MAX1642EVKIT Maxim Integrated, MAX1642EVKIT Datasheet

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MAX1642EVKIT

Manufacturer Part Number
MAX1642EVKIT
Description
Power Management IC Development Tools
Manufacturer
Maxim Integrated
Series
MAX1642, MAX1643r
Datasheet
MAX1642 EV Kit
The MAX1642 evaluation kit (EV kit) is a step-up switch-
ing regulator for one-cell, battery-powered systems. It
accepts a positive input between 0.9V and 1.65V and
converts it to a 3.3V preset output for currents up to
20mA. The MAX1642 EV kit provides ultra-low quies-
cent current and high efficiency for maximum battery
life. Operation up to 50kHz allows the use of a tiny sur-
face-mount inductor while minimizing interference with
sensitive intermediate frequencies in pagers and other
RF applications.
This EV kit is a fully assembled and tested surface-
mount circuit board. Additional pads on the bottom of
the board accommodate the external feedback resis-
tors for setting different output voltages. It can also be
used to evaluate the MAX1643.
* Please indicate that you are using the MAX1642 when you
contact these suppliers.
______________Component Suppliers
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
____________________Component List
DESIGNATION QTY
_______________General Description
AVX
Coilcraft
Coiltronics
Dale-Vishay
Sprague
Sumida
Vishay/Vitramon
R1, R2, R4
8/7/97 5:05 PM
SUPPLIER*
C1, C2
R3, R5
None
None
JU1
C3
C4
U1
L1
2
1
0
1
1
0
2
1
1
1
________________________________________________________________ Maxim Integrated Products
Page 1
(803) 946-0690
(847) 639-6400
(561) 241-7876
(402) 564-3131
(603) 224-1961
(847) 956-0666
(203) 268-6261
22µF, 6.3V tantalum capacitors
Sprague 595D226X06R3B2T
0.1µF ceramic capacitor
Open
3-pin header
100µH, 520mA inductor
Sumida CD54-101
Open
100kΩ, 5% resistors
MAX1642EUA (8-pin µMAX)
Shunt
MAX1642/MAX1643 PC board
PHONE
DESCRIPTION
(803) 626-3123
(847) 639-1469
(561) 241-9339
(402) 563-6418
(603) 224-1430
(847) 956-0702
(203) 452-5670
FAX
MAX1642 Evaluation Kit
____________________________Features
Note: To evaluate the MAX1643, request a MAX1643EUA free
sample with the MAX1642 EV kit.
The MAX1642 EV kit is fully assembled and tested.
Follow these steps to verify board operation. Do not
turn on the power supply until all connections are
completed.
1) Connect a 1V supply voltage to the VIN pad. The
2) Connect a voltmeter and load, if any, to the VOUT
3) For normal operation, place the shunt on JU1 across
4) Turn on the power supply to the board and verify
________________________Quick Start
MAX1642EVKIT
______________Ordering Information
0.9V to 1.65V Input Voltage Range
3.3V ±4% Output Voltage
Adjustable Output Voltage (2V to 5.2V)
80% Efficiency (V
Internal 500mA Synchronous Rectifier
2µA Shutdown Mode (MAX1642)
Low-Battery Detector (MAX1643)
Ultra-Small, 8-Pin µMAX Package
Power-Fail Output
Surface-Mount Components
Fully Assembled and Tested
ground connects to the GND pad.
pad.
pins 1 and 2.
that the output voltage is 3.3V.
PART
TEMP. RANGE
0°C to +70°C
IN
= 1.2V, I
LOAD
= 20mA)
BOARD TYPE
Surface Mount
1

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MAX1642EVKIT Summary of contents

Page 1

... Power-Fail Output Surface-Mount Components Fully Assembled and Tested DESCRIPTION ______________Ordering Information PART MAX1642EVKIT Note: To evaluate the MAX1643, request a MAX1643EUA free sample with the MAX1642 EV kit. ________________________Quick Start The MAX1642 EV kit is fully assembled and tested. Follow these steps to verify board operation. Do not turn on the power supply until all connections are completed ...

Page 2

MAX1642 EV Kit 8/7/97 5:05 PM Page 2 MAX1642 Evaluation Kit _______________Detailed Description The MAX1642 EV kit provides a 3.3V output from a 0.9V to 1.65V input voltage. It delivers up to 20mA with 80% typical conversion efficiency. The 3-pin ...

Page 3

MAX1642 EV Kit 8/7/97 5:05 PM Page 3 VIN 6.3V 1 SHDN 3 VIN R3 100k R4 OPEN Figure 1. MAX1642 EV Kit Schematic _______________________________________________________________________________________ MAX1642 Evaluation Kit L1 100 BATT LX C3 0.1 ...

Page 4

... 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. 4 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1997 Maxim Integrated Products Figure 3. MAX1642 EV Kit Component Placement Guide— ...

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