SI9730 datasheet(4/15 Pages) VISHAY

4 / 15 page

www.vishay.com

Document Number: 70658

S-40135-Rev. F, 16-Feb-04

Vishay Siliconix

Si9730

End of Life. Last Available Purchase Date is 31-Dec-2014

TIMING DIAGRAMS

Figure 1. OC Load Detect

tOCC

VSS

VM Waveform

DCO Waveform

200 mV

High

VSS

50 %

100 nS

Figure 2. Current-Limit Comparator Response Time

Figure 4. DL2 Time (Over-Charge)

Figure 6. Power-Down Charger Detect Threshold

VSS

IS Input

VSS

VDD

DCO Waveform

60 mV

50 %

100 nS

tILIMIT

VSS

t30

VC2 Waveform

C Waveform

4.0 V

4.4 V

DL20C

131

VCHPD

VSS

VM Waveform

High

Low

DCO Waveform

VCHPD = VSS - VM at DCO Transition

−

Figure 3. Reset Threshold

Figure 5. DL2 Time (Over-Discharge)

Figure 7. Load Detection in Overcharge Mode

VSS

VRTH

VDD

VM Waveform

(After Short is

Removed)

VDD

VSS

DCO Waveform

VRTH = VM - VSS at DCO Transition

VSS

t30

VC2 Waveform

C Waveform

2.0 V

2.6 V

DL20DC

131

VSS

VM Waveform

^VRTH

DCO Waveform

VSS

VDD

tpw

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