DS2711Z datasheet(6/15 Pages) MAXIM

Nome de Peças	DS2711Z

Descrição Electrónicos	Loose Cell NiMH Chargers

PDF	15 Pages

Scroll/Zoom	100%

Fabricante Electrônico	MAXIM [Maxim Integrated Products]

Página de início	https://www.maximintegrated.com/en.html

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6 / 15 page

DS2711/DS2712: Loose Cell NiMH Charger

6 of 15

Figure 2. STATE DIAGRAM

POR

Standby power

CCx = Hi-Z

LEDx = Hi-Z

VDD > VPOR (3.7V)

Presence

TEST

CCx = Hi-Z

LEDx = No Battery

VBAT < 1.65V

t < PCTimeout

VBAT < 1V

VBAT > 1.75V

T < 0C

T > 45C

VDD < VPOR -VHYS

(asynchronously from

anywhere)

PreCHG

CCx = Active

12.5% Par., 25% Ser.

LEDx = Charging

FAULT

Standby power

CCx = Hi-Z

LEDx = Fault

FAIL:

VON - VOFF > VCTST

Cell Test

CCx = Hi-Z

LEDx = Charging

T > 50

Fast

CHG

t < Fast Timeout

Topoff

CHG

t < Topoff Timeout

delta-V detect

t > Fast Timeout

MAINT

CCx = Active 1/64

LEDx = Maintenance

T > 50

t > Topoff Timeout

t > PCTimeout

OR T < 0

OR T > 50

OR VBAT > 1.75V

VBAT > 1.75V

(asynchronously

from anywhere)

PASS

32 clock

interval

VBAT > 1V

AND

t < PCTimeout

AND

T < 50C

CCx = Active

12.5% Par., 25% Ser.

LEDx = Charging

CCx = Active

48% Par., 97% Ser.

LEDx = Charging

VBAT > 1.75V

t < 1s

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