Datasheet

LP3961, LP3964
SNVS056H –MAY 2000–REVISED APRIL 2013 www.ti.com
Electrical Characteristics
LP3961/LP3964 (continued)
Limits in standard typeface are for T
J
= 25°C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: V
IN
= V
O(NOM)
+ 1V, I
L
= 10 mA, C
OUT
= 33µF, V
SD
= V
IN
-0.3V.
Symbol Parameter Conditions Typ
(1)
LP3961/4
(2)
Units
Min Max
T
dON
Turn-on delay I
L
= 800 mA 25 µs
I
SD
SD Input Current V
SD
= V
IN
1 nA
ERROR FLAG COMPARATOR
V
T
Threshold See
(7)
10 5 16 %
V
TH
Threshold Hysteresis See
(7)
5 2 8 %
V
EF(Sat)
Error Flag Saturation I
sink
= 100µA 0.02 0.1 V
Td Flag Reset Delay 1 µs
I
lk
Error Flag Pin Leakage Current 1 nA
I
max
Error Flag Pin Sink Current V
Error
= 0.5V (over temp.) 1 mA
AC PARAMETERS
V
IN
= V
OUT
+ 1.5V 60
C
OUT
= 100uF
V
OUT
= 3.3V
PSRR Ripple Rejection dB
V
IN
= V
OUT
+ 0.3V 40
C
OUT
= 100uF
V
OUT
= 3.3V
ρ
n(l/f
Output Noise Density f = 120Hz 0.8 µV
BW = 10Hz – 100kHz 150
e
n
Output Noise Voltage (rms) µV (rms)
BW = 300Hz – 300kHz 100
(7) Error Flag threshold and hysteresis are specified as percentage of regulated output voltage.
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