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NCP1370

更新时间： 2024-09-20 01:21:15
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
19页 260K
描述
Dimmable Quasi-Resonant Primary Side Current-Mode Controller

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NCP1370 数据手册

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NCP1370  
Product Preview  
Dimmable Quasi-Resonant  
Primary Side Current-Mode  
Controller for LED TV  
Backlight  
www.onsemi.com  
The NCP1370 is a PWM current mode controller targeting isolated  
flyback and non−isolated constant current topologies. The controller  
operates in a quasi−resonant mode to provide high efficiency. Thanks  
to a novel control method, the device is able to precisely regulate a  
constant LED current from the primary side. This removes the need  
for secondary side feedback circuitry, biasing and an opto−coupler.  
The device is highly integrated with a minimum number of external  
components. A robust suite of safety protection is built in to simplify  
the design. This device supports analog/digital dimming and both  
modes can be combined to enhance dimming precision. The NCP1370  
has a programmable peak current limit to optimize design  
compatibility over a wide range of applications. The controller  
features a standby mode with reduced current consumption.  
QUASI−RESONANT PWM  
CONTROLLER FOR  
LED DRIVERS  
MARKING  
DIAGRAM  
8
SOIC−8  
D SUFFIX  
CASE 751  
NCP1370x  
ALYW  
8
1
G
1
Features  
NCP1370 = Specific Device Code  
• Quasi−resonant Peak Current−mode Control Operation  
• Primary Side Sensing (no opto−coupler needed)  
x
A
L
= Device Option (A or B)  
= Assembly Location  
= Wafer Lot  
• Wide V Range  
CC  
Y
W
G
= Year  
= Work Week  
= Pb−Free Package  
• Source 300 mA / Sink 500 mA Totem Pole Driver with 12 V Gate  
Clamp  
• Precise LED Constant Current Regulation 1% Typical  
• Line Feed−forward for Enhanced Regulation Accuracy  
• Low LED Current Ripple  
PIN CONNECTIONS  
1
ILIM  
DIM  
VIN  
• 500 mV 1.2% Guaranteed Voltage Reference for Current  
ZCD  
CS  
Regulation  
VCC  
DRV  
• Programmable Cycle−by−Cycle Peak Current Limit  
GND  
• Low V  
Allowing to use a Standby Power Supply to Power the  
CC(on)  
(Top View)  
Device  
• Analog or Digital Dimming  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 18 of this data sheet.  
• Wide Temperature Range of −40 to + 125°C  
• Robust Protection Features  
♦ LED Open Circuit Protection  
♦ V Over Voltage Protection  
CC  
♦ Secondary Diode Short Protection  
♦ Output Short Circuit Protection  
♦ Shorted Current Sense Pin Fault Detection  
♦ Brown−out  
Typical Applications  
♦ V Under Voltage Lockout  
♦ Thermal Shutdown  
• Pb−free, Halide−free MSL1 Product  
• TV Backlight  
• Lighting with Auxiliary Power Supply  
CC  
This document contains information on a product under development. ON Semiconductor  
reserves the right to change or discontinue this product without notice.  
© Semiconductor Components Industries, LLC, 2016  
1
Publication Order Number:  
February, 2016 − Rev. P1  
NCP1370/D  
1234567...19

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