search

Rainbow-electronics MAX1621 Manuel d'utilisateur Page 1

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Capteurs Rainbow-electronics MAX1621. Rainbow Electronics MAX1621 User Manual Manuel d'utilisatio

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 20
  • Table des matières
  • MARQUE LIVRES
    • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 0
General Description
The MAX1620/MAX1621 convert a 1.8V to 20V battery
voltage to a positive or negative LCD backplane bias
voltage. Backplane bias voltage can be automatically
disabled when the display logic voltage is removed,
protecting the display. These devices use very little PC
board area, come in ultra-small QSOP packages, and
require only small, low-profile external components.
Output voltage can be set to a desired positive or nega-
tive voltage range with external resistors, and adjusted
over that range with the on-board digital-to-analog con-
verter (DAC) or with a potentiometer. The MAX1620/
MAX1621 include a 5-bit DAC, allowing digital software
control of the bias voltage. The MAX1620 uses up/down
digital signaling to adjust the DAC, and the MAX1621
uses the System Management Bus (SMBus™) 2-wire
serial interface.
These devices use a low-cost, external, N-channel MOSFET
power switch or NPN transistor, and can be configured
for positive or negative output voltages. Operating cur-
rent is a low 150µA, typically provided from a display’s
logic supply of 3.0V to 5.5V. The MAX1620/MAX1621 are
available in a 16-pin QSOP package.
Applications
Notebook Computers
Palmtop Computers
Personal Digital Assistants
Portable Data-Collection Terminals
Features
♦ 1.8V to 20V Battery Input Voltage
♦ Automatic Disable when Display Logic
is Shut Down
♦ Extremely Small QSOP Package
♦ 32-Level Internal DAC
♦ SMBus Serial Interface (MAX1621)
♦ Positive or Negative Output Voltage
MAX1620/MAX1621
Digitally Adjustable LCD Bias Supplies
________________________________________________________________
Maxim Integrated Products
1
PART
MAX1620EEE
MAX1621EEE
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE PIN-PACKAGE
16 QSOP
16 QSOP
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
Ordering Information
19-1214; Rev 1; 1/98
LX
DHI
DLO
PGND
DOUT
FB
V
DD
POL
SHDN
DN
UP
REF
AGND
MAX1620
12.5V
TO
23.5V OUT
2V TO
12V
3V TO
5.5V
ON
/
OFF
DOWN
UP
LCDONPOK
BATT
Typical Operating Circuit
SMBus is a trademark of Intel Corp.
Pin Configuration
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
DHI
DLO
LX
PGND
AGND
V
DD
DOUT
FB
DN (SDA)
UP (SCL)
BATT
SHDN (SUS)
POK
REF
POL
LCDON
TOP VIEW
MAX1620
MAX1621
QSOP
( ) ARE FOR MAX1621 ONLY.
8
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Vue de la page 0
1 2 3 4 5 6 ... 19 20

Résumé du contenu

Page 1 - MAX1620/MAX1621

General DescriptionThe MAX1620/MAX1621 convert a 1.8V to 20V batteryvoltage to a positive or negative LCD backplane biasvoltage. Backplane bias voltag

Page 2

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies10 ______________________________________________________________________________________R1360k2V

Page 3

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies______________________________________________________________________________________ 11maximum

Page 4

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies12 ______________________________________________________________________________________The MAX1

Page 5

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies______________________________________________________________________________________ 13Reserved

Page 6

STARTCONDITIONMOSTSIGNIFICANTADDRESS BITLEASTSIGNIFICANTADDRESS BITSLAVEPULLSSDA LOWSLAVEPULLSSDA LOWREGSELD4OPR-LCDONOPR-SHDND3 D2 D1 D0SLAVEACKNOWLE

Page 7

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies______________________________________________________________________________________ 15STARTCON

Page 8

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies16 ______________________________________________________________________________________Setting

Page 9

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies______________________________________________________________________________________ 17COMPANY

Page 10

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies18 ______________________________________________________________________________________Diode Se

Page 11

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies______________________________________________________________________________________ 19________

Page 12

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies2 _______________________________________________________________________________________ABSOLUTE

Page 13

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies20 ______________________________________________________________________________________________

Page 14

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies_______________________________________________________________________________________3ELECTRICA

Page 15

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies4 _______________________________________________________________________________________Operatin

Page 16

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies_______________________________________________________________________________________ 5TIMING C

Page 17

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies6 _______________________________________________________________________________________________

Page 18

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies_______________________________________________________________________________________ 715161718

Page 19

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies8 _______________________________________________________________________________________External

Page 20

MAX1620/MAX1621Digitally Adjustable LCD Bias Supplies_______________________________________________________________________________________ 9t3t1UPDN

Commentaires sur ces manuels

Pas de commentaire
Produits connexes et manuels pour Capteurs Rainbow-electronics MAX1621
Capteurs Rainbow-electronics MAX799 Manuel d'utilisateur   (32 pages)
Capteurs Rainbow-electronics MAX1507 Manuel d'utilisateur   (12 pages)
Capteurs Rainbow-electronics MAX1771 Manuel d'utilisateur   (16 pages)
Capteurs Rainbow-electronics MAX865 Manuel d'utilisateur   (8 pages)
Capteurs Rainbow-electronics MAX1655 Manuel d'utilisateur   (12 pages)
Capteurs Rainbow-electronics LM34 Manuel d'utilisateur   (12 pages)
Capteurs Rainbow-electronics MAX776 Manuel d'utilisateur   (16 pages)
Capteurs Rainbow-electronics MAX1403 Manuel d'utilisateur   (36 pages)
Capteurs Rainbow-electronics MAX100 Manuel d'utilisateur   (16 pages)
Capteurs Rainbow-electronics MAX681 Manuel d'utilisateur   (8 pages)
Capteurs Rainbow-electronics MAX1791 Manuel d'utilisateur   (20 pages)
Capteurs Rainbow-electronics MAX1718 Manuel d'utilisateur   (35 pages)
Capteurs Rainbow-electronics LM76 Manuel d'utilisateur   (15 pages)
Capteurs Rainbow-electronics MAX1730 Manuel d'utilisateur   (8 pages)
Capteurs Rainbow-electronics MAX1401 Manuel d'utilisateur   (36 pages)
Capteurs Rainbow-electronics MAX1813 Manuel d'utilisateur   (38 pages)
Capteurs Rainbow-electronics MAX1638 Manuel d'utilisateur   (16 pages)
Capteurs Rainbow-electronics MAX1402 Manuel d'utilisateur   (40 pages)
Capteurs Rainbow-electronics MAX1618 Manuel d'utilisateur   (18 pages)
Capteurs Rainbow-electronics LM35 Manuel d'utilisateur   (13 pages)
  • DSP4YOU Atari Acroprint Time Recorder Certance Contura
  • Outback Power Systems Chargeurs de batteries pour voitures Oregon Scientific Caméras de sécurité Ableton Logiciel InSinkErator Meuleuses droites Sharp Multifonctionnels
  • Acer K242HYL Liebherr L 524 Silvercrest SDM 1000 A1 Mcz Cap NATURAL Westinghouse DPF-0703
  • Electrolux EOK86030X Manuel de l'utilisateur Lg F72700WH Manuel de l'utilisateur Sony D-NE520 Manuel de l'utilisateur Zanussi ZWT71401WA Manuel de l'utilisateur