IC VREG 1.2 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PBGA4, 0.917 X 0.866 MM, 0.40 MM PITCH, LEAD FREE, MICRO, SMD-4, Fixed Positive Single Output LDO Regulator
The actual physical placement of the package marking will vary from part to part.
Pin Descriptions
Pin No.
micro SMD
A2
A1
B1
B2
V
EN
GND
V
OUT
V
IN
Enable input; disables the regulator when
≤
0.35V. Enables the
regulator when
≥
1.0V.
Common ground.
Output voltage. A 1.0
μF
Low ESR capacitor should be connected to
this Pin. Connect this output to the load circuit.
Input voltage supply. A 1.0 µF capacitor should be connected at this
input.
Symbol
Name and Function
Ordering Information
micro SMD Package (Lead Free)
Output Voltage
(V)
1.2
1.3
1.8
2.8
3.0
3.3
3.6
LP5990TM-1.2/NOPB
LP5990TM-1.3/NOPB
LP5990TM-1.8/NOPB
LP5990TM-2.8/NOPB
LP5990TM-3.0/NOPB
LP5990TM-3.3/NOPB
LP5990TM-3.6/NOPB
Supplied As
250 Units Tape and Reel
3k Units Tape and Reel
LP5990TMX-1.2/NOPB
LP5990TMX-1.3/NOPB
LP5990TMX-1.8/NOPB
LP5990TMX-2.8/NOPB
LP5990TMX-3.0/NOPB
LP5990TMX-3.3/NOPB
LP5990TMX-3.6/NOPB
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2
LP5990
Absolute Maximum Ratings
(Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
Pin: Input Voltage
V
OUT
Pin: Output Voltage
V
EN
Pin: Enable Input Voltage
Continuous Power Dissipation
(Note 3)
Junction Temperature (T
JMAX
)
Storage Temperature Range
Maximum Lead Temperature
(Soldering, 10 sec.)
ESD Rating (Note 4)
-0.3 to 6.0V
-0.3 to (V
IN
+ 0.3V) to 6.0V
(max)
-0.3 to 6.0V (max)
Internally Limited
150°C
-65 to 150°C
260°C
Human Body Model
Machine Model
2 kV
200V
(Note 1)
,
(Note 2)
2.2V to 5.5V
0 to 5.5V (max)
0 to 200 mA
-40°C to +125°C
-40°C to +85°C
Operating Ratings
V
IN
: Input Voltage Range
V
EN
: Enable Voltage Range
Recommended Load Current
(Note 5)
Junction Temperature Range (T
J
)
Ambient Temperature Range (T
A
)
(Note 5)
Thermal Properties
Junction to Ambient Thermal Resistance
θ
JA
(Note 6)
JEDEC Board (microSMD)
(Note 14)
100.6°C/W
4L Cellphone Board (microSMD)
174.8°C/W
Electrical Characteristics
Limits in standard typeface are for T
A
= 25°C. Limits in
boldface
type apply over the full operating junction temperature range (-40°
C
≤
T
J
≤
+125°C). Unless otherwise noted, specifications apply to the LP5990 Typical Application Circuit (pg. 1) with: V
IN
= V
OUT
(NOM)
+ 1.0V, or 2.2V, whichever is higher. V
EN
= 1.0V, C
IN
= C
OUT
= 1.0 μF,
I
OUT
= 1.0 mA. (Note 2), (Note 7)
Symbol
V
IN
ΔV
OUT
Parameter
Input Voltage
Output Voltage Tolerance
Line Regulation
Load Regulation
I
LOAD
I
Q
Load Current
Maximum Output Current
Quiescent Current (Note 10)
V
EN
= 1.0V, I
OUT
= 0 mA
V
EN
= 1.0V, I
OUT
= 200 mA
V
EN
= <0.35V (Disabled)
V
DO
I
SC
PSRR
e
n
T
SHUTDOWN
Dropout Voltage(Note 9)
Short Circuit Current Limit
Power Supply Rejection Ratio
(Note 13)
Output Noise Voltage
(Note 13)
Thermal Shutdown
I
OUT
= 200 mA
(Note 11)
f = 10 kHz, I
OUT
= 200 mA
BW = 10 Hz to 100 kHz, V
OUT
= 1.8V
V
IN
= 4.2V, I
OUT
= 1 mA V
OUT
= 2.8V
Temperature
Hysteresis
V
IN
= (V
OUT(NOM)
+ 1.0V) to 5.5V
V
IN
= (V
OUT(NOM)
+ 1.0V) to 5.5V, I
OUT
= 1
mA
I
OUT
= 1 mA to 200 mA
(Note 8)
0
200
30
35
0.01
160
600
55
60
85
160
20
°C
250
mV
mA
dB
μV
RMS
75
µA
Conditions
Min
2.2
−1
1
5
15
Typ
Max
5.5
1
Units
V
%
mV
mV
mA
3
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LP5990
Electrical Characteristics (continued).
Limits in standard typeface are for T
A
= 25°C. Limits in
boldface
type apply over the full operating junction temperature range (-40°
C
≤
T
J
≤
+125°C). Unless otherwise noted, specifications apply to the LP5990 Typical Application Circuit (pg. 1) with: V
IN
= V
OUT
(NOM)
+ 1.0V, or 2.2V, whichever is higher. V
EN
= 1.0V, C
IN
= C
OUT
= 1.0 μF,
I
OUT
= 1.0 mA. (Note 2), (Note 7)
Symbol
V
IL
V
IH
I
EN
Parameter
Low Input Threshold (V
EN
)
High Input Threshold (V
EN
)
Input Current at V
EN
Pin
(Note 12)
Line Transient
(Note 13)
Load Transient
(Note 13)
T
ON
T
OFF
Turn on Time
Turn off Time from Enable
Conditions
V
IN
= 2.2V to 5.5V
V
IN
= 2.2V to 5.5V
V
EN
= 5.5V and V
IN
= 5.5V
V
EN
= 0.0V and V
IN
= 5.5V
T
rise
= T
fall
= 30μs. ΔV
IN
= 600 mV
I
OUT
= 1 mA to 200 mA in 1
μs
I
OUT
= 200 mA to 1 mA in 1
μs
To 98% of V
OUT(NOM)
100mV of V
OUT(NOM)
I
OUT
= 0mA
1.0
2
0.001
4
–50
50
60
500
mV
μs
μs
5
Min
Typ
Max
0.35
Units
V
V
μA
Enable Input Thresholds
Transient Characteristics
ΔV
OUT
mV
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation
of the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions,
see the Electrical Characteristics tables.
Note 2:
All voltages are with respect to the potential at the GND pin.
Note 3:
Internal thermal shutdown circuitry protects the device from permanent damage.
Note 4:
The Human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin. The machine model is a 200 pF capacitor discharged
directly into each pin. MIL-STD-883 3015.7
Note 5:
In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be
derated. Maximum ambient temperature (T
A-MAX
) is dependent on the maximum operating junction temperature (T
J-MAX-OP
= 125°C), the maximum power
dissipation of the device in the application (P
D-MAX
), and the junction-to ambient thermal resistance of the part/package in the application (θ
JA
), as given by the
following equation: T
A-MAX
= T
J-MAX-OP
– (θ
JA
× P
D-MAX
). See applications section.
Note 6:
Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power dissipation exists,
special care must be paid to thermal dissipation issues in board design.
Note 7:
Min and Max limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm.
Note 8:
The device maintains a stable, regulated output voltage without a load current.
Note 9:
Dropout voltage is the voltage difference between the input and the output at which the output voltage drops to 100 mV below its nominal value. This
parameter only applies to output voltages above 2.8V.
Note 10:
Quiescent current is defined here as the difference in current between the input voltage source and the load at V
OUT
.
Note 11:
Short Circuit Current is measured with V
OUT
pulled to 0V.
Note 12:
There is a 3 MΩ resistor between V
EN
and ground on the device.
Note 13:
This specification is guaranteed by design.
Note 14:
Detailed description of the board can be found in JESD51-7
Note: The minimum capacitance should be greater than 0.3 µF over the full range of operating conditions. The capacitor tolerance should be 30% or better over
the full temperature range. The full range of operating conditions for the capacitor in the application should be considered during device selection to ensure this
minimum capacitance specification is met. X7R capacitors are recommended however capacitor types X5R, Y5V and Z5U may be used with consideration of the
