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KA7500

Estek Electronics
Part Number KA7500
Manufacturer Estek Electronics
Description single monolithic chip
Published Mar 10, 2008
Detailed Description www.DataSheet4U.com KA7500 Description The KA7500 incorporate on a single monolithic chip all the functions required in...
Datasheet PDF File KA7500 PDF File

KA7500
KA7500

Overview
www.
DataSheet4U.
com KA7500 Description 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 when externally altered.
The on-chip oscillator may be bypassed by terminating RT (pin 6 ) to the reference output and providing a sawtooth input to Ct (pin 5) ,or it may be used to drive the common circuits in synchronous multiple-rail power supplies .
The uncommitted output transistors provide either common circuits in synchronous Power supplier.
The uncommitted output transistors provide either common-emitter or emitter-follower output capability .
Each device provides for push-pull or single-ended output operation, which may be selected throug h the outpu t - control function .
Th e architecture of these devices prohibits the possibility of either output being pulsed twice during push-pull operation.
Features • Complete PWM Power Control Circuitry Uncommitted Outputs for 200 mA sink or Source Current Output control Selects Singel-Ended or Push-Pull operation • Internal Circuitry Prohibits Double Pulse at Either output • Variable Dead-Time Provides Control over Total Range Internal Regulator Provides a Stable 5-V Reference supply ,1% Circuit Architecture Allows Easy Synchronization DIP - 16 Block Digram Package BEIJING ESTEK ELECTRONICS CO.
,LTD 1 www.
DataSheet4U.
com KA7500 Absolute Maximum Ratings Over Operating Free-air Temeratu...


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