EFFICIENCY GRAPHS
SMB135
100
95
90
85
80
75
3
Figure 5: SMB135 QFN Efficiency vs Voltage
VIN=5V, IFCHG=500mA, F=1.25MHz, TA=25°C
Taiyo Y 4.7uH
TDK 6.8uH
3.2 3.4 3.6 3.8
4
4.2
VBATT (V)
Figure 6: SMB135 QFN Efficiency vs Voltage
VIN=5V, IFCHG=500mA, L=6.8uH (TDK:VLF4012), TA=25°C
100
95
90
85
80
75
3
3.2
3.4
3.6
3.8
4
4.2
VBATT (V)
1.25MHz
1MHz
750kHz
Summit Microelectronics, Inc
2106 3.1 11/4/2008
11