FAN5660 Fairchild Semiconductor, FAN5660 Datasheet - Page 5

• Manufacturer Part Number: FAN5660
• Description: Monolithic Inductorless CMOS DC/DC Converter
• Manufacturer: Fairchild Semiconductor

Typical Applications Diagrams
Unless otherwise specified T
REV. 1.0.2 3/28/02
100
1.2
1.0
0.8
0.6
0.4
0.2
60
55
50
45
40
90
80
70
60
0
1.5
1
1
FC = V+,
LV = GND
LV to
GND
LV to GND
Efficiency vs. Operating Frequency
2
Supply Current vs. Supply Voltage
2
Supply Voltage, FC to V+
2.5
Oscillator Frequency vs.
Operating Frequency (kHz)
Supply Voltage (V)
Supply Voltage (V)
3
3
A
=25°C,V+=5V, C1=C2=100µF, Iload=0, FC and LV open, using circuit in Figure 1
FC = V+
FC and LV open
Iload = 10mA
3.5
10
Iload = 80mA
4
4
Iload = 1mA
4.5
5
5
100
5.5
6
1.00
0.95
0.90
0.85
0.80
0.75
0.70
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
7
6
5
4
3
1.5
1
0
Supply Current vs. Oscillator Frequency
Oscillator Frequency vs. Supply Voltage
2
V+ = 1.5V
20
LV to
GND
Efficiency vs. Load Current
2.5
Oscillator frequency (kHz)
40
Supply Voltage (V)
Load Current (mA)
3
3.5
10
60
V+ = 2.5V
4
80
4.5
V+ = 3.5V
V+ = 4.5V
V+ = 5.5V
100
5
FAN5660
100
5.5
120
5