LDS3985 ST Microelectronics, Inc., LDS3985 Datasheet - Page 4

• Manufacturer Part Number: LDS3985
• Description: Ultra LOW Drop-low Noise Bicmos 300ma V.reg. FOR USE WITH VERY LOW ESR Output Capacitor
• Manufacturer: ST Microelectronics, Inc.

LDS3985 SERIES
Table 5: Electrical Characteristics For LDS3985 (T
C
Note 1: For V
Note 2: For V
Note 3: Dropout voltage is the input-to-output voltage difference at which the output voltage is 100mV below its nominal value. This specifi-
cation does not apply for input voltages below 2.5V.
Note 4: Turn -on time is time measured between the enable input just exceeding V
of its nominal value
Note 5: Typical thermal protection hysteresis is 20°C
4/13
Symbol
V
BYP
T
I
SVR
O(PK)
V
DROP
I
SHDN
I
t
C
V
V
eN
INH
I
ON
V
SC
V
V
V
V
INH
Q
O
O
O
I
O
O
O
O
= 33nF, I
Operating Input Voltage
Output Voltage < 2.5V
Output Voltage
Line Regulation (Note 1)
Load Regulation
Load Regulation
Output AC Line Regulation
(Note 2)
Quiescent Current
ON MODE: V
OFF MODE: V
Dropout Voltage (Note 3)
Short Circuit Current
Supply Voltage Rejection
Peak Output Current
Inhibit Input Logic Low
Inhibit Input Logic High
Inhibit Input Current
Output Noise Voltage
Turn On Time (Note 4)
Thermal Shutdown
Output Capacitor
O(NOM)
O(NOM)
O
< 2V V
=1.25V V
Parameter
= 1mA, V
I
INH
= 2.5V
INH
I
= 2.5V
= 1.24V
2.5V
= 0.4V
INH
= 1.4V, unless otherwise specified)
I
T
I
T
V
V
I
T
I
T
V
t
I
I
I
I
T
I
I
I
I
I
I
R
V
V
For V
V
V
V
B
C
Note 5
Capacitance (Note 6)
ESR
O
O
O
O
R
O
O
O
O
O
O
O
O
O
O
J
J
J
J
J
I
O
I
I
RIPPLE
O
I
INH
W
L
BYP
= t
= -40 to 125°C
= -40 to 125°C
= -40 to 125°C
= -40 to 125°C
= -40 to 125°C
= 1 mA
= 1 mA
= V
= 1 mA to 300mA
= 1 mA to 300mA
= V
= 0
= 0
= 0 to 300mA
= 0 to 300mA
= 1mA
= 1mA
= 150mA
= 150mA
= 300mA
= 300mA
= V
= 2.5V to 6V
= 0
= 4.7 to 5V
= 10 Hz to 100 KHz
F
= 0.4V
V
O(NOM)
= 33 nF
O(NOM)
O(NOM)
= 30µs
O(NOM)
O(NOM)
= 0.1V,
Test Conditions
+0.25V ±
< 2.5V, V
+ 0.5 to 6 VT
+ 1 V, I
- 5%
I
O
O
= 50mA
j
I
= 25°C, V
= 300mA,
=2.55V
T
T
T
T
T
V
T
J
J
J
J
J
I
= -40 to 125°C
= -40 to 125°C
= -40 to 125°C
= -40 to 125°C
= -40 to 125°C
J
= 6V
= -40 to 125°C
J
= -40 to 125°C
V
V
C
f = 1KHz
f = 10KHz
INH
O
O
O
I
= 2.2 F
High Value and the output voltage just reaching 95%
= V
2.5V
2.5V
O(NOM)
-0.19
Min.
-0.1
300
-50
-75
2.5
1.4
2.2
-2
-3
+0.5V, C
5
0.0008
0.005
0.003
Typ.
200
150
600
550
240
160
0.4
85
60
55
50
±1
30
5
I
= 1 F, C
0.004
Max.
5000
0.19
0.01
150
300
100
250
0.1
1.5
0.4
50
75
22
6
2
3
2
O
= 2.2 F
V
%/mA
%/mA
mV
O(NOM)
% of
Unit
%/V
V
mV
mV
mA
mA
m
µA
dB
nA
µF
°C
V
V
RMS
s
PP