MAX1729 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX1729

ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation

Maxim Integrated 

ECB and LCD Display Bias Supply with Accurate

Output Voltage and Temperature Compensation

Table 1. Recommended Inductors

SUPPLIER

Murata

Panasonic

PART

LQH3C221K04M00

ELT3KN115B

INDUCTANCE

(µH)

220

470

DC RESISTANCE

(Ω)

8.4

19

SATURATION

CURRENT (mA)

70

40

MAX HEIGHT

(mm)

2.2

1.6

Table 2. Recommended Capacitor Values

CAPACITOR

C1

C2

C3

C4

C5

C6*

CAPACITANCE

(µF)

0.1

0.068

0.1

1

1000pF

1

*Use a low-leakage capacitor.

Applications Information

PC Board Layout Considerations

Proper PC board layout minimizes output ripple and

increases efficiency. For best results, use a ground

plane, minimize the space between C1, C2, and GND

of the MAX1729, and place the inductor as close to LX

and IN as possible. For an example of proper PC board

layout, refer to the MAX1729 Evaluation Kit.

Chip Information

TRANSISTOR COUNT: 1154

10 ______________________________________________________________________________________

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