MAX8600 Просмотр технического описания (PDF) - Maxim Integrated

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производитель

MAX8600

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

C1

AC 1μF

ADAPTER

+5V

R3, R4

100kΩ

DC

FLT

POK

GND

CHG

MAX8600 BAT

OFF

ON

EN

THM

SETI

CT

R1

2kΩ

D1

GREEN LED

R5

1kΩ

CHARGE

STATUS

C3

2.2μF

R2

10kΩ

Li+

C4

0.068μF

Figure 3. Stand-Alone Li+ Battery-Charger with the MAX8600

DC Input Sources

The MAX8600/MAX8601 operating input voltage range

is 4.15V to 7V. The device survives input voltages up to

16V without damage to the IC. If the input voltage is

greater than 7.5V (typ), the IC stops charging. An

appropriate power supply must provide at least 4.2V

plus the voltage drop across the internal pass transistor

when sourcing the desired maximum charging current.

VIN(MIN) > 4.2V + ICHARGE(MAX) x RON

where RON is the input-to-BAT resistance (typically

0.5Ω). Failure to meet this requirement results in an

incomplete charge or increased charge time.

Stand-Alone Li+ Charger

The MAX8600 provides a complete Li+ charging solu-

tion. Figure 3 shows the MAX8600 as a stand-alone Li+

battery charger. The 2kΩ resistor connected to SETI

sets a charging current of 750mA. The LED indicates

when fast-charge has begun. When fast-charge is com-

plete, the LED turns off.

USB-Powered Li+ Charger (MAX8601)

The universal serial bus (USB) provides a high-speed

serial communication port as well as power for the

VBUS

C1

1μF

GND

500mA

USB PORT

R1

2kΩ

VI/O

R3, R4

100kΩ

USB

FLT

POK

GND

CHG

DC MAX8601 BAT

USEL

EN

THM

SETI

CT

R5

100kΩ

C2

2.2μF

R2

Li+

10kΩ

C3

0.068μF

SYSTEM

D+

D-

Figure 4. USB Battery Charger with the MAX8601

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