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LM2991QML 数据表(PDF) 4 Page - Texas Instruments

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部件名 LM2991QML
功能描述  Negative Low Dropout Adjustable Regulator
Download  15 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM2991QML 数据表(HTML) 4 Page - Texas Instruments

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LM2991QML
SNVS392A – MARCH 2006 – REVISED OCTOBER 2011
www.ti.com
LM2991 ELECTRICAL CHARACTERISTICS DC PARAMETERS
The following conditions apply, unless otherwise specified.
DC:
VI = −10V, VO = −3V, IO = 1A, CO = 47µF, RL = 2.7KΩ
Sub-
Symbol
Parameter
Conditions
Notes
Min
Max
Units
groups
VRef
Reference Voltage
5mA
≤ IO ≤ 1A
-1.234
-1.186
V
1
5mA
≤ IO ≤ 1A,
-1.27
-1.15
V
2, 3
VO - 1V ≥ VI ≥ -26V
VO
Output Voltage Range
-3.0
V
1
VI = -26V
-24
V
1
-25
V
2, 3
VRLine
Line Regulation
IO = 5mA, VO - 1V ≥ VI ≥ -26V
-26
+26
mV
1, 2, 3
VRLoad
Load Regulation
50mA
≤ IO ≤ 1A
-12
+12
mV
1
-15
+15
mV
2, 3
VDO
Dropout Voltage
IO = 0.1A, ΔVO ≤ 100mV
0.2
V
1
0.3
V
2, 3
IO = 1A, ΔVO ≤ 100mV
0.8
V
1
1.0
V
2, 3
IQ
Quiescent Current
IO ≤ 1A
5.0
mA
1, 2, 3
Dropout Quiescent Current
VI = VO, IO ≤ 1A
50
mA
1, 2, 3
VON
Output Noise
10Hz - 100KHz, IO = 5mA
450
µV
1
500
µV
2, 3
ON/OFF Input Voltage
VO : ON
0.6
V
1, 2, 3
VO : OFF
2.4
V
1, 2, 3
ON/OFF Input Current
VON/OFF = 0.6V (VO : ON)
10
µA
1
25
µA
2, 3
VON/OFF = 2.4V (VO : OFF)
100
µA
1
150
µA
2, 3
IL
Output Leakage Current
VI = -26V, VON/OFF = 2.4V, VO = 0V
250
µA
1
300
µA
2, 3
ILimit
Current Limit
VO = 0V
1.5
2.5
A
1
1.0
4.0
A
2, 3
LM2991 ELECTRICAL CHARACTERISTICS AC PARAMETERS
The following conditions apply, unless otherwise specified.
AC:
VI = −10V, VO = −3V, IO = 1A, CO = 47µF, RL = 2.7KΩ
Sub-
Symbol
Parameter
Conditions
Notes
Min
Max
Units
groups
RR
Ripple Rejection
VRipple = 1VRMS, FRipple = 1KHz, IO = 5mA
50
dB
1
LM2991 ELECTRICAL CHARACTERISTICS DC DRIFT PARAMETERS
The following conditions apply, unless otherwise specified. DC:
VI = −10V, VO = −3V, IO = 1A, CO = 47µF, RL = 2.7kΩ
Deltas not required on B
−Level product. Deltas required for S−Level product ONLY.
Sub-
Symbol
Parameter
Conditions
Notes
Min
Max
Units
groups
VRef
Reference Voltage
5mA
≤ IO ≤ 1A
±20
mV
1
4
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Copyright © 2006–2011, Texas Instruments Incorporated
Product Folder Links: LM2991QML


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