Datasheet

LP2966
www.ti.com SNVS028E –APRIL 2000–REVISED APRIL 2013
ELECTRICAL CHARACTERISTICS (continued)
Limits in standard typeface are for T
j
= 25°C, and limits in boldface type apply over the full operating junction temperature
range. Unless otherwise specified, V
IN
= V
O(NOM)
+ 1V
(1)
, C
OUT
= 1µF, I
OUT
= 1mA, C
IN
= 1µF, V
SD1
= V
SD2
= V
IN
.
LP2966IMM
(3)
Symbol Parameter Conditions Typ
(2)
Unit
Min Max
Over Temperature Protection
Tsh(t) Shutdown Threshold 165 °C
Tsh(h) Thermal Shutdown 25 °C
Hysteresis
Shutdown Input
V
SDT
Shutdown Threshold
(12)
Output = Low 0 0.1
V
Output = High V
IN
V
IN
- 0.1
T
dOFF
Turn-off Delay
(13)
I
L
= 100 mA 20 µsec
T
dON
Turn-on Delay
(13)
I
L
= 100 mA 25 µsec
I
SD
SD Input Current V
SD
= V
IN
1
nA
V
SD
= 0 V 1
Error Flag Comparators
V
T
Threshold (output goes See
(14)
10 5 16 %
high to low)
V
TH
Threshold Hysteresis See
(14)
5 2 8 %
V
ERR(Sat)
Error Flag Saturation I
Fsink
= 100µA 0.015 0.1 V
I
EF(leak)
Error Flag Pin Leakage 1 nA
Current
I
(EFsink)
Error Flag Pin Sink 1 mA
Current
AC Parameters
PSRR Ripple Rejection V
IN
= V
OUT
+ 1V, f = 120Hz, 60
V
OUT
= 3.3V
dB
V
IN
= V
OUT
+ 0.3V, f = 120Hz, 40
V
OUT
= 3.3V
ρn(1/f) Output Noise Density f =120Hz 1 µV/√Hz
e
n
Output Noise Voltage BW = 10Hz − 100kHz, 150
(rms) C
OUT
= 10µF
µV(rms)
BW = 300Hz − 300kHz, 100
C
OUT
= 10µF
(12) V
SDT
is the shutdown pin voltage threshold below which the output is disabled.
(13) Turn-on delay is the time interval between the low to high transition on the shutdown pin to the output voltage settling to within 5% of the
nominal value. Turn-off delay is the time interval between the high to low transition on the shutdown pin to the output voltage dropping
below 50% of the nominal value. The external load impedance influences the output voltage decay in shutdown mode.
(14) Error Flag threshold and hysteresis are specified as the percentage below the regulated output voltage.
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