19-3299; Rev 0; 5/04
MAX1549 Evaluation Kit
General Description
Features
The MAX1549 evaluation kit (EV kit) demonstrates the
MAX1549’s standard application circuit. This DC-DC
converter steps down high-voltage batteries and/or AC
adapters, generating precision low-voltage chipset and
RAM power supplies for notebook computers.
♦ 5V to 20V Input Voltage Range
♦ Four Digitally Selectable Operating Voltages
(OUT1)
♦ Dynamically Selectable Output Voltages
0.7V/1.0V/1.3V/1.5V (OUT1, Adjustable from 0.5V
to 2.0V)
The MAX1549 EV kit provides a dynamically adjustable
0.7V to 1.5V output voltage range (OUT1), and a fixed
2.5V output voltage (OUT2) from a 5V to 20V battery
input range. It delivers up to a 6A output current for
OUT1, and up to a 4A output current for OUT2, with
greater than 90% efficiency. The EV kit operates at
300kHz switching frequency and has superior line- and
load-transient response.
♦ Fixed 2.5V Output Voltage (OUT2, Adjustable from
0.5V to 2.7V)
♦ 6A Output Current (OUT1)
♦ 4A Output Current (OUT2)
♦ 300kHz Switching Frequency
♦ Independent Power-Good Outputs
♦ Low-Profile Components
This EV kit is a fully assembled and tested circuit
board. It is capable of evaluating other dynamically
adjustable output voltages in the 0.5V to 2.0V range by
changing R10–R14. Other fixed output voltages in the
0.5V to 2.7V range can be evaluated by changing R20
and R21.
♦ Fully Assembled and Tested
Ordering Information
PART
TEMP RANGE
IC PACKAGE
40 Thin QFN
(6mm x 6mm)
MAX1549EVKIT
0oC to +70oC
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
Not installed (E-case)
C1, C19
0
2.2µF, 10V X5R ceramic capacitor
(0612)
TDK C1632X5R1A225KTB09N
C12
C13, C16
C14
1
2
1
1
470µF, 2.5V, 6mΩ low-ESR polymer
capacitor (E-case)
Sanyo 2R5TPD470M6
C2
1
470pF 10%, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71H471K or
equivalent
220µF, 4V, 15mΩ low-ESR
capacitor (D-case)
Sanyo 4TPE220MF
C3
1
0.22µF, 16V X5R ceramic capacitor
(0805)
Taiyo Yuden EMK212BJ224KG
10µF 20%, 25V X5R ceramic
capacitors (1812)
Taiyo Yuden TMK432BJ106KM or
TDK C4532X5R1E106M
C4, C5
C6, C7
C8, C9
2
0
2
1µF 20%, 10V X5R ceramic
capacitor (0805)
Taiyo Yuden LMK212BJ105KG or
TDK C2012X7R1C105MKT
Not installed (1812)
C15
0.1µF 10%, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71H104K or
equivalent
100pF 5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H101J or
equivalent
C17, C18
2
C10, C11,
C20–C26
0
Not installed (0603)
________________________________________________________________ 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.