Datasheet > LNK454_11

LNK454_11

更新时间： 2022-04-03 17:25:17

品牌	Logo	应用领域
帕沃英蒂格盛 - POWERINT		驱动器三端双向交流开关功率因数校正
页数	文件大小	规格书
20页	2510K
描述
LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LNK454_11 数据手册

LNK454/456-458/460

DRAIN (D)

REGULATOR

5.85 V

BYPASS (BP)

4.9 V

I_LIM

V_I_LIM

CURRENT LIMIT

SOA

STATE MACHINE

SOA

SET

V_FB(SK)

CLR

V_FB(LO)

Zero Crossing

PHASE

MEASUREMENT

V_REFDAC

FILTER

I_FB

V_Z_LIM

1 µA

DIGITAL

INTEGRATOR

AUTO-RESTART

FEEDBACK (FB)

Update

CLK

INC/DEC

SET

CLR

FREQUENCY/

DUTY CYCLE

CONTROLLER

ON-TIME

EXTENSION

SOURCE (S)

PI-5893-091010

Figure 2. Functional Block Diagram.

Pin Functional Description

DRAIN (D) Pin:

D Package (SO-8C)

High-voltage power MOSFET drain connection. The internal

start-up bias current is drawn from this pin through a switched

high-voltage current source. Drain current sensing and

associated controller functions are also performed using this pin.

Exposed Pad (On Bottom)

Internally Connected to

SOURCE Pin

K Package

(eSOP-12)

SOURCE (S) Pin:

NC 1

12 S

11 S

10 S

9 S

Power MOSFET source connection. Ground reference for

BYPASS and FEEDBACK pins.

FB 2

BP 3

NC 4

BYPASS (BP) Pin:

Connection point for the external bypass capacitor for the

internally generated 5.85 V supply.

8 S

D 6

7 S

Exposed Pad Internally

Connected to SOURCE Pin

FEEDBACK (FB) Pin:

V Package (eDIP-12)

LED current sensing pin. During normal operation the 290 mV

threshold determines the average value of the current ﬂowing

through the load sense resistor.

S 12

1 NC

S 11

S 10

S 9

2 FB

3 BP

4 NC

A second threshold clamps excessive output current ripple.

A third higher threshold is used to protect against output

short-circuit and overvoltage conditions (see Figure 5).

S 8

6 D

S 7

PI-5836a-061311

Figure 3. Pin Conﬁguration (Top View).

Rev. C 10/11

www.powerint.com

123 4 5 6 7...20

下载PDF

与LNK454_11相关器件

型号	品牌	描述	获取价格	数据表
LNK454D	POWERINT	LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Is	获取价格
LNK454DG	POWERINT	LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Is	获取价格
LNK454DG-TL	POWERINT	LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Is	获取价格
LNK454VG	POWERINT	LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Is	获取价格
LNK456	POWERINT	LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Iso	获取价格
LNK456D	POWERINT	LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Is	获取价格