MAX1549 Datasheet, PDF (1/11 Pages) Maxim Integrated Products – MAX1549 Evaluation Kit

19-3299; Rev 0; 5/04
MAX1549 Evaluation Kit
General Description
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.
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.
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.
Features
♦ 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)
♦ 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
♦ Fully Assembled and Tested
PART
MAX1549EVKIT
Ordering Information
TEMP RANGE
0^oC to +70^oC
IC PACKAGE
40 Thin QFN
(6mm x 6mm)
DESIGNATION
C1, C19
C2
QTY
DESCRIPTION
0 Not installed (E-case)
470µF, 2.5V, 6mΩ low-ESR polymer
1 capacitor (E-case)
Sanyo 2R5TPD470M6
220µF, 4V, 15mΩ low-ESR
C3
1 capacitor (D-case)
Sanyo 4TPE220MF
C4, C5
C6, C7
C8, C9
C10, C11,
C20–C26
10µF ±20%, 25V X5R ceramic
2
capacitors (1812)
Taiyo Yuden TMK432BJ106KM or
TDK C4532X5R1E106M
0 Not installed (1812)
0.1µF ±10%, 50V X7R ceramic
2
capacitors (0603)
Murata GRM188R71H104K or
equivalent
0 Not installed (0603)
Component List
DESIGNATION
C12
QTY
DESCRIPTION
2.2µF, 10V X5R ceramic capacitor
1 (0612)
TDK C1632X5R1A225KTB09N
C13, C16
470pF ±10%, 50V X7R ceramic
2
capacitors (0603)
Murata GRM188R71H471K or
equivalent
0.22µF, 16V X5R ceramic capacitor
C14
1 (0805)
Taiyo Yuden EMK212BJ224KG
1µF ±20%, 10V X5R ceramic
C15
1
capacitor (0805)
Taiyo Yuden LMK212BJ105KG or
TDK C2012X7R1C105MKT
C17, C18
100pF ±5%, 50V C0G ceramic
2
capacitors (0603)
Murata GRM1885C1H101J or
equivalent
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