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LP2951CSDX 数据表(PDF) 6 Page - Texas Instruments

部件名 LP2951CSDX
功能描述  LP2950-N/LP2951-N Series of Adjustable Micropower Voltage Regulators
PDF  43 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LP2951CSDX 数据表(HTML) 6 Page - Texas Instruments

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LP2950-N, LP2951-N
SNVS764N – JANUARY 2000 – REVISED MAY 2013
www.ti.com
ELECTRICAL CHARACTERISTICS
(1) (continued)
LP2950AC-XX
LP2950C-XX
LP2951
LP2951AC-XX
LP2951C-XX
Parameter
Conditions(1)
Units
Typ
Tested
Typ
Tested
Design Typ
Tested
Design
Limit(2)(3)
Limit(2)
Limit(4)
Limit(2)
Limit(4)
Error Comparator
Output Leakage
VOH = 30V
0.01
1
0.01
1
0.01
1
μA max
Current
2
2
2
μA max
Output Low Voltage
Vin = (VONOM − 0.5)V
150
250
150
250
150
250
mV
IOL = 400μA
max
400
400
400
mV
max
Upper Threshold
See(13)
60
40
60
40
60
40
mV min
Voltage
25
25
25
mV min
Lower Threshold
See(13)
75
95
75
95
75
95
mV
Voltage
max
140
140
140
mV
max
Hysteresis
See(13)
15
15
15
mV
Shutdown Input
Input
1.3
1.3
1.3
V
Logic
Low (Regulator ON)
0.6
0.7
0.7
V max
Voltage
High (Regulator OFF)
2.0
2.0
2.0
V min
Shutdown Pin Input
Vshutdown = 2.4V
30
50
30
50
30
50
μA max
Current
100
100
100
μA max
Vshutdown = 30V
450
600
450
600
450
600
μA max
750
750
750
μA max
Regulator Output
See(14)
3
10
3
10
3
10
μA max
Current in Shutdown
20
20
20
μA max
(13) Comparator thresholds are expressed in terms of a voltage differential at the Feedback terminal below the nominal reference voltage
measured at Vin = (VONOM + 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 5V, the Error output is specified to go low when the output
drops by 95 mV × 5V/1.235V = 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.
(14) VSHUTDOWN ≥ 2V, VIN ≤ 30V, VOUT = 0, Feedback pin tied to VTAP.
6
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LP2950-N LP2951-N



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