sc2441a Semtech Corporation, sc2441a Datasheet - Page 12

• Manufacturer Part Number: sc2441a
• Description: Sc2441a 1.8v To 20v Input 2-phase Synchronous Step-down Controllers With Step-up Converter
• Manufacturer: Semtech Corporation

Typical Characteristics
POWER MANAGEMENT
2006 Semtech Corp.
-1
-2
-3
-4
-5
0.55
0.53
0.51
0.49
0.47
0.45
5
4
3
2
1
0
Amplifier Transconductance vs Temperature
-50
400
380
360
340
320
300
280
260
240
220
200
-50
-50
Percenatge Frequency Deviation
R
-25
From Nominal vs Temperature
OSC
Step-down Channel Feedback
-25
-25
= 51.1K W
0
0
Temperature (°C)
0
V
vs Temperature
Temperature (°C)
Temperature (°C)
IN
25
= 3V V
25
25
R
OSC
50
50
CC
50
= 66.5K W
= 8V
R
OSC
75
75
75
= 40.2K W
100 125
100
100
125
125
12
650
600
550
500
450
400
350
Step-down Channel Switching Frequency
400
350
300
250
200
150
100
-50
50
0
-50
80
79
78
77
76
75
74
73
72
71
70
R
R
R
Amplifier Open Loop Gain vs Temperature
OSC
OSC
OSC
-25
-50
Feedback Pin Input Bias Current vs
-25
= 40.2K W
= 51.1K W
= 66.5K W
V
-25
0
v s Temperature
COMP1
Temperature (°C)
0
Temperature (°C)
25
= 3V
0
Temperature
V
Temperature (°C)
25
COMP2
50
25
Channel 1
50
= 3V
50
75
75
Channel 2
100
75
100
SC2441A
100 125
125
www.semtech.com
125