SC4905B Semtech Corporation, SC4905B Datasheet - Page 14

• Manufacturer Part Number: SC4905B
• Description: Sc4905b High-performance Voltage-mode Pwm Controller | Semtech
• Manufacturer: Semtech Corporation

POWER MANAGEMENT
SC4905A Typical Characteristics
(SC4808A)
2006 Semtech Corp.
78
76
74
72
70
68
66
64
3.200
3.100
3.000
2.900
2.800
2.700
2.600
4.025
4.020
4.015
4.010
4.005
4.000
3.995
-40
-40
-40
-25
-25
-25
-10
Idd (operating) vs. Temperature
Reference vs. Temperature
Iq (start up) vs. Temperature
-10
-10
5
5
5
20
20
20
35
Ta (°C)
35
35
Ta (°C)
Ta (°C)
50
50
50
65
65
65
Reference, Iref = 0mA, Vdd = 5V
Reference, Iref = 5mA, Vdd = 5V
80
80
80
Start up Iq, Vdd = 3V
Idd Active, Vdd = 4V
95
95
95
110
110
110
125
125
125
14
65
60
55
50
45
40
35
198
197
196
195
194
193
192
191
190
4.55
4.50
4.45
4.40
4.35
4.30
4.25
4.20
4.15
-40
Current Limit bias current vs. Temperature
-40
-40
-25
-25
-25
Vdd UVLO vs. Temperature
Current Limit vs. Temperature
Current limit rising
-10
-10
-10
5
5
5
20
20
20
35
35
Ta (°C)
35
Ta (°C)
Ta (°C)
50
50
50
SC4905A/B
65
65
65
80
80
Current limit Input current
80
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Vdd UVLO (Rising)
Vdd UVLO (Falling)
95
95
95
110
110
110
125
125
125