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LP38691_15 Datasheet, PDF (5/34 Pages) Texas Instruments – LP3869x/-Q1 500-mA Low-Dropout CMOS Linear Regulators Stable With Ceramic Output Capacitors
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LP38691, LP38693, LP38691-Q1, LP38693-Q1
SNVS321N – JANUARY 2005 – REVISED MARCH 2015
7.5 Thermal Information
THERMAL METRIC(1)
LP38691
TO-252
LP38693
WSON
LP3869x
SOT-223
UNIT
RθJA (2)
RθJC(top)
RθJB
ψJT
ψJB
RθJC(bot)
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
3 PINS
50.5
52.6
29.7
4.8
29.3
1.5
6 PINS
50.6
44.4
24.9
0.4
25.1
5.4
5 PINS
68.5
52.2
13.0
5.5
12.8
n/a
°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2) Junction-to-ambient thermal resistance, High-K.
7.6 Electrical Characteristics
Unless otherwise specified, limits apply for TJ = 25°C, VIN = VOUT + 1 V, CIN = COUT = 10 µF, ILOAD = 10 mA. Minimum and
maximum limits are specified through testing, statistical correlation, or design.
PARAMETER
TEST CONDITIONS
MIN TYP(1) MAX UNIT
–2
2
VO
Output voltage tolerance
100 µA < IL < 0.5 A
VO + 1 V ≤ VIN ≤ 10 V
Full operating temperature range
–4
4 %VOUT
ΔVO/ΔVIN Output voltage line
regulation (2)
VO + 0.5 V ≤ VIN ≤ 10 V
IL = 25 mA
VO + 0.5 V ≤ VIN ≤ 10 V
IL = 25 mA
Full operating temperature range
0.03
%/V
0.1
ΔVO/ΔIL
Output voltage load
regulation (3)
1 mA < IL < 0.5 A
VIN = VO + 1 V
1 mA < IL < 0.5 A
VIN = VO + 1 V
Full operating temperature range
1.8
%/A
5
(VO = 2.5 V)
(VO = 2.5 V)
Full operating temperature
range
IL = 0.1 A
IL = 0.5 A
IL = 0.1 A
IL = 0.5 A
80
430
145
725
VIN – VOUT Dropout voltage(4)
(VO = 3.3 V)
(VO = 3.3 V)
Full operating temperature
range
IL = 0.1 A
IL = 0.5 A
IL = 0.1 A
IL = 0.5 A
65
330
110 mV
550
(VO = 5 V)
(VO = 5 V)
Full operating temperature
range
IL = 0.1 A
IL = 0.5 A
IL = 0.1 A
IL = 0.5 A
45
250
100
450
(1) Typical numbers represent the most likely parametric norm for 25°C operation.
(2) Output voltage line regulation is defined as the change in output voltage from nominal value resulting from a change in input voltage.
(3) Output voltage load regulation is defined as the change in output voltage from nominal value as the load current increases from 1 mA to
full load.
(4) Dropout voltage is defined as the minimum input to output differential required to maintain the output within 100 mV of nominal value.
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