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LP2992IM5-1.8

Part # LP2992IM5-1.8
Description MICROPOWER 250 MA LOW-NOISE ULTRA LOW-DR - Tape and Reel
Category IC
Availability In Stock
Qty 890
Qty Price
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187 - 373 $0.46106
374 - 560 $0.43471
561 - 747 $0.40397
748 + $0.36006
Manufacturer Available Qty
National Semiconductor Corp
Date Code: 0506
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

LP2992
SNVS171G NOVEMBER 2001REVISED MARCH 2013
www.ti.com
Electrical Characteristics (continued)
Limits in standard typeface are for T
J
= 25°C. and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: V
IN
= V
O
(NOM) + 1V, I
L
= 1 mA, C
IN
= 1 µF, C
OUT
= 4.7 µF, V
ON/OFF
= 2V.
LP2992AI-X.X LP2992I-X.X
Symbol Parameter Conditions Typ
(1) (1)
Units
Min Max Min Max
V
IN
–V
O
Dropout Voltage I
L
= 0 0.5 2.5 2.5
(2)
4 4
I
L
= 1 mA 5 9 9
12 12
I
L
= 50 mA 100 125 125
mV
180 180
I
L
= 150 mA 260 325 325
470 470
I
L
= 250 mA 450 575 575
850 850
I
GND
Ground Pin Current I
L
= 0 65 95 95
125 125
I
L
= 1 mA 75 110 110
170 170
I
L
= 50 mA 350 600 600
1000 1000
µA
I
L
= 150 mA 850 1500 1500
2500 2500
I
L
= 250 mA 1500 2300 2300
4000 4000
V
ON/OFF
< 0.3V 0.01 0.8 0.8
V
ON/OFF
< 0.15V 0.05 2 2
V
ON/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
I
ON/OFF
ON/OFF Input Current V
ON/OFF
= 0 0.01 2 2
µA
V
ON/OFF
= 5V 5 15 15
e
n
Output Noise BW = 300 Hz to 50 kHz,
Voltage (RMS) C
OUT
= 10 µF 30 µV
C
BYPASS
= 10 nF
ΔV
OUT
/ΔV
IN
Ripple Rejection f = 1 kHz, C
BYPASS
= 10 nF
45 dB
C
OUT
= 10 µF
I
O
(SC) Short Circuit Current R
L
= 0 (Steady State)
400 mA
(4)
I
O
(PK) Peak Output Current V
OUT
V
o
(NOM) 5% 350 mA
(2) V
IN
must be the greater of 2.2V or V
OUT(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 V
OUT
> 0.5V, and then reduces the maximum output
current as V
OUT
is forced to ground (see Typical Performance Characteristics curves).
4 Submit Documentation Feedback Copyright © 2001–2013, Texas Instruments Incorporated
Product Folder Links: LP2992
LP2992
www.ti.com
SNVS171G NOVEMBER 2001REVISED MARCH 2013
Typical Performance Characteristics
Unless otherwise specified: C
IN
= 1µF, C
OUT
= 4.7µF, V
IN
= V
OUT
(NOM) +1, T
A
= 25°C, ON/OFF pin is tied to V
IN
.
V
OUT
vs
Temperature Short-Circuit Current
Figure 3. Figure 4.
Short Circuit Current
vs
Short-Circuit Current Output Voltage
Figure 5. Figure 6.
Ripple Rejection Ripple Rejection
Figure 7. Figure 8.
Copyright © 2001–2013, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Links: LP2992
LP2992
SNVS171G NOVEMBER 2001REVISED MARCH 2013
www.ti.com
Typical Performance Characteristics (continued)
Unless otherwise specified: C
IN
= 1µF, C
OUT
= 4.7µF, V
IN
= V
OUT
(NOM) +1, T
A
= 25°C, ON/OFF pin is tied to V
IN
.
Ripple Rejection Ripple Rejection
Figure 9. Figure 10.
Ripple Rejection Ripple Rejection
Figure 11. Figure 12.
Ripple Rejection Ripple Rejection
Figure 13. Figure 14.
6 Submit Documentation Feedback Copyright © 2001–2013, Texas Instruments Incorporated
Product Folder Links: LP2992
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