AMS36063 查看數據表（PDF） - Advanced Monolithic Systems Inc

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AMS36063

DC-TO-DC CONVERTER CONTROL CIRCUIT

Advanced Monolithic Systems Inc 

FUNCTIONAL BLOCK DIAGRAM

ENABLE 8

IPK SENSE

7

6

VCC

COMPARATOR 5

INVERTING

INPUT

AMS36063

SQ

R

180

IPK

OSC

CT

+ COMP.

-

Q2

Q1

170

1 SWITCH

COLLECTOR

2 SWITCH

EMITTER

1.25V

REF

REG

3 TIMING

CAPACITOR

4

GND

TYPICAL PERFORMANCE CHARACTERISTICS

1000

Output Switch On-Off Time vs

Oscillator Timing Capacitor

VCC = 5.0V

IPK(sense) = V CC

Pin 5 = GND

100

10

1.0

0.1

1.0

10

100

OSCILLATOR TIMING CAPACITOR

Emitter-Follower Configuration

Output Switch Saturation Voltage

vs Emitter Current

1.6

VCC = 5.0V

1.5

Pins 1,7 = VCC

Pin 3,5 = GND

1.4

1.3

1.2

1.1

1.0

0 0.2 0.4 0.6 0.8 1.0 1.2 1.4

EMITTER CURRENT (A)

Standby Supply Current vs

Supply Voltage

3.2

CT= 0.001 µF

IPK(sense) = V CC

Pin 2 = GND

2.4

1.6

0.8

0

0 5.0 10 20 30 40 50 60

SUPPLY VOLTAGE (V)

Common-Emitter Configuration

Output Switch Saturation Voltage

vs Collector Current

1.2

VCC = 5.0V

1.0

Pin 7 = VCC

Pin 2,3,5 = GND

Darlington Connection

0.8

0.6

Forced Beta ≈20

0.4

0.2

0

0 0.2 0.4 0.6 0.8 1.0 1.2 1.4

COLLECTOR CURRENT (A)

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140

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