19-4759; Rev 1; 1/99
MAX1701 Evaluation Kit
________________General Description
The MAX1701 evaluation kit provides a regulated 3.3V
output while operating on input voltages as low as 0.7V.
The input may be a DC source or a 1 to 2鈥揷ell battery.
Efficiency is up to 95% with output loads up to 200mA.
The kit, which uses surface-mount components, is fully
assembled and tested for quick evaluation. Jumpers
are provided to select the output voltage, switching
mode, and shutdown control. This EV kit can also be
used to evaluate the MAX1700. Simply order a free
sample of the MAX1700EEE and replace the
MAX1701EEE that comes installed on the board.
____________________________Features
o
3.3V Output
o
200mA Output
o
0.7V to 3.5V Input
o
Up to 95% Efficiency
o
3碌A(chǔ) Shutdown Current
o
300kHz PWM Operation
o
Optional Low-Power PFM Mode
o
Small Surface-Mount Components
Evaluates: MAX1700/MAX1701
____________________Component List
DESIGNATION QTY
C1
C2, C3
C4
C5
1
2
1
1
DESCRIPTION
22碌F, 25V, low-ESR tantalum capacitor
AVX TPSD226M025R0200
Sprague 593D226X0025D
0.22碌F, 25V ceramic capacitors
0.10碌F, 25V ceramic capacitor
100碌F, 10V low-ESR tantalum capaci-
tor AVX TPSD107M010R0100 or
Sprague 593D107X0010D7
Not installed. Space for optional user
capacitor.
0.5A, 20V Schottky diode
Motorola MBR0520L
3-pin jumpers
2-pin jumpers
10碌H, 1.6A power inductor
CoilCraft DO3316-103,
Coiltronics UP1B-100,
Sumida CDR74B-100
100k鈩? 1% resistors
Not installed
100k鈩? 5% resistors
1M鈩? 5% resistors
10鈩? 5% resistor
MAX1701EEE
Shunts
3.4鈥?x 2.4鈥?printed circuit board
MAX1700/MAX1701 data sheet
_______________Ordering Information
PART
MAX1701EVKIT
TEMP. RANGE
0擄C to +70擄C
PIN-PACKAGE
16-pin QSOP
______________Component Suppliers
SUPPLIER
AVX
Coilcraft
Coiltronics
Sprague
Sumida
Motorola
PHONE
(803) 946-0690
(847) 639-6400
(561) 241-7876
(603) 224-1961
(847) 956-0666
(303) 675-2140
FAX
(803) 626-3123
(847) 639-1469
(561) 241-9339
(603) 224-1430
(847) 956-0702
(303) 675-2150
C6, C7
D1
J1, J2, J3
J4, J5
0
1
3
2
_________________________Quick Start
The MAX1701 EV kit is shipped fully assembled and
tested. Follow these steps to verify board operation.
Do
not turn on the power supply until all connections
are completed.
1) Verify that the shunts are connected as listed in
Table 2 for a 3.3V output.
2) Connect a +1.1V to +3.3V supply to the pad marked
VIN. The ground connects to the GND pad. Note:
the input voltage may drop as low as 0.7V after start-
up.
3) Connect a voltmeter to the VOUT pad.
4) Turn on the power and verify that the output voltage
is 3.3V.
5) Connect a load (if any).
L1
1
R1, R4, R6
R2, R3, R5
R7, R8, R9
R10, R11, R12
R13
U1
None
None
None
3
3
3
3
1
1
5
1
1
________________________________________________________________
Maxim Integrated Products
1
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.
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