AMS34063 Просмотр технического описания (PDF) - Advanced Monolithic Systems Inc

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производитель

AMS34063

DC-TO-DC CONVERTER CONTROL CIRCUIT

Advanced Monolithic Systems Inc 

AMS34063

TYPICAL APPLICATIONS (Continued)

8

180

7

RSC

0.22

VIN

6

12V 100 +

µF

5

R1 2.2 k

Step-Up Converter

170µH

L

SQ

R

1

Q2

Q1

IPK

OSC

CT

+ COMP.

-

1.25V

REF

REG

2

3

CT

1500

pF

4

1N5819

R2

VOUT

47 k

150 + 28V/175mA

µF CO

Test

Line Regulation

Load Regulation

Output Ripple

Short Circuit Current

Efficiency

Conditions

VIN = 8 to 16V, IO = 175 mA

VIN = 12V, IO = 75 to 175 mA

VIN = 12V, IO = 175 mA

VIN = 12V, RL = 0.1Ω

VIN = 12V, IO = 175 mA

Results

12 mV

5.0 mV

40 mVP-P

2.3A

84.7%

External Current Boost Connections for IC Peak Greater than 1.5A

a. External NPN Switch

b. External NPN Saturated Switch

8

18

0

7

RSC

6

VIN

1

VOUT

8

180

2

7

RSC

6

VIN

1

VOUT

2

R 0 for

constant VIN

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

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