*1 JA
HSOP-8A
Board B
Board C
Board D
Board E
*1. Test environment: compliance with JEDEC STANDARD JESD51-2A
Remark Refer to "Power Dissipation" and "Test Board" for details.
Min. Typ. Max. Unit
 104
 C/W
 74
 39
 C/W
 C/W
 37
 C/W
 31
 C/W
5