AIC1563CS Просмотр технического описания (PDF) - Unspecified

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Компоненты Описание

производитель

AIC1563CS

Versatile DC/DC Converter

Unspecified 

AIC1563

BLOCK DIAGRAM

DC 1

Q2

QS

Q1

R

80

DE 2

CF 3

GND 4

CT

Is

Oscillator

1.25V

Reference

Voltage

Comparator

+

-

8 BOOST

7 IS

6

VCC

5

FB

AIC1563

PIN DESCRIPTIONS

PIN 1: DC - 2A switch collector.

PIN 2: DE - Darlington switch emitter.

PIN 3: CF - Oscillator timing capacitor.

PIN 4: GND - Power ground.

PIN 5: FB - Feedback comparator inverting input.

PIN 6: VCC - Power supply input.

PIN 7: IS

- Highside current sense input.

VCC - VIS=300mV.

PIN 8: BOOST-Bootstrapped driver collector.

APPLICATION INFORMATIONS

DESIGN FORMULA TABLE

CALCULATION

t ON

t OFF

(tON + tOFF) MAX

CT

STEP-DOWN

VOUT + VF

V - V - V IN(MIN)

SAT

OUT

1

FMIN

4x10-5tON

IC (SWITCH)

2IOUT(MAX)

RS

L(MIN)

Co

0.3/IC(SWITCH)

V - V - V IN(MIN)

SAT

( I )t C(SWITCH)

OUT

ON(MAX)

I ( t + t C( SWITCH)

ON

OFF )

8 VRIPPLE (P - P )

STEP-UP

V + V V OUT

- F

IN(MIN)

V - V IN(MIN)

SAT

1

FMIN

4 x 10-5tON

2IOUT(MAX)

(

t ON + t OFF )

t OFF

0.3/ IC (SWITCH)

V - V IN(MIN)

SAT

( I )t C(SWITCH)

ON(MAX)

I t OUT ON

VRIPPLE(P - P)

5

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