LTC4066EPFPBF View Datasheet(PDF) - Linear Technology

Part Name

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LTC4066EPFPBF

USB Power Controller and Li-Ion Linear Charger with Low Loss Ideal Diode

Linear Technology 

LTC4066/LTC4066-1

APPLICATIONS INFORMATION

to make thermal contact between the Exposed Pad on the

backside of the package and the copper board will result

in thermal resistances far greater than 37°C/W. As an

example, a correctly soldered LTC4066/LTC4066-1 can

deliver over 1A to a battery from a 5V supply at room

temperature. Without a backside thermal connection, this

number could drop to less than 500mA.

Furthermore, Pins 6 and 7 are “true No Connect” pins.

Therefore, they can be used to improve the amount of

metal used to connect to Pin 5 or Pin 8.

VIN and Wall Adapter Bypass Capacitor

Many types of capacitors can be used for input bypassing.

However, caution must be exercised when using multilayer

ceramic capacitors. Because of the self resonant and high

Q characteristics of some types of ceramic capacitors, high

voltage transients can be generated under some start-up

conditions, such as connecting the charger input to a hot

power source. For more information, refer to Application

Note 88.

Stability

The constant-voltage mode feedback loop is stable without

any compensation when a battery is connected. However,

a 4.7μF capacitor with a 1Ω series resistor to GND is

recommended at the BAT pin to keep ripple voltage low

when the battery is disconnected.

4066fc

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