88EM8040 Datasheet, PDF (25/48 Pages) –

Functional Characteristics
Over Current Threshold Characteristics
4.4
Over Current Threshold Characteristics
Figure 14: Over Current (V_IOVER) vs. Input Voltage
V_IN Peak Value)
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0
1
1
2
2
3
3
4
4
5
5
VIN (V)
Test Conditions:
„ V_DD = 12V
„ F_SW = 118kHz
„ V_FB = 2.4V
„ C_Gate = 1nF
„ V_I_sns = 0V
Figure 15: Over Current (V_IOVER) vs. Temperature
450
400
VIN = 1.5V
350
VIN = 2.25V
300
VIN = 3V
250
VIN = 3.7V
200
150
100
50
0
-40
-20
0
20
40
60
80
Temperature ( C)
Test Conditions:
„ V_DD = 12V
„ F_SW = 118kHz
„ V_FB = 2.4V
„ C_Gate = 1nF
„ V_I_sns = 0V
Copyright © 2009 Marvell
October 5, 2009, Preliminary
Document Classification: Proprietary
Doc. No. MV-S104983-01 Rev. A
Page 25