KA7540 Selling Leads, Price trend , Fairchild Semiconductor, KA7540 DataSheet download, circuit diagram from SeekIC.com

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SeekIC No. : 00587644 Detail

KA7540: Switching Converters, Regulators & Controllers Ballast Controller Dimming

KA7540 Data Sheet

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Part Number:: KA7540
Mfg:: Fairchild Semiconductor
Supply Ability:: 5000

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1~5000

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Negotiable

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Upload time: 2024/4/19

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What is this?

KA7500 evaluate
Features: ·Complete PWM Power Control Circuitry·Uncommitted Outputs for 200 mAsink or Source Curre...
KA7500B evaluate
DC/DC Switching Controllers SMPS Controller
KA7500C evaluate
US $.26 - .44 / Piece

Switching Converters, Regulators & Controllers SMPS Controller

Product Details

Quick Details

Operating Temperature Range :	- 40 C to + 85 C	Mounting Style :	Through Hole
Package / Case :	DIP-8	Packaging :	Tube

Description

Output Voltage :
Output Current :
Output Power :
Input Voltage :
Switching Frequency :
Packaging : Tube
Operating Temperature Range : - 40 C to + 85 C
Mounting Style : Through Hole
Package / Case : DIP-8

Features:

• Internal soft start
• No lamp protection
• Voltage controlled dimming
• Trimmed 1.5% internal bandgap reference
• Under voltage lock out with 1.8V of hysteresis
• Totem pole output with high state clamp
• Low start-up and operating current
• 8-pin DIP & 8-pin SOP

Application

• Electronic Ballast
• Lighting Control System
• Half-bridge Drive Control System

Pinout

Connection Diagram

Specifications

Parameter	Symbol	Value	Unit
Input Voltage (for VO = 5V to 12V) (for VO = 15V) Power Dissipation Thermal Resistance, Junction to Air Tc = +25 °C Thermal Resistance ,Junction to Case Operating Junction Temperature Range Storage Temperature Range	VI PD RJA RJC TJ TSTG	35 40 Internally limited 65 2.5 0 ~ +150 -65 ~ +150	V V - °C/W °C/W °C °C

Description

The KA7540 provides simple and high performance electronic ballast control functions. KA7540 is optimized for electronic ballast requiring a minimum board area, reduced component count and low power dissipation. Internal soft start circuitry eliminates the need for an external soft start PTC resistor. Voltage controlled dimming circuit is built into the IC to control the lighting output in a wide range.

Protection circuitry has also been added to prevent switches from burning out in no lamp condition. Output gate drive circuit clamps power MOSFET gate voltage irrespective of supply voltage.

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KA7540

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