sc4808b-1 Semtech Corporation, sc4808b-1 Datasheet - Page 8

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

POWER MANAGEMENT
SC4808B-1 Typical Characteristics (Cont.)
2006 Semtech Corp.
100
3.170
3.165
3.160
3.155
3.150
3.145
3.140
3.135
3.130
3.125
3.120
140
135
130
125
120
115
110
105
100
98
96
94
92
90
88
86
84
-40
-40
-40
Line UVLO Hysteresis vs. Temperature
Vcc UVLO Hysteresis vs. Temperature
-25
-25
-25
-10
-10
-10
Line UVLO vs. Temperature
5
5
5
20
20
20
35
35
Ta (°C)
35
Ta (°C)
Ta (°C)
50
50
50
65
65
65
80
80
80
Vcc UVLO (Hysteresis)
LUVLO (Hysteresis)
95
95
95
LUVLO (Rising)
110
110
110
125
125
125
8
664
662
660
658
656
654
652
650
1400
1200
1000
49.5
49.5
49.5
49.4
49.4
49.4
49.4
49.4
Synchronization Frequency vs. Temperature
800
600
400
200
-40
-40
-40
Maximum Duty Cycle vs. Temperature
Oscillator Frequency vs. Temperature
-25
Oscillator Frequency 1MHz
Oscillator Frequency 500kHz
-25
-25
-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
Sync. Frequency @ Fosc = 500kHz
80
80
80
www.semtech.com
Maximum Duty Cycle
95
95
95
110
110
110
125
125
125