Rainbow-electronics MAX8614B Manual de usuario descargar pdf (Pagina 13)

MAX8614A/MAX8614B

Dual-Output (+ and -) DC-DC

Converters for CCD

______________________________________________________________________________________ 13

It is important to connect the GND pin, the input

bypass-capacitor ground lead, and the output filter

capacitor ground lead to a single point (star ground

configuration) to minimize ground noise and improve

regulation. Also, minimize lead lengths to reduce stray

capacitance, trace resistance, and radiated noise, with

preference given to the feedback circuit, the ground

circuit, and LX_. Place feedback resistors R1–R4 as

close to their respective feedback pins as possible.

Place the input bypass capacitor as close as possible

to AV

and GND.

Chip Information

PROCESS: BiCMOS

LXN

PVP

0.1µF

0.22µF

4.7µF

1µF

2.2µF

BATT

(2.7V ~ 5V)

FAULT

BATT

REF

FBN

187kΩ

30.9kΩ

100kΩ

1.4MΩ

100kΩ

INV

BST

511

ONBST

ONINV

REF

INV

-7.5V AT 100mA

CMHSH5-21

MAX8614A

MAX8614B

LXP

SEQ

GND PGND

BST

+15V AT 50mA

4.7µH

2.2µH

FBP

FLT

Figure 1. Typical Application Circuit

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Rainbow-electronics MAX8614B Manual de usuario Pagina 13

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