SC4808B Semtech Corporation, SC4808B Datasheet - Page 10

• Manufacturer Part Number: SC4808B
• Description: Sc4808b High-performance Dual Ended Pwm Controller | Semtech
• Manufacturer: Semtech Corporation

POWER MANAGEMENT
SC4808B Typical Characteristics
(SC4808A)
2005 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
10
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
SC4808A/B
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