SM74503 Datasheet, PDF (5/16 Pages) Texas Instruments – 800mA Low-Dropout Linear Regulator

Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the Texas Instruments Sales Office/
Distributors for availability and specifications.
Maximum Input Voltage (V_IN to GND)
Power Dissipation (Note 2)
Junction Temperature (T_J)
(Note 2)
Storage Temperature Range
20V
Internally Limited
150°C
-65°C to 150°C
Lead Temperature
SOT-223 (MP) Package
ESD Tolerance (Note 3)
260°C, 4 sec
2000V
Operating Ratings (Note 1)
Input Voltage (V_IN to GND)
15V
Junction Temperature Range (T_J)(Note 2)
SM74503
−40°C to 125°C
SM74503 Electrical Characteristics
Typicals and limits appearing in normal type apply for T_J = 25°C. Limits appearing in Boldface type apply over the entire junction
temperature range for operation, −40°C to 125°C.
Symbol
Parameter
Conditions
Min
(Note 5)
Typ
(Note 4)
Max
(Note 5)
Units
V_OUT Output Voltage
ΔV_OUT Line Regulation
(Note 6)
ΔV_OUT Load Regulation
(Note 6)
V_IN-V _OUT Dropout Voltage
(Note 7)
I_LIMIT
Current Limit
Quiescent Current
Thermal Regulation
Ripple Regulation
Temperature Stability
SM74503-3.3
I_OUT = 10mA, V_IN = 5V, T_J = 25°C
0 ≤ I_OUT ≤ 800mA, 4.75V ≤ V_IN ≤ 10V
SM74503-5.0
I_OUT = 10mA, V_IN = 7V, T_J = 25°C
0 ≤ I_OUT ≤ 800mA, 6.5V ≤ V_IN ≤ 12V
SM74503-3.3
I_OUT = 0mA, 4.75V ≤ V_IN ≤ 15V
SM74503-5.0
I_OUT = 0mA, 6.5V ≤ V_IN ≤ 15V
SM74503-3.3
V_IN = 4.75V, 0 ≤ I_OUT ≤ 800mA
SM74503-5.0
V_IN = 6.5V, 0 ≤ I_OUT ≤ 800mA
I_OUT = 100mA
I_OUT = 500mA
I_OUT = 800mA
V_IN-V_OUT = 5V, T_J = 25°C
SM74503-3.3
V_IN ≤ 15V
SM74503-5.0
V_IN ≤ 15V
T_A = 25°C, 30ms Pulse
f_RIPPLE =1 20Hz, V_IN-V_OUT = 3V V_RIPPLE =
1V_PP
 
3.267
3.168
 
4.950
4.800
800
60
 
3.300
3.300
 
5.000
5.000
 
1
 
1
 
1
 
1
1.10
1.15
1.20
1200
 
5
 
5
0.01
75
0.5
 
3.333
3.432
 
5.050
5.200
 
10
 
15
 
15
 
20
1.30
1.35
1.40
1500
 
15
 
15
0.1
 
V
V
 
V
V
 
mV
 
mV
 
mV
 
mV
V
V
V
mA
 
mA
 
mA
%/W
dB
%
Long Term Stability
RMS Output Noise
Thermal Resistance
Junction-to-Case
T_A = 125°C, 1000Hrs
(% of V_OUT), 10Hz ≤ f ≤10kHz
4-Lead SOT-223
3-Lead TO-252
0.3
0.003
15.0
10
%
%
°C/W
°C/W
Thermal Resistance
Junction-to-Ambient
No air flow)
4-Lead SOT-223 (No heat sink)
3-Lead TO-252 (No heat sink)(Note 8)
136
°C/W
92
°C/W
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: The maximum power dissipation is a function of T_J(max) , θ_JA, and T_A. The maximum allowable power dissipation at any ambient temperature is
P_D = (T_J(max)–T_A)/θ_JA. All numbers apply for packages soldered directly into a PC board.
Note 3: For testing purposes, ESD was applied using human body model, 1.5kΩ in series with 100pF.
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