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KA7540

Switching Converters, Regulators & Controllers Ballast Controller Dimming

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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

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/21

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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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