Texas Instruments Evaluation Board for the LP3878-ADJ LP3878-ADJEVAL/NOPB LP3878-ADJEVAL/NOPB Datenbogen
Produktcode
LP3878-ADJEVAL/NOPB
SNVS311B – MAY 2005 – REVISED APRIL 2013
Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C, and limits in boldface type apply over the temperature range of -40°C to
125°C. Limits are specified through design, testing, or correlation. The limits are used to calculate TI's Average Outgoing
Quality Level (AOQL). Unless otherwise specified: V
Quality Level (AOQL). Unless otherwise specified: V
IN
= 3.0V, V
OUT
= 1V, I
L
= 1 mA, C
OUT
= 10 µF, C
IN
= 4.7 µF, V
S/D
= 2V,
C
BYPASS
= 10 nF.
Symbol
Parameter
Conditions
Min
Typical
Max
Units
V
ADJ
Adjust Pin Voltage
0.99
1.00
1.01
V
1 mA
≤
I
L
≤
800 mA
0.98
1.02
1.00
3.0V
≤
V
IN
≤
6V
0.97
1.03
Output Voltage Line
3.0V
≤
V
IN
≤
16V
0.014
0.007
%/V
Regulation
0.032
I
L
= 800 mA, V
OUT
≥
V
OUT(NOM)
- 1%
2.5
3.1
Minimum Input Voltage
I
L
= 800 mA
V
IN
(min)
Required To Maintain
V
OUT
≥
V
OUT(NOM)
- 1%
2.5
2.8
V
Output Regulation
0
≤
T
J
≤
125°C
I
L
= 750 mA, V
OUT
≥
V
OUT(NOM)
- 1%
2.5
3.0
I
L
= 100 µA
1
2
3
3
Dropout Voltage
(1)
I
L
= 200 mA
150
200
V
DO
mV
V
OUT
= 3.8V
300
I
L
= 800 mA
475
600
1100
I
GND
Ground Pin Current
I
L
= 100 µA
200
180
µA
225
I
L
= 200 mA
2
1.5
3.5
mA
I
L
= 800 mA
8.5
5.5
15
I
O
(PK)
Peak Output Current
V
OUT
≥
V
OUT(NOM)
−
5%
1200
mA
I
O
(MAX)
Short Circuit Current
R
L
= 0 (Steady State)
1300
e
n
Output Noise Voltage
BW = 100 Hz to 100 kHz
18
µV(RMS)
(RMS)
C
BYPASS
= 10 nF
Ripple Rejection
f = 1 kHz
60
dB
I
ADJ
ADJ Pin Bias Current
I
L
= 800 mA
200
nA
(Sourcing)
SHUTDOWN INPUT
V
S/D
S/D Input Voltage
V
H
= Output ON
1.4
1.6
V
L
= Output OFF, I
IN
≤
10 µA
0.04
0.20
V
V
OUT
≤
10 mV, I
IN
≤
50 µA
0.6
I
S/D
S/D Input Current
V
S/D
= 0
0.02
−
1
µA
V
S/D
= 5V
5
15
(1)
Dropout voltage spec applies only if V
IN
is sufficient so that it does not limit regulator operation.
4
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