Rainbow-electronics MAX1664 Manual do Utilizador descarregar pdf (Página 1)

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 408-737-7600 ext. 3468.

________________General Description

The MAX1664 integrates power-supply and backplane

drive circuitry for active-matrix thin-film-transistor (TFT) liq-

uid crystal displays. Included are a single-output, pulse-

width-modulation boost converter (0.25Ω switch), a

dual-output (positive and negative) gate-driver supply

using one inductor, an LCD backplane driver, and a sim-

ple phase-locked loop to synchronize all three outputs.

High switching frequency (1MHz nominal) and phase-

locked operation allow the use of small, minimum-

height external components while maintaining low

output noise. A +2.8V to +5.5V input voltage range

allows operation with any logic supply. Output voltages

are adjustable to +5.5V (DC-DC 1) and to +28V and

-10V (DC-DC 2). The negative output voltage can be

adjusted to -20V with additional components. Also

included are a logic-level shutdown and a “Ready” out-

put (RDY) that signals when all three outputs are in reg-

ulation.

The boost-converter operating frequency can be set at

16, 24, or 32 times the backplane clock. This flexibility

allows a high DC-DC converter frequency to be used

with LCD backplane clock rates ranging from 20kHz to

72kHz. The MAX1664 is supplied in a 1.1mm-high

TSSOP package.

________________________Applications

LCD Modules

LCD Panels

____________________________Features

♦ Integrates All Active Circuitry for Three DC-DC

Converters

♦ Ultra-Small External Components

(ceramic capacitors, 2µH to 5µH inductors)

♦ DC-DC Converters Phase-Locked to Backplane

Frequency for Lowest Noise

♦ Low Operating Voltage (down to +2.8V)

♦ Adjustable Output Voltage from V

to +5.5V

♦ Load Currents Up to 500mA

♦ Adjustable TFT Gate Driver Output:

Positive, V

to +28V

Negative, 0 to -10V (-20V with added

components)

♦ Includes 0.35Ω Backplane Driver

♦ 1µA Shutdown Current

♦ Power-Ready Output Signal

MAX1664

________________________________________________________________

Maxim Integrated Products

REF

FB2-

IN INP

LX2P

LX2N

FB2+

PGND2

PLLC

GND

FPLL

RDY

REF

SHDN

OFF

5.5V

-10V

28V

BPV

BACKPLANE

DRIVER

SUPPLY

2.8V TO 5.5V

BPDRV

BPV

PGND1

FB1

LX1

BPCLK

MAX1664

Typical Operating Circuit

___________________Pin Configuration

19-1356; Rev 0; 4/98

PART

MAX1664CUP 0°C to +70°C

TEMP. RANGE PIN-PACKAGE

20 TSSOP

_______________Ordering Information

FPLL

LX1

PGND1

PGND2REF

FB1

RDY

SHDN

TOP VIEW

LX2N

LX2P

INP

BPCLKFB2+

FB2-

GND

BPV

BPDRVBPV

PLLC

MAX1664

TSSOP

Active-Matrix Liquid Crystal Display

(AMLCD) Supply

1 2 3 4 5 6 ... 15 16

(AMLCD) Supply 1

Resumo do Conteúdo

Página 1 - (AMLCD) Supply

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.For small orders, phone 408-737-7600 ext. 3468.________

Página 2

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply10 ______________________________________________________________________________________The

Página 3

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply______________________________________________________________________________________ 11Indu

Página 4

MAX166412 ______________________________________________________________________________________Diode SelectionThe MAX1664’s high switching frequency

Página 5

Ceramic capacitors are recommended because theyhave low ESR and the lowest profile. Typical ceramiccapacitors are the C3225X5R series from TDK andJMK3

Página 6

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply14 ______________________________________________________________________________________Figu

Página 7

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply______________________________________________________________________________________ 15Figu

Página 8

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) SupplyMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely emb

Página 9

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply2 _______________________________________________________________________________________ABSO

Página 10

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply_______________________________________________________________________________________ 3ELEC

Página 11

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply4 ___________________________________________________________________________________________

Página 12

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply_______________________________________________________________________________________5Typic

Página 13

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply6 _______________________________________________________________________________________Typi

Página 14

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply_______________________________________________________________________________________ 7PLL

Página 15

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply8 ___________________________________________________________________________________________

Página 16

MAX1664Active-Matrix Liquid Crystal Display(AMLCD) Supply_______________________________________________________________________________________ 9Fixe

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Rainbow-electronics MAX1664 Manual do Utilizador Página 1

Consulte online ou descarregue Manual do Utilizador para Sensores Rainbow-electronics MAX1664. Rainbow Electronics MAX1664 User Manual Manual do Utilizador

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Rainbow-electronics MAX1664 Manual do Utilizador Página 1

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