AS3701 datasheet(32/110 Pages) AMSOSRAM

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ams Datasheet

Page 31

[v1-11] 2016-Dec-14

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AS3701 − Detailed Description – Power Management Functions

Parameters

Figure 37:

Linear Charger Electrical Characteristics

Symbol

Parameter

Note

Min

Typ

Max

Unit

ITRICKLE

Trickle current

11 steps

programmable

11..

130

VTRICKLE

Trickle to constant current

threshold

VBAT rising

2.9

ICHG

Constant current

cc_range_select = 0

44..

493

cc_range_select = 1

11..

130

@ 70mA

-8%

+8%

VEOC

Charge termination

threshold

Programmable in 20mV

steps

3.82..

4.44

end of charge is true

4.15

4.2

4.25

IEOC

EOC current level

referring to ICHG

(VSUP > 3V)

5..

IUSB_limit

VUSB input current limit

@470mA

420

470

500

VSUP_prereg

Voltage supplied from

Preregulator

Depending on the bit

vsup_voltage

4.4..

5.5

VRESUME

Resume Voltage limit to

start charger

VBAT falling threshold

referring to VEOC

(depending on bit

ChVoltResume)

3.3

5.6

VSUPMIN

VSUP level for charging

current reduction, to avoid

voltage drop on VSUP

Trickle or constant

current will be regulated

down, if VSUP drops

below this threshold

-6%

3.9

+3%

4.2

4.5

4.7

VCHDET

Charger detection

hysteresis

VUSB - VBAT

Hysteresis is > 40mV

105

VCHMIN

020

IREV_OFF

Reverse current shut down

VSUP = 5V, VUSB open

RON_BATSW

Battery switch

ON-resistance

0.4

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