MAX1790EVKIT Maxim Integrated Products, MAX1790EVKIT Datasheet
MAX1790EVKIT
Manufacturer Part Number
MAX1790EVKIT
Description
Power Management Modules & Development Tools MAX1790 EVAL KIT MAX1790 EVAL KIT
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX1790EVKIT.pdf
(4 pages)
Specifications of MAX1790EVKIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX1790 evaluation kit (EV kit) is a fully assembled
and tested surface-mount circuit board that contains a
fixed-frequency, pulse-width-modulated (PWM), step-
up DC-DC converter. The EV kit provides a +5V output
voltage from an input as low as +2.6V. It delivers up to
500mA output current. The MAX1790 features an inter-
nal MOSFET switch, programmable soft-start, and fast
transient response.
The MAX1790 EV kit provides low quiescent current
and high efficiency for maximum battery life. Operation
at 640kHz allows the use of a tiny surface-mount inductor.
19-1563; Rev 0a; 1/00
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
DESIGNATION
None
None
None
None
JU1
C1
C2
C3
C4
C5
C6
C7
D1
R1
R2
R3
U1
L1
QTY
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
________________________________________________________________ Maxim Integrated Products
33µF, 10V, low-ESR electrolytic cap
(POSCAP)
Sanyo 10TPA33M
47µF, 6.3V, low-ESR electrolytic cap
(POSCAP)
Sanyo 6TPA47M
0.033µF ceramic capacitor (1206)
820pF ceramic capacitor (1206)
0.22µF ceramic capacitor (1206)
56pF ceramic capacitor (0805)
0.1µF ceramic capacitor (0805)
5.4µH, 1.6A inductor
Sumida CDRH5D18-5R4NC or
Sumitomo CXLM120-5R6
1A Schottky diode
Nihon EP10QY03 or
Toshiba CRS02
3-pin header
1MΩ ±1% resistor (1206)
324kΩ ±1% resistor (1206)
62kΩ ±5% resistor (1206)
MAX1790EUA (8-pin µMAX)
Shunt
MAX1790 PC board
MAX1790 EV kit data sheet
MAX1790 data sheet
General Description
Component List
DESCRIPTION
MAX1790 Evaluation Kit
o +2.6V to +5V Input Voltage Range
o 5V Output Voltage
o Up to 500mA Output Current
o 640kHz Fixed-Frequency PWM Operation
o Internal MOSFET Switch
o 0.1µA IC Shutdown Current
o Surface-Mount Components
o Fully Assembled and Tested
The MAX1790 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 +2.6V to +5V supply to the VIN pad.
2) Connect a voltmeter to the VOUT pad.
3) Verify that the shunt is across JU1 pins 1 and 2 to
4) Turn on the power supply and verify that the output
Note: Please indicate that you are using the MAX1790 when
contacting these component suppliers.
MAX1790EVKIT
Coilcraft
Nihon
Sumida
Sumitomo
Toshiba
Zetex
Connect ground to the GND pad.
enable the MAX1790.
is at +5V.
SUPPLIER
PART
TEMP. RANGE
0°C to +70°C
81-3-5952-8533
Component Suppliers
708-639-6400
847-843-7500
408-982-9660
949-455-2000
516-543-7100
Ordering Information
PHONE
Quick Start
8 µMAX
IC PACKAGE
81-3-5952-8690
708-639-1469
847-843-2798
408-982-9858
949-859-3963
516-864-7630
Features
FAX
1
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MAX1790EVKIT Summary of contents
Page 1
... Output Voltage 500mA Output Current o 640kHz Fixed-Frequency PWM Operation o Internal MOSFET Switch o 0.1µA IC Shutdown Current o Surface-Mount Components o Fully Assembled and Tested Ordering Information PART TEMP. RANGE MAX1790EVKIT 0°C to +70°C Component Suppliers SUPPLIER PHONE Coilcraft 708-639-6400 Nihon 847-843-7500 Sumida ...
Page 2
MAX1790 Evaluation Kit Detailed Description Shutdown Mode The EV kit features a shutdown mode that reduces the MAX1790 quiescent current to 0.1µA, preserving bat- tery life. The three-pin header, JU1, selects the shut- down mode (Table 1). Evaluating Other Output ...
Page 3
VIN VIN 1 SHDN 2 JU1 3 VIN GND C3 0.033µF Figure 1. MAX1790 EV Kit Schematic _______________________________________________________________________________________ MAX1790 Evaluation Kit C5 0.22µF L1 5.4µ SHDN LX U1 MAX1790 7 4 FREQ GND JU2 8 2 ...
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 © 2000 Maxim Integrated Products 1.0" ...