10 2008 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC1453
Dropout Voltage vs. Junction Temperature
vs. Output Current
Dropout Voltage vs. Output Current
vs. Junction Temperature
Typical Characteristics (Cont.)
Bypass Start-up Rise Time vs. Junction Temperature
vs. Input Voltage
Enable Input Threshold Voltage vs. Junction
Temperature vs. Input Voltage
Reverse Battery Protection vs.
Junction Temperature
Output Spectral Noise Density vs. Frequency
vs. Output Voltage, C
OUT
= 1µF
0
25
50
75
100
125
150
175
200
-50 -25 0 25 50 75 100 125
T
J
(°C)
V
D
(mV)
I
OUT
= 150mA
I
OUT
= 50mA
0
25
50
75
100
125
150
175
200
0 25 50 75 100 125 150
I
OUT
(mA)
V
D
(mV)
Top to bottom:
T
J
= 125°C
T
J
= 25°C
T
J
= -40°C
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
-50 -25 0 25 50 75 100 125
T
J
(°C)
t
r
(ms)
C
BYP
= 10nF
V
IN
= 3.8V
V
IN
= 6.5V
0.4
0.6
0.8
1.0
1.2
1.4
1.6
-50 -25 0 25 50 75 100 125
T
J
(°C)
V
EN
(V)
V
IH
@ V
IN
= 6.5V
V
IH
@ V
IN
= 3.8V
V
IL
@ V
IN
= 6.5V
V
IL
@ V
IN
= 3.8V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-50 -25 0 25 50 75 100 125
T
J
(°C)
I
(REV BAT)
(mA)
V
IN
= V
EN
= -6.5V
0.001
0.01
0.1
1
10
0.01 0.1 1 10 100 1000
f (kHz)
e
n
(µV/
√
Hz)
V
IN
= V
OUT
+ 1V
I
OUT
= 1mA
C
IN
= 1µF
C
BYP
= 10nF
T
J
= 25°C
Top to bottom:
V
OUT
= 3.3V
V
OUT
= 3.0V
V
OUT
= 2.8V
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.5V
NOT RECOMMENDED FOR NEW DESIGN
NOT RECOMMENDED
FOR NEW DESIGN
