sc4808b-1 Semtech Corporation, sc4808b-1 Datasheet - Page 7

• Manufacturer Part Number: sc4808b-1
• Description: Sc4808b-1 High-performance Dual Ended Pwm Controller
• Manufacturer: Semtech Corporation

POWER MANAGEMENT
SC4808B-1 Typical Characteristics
(SC4808B-1A)
2006 Semtech Corp.
100.0
3.22
3.21
3.19
3.18
3.17
3.16
3.90
3.85
3.80
3.75
3.70
3.65
3.60
95.0
90.0
85.0
80.0
75.0
70.0
3.2
-40
-40
-40
-25
-25
-25
-10
-10
-10
Iq (operating) vs. Temperature
Reference vs. Temperature
Iq (start up) vs. Temperature
5
5
5
20
20
20
35
35
35
Ta (°C)
Ta (°C)
Ta (°C)
50
50
50
65
65
65
80
80
80
Operating Iq, Vcc = 5V
Operating Iq, Vcc = 5.25V
Start up Iq, Vcc = 4V
Reference, Vcc = 5V
95
95
95
110
110
110
125
125
125
7
1.69
1.68
1.67
1.66
1.65
1.64
1.63
1.62
1.61
1.60
1100
1000
4.500
4.450
4.400
4.350
4.300
4.250
4.200
900
800
700
600
500
400
-40
-40
-40
-25
-25
Max Current Sense Signal
Over Current Signal
FB to CS Offset vs. Temperature
Current sense vs. Temperature
-25
Vcc UVLO vs. Temperature
-10
-10
-10
5
5
5
20
20
20
35
35
35
Ta (°C)
Ta (°C)
Ta (°C)
50
50
50
SC4808B-1
65
65
65
80
80
80
www.semtech.com
Vcc UVLO (Rising)
Vcc UVLO (Falling)
95
95
95
FB to CS Offset
110
110
110
125
125
125