Datasheet > PT6978A-D

PT6978A-D

更新时间： 2024-11-13 01:03:23

品牌	Logo	应用领域
普诚科技 - PTC		功率因数校正
页数	文件大小	规格书
4页	425K
描述
Single Stage APFC Buck LED Driver

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PT6978A-D 数据手册

Preliminary PT6978A/C/L/H

Single Stage APFC Buck LED Driver

DESCRIPTION

FEATURES

The PT6978X is a single-stage buck controller that

achieves high power factor and accurate current for

LED lighting applications. Integrated 500V (or 650V)

MOSFET to decrease physical volume.

 Integrated 500V (650V) MOSFET.

 High PF≥0.9 with single stage conversion.



Real-current control technique achieves accurate

constant LED current.

 Quasi-Resonant switching mode to achieve low

The PT6978X integrates APFC function and the high

PF value is achieved by constant on-time operation

mode. The PT6978X works in Quasi-Resonant

switching mode, it can reduce the switching losses and

improve the EMI performance.

switching losses.



±3% output current accuracy.

 Excellent line regulation and load regulation.

 Low start-up current: 15μA typical.

 Reliable short LED and open LED protection.

 System auto-restart function.

 VCC over voltage protection.

 VCC under voltage protection (UVLO).

 Cycle by cycle current limiting.

 Over temperature protection (OTP).

 SOP8 package.

The multi-protection features of PT6978X greatly

enhance the system reliability and safety. The

PT6978X provides input over voltage protection, short

LED protection, open LED protection, over

temperature protection, cycle-by-cycle current limiting,

etc.

 DIP8 package.

APPLICATIONS



LED Bulb Lamp

LED Tube

Others Led Lighting

BLOCK DIAGRAM

Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan

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与PT6978A-D相关器件

型号	品牌	获取价格	描述	数据表
PT6978A-S	PTC	获取价格	Single Stage APFC Buck LED Driver
PT6978C-S	PTC	获取价格	Single Stage APFC Buck LED Driver
PT6978H	PTC	获取价格	Single-Stage APFC Buck LED Driver
PT6978H-D	PTC	获取价格	Single Stage APFC Buck LED Driver
PT6978L	PTC	获取价格	Single-Stage APFC Buck LED Driver
PT6978L-S	PTC	获取价格	Single Stage APFC Buck LED Driver
PT6980	TI	获取价格	10-A 12V-Input Dual Output Integrated Switching Regulator
PT6981	ETC	获取价格	2.5V/1.8V. 10.5A 12V-Input Dual Output ISR
PT6981A	TI	获取价格	10-A 12V-Input Dual Output Integrated Switching Regulator
PT6981C	TI	获取价格	10-A 12V-Input Dual Output Integrated Switching Regulator