LP2985LV Datasheet, PDF (7/15 Pages) National Semiconductor (TI) – Micropower 150 mA Low-Noise Low-Dropout Regulator in SOT-23 and micro SMD packages for Applications

LP2985LV
150ĆmA LOWĆNOISE, LOWĆDROPOUT REGULATOR
WITH SHUTDOWN FOR OUTPUT VOLTAGES <2.3 V
SLVS552 − OCTOBER 2004
electrical characteristics at specified virtual junction temperature range,
V_IN = V_OUT (nominal) + 1 V, V_ON/OFF = 2 V, C_IN = 1 mF, I_L = 1 mA, C_OUT = 4.7 mF (unless otherwise noted)
PARAMETER
TEST CONDITIONS
LP2985A−XX
LP2985−XX
TJ
UNIT
MIN TYP MAX MIN TYP MAX
nVOUT
Output voltage
tolerance
IL = 1mA
1 mA ≤ IL ≤ 50 mA
1 mA ≤ IL ≤ 150 mA
25°C
−1
25°C
−1.5
−40°C to 125°C −2.5
25°C
−2.5
−40°C to 125°C −3.5
1 −1.5
1.5 −2.5
2.5 −3.5
2.5 −3.0
3.5 −4.0
1.5
2.5
3.5 %VNOM
3.0
4.0
Line regulation
VIN =
25°C
[VOUT(NOM) + 1 V] to 16 V _{−40°C to 125°C}
0.007 0.014
0.032
0.007 0.014
%/V
0.032
VIN(MIN)
Minimum VIN to
maintain output
regulation
(see Note 5)
25°C
−40°C to 125°C
2.05
2.2
2.05
V
2.2
Dropout voltage
VIN-VOUT _{(see Note 5)}
IL = 50 mA
IL = 150 mA
IL = 0
IL = 1 mA
25°C
−40°C to 125°C
25°C
−40°C to 125°C
25°C
−40°C to 125°C
25°C
−40°C to 125°C
120 150
250
280 350
600
65
95
125
75 110
170
120 150
250
mV
280 350
600
65
95
125
75 110
170
IL = 10 mA
25°C
−40°C to 125°C
120 220
400
120 220
400
IGND
Ground pin current
IL = 50 mA
25°C
−40°C to 125°C
350 600
1000
350 600 µA
1000
VON/OFF
ON/OFF input
voltage
(see Note 6)
IL = 150 mA
25°C
−40°C to 125°C
850 1500
2500
850 1500
2500
VON/OFF < 0.3 V (OFF)
VON/OFF < 0.15 V (OFF)
25°C
−40°C to 105°C
−40°C to 125°C
0.01 0.8
0.05
2
5
0.01 0.8
0.05
2
5
VON/OFF= HIGH !
(ON)
VON/OFF = LOW !
(OFF)
25°C
1.4
1.4
−40°C to 125°C 1.6
1.6
25°C
0.55
V
0.55
−40°C to 125°C
0.15
0.15
ON/OFF input
ION/OFF _current
VON/OFF = 0
VON/OFF = 5 V
25°C
−40°C to 125°C
25°C
−40°C to 125°C
0.01
−2
5
15
0.01
−2
µA
5
15
NOTES:
5. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below the value measured
with a 1-V differential. Dropout limits may not apply because VIN must be the greater of a) 2.2 V, or
b) VOUT(nom) + dropout voltage (Max) in order to maintain output regulation.
6. The ON/OFF input must be properly driven for reliable operation (see Application Information).
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