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PDF KA7500 Data sheet ( Hoja de datos )
| Número de pieza | KA7500 | |
| Descripción | single monolithic chip | |
| Fabricantes | Estek Electronics | |
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Hay una vista previa y un enlace de descarga de KA7500 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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K A7500
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
Block Digram
DIP - 16
Package
BEIJING ESTEK ELECTRONICS CO.,LTD
1
1 page  
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K A7500
Figure 1. Operational test circuit and waveforms
Figure 2.Amplifier characteristics
BEIJING ESTEK ELECTRONICS CO.,LTD
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet KA7500.PDF ] | |
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