KA7500 ETC-unknow, KA7500 Datasheet

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KA7500

Manufacturer Part Number
KA7500
Description
Manufacturer
ETC-unknow
Datasheet

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The KA7500 incorporate on a single monolithic chip all the functions required in the construction of a pulse-width-modulation control
Block Digram
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
synchronous multiple-rail power supplies . The uncommitted output transistors provide either common circuits in synchronous
provides for push-pull or single-ended output
e architecture of these devices prohibits the possibility of either output being pulsed twice during push-pull operation.
Features
Description
Power supplier.The uncommitted output transistors provide either common-emitter or emitter-follower output capability .Each device
to the reference output and providing a sawtooth input to Ct (pin 5) ,or it may be used to drive the common circuits in
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
operation, which
altered. The on-chip oscillator may be bypassed by terminating RT (pin 6 )
1
may be
selected
throug h the outpu t - control
BEIJING ESTEK ELECTRONICS CO.,LTD
Package
DIP - 16
KA 7500
function . Th

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KA7500 Summary of contents

Page 1

... 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 ...

Page 2

Absolute Maximum Ratings Over Operating Free-air Temerature Range (Unless Otherwise Noted) Rating Supply voltage ,Vcc Amplifier input voltage Collector output voltage Collector output current Operating free-air temperature range Storage temperature range Lead temperature 1,6 mm from case for 10 seconds ...

Page 3

Oscillator section (See Figure 1) Parameter Frequency Frequency Frequency change with temperature ***** Amplifier section (See Figure 2) Parameter Input offset voltage Input offset current Input blas current Common-mode input voltage range Open-loop voltage amplification Unity-gain bandwidth Output Section Parameter ...

Page 4

Total Device Parameter Standby supply current Pin 6 at Vref Switching Characteristics Parameter Output voltage rise time Common-emitter configuration, See figure 3 Output voltage fall time Output voltage rise time Emitter-follower configuration. See Figure 4 Output voltage fall ...

Page 5

Figure 1. Operational test circuit and waveforms Figure 2.Amplifier characteristics 5 KA 7500 BEIJING ESTEK ELECTRONICS CO.,LTD ...

Page 6

... Rm 6A07,Changyin Office Building ,No.88,Yong Ding Road,Hai Dian District ,Beijing Postalcode:100039 Tel: 86-010-58895780 / Http://www.estek.com.cn Email:sales@estek.com.cn Figure 3. Common - emitter configuration Figure 4. Emitter - follower configuration P ACK AGE DIP-16 6A06--6A07 Fax : 010-58895793 6 KA 7500 ING KA7500 REV No:01-060816 BEIJING ESTEK ELECTRONICS CO.,LTD ...

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