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CAT3616HV4-T2

更新时间： 2024-02-10 13:38:00

品牌	Logo	应用领域
CATALYST		显示驱动器驱动程序和接口接口集成电路泵
页数	文件大小	规格书
14页	520K
描述
6-Channel Charge Pump LED Driver with EZDimTM

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CAT3616HV4-T2 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	QFN
包装说明：	4 X 4 MM, 0.80 MM HEIGHT, HALOGEN FREE AND ROHS COMPLIANT, MO-220, TQFN-16	针数：	16
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.34
接口集成电路类型：	LED DISPLAY DRIVER	JESD-30 代码：	S-XQCC-N16
JESD-609代码：	e3	长度：	4 mm
湿度敏感等级：	1	复用显示功能：	NO
功能数量：	1	区段数：	6
端子数量：	16	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装等效代码：	LCC16,.16SQ,25
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	3.3/5 V
认证状态：	Not Qualified	座面最大高度：	0.8 mm
子类别：	Display Drivers	最大供电电压：	5.5 V
最小供电电压：	3 V	标称供电电压：	3.6 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Tin (Sn)	端子形式：	NO LEAD
端子节距：	0.65 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	4 mm
Base Number Matches：	1

CAT3616HV4-T2 数据手册

CAT3616

LED CURRENT SETTING

The LED current is controlled by toggling the input

signals E¯N¯M¯ and E¯N¯¯S. E¯N¯M¯ controls the four LED

channels MAIN1 to MAIN4. E¯N¯¯S controls the two LED

lines SUB1 and SUB2. E¯N¯M¯ and E¯N¯¯S work the same

way. The chip must first be enabled by setting the

enable input EN high. On the first E¯N¯M¯ or E¯N¯¯S

transition from high to low, the LED current in the

associated LEDs is set to the full scale 31mA. On

each consecutive falling edge of E¯N¯M¯ or E¯N¯¯S, the

LED current is decreased by 1mA. On the 32^ndpulse,

the LED channel is turned off and the current drops to

0mA. One additional E¯N¯M¯ or E¯N¯¯S pulse resets the full

current to 31mA, as shown on Figure 1.

The driver enters a thermal shutdown mode as soon as

the die temperature exceeds about +165ºC. When the

device temperature drops down by about 20ºC, the device

resumes normal operation.

External Components

The driver requires a total of four external 1µF

ceramic capacitors: two for decoupling input and

output, and two for the charge pump. Both capacitor

types X5R and X7R are recommended for the LED

driver application. In the 1.5x charge pump mode, the

input current ripple is kept very low by design, and an

input bypass capacitor of 1µF is sufficient. In 1x mode,

the device operating in linear mode does not introduce

switching noise back onto the supply.

Consecutive pulses should be separated by 300ns or

more. Pulsing frequencies from 5kHz up to 1MHz are

supported during dimming operations. When the EN is

held low for 1.5ms or more, the CAT3616 enters the

shutdown mode and draws “zero” current. When the

enable EN input is low, toggling E¯N¯M¯ or E¯N¯¯S has no

effect.

Recommended Layout

In 1.5x charge pump mode, the driver switches

internally at a high frequency of 1MHz. It is

recommended to minimize trace length to all four

capacitors. A ground plane should cover the area

under the driver IC as well as the bypass capacitors.

Short connection to ground on capacitors Cin and

Cout can be implemented with the use of multiple via.

A copper area matching the TDFN exposed pad

(GND) must be connected to the ground plane

underneath. The use of multiple via improves the

package heat dissipation.

Unused LED channels can be disabled independently

by connecting the corresponding main or sub LED pin

to VOUT.

Protection Mode

If an LED becomes open-circuit, the output voltage

VOUT is internally limited to about 5.5V. This is to

prevent the output pin from exceeding its absolute

maximum rating.

Doc. No. 5018 Rev. A

Characteristics subject to change without notice

1...7 8 91011 12 13 14

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