LP2953QML-SP_15 Datasheet, PDF (6/26 Pages) Texas Instruments – LP2953QML Adjustable Micropower Low-Dropout Voltage Regulators

LP2953QML, LP2953QML-SP
SNVS395C – NOVEMBER 2010 – REVISED APRIL 2013
www.ti.com
LP2953A Electrical Characteristics DC Parameters (continued)
The following conditions apply, unless otherwise specified. V_I = 6V, I_L = 1mA, C_L = 2.2µF, V_O = 5V
Feedback pin is tied to 5V Tap pin. Output pin is tied to Output Sense Pin.
Parameter
Test Conditions
Notes Min Max
I_L = 1mA
I_L = 50mA
I_Gnd
Ground Pin Current
I_L = 100mA
I_Gnd
Ground Pin Current at
Dropout
I_Gnd
Ground Pin Current at
Shutdown
I_Limit
Current Limit
ΔV_O / ΔP_D Thermal Regulation
V_Ref
Reference Voltage
I_L = 250mA
V_I = 4.5V, I_L = 100µA
V_O = 0V
ΔV_Ref / V_Ref
Reference Voltage Line
Regulation
V_I = 2.5V to 6V
V_I = 6V to 30V
ΔV_Ref / V_{Ref Reference Voltage Load}
Regulation
I_Ref = 0 to 200µA
I_{B FB}
Feedback Pin Bias
Current
I_{O Sink}
Output "Off" Pulldown
Current
See ⁽²⁾
See ⁽²⁾
See ⁽²⁾
See ⁽²⁾
See ⁽²⁾
See ^{(2) (3)}
See ⁽⁴⁾
See ⁽⁵⁾
See ⁽⁶⁾
170
200
2.0
2.5
6.0
8.0
28
33
210
240
140
1.215
1.205
30
20
500
530
0.2
1.245
1.255
0.1
0.2
0.1
0.2
0.4
0.6
40
60
Units
µA
µA
mA
mA
mA
mA
mA
mA
µA
µA
µA
mA
mA
%/W
V
V
%
%
%
%
%
%
nA
nA
mA
mA
Sub-
groups
1
2, 3
1
2, 3
1
2, 3
1
2, 3
1
2, 3
1
1
2, 3
1
1
2, 3
1
2, 3
1
2, 3
1
2, 3
1
2, 3
1
2, 3
(2) 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).
(3) V_Shutdown ≤ 1.1V, V_O = V_O(Nom).
(4) 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_I = V_O(Nom)+15V (3W pulse) for T = 10 mS.
(5) V_Ref ≤ V_O ≤ (V_I − 1V), 2.3V ≤ V_I ≤ 30V, 100 μA ≤ I_L ≤ 250 mA.
(6) V_Shutdown ≤ 1.1V, V_O = V_O(Nom).
6
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