LT3580EMS8E-TRPBF(RevC) Ver la hoja de datos (PDF) - Linear Technology

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Fabricante

LT3580EMS8E-TRPBF
(Rev.:RevC)

Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization

Linear Technology 

APPLICATIONS INFORMATION

VCESAT

–(VIN + ⏐VOUT⏐)

L1

C2

SW

SWX

L2

VIN

+

Q1

D1

C1

C3

LT3580

–VOUT

RLOAD

3580 F12

Figure 12. Switch-On Phase of an Inverting Converter. L1 and L2 Have Positive dI/dt.

VIN + ⏐VOUT⏐+ VD

VD

L1

C2

SW

SWX

L2

VIN

–VOUT

+

C1

Q1

D1

C3

RLOAD

3580 F13

Figure 13. Switch-Off Phase of an Inverting Converter. L1 and L2 Currents Have Negative dI/dt.

L1

VIN

4.2μH

D1

VOUT

12V

5V

C2 550mA

VIN

SW

10μF

SHDN

GND

LT3580

130k

RT

FB

C1

2.2μF

SYNC

75k

VC

SS

0.1μF

10k

1nF

C1: 2.2μF, 25V, X5R, 1206

C2: 10μF, 25V, X5R, 1206

D1: MICROSEMI UPS120

L1: SUMIDA CDR6D23MN-4R2

3580 F14

Figure 14. 1.2MHz, 5V to 12V Boost Converter

3580fc

19

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