MAX8600(2005) データシートの表示（PDF） - Maxim Integrated

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MAX8600
(Rev.:2005)

Single-/Dual-Input 1-Cell Li+ Chargers with OVP Protection and Programmable Charge Timer

Maxim Integrated 

Single-/Dual-Input 1-Cell Li+ Chargers with

OVP Protection and Programmable Charge Timer

PIN

MAX8600 MAX8601

12, 13

12, 13

14

14

—

9

—

6

—

—

Pin Description (continued)

NAME

FUNCTION

DC

FLT

USB

USEL

EP

DC Input Supply. Connect DC to a 4.5V to 7V charging source. Bypass DC to GND with a 1µF

or larger capacitor. DC takes priority over USB when both are present (MAX8601). Both DC

inputs should be connected together externally.

Fault Status Output. FLT goes low when either the prequal timer or the fast-charge timers

expire and the battery voltage is not above the required threshold. Clear the fault by raising EN

or removing input power.

USB Input Source. Connect to a USB port. Bypass USB to GND with a 1µF or larger capacitor.

USB Charge-Select Input. Logic input that determines the maximum charge current drawn

from the USB input. IBAT = 95mA when USEL = low, and IBAT = 475mA when USEL = high.

Exposed Paddle. Connect to the GND plane for optimum thermal dissipation.

THM OUT OF RANGE

POK = PREVIOUS STATE

CHG = PREVIOUS STATE

IBAT = 0A

PREQUAL TIMER HELD

THM OUT OF RANGE

POK = PREVIOUS STATE

CHG = PREVIOUS STATE

IBAT = 0A

FAST-CHARGE TIMER HELD

OFF

POK = HIGH, CHG = HIGH, FLT = HIGH

IBAT = 0A

VIN < 4.1V OR

VIN < 7.5V OR

VIN < VBAT OR

EN HIGH

ANY STATE

RTHM > 3.97kΩ AND

RTHM < 28.7kΩ

RTHM < 3.97kΩ OR

RTHM > 28.7kΩ

RTHM > 3.97kΩ AND

RTHM < 28.7kΩ

RTHM < 3.97kΩ OR

RTHM > 28.7kΩ

EN LOW AND

POWER-GOOD

PREQUAL

POK = LOW, CHG = HIGH

IBAT = 150 / RSETI

VBAT < 3V AND

PREQUAL

TIMEOUT

FAULT

CHG = HIGH

FLT = LOW

VBAT > 3V

FAST-CHARGE

POK = LOW, CHG = LOW

IBAT(DC) = 1500 / RISET

IBAT(USB) = 100mA / 500mA

IBAT > 112.5 / RSETI

AND FAST-CHARGE

TIMEOUT

IBAT < 112.5 / RSETI

AND VOLTAGE MODE

TOP-OFF

POK = LOW, CHG = HIGH

TOP-OFF

TIMEOUT

DONE

POK = LOW, CHG = HIGH

IBAT = 0A

Figure 1. Charger State Diagram

6 _______________________________________________________________________________________

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