Rainbow-electronics MAX889 Manual de usuario descargar pdf (Pagina 8)

MAX889

High-Frequency, Regulated,

200mA, Inverting Charge Pump

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

SOICN.EPS

Table 1. Capacitor Selection Table

PART FREQUENCY C

FLY

OUT

REGULATED

FREE-RUN

MAX889R 0.5MHz 4.7µF22µF22µF 4.7µF

MAX889S 1MHz 2.2µF10µF10µF 2.2µF

MAX889T 2MHz 1µF 4.7µF 4.7µF1µF

PRODUCTION

METHOD

MANUFACTURER SERIES PHONE FAX

AVX TPS series 803-946-0690 803-626-3123

Kemet 494 series 864-963-6300 864-963-6521

Matsuo 267 series 714-969-2491 714-960-6492

Surface-Mount

Tantalum

Sprague 593D, 595D series 603-224-1961 603-224-1430

S ur face- M ount P ol ym er Sanyo POSCAP-APA 619-661-6835 619-661-1055

AVX X7R 803-946-0690 803-626-3123

Kemet X7R 864-963-6300 864-963-6521

Matsuo X7R 714-969-2491 714-960-6492

S ur face- M ount C er am i c

Murata GRM X7R 814-237-1431 814-238-0490

Table 2. Low-ESR Capacitor Manufacturers

Chip Information

TRANSISTOR COUNT: 1840

PROCESS: BiCMOS

Package Information

Figure 4. Separate VREF for Voltage Divider

MAX889T

INPUT

5.0V

OUTPUT

-3.3V

4.7µF

OUT

4.7µF

REF

FLY

1µF

100k

66.5k

OUT

GNDAGND

CAP+

OFF

SHDN

CAP-

OUT

= -V

REF

1 2 3 4 5 6 7 8

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