*ON/OFF input must be actively terminated. Tie to V
IN
if this function is not to be used.
**Minimum capacitance is shown to ensure stability (may be increased without limit). Ceramic capacitor required for output (see Application Hints).
***Reduces output noise (may be omitted if application is not noise critical). Use ceramic or film type with very low leakage current (see Application Hints).
Connection Diagrams
5-Lead Small Outline Package (M5)
6-Lead LLP Package (LD)
20029403
20029446
Top View
See NS Package Number MF05A
For ordering information see
Table 1
Top View
See NS Package Number NLDBA006
Outline Drawing LDE06A
www.national.com
2
LP2992
Ordering Information
TABLE 1. Package Marking and Ordering Information
Output Voltage
(V)
1.5
1.5
1.5
1.5
1.8
1.8
1.8
1.8
2.5
2.5
2.5
2.5
3.0
3.0
3.0
3.0
3.3
3.3
3.3
3.3
5.0
5.0
5.0
5.0
1.5
1.5
1.5
1.5
1.8
1.8
1.8
1.8
2.5
2.5
2.5
2.5
3.3
3.3
3.3
3.3
5.0
5.0
5.0
5.0
Grade
Order Information
Package
Marking
LFBA
LFBA
LFBB
LFBB
LFCA
LFCA
LFCB
LFCB
LFDA
LFDA
LFDB
LFDB
LF8A
LF8A
LF8B
LF8B
LFEA
LFEA
LFEB
LFEB
LFFA
LFFA
LFFB
LFFB
L011A
L011A
L011AB
L011AB
L012A
L012A
L012AB
L012AB
L013A
L013A
L013AB
L013AB
L014A
L014A
L014AB
L014AB
L015A
L015A
L015AB
L015AB
Supplied as:
5-Lead Small Outline Package (M5)
A
A
STD
STD
A
A
STD
STD
A
A
STD
STD
A
A
STD
STD
A
A
STD
STD
A
A
STD
STD
A
A
STD
STD
A
A
STD
STD
A
A
STD
STD
A
A
STD
STD
A
A
STD
STD
LP2992AIM5X-1.5
LP2992AIM5-1.5
LP2992IM5X-1.5
LP2992IM5-1.5
LP2992AIM5X-1.8
LP2992AIM5-1.8
LP2992IM5X-1.8
LP2992IM5-1.8
LP2992AIM5X-2.5
LP2992AIM5-2.5
LP2992IM5X-2.5
LP2992IM5-2.5
LP2992AIM5X-3.0
LP2992AIM5-3.0
LP2992IM5X-3.0
LP2992IM5-3.0
LP2992AIM5X-3.3
LP2992AIM5-3.3
LP2992IM5X-3.3
LP2992IM5-3.3
LP2992AIM5X-5.0
LP2992AIM5-5.0
LP2992IM5X-5.0
LP2992IM5-5.0
LP2992AILDX-1.5
LP2992AILD-1.5
LP2992ILDX-1.5
LP2992ILD-1.5
LP2992AILDX-1.8
LP2992AILD-1.8
LP2992ILDX-1.8
LP2992ILD-1.8
LP2992AILDX-2.5
LP2992AILD-2.5
LP2992ILDX-2.5
LP2992ILD-2.5
LP2992AILDX-3.3
LP2992AILD-3.3
LP2992ILDX-3.3
LP2992ILD-3.3
LP2992AILDX-5.0
LP2992AILD-5.0
LP2992ILDX-5.0
LP2992ILD-5.0
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
3000 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
1000 Units on Tape and Reel
4500 Units on Tape and Reel
1000 Units on Tape and Reel
6-Lead LLP Package (LDE06A)
3
www.national.com
LP2992
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
Operating Junction Temperature
Range
Lead Temp. (Soldering, 5 sec.)
ESD Rating (Note 2)
Power Dissipation (Note 3)
−65˚C to +150˚C
−40˚C to +125˚C
260˚C
2 kV
Internally Limited
Input Supply Voltage (Survival)
Input Supply Voltage (Operating)
Shutdown Input Voltage (Survival)
Output Voltage (Survival, (Note 4))
I
OUT
(Survival)
Input-Output Voltage (Survival,
(Note 5))
−0.3V to +16V
2.2V to +16V
−0.3V to +16V
−0.3V to +9V
Short Circuit
Protected
−0.3V to +16V
Electrical Characteristics
Limits in standard typeface are for T
J
= 25˚C. and limits in
boldface type
apply over the full operating temperature range. Un-
less 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
Symbol
∆V
O
Parameter
Output Voltage
Tolerance
Conditions
I
L
= 1 mA
1 mA
≤
I
L
≤
50 mA
1 mA
≤
I
L
≤
250 mA
Output Voltage
Line Regulation
V
IN
(min)
Minimum input voltage
required to maintain
outpout regulation
Dropout Voltage
(Note 7)
I
L
= 0
I
L
= 1 mA
I
L
= 50 mA
I
L
= 150 mA
I
L
= 250 mA
I
GND
Ground Pin Current
I
L
= 0
I
L
= 1 mA
I
L
= 50 mA
I
L
= 150 mA
I
L
= 250 mA
V
ON/OFF
<
0.3V
V
ON/OFF
<
0.15V
V
ON/OFF
ON/OFF Input Voltage
(Note 8)
High = O/P ON
Low = O/P OFF
2.05
V
O
(NOM)+1V
≤
V
IN
≤
16V
0.007
Typ
(Note 6)
Min
−1.0
−1.5
−2.5
−3.5
−4.5
Max
1.0
1.5
2.5
3.5
4.5
0.014
0.032
2.20
LP2992I-X.X
(Note 6)
Min
−1.5
−2.5
−3.5
−4.0
−5.0
Max
1.5
2.5
3.5
4.0
5.0
0.014
%/V
0.032
2.20
V
%V
NOM
Units
V
IN
–V
O
0.5
5
100
260
450
65
75
350
850
1500
0.01
0.05
1.4
0.55
1.6
2.5
4
9
12
125
180
325
470
575
850
95
125
110
170
600
1000
1500
2500
2300
4000
0.8
2
1.6
0.15
2.5
4
9
12
125
180
325
470
575
850
95
125
110
170
600
1000
1500
2500
2300
4000
0.8
2
0.15
V
µA
mV
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4
LP2992
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. Un-
less 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
Symbol
Parameter
ON/OFF Input Current
Output Noise
Voltage (RMS)
Ripple Rejection
Conditions
V
ON/OFF
= 0
V
ON/OFF
= 5V
BW = 300 Hz to 50 kHz,
C
OUT
= 10 µF
C
BYPASS
= 10 nF
f = 1 kHz, C
BYPASS
= 10 nF
C
OUT
= 10 µF
45
dB
30
µV
Typ
0.01
5
(Note 6)
Min
Max
−2
15
LP2992I-X.X
(Note 6)
Min
Max
−2
15
µA
Units
I
ON/OFF
e
n
I
O
(SC)
I
O
(PK)
Short Circuit Current
Peak Output Current
R
L
= 0 (Steady State)
(Note 9)
V
OUT
≥
V
o
(NOM) −5%
400
350
mA
mA
Note 1:
“Absolute Maximum Ratings” indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the
device outside of its rated operating conditions.
Note 2:
The ESD rating of pins 3 and 4 for the SOT-23 package, or pins 1 and 3 for the LLP package, is 1 kV.
Note 3:
The maximum allowable power dissipation is a function of the maximum junction temperature, T
J
(MAX), the junction-to-ambient thermal resistance,
θ
J-A
,
and the ambient temperature, T
A
. The maximum allowable power dissipation at any ambient temperture is calculated using:
Where the value of
θ
J-A
for the SOT-23 package is 220˚C/W in a typical PC board mounting and the LLP package is 65˚C/W. Exceeding the maximum allowable
dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown.
Note 4:
If used in a dual-supply system where the regulator load is returned to a negative supply, the LP2992 output must be diode-clamped to ground.
Note 5:
The output PNP structure contains a diode between the V
IN
to V
OUT
terminals that is normally reverse-biased. Reversing the polarity from V
IN
to V
OUT
will
turn on this diode.
Note 6:
Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 7:
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.
Note 8:
The ON/OFF input must be properly driven to prevent possible misoperation. For details, refer to Application Hints.
Note 9:
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).
