Datasheet

LP5900
SNVS358O –JULY 2005–REVISED MAY 2013 www.ti.com
Thermal Properties
Junction to Ambient Thermal Resistance θ
JA
(1)
JEDEC Board (DSBGA)
(2)
88°C/W
4L Cellphone Board (DSBGA) 157.4°C/W
JEDEC Board (WSON-6)
(2)
77.3°C/W
(1) 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.
(2) Detailed description of the board can be found in JESD51-7
Electrical Characteristics
Limits in standard typeface are for T
A
= 25ºC. 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 LP5900 Typical Application Circuit (pg. 1) with: V
IN
= V
OUT (NOM)
+ 1.0V, V
EN
= 1.2V, C
IN
= C
OUT
= 0.47 μF, I
OUT
= 1.0 mA.
(1)
,
(2)
Symbol Parameter Conditions Min Typ Max Units
V
IN
Input Voltage 2.5 5.5 V
ΔV
OUT
Output Voltage Tolerance V
IN
= (V
OUT(NOM)
+ 1.0V) to 5.5V, I
OUT
= 1 −2 2
%
mA to 150mA
Line Regulation V
IN
= (V
OUT(NOM)
+ 1.0V) to 5.5V, I
OUT
= 1
0.05 %/V
mA
Load Regulation I
OUT
= 1 mA to 150 mA 0.001 %/mA
I
LOAD
Load Current
(3)
0
mA
Maximum Output Current 150
I
Q
Quiescent Current
(4)
V
EN
= 1.2V, I
OUT
= 0 mA 25 50
V
EN
= 1.2V, I
OUT
= 150 mA 160 230 µA
V
EN
= 0.3V (Disabled) 0.003 1.0
I
G
Ground Current
(5)
I
OUT
= 0 mA (V
OUT
= 2.5V) 30 µA
V
DO
Dropout Voltage
(6)
I
OUT
= 150 mA 80 150 mV
I
SC
Short Circuit Current Limit
(7)
300 mA
PSRR Power Supply Rejection Ratio f = 100 Hz, I
OUT
= 150 mA 85
(8)
f = 1 kHz, I
OUT
= 150 mA 75
f = 10 kHz, I
OUT
= 150 mA 65 dB
f = 50 kHz, I
OUT
= 150 mA 52
f = 100 kHz, I
OUT
= 150 mA 40
e
n
Output Noise Voltage BW = 10 Hz to 100 I
OUT
= 0 mA 7 μV
RMS
(8)
kHz, V
IN
= 4.2V
I
OUT
= 1 mA 10
I
OUT
= 150 mA 6.5
T
SHUTDOWN
Thermal Shutdown Temperature 160
ºC
Hysteresis 20
Login Input Thresholds
V
IL
Low Input Threshold (V
EN
) V
IN
= 2.5V to 5.5V 0.4 V
V
IH
High Input Threshold (V
EN
) V
IN
= 2.5V to 5.5V 1.2 V
(1) All voltages are with respect to the potential at the GND pin.
(2) Min and Max limits are specified by design, test, or statistical analysis. Typical numbers are not ensured, but do represent the most
likely norm.
(3) The device maintains a stable, regulated output voltage without a load current.
(4) Quiescent current is defined here as the difference in current between the input voltage source and the load at V
OUT
.
(5) Ground current is defined here as the total current flowing to ground as a result of all input voltages applied to the device.
(6) 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 2.5V.
(7) Short Circuit Current is measured with V
OUT
pulled to 0v and V
IN
worst case = 6.0V.
(8) This specification is specified by design.
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