SSP7903
Current 1A High Voltage 40V Low Power LDO
SSP7903
General Description
The SSP7903 series is a group of positive voltage output, three-pin regulators, that provide a
high current even when the input/output voltage differential is small. Low power consumption and
high accuracy is achieved through CMOS and laser trimming technologies.
The SSP7903 consists of a high-precision voltage reference, an error amplification circuit, and a
current limited output driver. Transient response to load variations have improved in comparison
to the existing series.
Features
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Low Quiescent Current: typical 1.6μA
Temperature Stability: ±50ppm/℃
High input voltage: 40V
Output voltage accuracy: tolerance ±2%
Low temperature coefficient
Dropout Voltage: 20mV@IOUT=10mA
Maximum Output Current: 1A
The chip has the functions of overheat protection, over current protection and output short
circuit protection
Packages:SOT89-3L,SOT223 and TO252
Applications
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Industrial control
Smart meters, instruments and meters
Battery supply set
Wireless communication equipment
Automotive electronics
Shanghai Siproin Microelectronics Co.,Ltd.
V1.6
Page 1 of 11
SSP7903
Order information
Product model
Package
Manner of packing
SSP7903PxxPx
SOT89-3L
SSP7903PxxPBx
SOT89-3L(B)
SSP7903PxxFx
SOT223
SSP7903PxxFBx
SOT223(B)
SSP7903PxxJx
TO252
Minimum packing
quantity
1000
1000
Reel
2500
2500
Tube
2500
Selection Guide Table
SSP7903P①②③④
Designator
Symbol
Description
Remarks
①②
Integer
Output Voltage(3.0V~12.0V)
For example, if the output voltage
is 5.0V, ①② will be 50.
P
Package:SOT89-3L
PB
Package:SOT89-3L(B)
F
Package:SOT223
FB
Package:SOT223(B)
J
Package: TO252
R
RoHS / Pb Free
G
Halogen Free
③
④
The encapsulated pin definition is
described in the pin assignment
below.
Note:”①②” stands for output voltages. The regular output voltage is 3V, 3.3V, 3.6V, 4.0V, 5.0V,
12V. Other voltages can be specially customized.
Functional Block Diagram
Shanghai Siproin Microelectronics Co.,Ltd.
V1.6
Page 2 of 11
SSP7903
Pin Assignment (TOP VIEW)
SSP7903PxxPx
NO.
Description
1
GND
2
VIN
3
VOUT
MARK
03Pxx YWH
SSP7903PxxPBx
NO.
Description
1
VOUT
2
GND
3
VIN
MARK
03PBxx YWH
SSP7903PxxFx
NO.
Description
1
GND
2
VOUT
3
VIN
MARK
Shanghai Siproin Microelectronics Co.,Ltd.
03Fxx YWH
V1.6
Page 3 of 11
SSP7903
SSP7903PxxFBx
NO.
Description
1
VOUT
2
GND
3
VIN
MARK
03FBxx YWH
SSP7903PxxJx
NO.
Description
1
VIN
2
GND
3
VOUT
MARK
03Jxx YWH
Note: xx:Output Voltage,”33”stands for 3.3V
Y: The Year of manufacturing,”1” stands for year 2021;
W: The week of manufacturing. ”20” stands for week 20;
H: Factory Code;
Application Circuits
Shanghai Siproin Microelectronics Co.,Ltd.
V1.6
Page 4 of 11
SSP7903
Absolute Maximum Ratings
(Unless otherwise indicated: Ta=25℃)
PARAMETER
SYMBOL
MIN
MAX
Input Voltage
VIN
-0.3
40
Output Voltage
VOUT
Vss-0.3
VIN+0.3V
V
SOT 89 1000
TO 252 1800
SOT 223
1500
PD(1)
Power Dissipation
UNITS
Operating Ambient
Temperature
Topr
-40
85
Storage Temperature
Tstg
-40
125
ESD Protection
ESD HBM
mW
℃
2000
V
Note:These are just the limit parameters.Beyond the range specified in the Absolute Maximum
Ratings may cause serious damage to the equipment.Long exposure to extreme conditions may
affect the reliability of the device.
(1)Increasing the welding area of package is beneficial to increase power consumption
Electrical Characteristics
SSP7903 Series (Unless otherwise indicated:Ta=25℃)
PARAMETER
SYMBOL
CONDITIONS
Output Voltage1
VOUT(S)
VIN= VOUT(S)+2V,IOUT=10mA
VOUT(S)
VOUT(S)
VOUT(S)
x0.98
x1.02
Dropout Voltage2
VDROP
IOUT=1mA
4
8
IOUT=1A
1000
1500
Line Regulation
VOUT
VIN VOUT
0.01
0.02
Load Regulation
∆VOUT2
Temperature Stability
VOUT
Ta
Quiescent Current
Iq
Input Voltage
VIN
Maximum Output
Current
Current Limit3
Short Circuit Current
PowerSupply
Rejection Ratio
Over Temperature
Protection
MIN
VOUT(S)+2V≤VIN≤40V
IOUT =1mA
TYP MAX UNIT
VIN=VOUT(S)+2V
VOUT(S)≤10V
20
80
1mA≤IOUT≤300mA
VOUT(S)>10V
85
150
VIN = VOUT(S)+2V,IOUT=10mA
-40℃≤Ta≤85℃
no load
±50
0.8
1.6
2
VOUT(S)≥5.0V
1.5
3
3.6
2.2
IOUTMAX
mV
%/V
mV
ppm/℃
VOUT(S)
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