FAN5400 View Datasheet(PDF) - Fairchild Semiconductor

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FAN5400

USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator

Fairchild Semiconductor 

Boost Mode Typical Characteristics

Unless otherwise specified, using circuit of Figure 1, VBAT=3.6V, TA=25°C.

Figure 27. Boost PWM Waveform

30

25

20

15

10

5

0

0

2.7VBAT

3.6VBAT

4.2VBAT

4.5VBAT

50

100

150

200

250

300

VBUS Load Current (mA)

Figure 29. Output Ripple vs. VBAT

Figure 28. Boost PFM Waveform

30

25

20

15

10

5

0

0

-30C, 3.6VBAT

+25C, 3.6VBAT

+85C, 3.6VBAT

50

100

150

200

250

300

VBUS Load Current (mA)

Figure 30. Output Ripple vs. Temperature

© 2009 Fairchild Semiconductor Corporation

FAN5400 Family • Rev. 1.0.7

15

www.fairchildsemi.com

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