Rainbow-electronics MAX758A Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Sensores Rainbow-electronics MAX758A. Rainbow Electronics MAX758A User Manual Manual do Utilizador

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General Description
The MAX1605 boost converter contains a 0.5A internal
switch in a tiny 6-pin SOT23 package. The IC operates
from a +2.4V to +5.5V supply voltage but can boost
battery voltages as low as 0.8V up to 28V at the output.
The MAX1605 uses a unique control scheme providing
the highest efficiency over a wide range of load condi-
tions. An internal 0.5A MOSFET reduces external com-
ponent count, and a high switching frequency (up to
500kHz) allows for tiny surface-mount components. The
current limit can be set to 500mA, 250mA, or 125mA,
allowing the user to reduce the output ripple and com-
ponent size in low-current applications.
Additional features include a low quiescent supply cur-
rent and a shutdown mode to save power. The
MAX1605 is ideal for small LCD panels with low current
requirements but can also be used in other applica-
tions. A MAX1605EVKIT evaluation kit (EV kit) is avail-
able to help speed up design time.
________________________Applications
LCD Bias Generators
Cellular or Cordless Phones
Palmtop Computers
Personal Digital Assistants (PDAs)
Organizers
Handy Terminals
Features
Adjustable Output Voltage up to 28V
20mA at 20V from a Single Li+ Battery
88% Efficiency
Up to 500kHz Switching Frequency
Selectable Inductor Current Limit
(125mA, 250mA, or 500mA)
18µA Operating Supply Current
0.1µA Shutdown Current
Small 6-Pin SOT23 Package
MAX1605
28V Internal Switch LCD Bias Supply
in SOT23
________________________________________________________________ Maxim Integrated Products 1
V
CC
LXGND
16FB
5 LIM
SHDN
MAX1605
SOT23-6
TOP VIEW
2
34
Pin Configuration
V
IN
= 0.8V TO V
OUT
V
CC
= 2.4V TO 5.5V
V
OUT
= V
IN
TO 28V
ON
OFF
SHDN
V
CC
LIM
GND
LX
FB
MAX1605
L1
10µH
Typical Operating Circuit
19-1666; Rev 0; 7/00
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Ordering Information
PART
TEMP.
RANGE
PIN-
PACKAGE
SOT
MARK
MAX1605EUT-T -40°C to +85°C
6 SOT23-6 AAHP
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Resumo do Conteúdo

Página 1 - TOP VIEW

General DescriptionThe MAX1605 boost converter contains a 0.5A internalswitch in a tiny 6-pin SOT23 package. The IC operatesfrom a +2.4V to +5.5V supp

Página 2 - ELECTRICAL CHARACTERISTICS

MAX160528V Internal Switch LCD Bias Supplyin SOT2310 ______________________________________________________________________________________Package Inf

Página 3

MAX160528V Internal Switch LCD Bias Supplyin SOT23______________________________________________________________________________________ 11NOTES

Página 4

MAX160528V Internal Switch LCD Bias Supplyin SOT23Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied i

Página 5 - OUT(NOM)

MAX160528V Internal Switch LCD Bias Supplyin SOT232 _______________________________________________________________________________________ABSOLUTE MA

Página 6 - Detailed Description

MAX160528V Internal Switch LCD Bias Supplyin SOT23_______________________________________________________________________________________ 3ELECTRICAL

Página 7 - Shutdown (

7072767478802.0 3.02.5 3.5 4.0 4.5 5.0 5.5MAX1605 toc04SUPPLY VOLTAGE (V)EFFICIENCY (%)EFFICIENCY vs.SUPPLY VOLTAGE (L1 = 10µH)80VIN = 3.6VILIM = 500m

Página 8 - Design Procedure

MAX160528V Internal Switch LCD Bias Supplyin SOT23_______________________________________________________________________________________ 574767880828

Página 9 - Chip Information

MAX160528V Internal Switch LCD Bias Supplyin SOT236 _______________________________________________________________________________________Pin Descrip

Página 10 - Package Information

MAX160528V Internal Switch LCD Bias Supplyin SOT23_______________________________________________________________________________________ 7to 500kHz a

Página 11

MAX160528V Internal Switch LCD Bias Supplyin SOT238 _______________________________________________________________________________________Design Proc

Página 12

saturation region. When shut down, the input voltageexceeds the emitter voltage so the inactive transistorprovides high-impedance isolation between th

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