CAT3636HV3-GT2

更新时间： 2024-02-10 07:10:45

品牌	Logo	应用领域
安森美 - ONSEMI		驱动器
页数	文件大小	规格书
14页	256K
描述
6-Channel Quad-Mode Fractional LED Driver in TQFN 3x3

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CAT3636HV3-GT2 数据手册

CAT3636

Table 5. PIN DESCRIPTION

Pin #

Name

LEDC2

LEDC1

LEDB2

LEDB1

LEDA2

LEDA1

VOUT

VIN

Function

LEDC2 cathode terminal

LEDC1 cathode terminal

LEDB2 cathode terminal

LEDB1 cathode terminal

LEDA2 cathode terminal

LEDA1 cathode terminal

Charge pump output, connect to LED anodes

Charge pump input, connect to battery or supply

Bucket capacitor 1, positive terminal

Bucket capacitor 1, negative terminal

Bucket capacitor 2, positive terminal

Bucket capacitor 2, negative terminal

No connect

C1+

13/14

TAB

C1−

C2+

C2−

GND

Ground reference

EN/SET

TAB

Device enable (active high) and 1 wire control input

Connect to GND on the PCB

Pin Function

VIN is the supply pin for the charge pump. A small 1 mF

ceramic bypass capacitor is required between the VIN pin

and ground near the device. The operating input voltage

range is from 2.5 V to 5.5 V. Whenever the input supply falls

below the under−voltage threshold (2 V) all the LED

channels will be automatically disabled and the device

GND is the ground reference for the charge pump. The pin

must be connected to the ground plane on the PCB.

C1+, C1− are connected to each side of the ceramic bucket

capacitor C1.

C2+, C2− are connected to each side of the ceramic bucket

capacitor C2.

LEDxx provide the internal regulated current for each of the

LED cathodes. These pins enter high−impedance zero

current state whenever the device is placed in shutdown

mode.

EN/SET is the enable and one wire addressable control logic

input for all LED channels. Guaranteed levels of logic high

and logic low are set at 1.3 V and 0.4 V respectively. When

EN/SET is initially taken high, the device becomes enabled

and all LED currents remain at 0 mA. To place the device

into zero current mode, the EN/SET pin must be held low for

more than 1.5 ms.

TAB is the exposed pad underneath the package. For best

thermal performance, the tab should be soldered to the PCB

and connected to the ground plane.

VOUT is the charge pump output that is connected to the

LED anodes. A small 1 mF ceramic bypass capacitor is

required between the VOUT pin and ground near the device.

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