Electrical Characteristics (Note 2) (Continued)
LP2951
LP2950AC-XX
LP2951AC-XX
Tested Design
LP2950C-XX
LP2951C-XX
Conditions
(Note 2)
Parameter
Tested
Limit
Tested Design
Units
Typ
Typ
Limit
Limit
Typ
Limit
Limit
(Notes 3, 16)
(Note 3) (Note 4)
(Note 3) (Note 4)
All Voltage Options
Temperature
Coefficient
Feedback Pin Bias
Current Temperature
Coefficient
0.1
0.1
0.1
nA/˚C
Error Comparator
Output Leakage
Current
VOH = 30V
0.01
150
1
2
0.01
150
1
0.01
150
1
µA max
µA max
mV max
2
2
Output Low
Vin = (VONOM −
0.5)V
250
250
250
Voltage
IOL = 400µA
(Note 6)
400
40
400
400
mV max
mV min
mV min
mV max
mV max
mV
Upper Threshold
Voltage
60
75
15
1.3
60
75
15
1.3
40
60
75
15
1.3
40
25
25
25
Lower Threshold
Voltage
(Note 6)
(Note 6)
95
95
95
140
140
140
Hysteresis
Shutdown Input
Input
V
Logic
Low (Regulator
ON)
0.6
2.0
0.7
2.0
0.7
2.0
V max
Voltage
High (Regulator
OFF)
V min
Shutdown Pin Input
Current
Vshutdown = 2.4V
30
450
3
50
100
600
750
10
30
450
3
50
100
600
750
10
30
450
3
50
100
600
750
10
µA max
µA max
µA max
µA max
µA max
µA max
Vshutdown = 30V
(Note 11)
Regulator Output
Current in Shutdown
20
20
20
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device
is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical
Characteristics tables.
Note 2: Unless otherwise specified all limits guaranteed for V = (V
+ 1)V, I = 100µA and C = 1µF for 5V versions and 2.2µF for 3V and 3.3V versions. Limits
L L
IN
ONOM
appearing in boldface type apply over the entire junction temperature range for operation. Limits appearing in normal type apply for T = T = 25˚C. Additional
A
J
conditions for the 8-pin versions are FEEDBACK tied to V
, OUTPUT tied to SENSE, and V
≤ 0.8V.
TAP
SHUTDOWN
Note 3: Guaranteed and 100% production tested.
Note 4: Guaranteed but not 100% production tested. These limits are not used to calculate outgoing AQL levels.
Note 5: Dropout Voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V differential.
At very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into account.
Note 6: Comparator thresholds are expressed in terms of a voltage differential at the Feedback terminal below the nominal reference voltage measured at V
=
in
(V NOM + 1)V. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = V /V = (R1 + R2)/R2.For example, at a
O
out ref
programmed output voltage of 5V, the Error output is guaranteed to go low when the output drops by 95mV x 5V/1.235V = 384 mV. Thresholds remain constant as
a percent of V as V is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.
out
out
Note 7: V ≤ V ≤ (V − 1V), 2.3V ≤ V ≤ 30V, 100µA ≤ I ≤ 100mA, T ≤ T .
JMAX
ref
out
in
in
L
J
Note 8: The junction-to-ambient thermal resistances are as follows: 180˚C/W and 160˚C/W for the TO-92 package with 0.40 inch and 0.25 inch leads to the printed
circuit board (PCB) respectively, 105˚C/W for the molded plastic DIP (N), 130˚C/W for the ceramic DIP (J), 160˚C/W for the molded plastic SOP (M), 200˚C/W for
the molded plastic MSOP (MM), and 160˚C/W for the metal can package (H). The above thermal resistances for the N, J, M, and MM packages apply when the
package is soldered directly to the PCB. Junction-to-case thermal resistance for the H package is 20˚C/W. Junction-to-case thermal resistance for the TO-252
package is 5.4˚C/W. The value of θ for the LLP package is typically 51˚C/W but is dependent on the PCB trace area, trace material, and the number of layers and
JA
thermal vias. For details of thermal resistance and power dissipation for the LLP package, refer to Application Note AN-1187.
Note 9: May exceed input supply voltage.
7
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