Datasheet

OUT
IN
V
V
'
'
OUT
IN
V
V
'
'
LP3879
SNVS396B –MAY 2006–REVISED APRIL 2013 www.ti.com
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 ensured through design, testing, or correlation. The limits are used to calculate the Average Outgoing
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
(1)
Typical
(2)
Max
(1)
Units
V
O
-1.0 1.00 1.0
Output Voltage Tolerance %V
nom
-2.0 2.0
1 mA ≤ I
L
≤ 800 mA, 3.0V ≤ V
IN
≤ 6V 1.00
-3.0 3.0
0.014
Output Voltage Line
3.0V ≤ V
IN
≤ 6V 0.007 %/V
0.032
Regulation
I
L
= 800 mA, V
OUT
≥ V
OUT(NOM)
- 1% 2.5 3.1
Minimum Input Voltage
I
L
= 800 mA, V
OUT
≥ V
OUT(NOM)
- 1%
V
IN
(min) Required To Maintain 2.5 2.8 V
0 ≤ T
J
≤ 125°C
Output Regulation
I
L
= 750 mA, V
OUT
≥ V
OUT(NOM)
- 1% 2.5 3.0
I
GND
250
I
L
= 100 µA 200 µA
275
2
Ground Pin Current I
L
= 200 mA 1.5
3.3
mA
8.5
I
L
= 800 mA 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) 1400
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
SHUTDOWN INPUT
V
S/D
V
H
= Output ON 1.4 1.6
S/D Input Voltage V
L
= Output OFF, I
IN
≤ 10 µA 0.1 0.50 V
V
OUT
≤ 10 mV, I
IN
≤ 50 µA 0.6
I
S/D
V
S/D
= 0 0.02 −1
S/D Input Current µA
V
S/D
= 5V 5 15
(1) Limits are ensured through testing, statistical correlation, or design.
(2) Typical numbers reperesent the most likely norm for 25°C operation.
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