sc1452 Semtech Corporation, sc1452 Datasheet - Page 11

• Manufacturer Part Number: sc1452
• Description: Sc1452 Dual 150 Ma Ldo Regulator With Programmable Reset
• Manufacturer: Semtech Corporation

POWER MANAGEMENT
Typical Characteristics (Cont.)
Bypass Start-up Rise Time vs. Junction Temperature
2006 Semtech Corp.
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
200
175
150
125
100
0.01
75
50
25
0.1
10
0
1
-50
0.01
-50
C
V
I
C
C
C
T
OUT
BYP
IN
J
IN
BYP
OUT
Output Spectral Noise Density vs.
= 25°C
= V
= 1µF
= 50mA
= 10nF
= 10nF
= 2.2µF
Frequency vs. Output Voltage
-25
-25
OUT
vs. Junction Temperature
0.1
+ 1V
Reset Delay Times
vs. Input Voltage
0
0
1
25
25
Top to bottom:
V
V
V
V
V
t
t
t
OUT
OUT
OUT
OUT
OUT
T
f (kHz)
T
RSTB
RSTA
RSTB
J
J
(°C)
(°C)
= 3.3V
= 3.0V
= 2.8V
= 2.5V
= 1.8V
, DLYB = 0V
, C
50
50
DLYB
10
V
V
IN
IN
= 10nF
= 4V
= 6.5V
V
OUT
75
75
+ 1V
100
V
100
100
IN
6.5V
1000
125
125
11
94
93
92
91
90
89
88
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
0.001
0.01
Output Spectral Noise Density vs. Frequency
Delay Source Current and Voltage Threshold
0.1
-50
10
-50
1
0.01
V
OUT
V
V
I
C
C
T
OUT
OUT
IN
J
BYP
IN
+ 1V
= 25°C
-25
= 4V
= 1µF
-25
= 50mA
= 10nF
= 3V
vs. Junction Temperature
vs. Junction Temperature
Reset Threshold Voltage
vs. Output Capacitance
V
0.1
IN
0
6.5V
0
V
V
OUT
OUT
25
rising
falling
T
J
25
1
(°C)
T
f (kHz)
J
50
(°C)
Left to right:
C
C
C
C
OUT
OUT
OUT
OUT
50
= 44µF
= 22µF
= 10µF
= 2.2µF
10
75
I
V
DLYB
TH(DLYB)
75
100
SC1452
www.semtech.com
100
100
125
1.275
1.270
1.265
1.260
1.255
1.250
1.245
1.240
1.235
1.230
1.225
1000
125