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LP2992IM5-2.5 数据表(PDF) 4 Page - Texas Instruments

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部件名 LP2992IM5-2.5
功能描述  LP2992 Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and WSON Packages Designed for Use with Very Low ESR Output Capacitors
PDF  28 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LP2992IM5-2.5 数据表(HTML) 4 Page - Texas Instruments

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LP2992
SNVS171G – NOVEMBER 2001 – REVISED MARCH 2013
www.ti.com
Electrical Characteristics (continued)
Limits in standard typeface are for TJ = 25°C. and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 1 mA, CIN = 1 µF, COUT = 4.7 µF, VON/OFF = 2V.
LP2992AI-X.X
LP2992I-X.X
Symbol
Parameter
Conditions
Typ
(1)
(1)
Units
Min
Max
Min
Max
VIN–VO
Dropout Voltage
IL = 0
0.5
2.5
2.5
(2)
4
4
IL = 1 mA
5
9
9
12
12
IL = 50 mA
100
125
125
mV
180
180
IL = 150 mA
260
325
325
470
470
IL = 250 mA
450
575
575
850
850
IGND
Ground Pin Current
IL = 0
65
95
95
125
125
IL = 1 mA
75
110
110
170
170
IL = 50 mA
350
600
600
1000
1000
µA
IL = 150 mA
850
1500
1500
2500
2500
IL = 250 mA
1500
2300
2300
4000
4000
VON/OFF < 0.3V
0.01
0.8
0.8
VON/OFF < 0.15V
0.05
2
2
VON/OFF
ON/OFF Input Voltage
High = O/P ON
1.4
1.6
1.6
V
(3)
Low = O/P OFF
0.55
0.15
0.15
ION/OFF
ON/OFF Input Current
VON/OFF = 0
0.01
−2
−2
µA
VON/OFF = 5V
5
15
15
en
Output Noise
BW = 300 Hz to 50 kHz,
Voltage (RMS)
COUT = 10 µF
30
µV
CBYPASS = 10 nF
ΔVOUT/ΔVIN
Ripple Rejection
f = 1 kHz, CBYPASS = 10 nF
45
dB
COUT = 10 µF
IO(SC)
Short Circuit Current
RL = 0 (Steady State)
400
mA
(4)
IO(PK)
Peak Output Current
VOUT ≥ Vo(NOM) −5%
350
mA
(2)
VIN must be the greater of 2.2V or VOUT(nom) + Dropout Voltage to maintain output regulation. Dropout voltage is defined as the input to
output differential at which the output voltage drops 2% below the value measured with a 1V differential.
(3)
The ON/OFF input must be properly driven to prevent possible misoperation. For details, refer to Application Hints.
(4)
The LP2992 has foldback current limiting which allows a high peak current when VOUT > 0.5V, and then reduces the maximum output
current as VOUT is forced to ground (see Typical Performance Characteristics curves).
4
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Copyright © 2001–2013, Texas Instruments Incorporated
Product Folder Links: LP2992



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