L1803G-SH2-R Datasheet, PDF (4/6 Pages) Unisonic Technologies – Programmable soft-start provides linear voltage startup

L1803
Preliminary
LINEAR INTEGRATED CIRCUIT
 ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage Range
Enable Voltage Range
V_IN, V_VCC
-0.3~+6
V
V_EN
-0.3~+6
V
Power-Good Voltage Range
Soft-Start Voltage Range
V_PG
-0.3~+6
V
V_SS
-0.3~+6
V
Feedback Voltage Range
Output Voltage Range
V_FB
-0.3~+6
V
V_OUT
-0.3~V_IN +0.3
V
Maximum Output Current
Junction Temperature
I_OUT
Internally Limited
T_J
-40~+150
°C
Storage Temperature
T_STG
-65~+150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
 RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
MIN
Input Voltage (Note)
V_IN
1.0
Bias Voltage
V_VCC
2.7
Output Current
I_OUT
0
Operating Ambient Temperature
T_A
-40
Note: At V_IN =1V, the maximum load currents may be lower than 1.5A.
TYP
MAX
5.5
5.5
1.5
85
UNIT
V
V
A
°C
 THERMAL RESISTANCES CHARACTERISTICS
PARAMETER
SYMBOL
Junction to Ambient
HSOP-8
DFN-10(3×3)
θ_JA
Note: The PCB area is 4 times larger than that of IC’s
 ELECTRICAL CHARACTERISTICS
RATINGS
150
72 (Note )
UNIT
°C/W
°C/W
At V_EN=1.1V, V_IN=V_OUT+0.5V, C_VCC=0.1uF, C_IN=C_OUT=10uF, I_OUT=50mA, V_VCC=5.0V, and T_A=-40°C~+85°C, unless
otherwise noted. Typical values are at T_A=+25°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Input Voltage Range
Bias Pin Voltage Range (Note 2)
V_IN
V_VCC
V_OUT+V_DO
2.7
5.5
V
5.5
V
Internal Reference (Adj.)
Output Voltage Range
Accuracy (Note 2)
Line Regulation
V_REF
T_A=+25°C
V_IN=5V, I_OUT=1.5A
V_OUT
3V≤V_VCC≤5.5V,
50mA≤I_OUT≤1.5A
∆V_OUT / ∆V_IN
/ V_OUT
V_{OUT (NOM)}+0.5≤V_IN, 　5.5V
0.792
0.8
-2
0.8 0.808 V
3.3
V
±0.5
2
%
0.02
%/V
Load Regulation
Dropout Voltage (Note 3)
∆V_OUT / V_OUT
/ ∆I_OUT
50mA≤I_OUT≤1.5A
I_OUT=1.5A,
V_DO
V_VCC-V_OUT(NOM)≥3.25V
0.08
%/V
150 270 mV
Current Limit
I_OUT=1.5A, V_IN=V_VCC
I_CL
V_OUT=80%xV_{OUT (NOM)}
1.5
1.7
V
2
3
4
A
Short-Circuit Current
Bias Pin Current
I_SHORT
I_VCC
V_OUT<0.2V
0.6
1.1
A
1
2
mA
Shutdown Supply Current (I_GND)
Feedback Pin Current
I_SHDN
I_FB
V_EN≤0.4V
70
100
µA
-1
0.1
1
µA
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R102-058.c