Datasheet
LP5907
SNVS798G –APRIL 2012–REVISED OCTOBER 2013
www.ti.com
ELECTRICAL CHARACTERISTICS
(1)(2)(3)
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 LP5907 (all packages) Typical Application Circuit (pg.
1) with:
V
IN
= V
OUT (NOM)
+ 1 V, V
EN
= 1.2 V, C
IN
= 1 µF, C
OUT
= 1 µF, I
OUT
= 1 mA.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage 2.2 5.5 V
V
IN
= (V
OUT(NOM)
+ 1 V) to 5.5 V,
–2 2
I
OUT
= 1 mA to 250 mA
Output voltage tolerance %
V
IN
= (V
OUT(NOM)
+ 1 V) to 5.5 V,
I
OUT
= 1 mA to 250 mA –3 3
ΔV
OUT
(V
OUT
< 1.8V, SOT-23, X2SON packages)
V
IN
= (V
OUT(NOM)
+ 1 V) to 5.5 V,
Line regulation 0.02 %/V
I
OUT
= 1 mA
Load regulation I
OUT
= 1 mA to 250 mA 0.001 %/mA
Load current See
(4)
I
LOAD
mA
Maximum output current 250
V
EN
= 1.2 V, I
OUT
= 0 mA 12 25
I
Q
Quiescent current
(5)
V
EN
= 1.2 V, I
OUT
= 250 mA 250 425 µA
V
EN
= 0.3 V (Disabled) 0.2 1
I
G
Ground current
(6)
I
OUT
= 0 mA (V
EN
= 1.2 V) 14 µA
I
OUT
= 100 mA 50
V
DO
Dropout voltage
(7)
I
OUT
= 250 mA (DSBGA) 120 200 mV
I
OUT
= 250 mA (SOT-23, X2SON packages) 250
I
SC
Short circuit current limit See
(8)
250 500 mA
f = 100 Hz, I
OUT
= 20 mA 90
f = 1 kHz, I
OUT
= 20 mA 82
Power supply rejection
PSRR dB
ratio
(9)
f = 10 kHz, I
OUT
= 20 mA 65
f = 100 kHz, I
OUT
= 20 mA 60
I
OUT
= 1 mA 10
e
N
Output noise voltage
(9)
BW = 10 Hz to 100 kHz µV
RMS
I
OUT
= 250 mA 6.5
Temperature 160
T
SHUTDOWN
Thermal shutdown °C
Hysteresis 15
LOGIC INPUT THRESHOLDS
V
IL
Low input threshold (V
EN
) V
IN
= 2.2 V to 5.5 V 0.4 V
V
IH
High input threshold (V
EN
) V
IN
= 2.2 V to 5.5 V 1.2 V
V
EN
= 5.5 V and V
IN
= 5.5 V 5.5
I
EN
Input current at V
EN
Pin
(10)
µA
V
EN
= 0 V and V
IN
= 5.5 V 0.001
(1) All voltages are with respect to the potential at the GND pin.
(2) Min and Max limits are ensured by design, test, or statistical analysis. Typical numbers are not verified, but do represent the most likely
norm.
(3) 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.
(4) The device maintains a stable, regulated output voltage without a load current.
(5) Quiescent current is defined here as the difference in current between the input voltage source and the load at V
OUT
.
(6) Ground current is defined here as the total current flowing to ground as a result of all input voltages applied to the device.
(7) 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.
(8) Short circuit current (I
SC
) for the LP5907 is equivalent to current limit. To minimize thermal effects during testing, I
SC
is measured with
V
OUT
pulled to 100 mV below its nominal voltage.
(9) This specification is ensured by design.
(10) There is a 1-MΩ resistor between V
EN
and ground on the device.
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