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KA7500B


Part Number KA7500B
Manufacturer Fairchild
Title SMPS Controller
Description The KA7500B is used for the control circuit of the PWM switching regulator. The KA7500B consists of 5V reference voltage circuit, two error amplif...
Features
• Internal Regulator Provides a Stable 5V Reference Supply Trimmed to 5%
• Uncommitted Output TR for 200mA Sink or Source Current
• Output Control For Push-Pull or Single Ended Operation
• Variable Duty Cycle By Dead Time Control (Pin 4) Complete PWM Control Circuit
• On-Chip Oscillator With Master ...

File Size 59.52KB
Datasheet KA7500B PDF File






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KA7500 : SHENZHEN HUAFUQIN ELECTRONICS CO.,LTD KA7500 KA7500 KA7500 http://www.hfq123.com 1 REV: A0 2009-12-1 SHENZHEN HUAFUQIN ELECTRONICS CO.,LTD KA7500 http://www.hfq123.com 2 REV: A0 2009-12-1 SHENZHEN HUAFUQIN ELECTRONICS CO.,LTD KA7500 http://www.hfq123.hqew.com 3 REV: A0 2009-12-1 SHENZHEN HUAFUQIN ELECTRONICS CO.,LTD KA7500 http://www.hfq123.com 4 REV: A0 2009-12-1 SHENZHEN HUAFUQIN ELECTRONICS CO.,LTD Typical Application Pulse Width Modulated Step-down Converter VI=10V to 40V KSA1010 47Ω 150Ω 0.1uF 1MΩ 12 Vcc 11 C2 83 C1 COMP INPUT -2 VREF 14 KA7500 - 15 +1 D.T GND E1 E2 O.C 4 7 9 10 13 + 50uF 50V RT CT +16 65 + 47kΩ 0.001uF KA7500 1mH,2A Vo=5V Io=1A .

KA7500 : .

KA7500 : The KA7500 incorporate on a single monolithic chip all the functions required in the construction of a pulse-width-modulation control circuit. Designed primarily for power supply control ,these devices offer the systems engineer the flexibility to tailor the power supply control circuitry to hos application. The K A7500 contains an error amplifier , anon-chip adjustable oscillator ,a dead- time control comparator ,pulse-steering control flip-flop ,a 5-volt, 1% precision regulator , and output-control circuits. The error amplifier exhibits a common-mode voltage range from -0.3 volts to Vcc -2 volts .The dead time control comparator has a fixed offset that provides approximately 5% deed time .

KA7500B : KA7500B Industrial CD-ROM(Edition 3.0) This Data Sheet is subject to change without notice. Page : 1 ( KA7500B ) (C) 1996 Samsung Electronics Printed in Korea. KA7500B Industrial CD-ROM(Edition 3.0) This Data Sheet is subject to change without notice. Page : 2 ( KA7500B ) (C) 1996 Samsung Electronics Printed in Korea. KA7500B Industrial CD-ROM(Edition 3.0) This Data Sheet is subject to change without notice. Page : 3 ( KA7500B ) (C) 1996 Samsung Electronics Printed in Korea. KA7500B Industrial CD-ROM(Edition 3.0) This Data Sheet is subject to change without notice. Page : 4 ( KA7500B ) (C) 1996 Samsung Electronics Printed in Korea. KA7500B Industrial CD-ROM(Edition 3.0) Thi.

KA7500C : The KA7500C is used for the control circuit of the pulsewidth modulation switching regulator. The KA7500C consists of 5V reference voltage circuit, two error amplifiers, flip flop, an output control circuit, a PWM comparator, a dead-time comparator, and an oscillator. This device can be operated in the switching frequency of 1kHz to 300kHz. The precision of voltage reference (VREF) is improved up to ±1% with trimming. This provides a better output voltage regulation. The operating temperature range is -25°C ~ +85°C. 16-Lead DIP 16-Lead SOP Ordering Information Part Number Operating Temperature Range KA7500C KA7500CD KA7500CDTF -25 to +85°C Eco Status RoHS Package Packing Method 16-.




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