19-1858; Rev 1; 9/02
MAX1709 Evaluation Kit
General Description
Features
The MAX1709 evaluation kit (EV kit) is a step-up DC-DC
switching regulator for 1- to 3-cell battery inputs as well
as 2.5V or 3.3V regulated supply inputs. The EV kit
ꢀ 0.7V to V
Input Voltage Range
OUT
ꢀ Pin-Selectable 3.3V or 5V Output Voltage
(5V as Shipped)
accepts a positive input between 0.7V and V
and
OUT
converts it to a higher, pin-selectable output voltage.
ꢀ Adjustable Output Voltage
Efficiency is up to 87% with output load currents to 4A.
This EV kit operates at a fixed 600kHz PWM frequency,
allowing the use of a small inductor.
(2.5V to 5.5V, External Divider)
ꢀ Up to 4A Output Current
ꢀ 600kHz PWM Operation
A movable jumper on the EV kit selects either a 3.3V or
5V output voltage. Additional pads on the board
accommodate the resistors for output adjustment. This
EV kit uses surface-mount components and is fully
assembled and tested for quick evaluation.
ꢀ Internal 10A MOSFET Switch
ꢀ 4µA IC Shutdown Current
ꢀ Surface-Mount Components
ꢀ Fully Assembled and Tested
Component List
DESIGNATION QTY
DESCRIPTION
150µF, 6.3V low-ESR capacitors
Sanyo 6TPB150M or
Panasonic EEFUE0J151R
C1, C2
C4, C5
2
2
Ordering Information
150µF, 6.3V, 15m low-ESR capacitors
Panasonic EEFUE0J151R
PART
TEMP RANGE
IC PACKAGE
C6
C7
0
1
Not installed
MAX1709EVKIT
*Exposed pad.
0°C to +70°C
28-Pin TSSOP-EP*
0.22µF ceramic capacitor (1206)
1µF, 16V ceramic capacitor (1206)
Taiyo Yuden EMK316BJ105KL
TDK C3216X7R1C105M
C8
1
3
C9, C10, C12
0.1µF ceramic capacitors (1206)
10A Schottky diode (DPAK)
Central Semiconductor CSHD10-45L
ON Semiconductor (Motorola)
MBRD1035CTL or
Component Suppliers
D1
1
SUPPLIER
Central Semiconductor
Coilcraft
PHONE
FAX
STM-Microelectronics STPS8L30B
516-435-1110
708-639-6400
561-241-7876
402-564-3131
516-435-1824
708-639-1469
561-241-9339
402-563-6418
JU1, JU2, JU3
L1
3
1
2-pin headers
1µH, 10A power inductor
Coilcraft DO3316P-102HC or
Coiltronics UP2B-1R0
Coiltronics
Dale-Vishay
ON Semiconductor
(Motorola)
602-303-5454
602-994-6430
R1, R2, R3
R4
0
1
4
1
3
1
1
1
Not installed
2
5ꢀ resistor (1206)
5ꢀ resistors (1206)
Panasonic
714-373-7939
619-661-6835
617-259-0300
847-956-0666
408-573-4150
714-373-7183
619-661-1055
617-259-9442
847-956-0702
408-573-4159
R5–R8
U1
1M
Sanyo
MAX1709EUI 28-pin TSSOP-EP
Shunts
STM-Microelectronics
Sumida
None
None
None
None
MAX1709 PC board
MAX1709EV kit data sheet
MAX1709 data sheet
Taiyo Yuden
Note: Please indicate that you are using the MAX1709 when
contacting these component suppliers.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.