LP2953_15 Datasheet, PDF (6/41 Pages) Texas Instruments – LP295x Adjustable Micropower Low-Dropout Voltage Regulators

LP2952-N, LP2952A, LP2953, LP2953A
SNVS095F – MAY 2004 – REVISED MARCH 2015
www.ti.com
6.7 Electrical Characteristics: All Voltage Options
Limits are assured by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods.
Unless otherwise specified, MIN (minimum) and MAX (maximum) specifications in apply over the full Operating Temperature
Range and TYP (typical) values apply at T_J = 25°C, V_IN = V_OUT(NOM) + 1 V, I_OUT = 1 mA, C_OUT = 2.2 μF for 5-V parts and 4.7
μF for 3.3-V parts. FEEDBACK pin is tied to VTAP pin, OUT pin is tied to SENSE pin.
PARAMETER
TEST CONDITIONS
LP2952AI, LP2953AI,
LP2952AI-3.3, LP2953AI-3.3⁽¹⁾
MIN
TYP
MAX
LP2952I, LP2953I,
LP2952I-3.3, LP2953I-3.3
MIN TYP MAX
UNIT
REGULATOR
ûVOUT
ûT
Output voltage
temperature
coefficient
See ⁽²⁾
ûVOUT
ûV
ûVOUT
ûV
Output voltage
line regulation
T_J = 25°C
V_IN = V_OUT(NOM) + 1 V to 30 V
V_IN = V_OUT(NOM) + 1 V to 30 V
Output voltage
load regulation⁽³⁾
T_J = 25°C
I_OUT = 1 mA to 250 mA
I_OUT = 0.1 mA to 1 mA
T_J = 25°C, I_OUT = 1 mA
I_OUT = 1 mA
I_OUT = 50 mA
V_IN – V_OUT
Dropout
voltage ⁽⁴⁾
I_OUT = 50 mA
T_J = 25°C, I_OUT = 100 mA
I_OUT = 100 mA
T_J = 25°C, I_OUT = 250 mA
I_OUT = 250 mA
T_J = 25°C, I_OUT = 1 mA
I_OUT = 1 mA
T_J = 25°C, I_OUT = 50 mA
I_GND
Ground pin
current ⁽⁵⁾
I_OUT = 50 mA
T_J = 25°C, I_OUT = 100 mA
I_OUT = 100 mA
T_J = 25°C, I_OUT = 250 mA
I_OUT = 250 mA
I_GND
Ground pin
current at
dropout
V_IN = V_OUT(NOM) − 0.5 V
I_OUT = 100 μA
–40°C ≤ T_J ≤ 125°C
I_GND
Ground pin
current at
shutdown ⁽⁵⁾
T_J = 25°C, V_SHUTDOWN ≤ 1.1 V
20
100
0.03%
0.03%
0.04%
0.04%
60
60
240
240
310
310
470
470
130
130
1.1
1.1
4.5
4.5
21
21
165
165
0.1%
0.2%
0.16%
0.20%
100
150
300
420
400
520
600
800
170
200
2
2.5
6
8
28
33
210
240
105
140
20
150 ppm/°C
0.03% 0.2%
0.03% 0.4%
0.04% 0.20%
0.04% 0.30%
60
100
60
150
240
300
240
420
mV
310
400
310
520
470
600
470
800
130
170
μA
130
200
1.1
2
1.1
2.5
4.5
6
mA
4.5
8
21
28
21
33
165
210
μA
165
240
105
140 μA
I_LIMIT
ûVOUT
ûPD
Current limit
Thermal
regulation
T_J = 25°C, V_OUT = 0
V_OUT = 0
T_J = 25°C; see⁽⁶⁾
380
500
380
530
0.05
0.2
380
500
mA
380
530
0.05
0.2 %/W
(1) Drive SHUTDOWN pin with TTL or CMOS low level to shut off regulator, high level to turn on regulator.
(2) Output or reference voltage temperature coefficient is defined as the worst-case voltage change divided by the total temperature range.
(3) Load regulation is measured at constant junction temperature using low duty-cycle pulse testing. Two separate tests are performed, one
for the range of I_OUT = 100 μA to 1 mA and one for the range of I_OUT =1 mA to 250 mA. Changes in output voltage due to heating
effects are covered by the thermal regulation specification.
(4) Dropout voltage is defined as the input-to-output differential at which the output voltage drops 100 mV below the value measured with a
1-V differential. At very low values of programmed output voltage, the input voltage minimum of 2 V (2.3 V over temperature) must be
observed.
(5) Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the ground pin current,
output load current, and current through the external resistive divider (if used).
(6) Thermal regulation is the change in output voltage at a time t after a change in power dissipation, excluding load or line regulation
effects. Specifications are for a 200-mA load pulse at V_IN = V_OUT(NOM) + 15 V (3-W pulse) for t = 10 ms.
6
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