Datasheet > ML4833CP

ML4833CP

更新时间： 2024-02-03 03:46:39

品牌	Logo	应用领域
MICRO-LINEAR		光电二极管信息通信管理电子控制器
页数	文件大小	规格书
13页	272K
描述
Electronic Dimming Ballast Controller

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中文翻译

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数据手册

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ML4833CP 数据手册

July 2000

PRELIMINARY

ML4833*

Electronic Dimming Ballast Controller

FEATURES

GENERAL DESCRIPTION

■ Complete power factor correction and dimming

The ML4833 is a complete solution for a dimmable or a

non-dimmable, high power factor, high efficiency

electronic ballast. The BiCMOS ML4833 contains

controllers for “boost” type power factor correction as

well as for a dimming ballast. The ML4833 was designed

to minimize the number of external components required

to build an electronic ballast.

ballast control in one IC

■ Low distortion, high efficiency continuous boost,

peak current sensing PFC section

■ Programmable start scenario for rapid or

instant start lamps

■ Lamp current feedback for dimming control

■ Variable frequency dimming and starting

The PFC circuit uses a new, simple PFC topology which

requires only one loop for compensation. This system

produces a power factor of better than 0.99 with low

input current THD. An overvoltage protection comparator

inhibits the PFC section in the event of a lamp out or lamp

failure condition.

■ Programmable restart for lamp out condition to

reduce ballast heating

■ Internal over-temperature shutdown replaces

external heat sensor

The ballast controller section provides for programmable

starting sequence with individually adjustable preheat and

lamp out-of-socket interrupt times. The IC controls lamp

output power through feedback. The ML4833 provides a

power down input which reduces power to the lamp, for

GFI, end of life, etc.

■ PFC overvoltage comparator eliminates output

“runaway” due to load removal

■ Low start-up current <0.5mA

■ Power reduction pin for end of life and GFI detectors

(* Indicates part is End Of Life as of July 1, 2000)

BLOCK DIAGRAM

INTERRUPT

LAMP FB

SET

VARIABLE FREQUENCY

LFB OUT

OSCILLATOR

OUTPUT

DRIVERS

OUT A

PRE-HEAT

AND INTERRUPT

TIMERS

R /C

CONTROL

GATING LOGIC

OUT B

PDWN

PFC OUT

RAMP

PIFB

PGND

POWER

FACTOR

PEAO

VCC

CONTROLLER

PVFB/OVP

UNDER-VOLTAGE

AND THERMAL

SHUTDOWN

REF

GND

12 3 4 5 6 7...13

中文翻译

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与ML4833CP相关器件

型号	品牌	获取价格	描述	数据表
ML4833CS	MICRO-LINEAR	获取价格	Electronic Dimming Ballast Controller
ML4835	MICRO-LINEAR	获取价格	Compact Fluorescent Electronic Dimming Ballast Controller
ML4835CP	MICRO-LINEAR	获取价格	Compact Fluorescent Electronic Dimming Ballast Controller
ML4835CS	MICRO-LINEAR	获取价格	Compact Fluorescent Electronic Dimming Ballast Controller
ML4836	MICRO-LINEAR	获取价格	Compact Fluorescent Electronic Dimming Ballast Controller
ML4836CP	MICRO-LINEAR	获取价格	Compact Fluorescent Electronic Dimming Ballast Controller
ML4836CS	MICRO-LINEAR	获取价格	Compact Fluorescent Electronic Dimming Ballast Controller
ML483-G	TRIQUINT	获取价格	0.7-10GHz HIgh IP3 Mixer with Integrated LO AMP
ML483-PCB	TRIQUINT	获取价格	0.7-10GHz HIgh IP3 Mixer with Integrated LO AMP
ML483PYA	COILCRAFT	获取价格	High Reliability Power Inductors

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