MAX5090EVKIT Maxim Integrated Products, MAX5090EVKIT Datasheet
MAX5090EVKIT
Manufacturer Part Number
MAX5090EVKIT
Description
EVAL KIT FOR MAX5090
Manufacturer
Maxim Integrated Products
Specifications of MAX5090EVKIT
Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
5V
Current - Output
2A
Voltage - Input
7.5 ~ 76V
Regulator Topology
Buck
Frequency - Switching
125kHz
Board Type
Fully Populated
Utilized Ic / Part
MAX5090
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The MAX5090 evaluation kit (EV kit) is a fully assembled
and tested surface-mount circuit board that contains a
step-down DC-DC switching regulator. The circuit uti-
lizes a MAX5090C adjustable converter configured for
a +5V output at up to 2A of current. The converter oper-
ates from a wide +7.5V to +76V input range.
The MAX5090 IC features a built-in high-side switch
and automatic pulse-skipping mode operation. The
MAX5090 EV kit demonstrates low quiescent current
and high efficiency up to 90%. The MAX5090 IC switch-
es at 127kHz but can be synchronized with an external
clock to operate at a switching frequency between
119kHz and 200kHz.
The MAX5090 EV kit is a fully assembled and tested
surface-mount circuit board. It can also be used to test
other fixed output-voltage versions: MAX5090A (3.3V)
and MAX5090B (5.0V).
Warning: The MAX5090 EV kit is designed to operate
with high voltages. Dangerous voltages are present on
this EV kit and on equipment connected to it. Users
who power up this EV kit or power the sources connect-
ed to it must be careful to follow appropriate safety pro-
cedures when working with high-voltage equipment.
Under severe fault or failure conditions, this EV kit may
dissipate large amounts of power, which could result in
the mechanical ejection of a component or component
debris at high velocity. Operate this EV kit with care to
avoid possible injury.
19-3996; Rev 0; 2/06
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.
DESIGNATION
C1, C2
C3
C4
C5
C6
QTY
________________________________________________________________ Maxim Integrated Products
2
1
1
1
1
68µF ±20%, 100V electrolytic
capacitors (12.5mm x 13.5mm)
Panasonic EEVFK2A680Q
0.47µF ±10%, 100V X7R ceramic
capacitor (0805)
Murata GRM21BR72A474KA
1µF ±20%, 100V X7R ceramic
capacitor (1206)
TDK C3216X7R2A105K
3.3µF ±10%, 25V X5R ceramic
capacitor (0805)
Murata GRM21BR61E335KA
0.047µF ±10%, 50V X7R ceramic
capacitor (0603)
Murata GRM188R71H473KA
TDK C1608X7R1H473K
General Description
DESCRIPTION
MAX5090 Evaluation Kit
o +7.5V to +76V Input Voltage Range
o 5V Output at Up to 2A
o 90% Efficiency
o Adjustable Output Voltage (1.25V to 11V)
o 127kHz Fixed Switching Frequency
o External Clock Synchronization (119kHz to
o Automatic Pulse-Skipping Mode at Light Load
o Fully Assembled and Tested
*PC board temperature rating only.
MAX5090EVKIT
DESIGNATION
200kHz)
PART
JU1
C7
C8
D1
L1
R1
R2
QTY
TEMP RANGE*
1
1
1
1
1
1
1
0°C to +70°C
Ordering Information
0.22µF ±20%, 16V X7R ceramic
capacitor (0603)
Murata GRM188R71C224K
TDK C1608X7R1C224K
100µF ±20%, 6.3V, 40mΩ electrolytic
capacitor (6.3mm x 5.9mm)
Sanyo 6SVQP100M
100V, 5A Schottky barrier rectifier
Diodes Incorporated PDS5100H
2-pin header
100µH, 3A inductor
Coilcraft DO5022P-104
Coiltronics DRA127-101
13.3kΩ ±1% resistor (0603)
4.42kΩ ±1% resistor (0603)
Component List
DESCRIPTION
IC PACKAGE
16 TQFN (5mm x 5mm)
Features
1
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MAX5090EVKIT Summary of contents
Page 1
... Fixed Switching Frequency o External Clock Synchronization (119kHz to 200kHz) o Automatic Pulse-Skipping Mode at Light Load o Fully Assembled and Tested Ordering Information PART TEMP RANGE* MAX5090EVKIT 0°C to +70°C *PC board temperature rating only. Component List DESIGNATION QTY 0.22µF ±20%, 16V X7R ceramic capacitor (0603) ...
Page 2
MAX5090 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION R3 1 10Ω ±5% resistor (0805 1MΩ ±5% resistor (0603 10kΩ ±5% resistor (0603) MAX5090CATE (TQFN 5mm 5mm) — 1 Shunts — 1 MAX5090 ...
Page 3
VIN VIN +7.5V TO +76V + + C1 C2 68µF 68µF PGND 100V 100V C3 0.47µF 100V SYNC R5 10kΩ SGND R4 1MΩ JU1 C5 3.3µF 25V Figure 1. MAX5090 EV Kit Schematic Evaluating Other Output Voltages The MAX5090C step-down ...
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 © 2006 Maxim Integrated Products Boblet Figure 3. MAX5090 EV Kit PC Board Layout— ...