LP2950-N, LP2951-N
www.ti.com
SNVS764Q –JANUARY 2000–REVISED DECEMBER 2017
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)(1)
LP2950AC-XX
LP2951AC-XX
LP2950C-XX
LP2951C-XX
LP2951(2)
PARAMETER
TEST CONDITIONS(1)
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
ERROR COMPARATOR
VOH = 30 V
0.01
1
2
0.01
1
0.01
1
µA(4)
µA(4)
µA(5)
Output leakage
current
VOH = 30 V, –40°C ≤ TJ ≤
125°C
2
2
VIN = (VONOM − 0.5 V),
IOL = 400 µA
150
250
400
150
250
150
250
mV(4)
mV(4)
mV(5)
Output low voltage
VIN = (VONOM − 0.5 V),
IOL = 400 µA,
–40°C ≤ TJ ≤ 125°C
400
400
400
400
See(12)
40
25
60
75
40
25
60
75
40
25
60
75
mV(4)
mV(4)
mV(5)
mV(4)
mV(4)
mV(5)
mV
Upper threshold
voltage
See(12), –40°C ≤ TJ ≤
125°C
See(12)
95
95
95
Lower threshold
voltage
See(12), –40°C ≤ TJ ≤
125°C
140
140
140
Hysteresis
See(12)
15
15
15
SHUTDOWN INPUT
Input
1.3
1.3
1.3
V
0.6
V(4)
V(5)
V(4)
V(5)
µA(4)
µA(4)
µA(5)
µA(4)
µA(4)
µA(5)
µA(4)
µA(4)
µA(5)
Low (Regulator ON),
–40°C ≤ TJ ≤ 125°C
Logic voltage
Logic voltage
0.7
50
0.7
50
2
High (Regulator OFF),
–40°C ≤ TJ ≤ 125°C
2
2
Vshutdown = 2.4 V
30
450
3
50
30
450
3
30
450
3
100
Vshutdown = 2.4 V
–40°C ≤ TJ ≤ 125°C
100
600
100
600
Shutdown pin input
current
Vshutdown = 30 V
600
750
Vshutdown = 30 V,
–40°C ≤ TJ ≤ 125°C
750
10
750
10
See(13)
10
20
Regulator output
current in
shutdown
–40°C ≤ TJ ≤ 125°C
20
20
(12) Comparator thresholds are expressed in terms of a voltage differential at the FEEDBACK pin below the nominal reference voltage
measured at VIN = (VO(NOM) + 1) V. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain =
VOUT/VREF = (R1 + R2) / R2.For example, at a programmed output voltage of 5 V, the ERROR output is specified to go low when the
output drops by 95 mV × 5 V / 1.235 V = 384 mV. Thresholds remain constant as a percent of VOUT as VOUT is varied, with the dropout
warning occurring at typically 5% below nominal, 7.5% ensured.
(13) VSHUTDOWN ≥ 2 V, VIN ≤ 30 V, VOUT = 0, FEEDBACK pin tied to VTAP
.
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