MAX1606EUA+T Maxim Integrated Products, MAX1606EUA+T Datasheet

IC STEP-UP DC-DC CONV 28V 8-UMAX

MAX1606EUA+T

Manufacturer Part Number
MAX1606EUA+T
Description
IC STEP-UP DC-DC CONV 28V 8-UMAX
Manufacturer
Maxim Integrated Products
Type
Step-Up (Boost)r
Datasheet

Specifications of MAX1606EUA+T

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
0.8 ~ 28 V
Current - Output
500mA
Frequency - Switching
500kHz
Voltage - Input
2.4 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Power - Output
330mW
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX1606 is a step-up DC-DC converter that con-
tains a 0.5A internal power switch and a 0.5A output
isolation switch in an 8-pin µMAX 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.
The MAX1606 uses a unique control scheme that pro-
vides high efficiency over a wide range of load condi-
tions. An internal 0.5A MOSFET reduces external
component 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 component size in low-current applications.
Additional features include a low quiescent supply cur-
rent and a true shutdown mode that saves power by
disconnecting the output from the input. The MAX1606
is ideal for small LCD panels with low current require-
ments but can also be used in other applications. A
MAX1606 evaluation kit is available to help speed up
design time.
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.
19-1744; Rev 1; 1/04
________________________Applications
V
V
IN
CC
ON
= 0.8V TO 5.5V
= 2.4V TO 5.5V
LCD Bias Generators
Cellular or Cordless Phones
Palmtop Computers
Personal Digital Assistants (PDAs)
Organizers
Handy Terminals
OFF
Typical Operating Circuit
________________________________________________________________ Maxim Integrated Products
SW
BATT
V
LIM
SHDN
CC
MAX1606
General Description
28V Internal Switch LCD Bias Supply
GND
LX
FB
V
OUT
= V
IN
TO 28V
♦ Adjustable Output Voltage up to 28V
♦ 20mA at 20V from a Single Li+ Battery
♦ True Shutdown (Output Disconnected from Input)
♦ Output Short-Circuit Protection
♦ 88% Efficiency
♦ Up to 500kHz Switching Frequency
♦ Selectable Inductor Current Limit
♦ 0.1µA Shutdown Current
♦ 8-Pin µMAX Package
MAX1606EUA
(125mA, 250mA, or 500mA)
TOP VIEW
PART
with True Shutdown
BATT
GND
V
FB
CC
3
4
1
2
-40 C to +85 C
TEMP RANGE
Ordering Information
MAX1606
MAX
Pin Configuration
8
7
6
5
SW
SHDN
LIM
LX
PIN-PACKAGE
8 µMAX
Features
1

Related parts for MAX1606EUA+T

MAX1606EUA+T Summary of contents

Page 1

... FB LIM ON OFF SHDN GND ________________________________________________________________ Maxim Integrated Products 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. with True Shutdown ♦ Adjustable Output Voltage up to 28V ♦ 20mA at 20V from a Single Li+ Battery ♦ True Shutdown (Output Disconnected from Input) ♦ ...

Page 2

Internal Switch LCD Bias Supply with True Shutdown ABSOLUTE MAXIMUM RATINGS V , FB, BATT GND .....................................-0.3V to +6V CC BATT to SW ..............................................................-0.3V to +6V SHDN, LIM to GND.....................................-0. GND ..............................................................-0.3V to ...

Page 3

Internal Switch LCD Bias Supply ELECTRICAL CHARACTERISTICS (continued) = BATT = SHDN 3.3V PARAMETER SYMBOL CONTROL INPUTS (SHDN, LIM) SHDN Input Threshold SHDN Input Bias Current LIM Input Low Level LIM Input ...

Page 4

Internal Switch LCD Bias Supply with True Shutdown ELECTRICAL CHARACTERISTICS (continued) = BATT = SHDN 3.3V -40°C to +85°C, unless otherwise noted.) (Note PARAMETER SYMBOL Minimum LX Off-Time t SW ...

Page 5

Internal Switch LCD Bias Supply = 3.6V 10µH, SHDN = LIM = 3.3V BATT EFFICIENCY vs. SUPPLY VOLTAGE 100 I = 5mA OUT 1mA OUT 60 50 ...

Page 6

Internal Switch LCD Bias Supply with True Shutdown = 3.6V 10µH, SHDN = LIM = 3.3V BATT LINE TRANSIENT MAX1606 toc13 18.1V 18V B 17.9V 100 s/div A: ...

Page 7

Internal Switch LCD Bias Supply V = 0.8V TO 5.5V BATT 2. LIM C1 SHUTDOWN LOGIC ON SHDN OFF Figure 1. Functional Diagram V CC (2.4V TO 5.5V ...

Page 8

Internal Switch LCD Bias Supply with True Shutdown 0.8V TO 5.5V BATT LX BATT 10pF MAX1606 V = 2. LIM 1 F ...

Page 9

Internal Switch LCD Bias Supply V = 0. 2. Figure 4. Negative Voltage for LCD Bias switching current. Choose a reverse breakdown voltage greater ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products 4X S ...

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