ld3980 STMicroelectronics, ld3980 Datasheet - Page 6

• Manufacturer Part Number: ld3980
• Description: Low Drop - Low Supply Voltage Low Esr Capacitor Compatible
• Manufacturer: STMicroelectronics

Electrical characteristics
4
Table 4.
Note:
6/16
Symbol
V
V
T
I
I
SVR
O(PK)
SHDN
∆V
∆V
T
DROP
SHDN
SHDN
I
C
V
e
V
I
SC
ON
Q
O
N
O
I
O
O
2
3
4
1
Operating input voltage
V
Line regulation
Load regulation
Dropout voltage (
Output noise voltage
Supply voltage rejection
(
Quiescent current
ON MODE: V
Quiescent current
OFF MODE: V
Short circuit current
Peak output current
Shutdown input logic low
Shutdown input logic high
Shutdown input current
Turn on time
Thermal shutdown
Output capacitor
Figure 7.
O
Electrical characteristics
Electrical characteristics (T
V
For V
Dropout voltage is the input-to-output voltage difference at which the output voltage is
100mV below its nominal value. This specification does not apply for output voltages below
1.7V.
Turn-on time is time measured between the enable input just exceeding V
and the output voltage just reaching 95% of its nominal value
Typical thermal protection hysteresis is 15°C.
Accuracy
SHDN
Parameter
O(NOM)
)
= V
SHDN
I
SHDN
, unless otherwise specified) (
< 1.2V, V
Note 2
=1.4V
=GND
)
I
=1.7V
I
T
V
I
I
T
10Hz to 100KHz, I
V
V
V
V
I
I
I
I
V
R
V
V
V
Note 3
Note 4
Capacitance
ESR
O
O
O
O
O
O
O
J
J
O
I
I
RIPPLE
IN
RIPPLE
I
L
I
SHDN
=0mA
=0mA, T
=0 to 300mA
=0 to 300mA, T
= 300mA
= V
= 1mA to 300mA
= 300mA, V
= V
input current
=0
= 1.6V to 3.6V T
= -40° to 85°C
= -40° to 85°C
≥ V
= V
O
O(NOM)
=GND or V
O(NOM)
O(NOM)
J
+ 0.5V to 3.6V, I
= 0.1V, f = 1KHz, I
= 0.1V, f=10KHz, I
= 25°C, V
Test conditions
J
= -40° to 85°C
+0.5V
+0.5V
-5%
O
≥
J
I
O
1.8V
±
= -40° to 85°C
J
V
I
±
Note: 1
= 10mA,
= -40° to 85°C
= V
V
RIPPLE
RIPPLE
O
O(NOM)
= 1mA
O
O
)
= 10mA
= 10mA
+0.5V, C
-0.15
Min.
-1.0
-2.0
1.7
1.4
10
1
I
= C
O
110.7
Typ.
0.01
0.15
130
105
650
610
120
140
0.2
0.1
60
58
90
= 1µF, I
SHDN
+0.15
Max.
5000
+1.0
+2.0
150
110
130
100
O
3.6
0.3
0.5
0.4
10
= 1mA,
High Value
µV
%/mA
LD3980
RMS
Unit
%/V
mV
mA
mA
mΩ
dB
µA
nA
µF
µs
°C
%
V
V
/V
O