FAN5331 Datasheet, PDF (4/10 Pages) Fairchild Semiconductor – 1.6MHz Boost Converter with 20V Integrated FET Switch

Typical Performance Characteristics
T_A = 25°C, Test Circuit Figure 3, unless otherwise noted.
Output Voltage vs Input Voltage
14.98
Maximum Load Current vs Input Voltage
350
14.96
14.94
14.92
14.90
14.88
VIN(V) vs VOUT(V) at Iload=0mA
VIN(V) vs VOUT(V), at load=10mA
VIN(V) vs VOUT(V), at load=20mA
VIN(V) vs VOUT(V) at Iload=30mA
VIN(V) vs VOUT(V) at Iload=40mA
VIN(V) vs VOUT(V) at Iload=50mA
14.86
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Input Voltage (V)
300
250
200
150
100
50
0
2.5
= ^12V
V OUT
= ^15V
V ^OUT
= ^21V
VOUT
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage (V)
Efficiency vs Input Voltage
0.92
0.90
0.88
0.86
0.84
0.82
0.80
0.78
0.76
0.74
VIN(V) vs Efficiency at Iload =10mA
VIN(V) vs Efficiency at Iload =20mA
VIN(V) vs Efficiency at Iload =30mA
VIN(V) vs Efficiency at Iload =40mA
VIN(V) vs Efficiency at Iload =50mA
0.72
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Supply Current vs Input Voltage
3.0
2.5
I_OUT = 0mA
2.0
Switching
1.5
Non Switching
1.0
0.5
0.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Feedback Voltage vs Ambient Temperature
1.25 _{IOUT = 15mA}
1.24
1.23
1.22
1.21
-50
Temperature (°C) vs Vf (Vin=2.7V, Iload=15mA)
Temperature (°C) vs Vf (Vin=3.6V, Iload=15mA)
Temperature (°C) vs Vf (Vin=5.5V, Iload=15mA)
0
50
100
Ambient Temperature (ºC)
150
Switching Frequency vs Ambient Temperature
1.8
I_OUT = 15mA
V_OUT = 15V
V_IN = 3.6V
1.6
1.4
1.2
1.0
-40 -20
0 20 40 60 80 100 120 140
Ambient Temperature (ºC)
4
www.fairchildsemi.com
FAN5331 Rev. 1.0.1