LTC4065LEDC-4.1-TRPBF データシートの表示（PDF） - Linear Technology

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LTC4065LEDC-4.1-TRPBF

Standalone 250mA Li-Ion Battery Charger in 2 ×2 DFN

Linear Technology 

LTC4065L/

LTC4065LX/LTC4065L-4.1

OPERATION

POWER

ON

ENABLE

IS EN > SHUTDOWN

THRESHOLD?

YES

SHUTDOWN MODE

CHRG HIGH IMPEDANCE

UVLO

NO

IF VCC > 3.6V AND

VCC > VBAT + 80mV?

YES

UVLO MODE

NO

CHRG HIGH IMPEDANCE

VBAT ≤ 2.9V

TRICKLE CHARGE MODE*

1/10 FULL CHARGE CURRENT

CHRG STRONG PULL-DOWN

2.9V < VBAT < 4.1V (LTC4065L/LTC4065LX)

2.9V < VBAT < 4.0V (LTC4065L-4.1)

VBAT > 4.1V (LTC4065L/LTC4065LX)

VBAT > 4.0V (LTC4065L-4.1)

FAST CHARGE MODE

STANDBY MODE

FULL CHARGE CURRENT

CHRG STRONG PULL-DOWN

NO CHARGE CURRENT

CHRG HIGH IMPEDANCE

1/4 CHARGE CYCLE

NO CHARGE CYCLE

NO

(1.125 HOURS)

(4.5 HOURS)

DEFECTIVE BATTERY

IS VBAT < 2.9V?

YES

RECHARGE

IS VBAT < 4.1V? (LTC4065L/LTC4065LX)

IS VBAT < 4.0V? (LTC4065L-4.1)

YES

BAD BATTERY MODE

RECHARGE MODE

NO CHARGE CURRENT

CHRG PULSES (2Hz)

FULL CHARGE CURRENT

CHRG STRONG PULL-DOWN

VCC < 3V

OR

EN > SHDN

THRESHOLD

1/2 CHARGE CYCLE

(2.25 HOURS)

*LTC4065L and LTC4065L-4.1 ONLY; LTC4065LX HAS FULL CHARGE CURRENT.

4065L F02

Figure 2. State Diagram of LTC4065L Operation

4065lfb

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