Datasheet

LP2980-N
SNOS733M –APRIL 2000–REVISED JUNE 2013 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Limits in standard typeface are for T
J
= 25°C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: V
IN
= V
O(NOM)
+ 1V, I
L
= 1 mA, C
OUT
= 1 μF, V
ON/OFF
= 2V.
Symbol Parameter Conditions Typ LP2980AI-XX
(1)
LP2980I-XX
(1)
Units
Min Max Min Max
I
L
= 0 95 95
65
125 125
I
L
= 1 mA 110 110
80
170 170
I
GND
Ground Pin Current I
L
= 10 mA 220 220 μA
140
460 460
I
L
= 50 mA 600 600
375
1200 1200
V
ON/OFF
< 0.18V 0 1 1
V
ON/OFF
ON/OFF Input Voltage
(3)
High = O/P ON 1.4 1.6 1.6
V
Low = O/P OFF 0.55 0.18 0.18
I
ON/OFF
ON/OFF Input Current V
ON/OFF
= 0 0 −1 −1
μA
V
ON/OFF
= 5V 5 15 15
I
O(PK)
Peak Output Current V
OUT
≥ V
O(NOM)
− 5% 150 100 100 mA
e
n
Output Noise Voltage BW = 300 Hz–50 kHz, C
OUT
160 μV
(RMS) = 10 μF
f = 1 kHz
Ripple Rejection 63 dB
C
OUT
= 10 μF
I
O(MAX)
Short Circuit Current R
L
= 0 (Steady State)
(4)
150 mA
(3) The ON/OFF inputs must be properly driven to prevent misoperation. For details, refer to ON/OFF INPUT OPERATION.
(4) See related curve(s) in TYPICAL PERFORMANCE CHARACTERISTICS section.
Typical Application Circuit
*ON/OFF input must be actively terminated. Tie to V
IN
if this function is not to be used.
**Minimum Output Capacitance is 1 μF to insure stability over full load current range. More capacitance provides
superior dynamic performance and additional stability margin (see APPLICATION HINTS).
***Do not make connections to this pin.
Figure 3.
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