AS3715 datasheet(53/160 Pages) AMSCO

53 / 160 page

ams Datasheet, Confidential

Page 53

[v1-00] 2014-Sep-10

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AS3715 − Detailed Description – Power Management Functions

Charger Parameter: Shows the key electrical parameter of the charger and power paths.

ICC

CC current limit

Programmable in 50mA steps

350..

1500

Linear charging mode

-10

+10

IUSB_limit

USB input current limit

@ 470mA

-7%

470

+6%

VRESUME

Resume voltage limit to

start charger

VBAT falling threshold relative

to ChVoltEOC (depending on

ChVoltResume)

-3.3

-5.6

VSUP_min

VSUP level for charging

current regulation

(reduction), to avoid

voltage drop on VSUP

Trickle current (or constant

current in linear mode) will be

regulated down, if VSUP drops

below this level

-6%

3.9

4.2

4.5

4.7

IREV_OFF

Reverse current shut down

VSUP_CHG = 5V, VUSB open

μA

VDiode

Ideal Diode start voltage

RON_BATSW

Battery Switch

ON-resistance

0.20

Temp Supervision

IBATTEMP

NTC Bias Current

100kΩ NTC

10kΩ NTC

-15%

150

+15

μA

XOFF Overvoltage Protection

VCHOVH

VUSB Overvoltage

Detection

monitor voltage on VUSB,

disable charging beyond this

voltage (200mV hysteresis)

6.2

+3%

-3%

6.0

VXOFF_min

Minimum XOFF voltage for

charger startup

7.5

VXOFF_REG

Regulation voltage for

XOFF pin

IXOFF

External pull down current

on XOFF pin

Connect XOFF pin to MOSFET

gates only

100

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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