1.2MHz, Low-Cost,

High-Performance Chargers

6

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

unless otherwise noted.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

REFERENCES

VAA Output Voltage

4.18

4.22

V

VAA UVLO Threshold

3.9

V

ACIN

ACIN Threshold

2.058

2.142

V

ACIN Threshold Hysteresis

10

30

mV

ACOK

ACOK Sink Current

6

mA

SWITCHING REGULATOR

DHI Off-Time K Factor

0.029

0.041

μs/V

Cycle-by-Cycle Current-Limit Sense Voltage

105

115

mV

DHI Resistance High

3

DHI Resistance Low

1.75

DLO Resistance High

6

DLO Resistance Low

7

ADAPTER DETECTION

Adapter Absence-Detect Threshold

+70

+170

mV

Adapter Detect Threshold

+320

+620

mV

Adapter Switch Charge-Pump Frequency

180

220

Hz

DLO

0.04

0.2

Adapter Switch Charge-Pump Refresh Pulse

DHI

0.07

0.3

μs

Note 1: Accuracy does not include errors due to external resistance tolerances.