Datasheet
Table Of Contents
- FEATURES
- Applications
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- RECOMMENDED OPERATING CONDITIONS
- ELECTRICAL CHARACTERISTICS — LP3875-ADJ
- TYPICAL PERFORMANCE CHARACTERISTICS
- Application Hints
- SETTING THE OUTPUT VOLTAGE
- TURN-ON CHARACTERISTICS FOR OUTPUT VOLTAGES PROGRAMMED TO 2.0V OR BELOW
- EXTERNAL CAPACITORS
- CFF (Feed Forward Capacitor)
- SELECTING A CAPACITOR
- CAPACITOR CHARACTERISTICS
- PCB LAYOUT
- RFI/EMI SUSCEPTIBILITY
- OUTPUT NOISE
- SHORT-CIRCUIT PROTECTION
- SHUTDOWN OPERATION
- DROPOUT VOLTAGE
- REVERSE CURRENT PATH
- POWER DISSIPATION/HEATSINKING
- HEATSINKING TO-220 PACKAGE
- HEATSINKING DDPAK/TO-263 PACKAGE
- HEATSINKING SOT-223-5 PACKAGE
- Application Hints
- REVISION HISTORY
-40 -20 0 20 40 60 80 100 125
JUNCTION TEMPERATURE (
o
C)
0
0.5
1
1.5
2
2.5
3
'V
OUT
/V CHANGE IN V
IN
(mV)
FREQUENCY (Hz)
0.000
0.500
1.000
1.500
2.000
2.500
3.000
100 1k 10k 100k
IL = 100mA
C
IN
= C
OUT
= 10PF
NOISE (PV/
Hz
(
-40 -20 0 20 40 60 80 100 125
JUNCTION TEMPERATURE (
o
C)
0
0.5
1
1.5
2
2.5
3
DC LOAD REGULATION (mV/A)
SHUTDOWN I
Q
(PA)
TEMPERATURE (
o
C)
-40 -20 0 20 40 60 80 100 125
0.001
0.01
0.1
1
10
1.8 2.3 2.8 3.3 3.8 4.3 4.8
OUTPUT VOLTAGE (V)
0
1
2
3
4
5
6
GROUND PIN CURRENT (mA)_
0 0.5
1
1.5
0
100
200
300
400
500
600
OUTPUT LOAD CURRENT (A)
DROPOUT VOLTAGE (mV)
25
o
C
-40
o
C
125
o
C
LP3875-ADJ
www.ti.com
SNVS247D –SEPTEMBER 2003–REVISED APRIL 2013
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise specified: T
J
= 25°C, C
OUT
= 10µF, C
IN
= 10µF, S/D pin is tied to V
IN
, V
OUT
= 2.5V, V
IN
= V
O(NOM)
+ 1V, I
L
=
10mA
Ground Curren vs Output Voltage
Dropout Voltage vs Output Load Current I
L
= 1.5A
Figure 5. Figure 6.
Shutdown I
Q
vs Junction Temperature DC Load Reg. vs Junction Temperature
Figure 7. Figure 8.
DC Line Regulation vs Temperature Noise vs Frequency
Figure 9. Figure 10.
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Product Folder Links: LP3875-ADJ