© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN53600 / FAN53610 • Rev. 1.0.0 7
FAN53600 / FAN53610 — 3MHz, 600mA / 1A Synchronous Buck Regulator
Typical Performance Characteristics (Continued)
Unless otherwise noted, V
IN
= V
EN
= 3.6 V, V
MODE
= 0 V (AUTO Mode), and T
A
= 25°C.
0
100
200
300
400
500
2.5 3.0 3.5 4.0 4.5 5.0 5.5
Load Current (mA)
Input Voltage (V)
PWM
PFM
0
100
200
300
400
500
2.5 3.0 3.5 4.0 4.5 5.0 5.5
Load Current (mA)
Input Voltage (V)
PWM
PFM
Figure 16. PFM / PWM Boundary vs. Input Voltage,
V
OUT
=1.82 V
Figure 17. PFM / PWM Boundary vs. Input Voltage,
V
OUT
=1.23 V
10
15
20
25
30
35
40
2.53.03.54.04.55.05.5
Input Current (
μ
A)
Input Voltage (V)
- 40C, EN=VIN
+25C, EN=VIN
+85C, EN=VIN
- 40C, EN=1.8V
+25C, EN=1.8V
+85C, EN=1.8V
10
15
20
25
30
35
40
2.5 3.0 3.5 4.0 4.5 5.0 5.5
Input Current (
μ
A)
Input Voltage (V)
- 40C, EN=VIN
+25C, EN=VIN
+85C, EN=VIN
- 40C, EN=1.8V
+25C, EN=1.8V
+85C, EN=1.8V
Figure 18. Quiescent Current vs. Input Voltage and
Temperature, V
OUT
=2.9 V, EN=V
IN
Solid, Dotted for
EN=1.8 V
Figure 19. Quiescent Current vs. Input Voltage and
Temperature, V
OUT
=1.82 V, EN=V
IN
Solid, Dotted for
EN=1.8 V
0
5
10
15
20
25
2.53.03.54.04.55.05.5
Input Current (mA)
Input Voltage (V)
- 40C
+25C
+85C
0
5
10
15
20
25
2.5 3.0 3.5 4.0 4.5 5.0 5.5
Input Current (mA)
Input Voltage (V)
- 40C
+25C
+85C
Figure 20. Quiescent Current vs. Input Voltage and
Temperature, V
OUT
=2.9 V, Mode=EN=V
IN
(FPWM)
Figure 21. Quiescent Current vs. Input Voltage and
Temperature, V
OUT
=1.82 V, Mode=EN=V
IN
(FPWM)