MAX1 7 0 5 Eva lu a t io n Kit
Evluates:5/MAX1706
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
♦ +0.9V to +4.5V Input Range
The MAX1705 evaluation kit (EV kit) is a step-up switch-
ing regulator for battery-powered systems operating
from 1 to 3 NiCd/NiMH cells or 1 Li-Ion cell. The EV kit
accepts a +0.9V to +4.5V input and converts it to a
4.5V step-up output and a 3.3V linear-regulator output.
It provides low quiescent current, high-efficiency pulse-
frequency-modulation operation for maximum battery
life, and a high-power, fixed-frequency pulse-width-
modulation mode. The MAX1705 features a built-in,
low-dropout linear post-regulator that reduces high-fre-
quency ripple.
♦ High-Power Output: 4.5V or Adjustable
♦ Dual Outputs: Step-Up and Linear Regulator
♦ 200mA Max Linear-Regulator Output Current
♦ Optional Track Mode for Highest Efficiency
♦ Low-Noise, 3.3V or Adjustable Output Voltage
♦ High-Efficiency Step-Up Converter: Up to 96%
♦ Up to 850mA Total Output Current
♦ Internal 300kHz Oscillator
The MAX1705 EV kit is a fully assembled and tested
surface-mount circuit board. It can also be used to
evaluate the MAX1706.
♦ Internal MOSFET and Synchronous Rectifier
♦ 1µA Shutdown Current
____________________Co m p o n e n t Lis t
♦ Power-Good Output
DESIGNATION QTY
DESCRIPTION
♦ Surface-Mount Components
22µF, 25V tantalum capacitor
Sprague 593D226X0025D2W or
AVX TPSD226M025R0200
C1
C8
1
1
♦ Fully Assembled and Tested
220µF, 10V low-ESR tantalum capacitor
Sprague 594D227X0010D2T,
Sprague 593D227X0010D2W, or
AVX TPSE227M010R0100
______________Ord e rin g In fo rm a t io n
C3
C4
1
1
0.1µF ceramic capacitor
22µF, 6.3V tantalum capacitor
Sprague 595D226X06R3B2T
PART
TEMP. RANGE
BOARD TYPE
MAX1705EVKIT
0°C to +70°C
Surface Mount
C5, C7, C9
3
1
0
0.33µF ceramic capacitors
22pF ceramic capacitor
Open
Note: To evaluate the MAX1706, request a MAX1706EEE free
sample with the MAX1705 EV kit.
C6
C2
Schottky diode
Motorola MBR0520L
D1
L1
1
1
10µH inductor
Sumida CDR74B-100
R1
R2, R4
R3
1
2
1
0
1
3
1
3
1
1
1
267kΩ, 1% resistor
100kΩ, 1% resistors
165kΩ, 1% resistor
Open
______________Co m p o n e n t S u p p lie rs
SUPPLIER
AVX
PHONE
FAX
(803) 946-0690
(847) 639-6400
(561) 241-7876
(402) 564-3131
(602) 303-5454
(603) 224-1961
(847) 956-0666
(203) 268-6261
(803) 626-3123
(847) 639-1469
(561) 241-9339
(402) 563-6418
(602) 994-6430
(603) 224-1430
(847) 956-0702
(203) 452-5670
R5
Coilcraft
R6
0Ω resistor
R7, R8, R9
U1
100kΩ, 5% resistors
MAX1705EEE (QSOP-16)
2-pin headers
Coiltronics
Dale-Vishay
Motorola
JU1, JU2, JU3
JU4
3-pin header
Sprague
None
Shunt
Sumida
None
MAX1705 PC board
Vishay/Vitramon
Note: Please indicate that you are using the MAX1705 when
contacting these component suppliers.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800