ISL88731 View Datasheet(PDF) - Intersil

Part Name

Description

View to exact match

ISL88731

SMBus Level 2 Battery Charger

Intersil 

ISL88731

Typical Operating Performance DCIN = 20V, 3S2P Li-Battery, TA = +25°C, unless otherwise noted. (Continued)

UGATE

LGATE

UGATE

PHASE

INDUCTOR

CURRENT

FIGURE 9. SWITCHING WAVEFORMS AT DIODE EMULATION

INDUCTOR

CURRENT

LGATE

PHASE

FIGURE 10. SWITCHING WAVEFORMS IN CC MODE

CSON/

V BATTERY

CSON/

V BATTERY

BATTERY

CURRENT

BATTERY

CURRENT

FIGURE 11. BATTERY REMOVAL

ADAPTER

CURRENT

SYSTEM

LOAD

BATTERY

VOLTAGE

CHARGE

CURRENT

FIGURE 13. LOAD TRANSIENT RESPONSE

FIGURE 12. BATTERY INSERTION

100

95

90

16.8V BATTERY

85

12.6V BATTERY

80

8.4V BATTERY

75

70

4.2V BATTERY

0

2

4

6

8

CHARGE CURRENT (A)

FIGURE 14. EFFICIENCY vs CHARGE CURRENT AND

BATTERY VOLTAGE (EFFICIENCY DCIN = 20V)

7

FN9258.0

November 20, 2006

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