19-1536; Rev 1; 12/99
MAX1714A Evaluation Kit
General Description
The MAX1714A evaluation kit (EV kit) demonstrates
a standard 4A application circuit. This DC-DC con-
verter steps down high-voltage batteries and/or
AC adapters, generating a precision, low-voltage
rail for use as chipset, DRAM, and other low-voltage
supplies. For higher current applications up to 12A,
refer to the MAX1714A data sheet.
The MAX1714A EV kit provides a 2.5V output voltage
from a +5V to +24V battery input range. It delivers up to
4A output current with greater than 90% efficiency while
operating at a 300kHz switching frequency, and has
superior line- and load-transient response.
This EV kit is a fully assembled and tested circuit
board. It also allows evaluation of other output voltages
in the 1.0V to 5.5V range by changing feedback resis-
tors R1 and R2.
o
+5V to +24V Input Voltage Range
o
Preset 2.5V Output Voltage
o
1.0V to 5.5V Adjustable Output
o
4A Output Current
o
94% Efficient (V
OUT
= 2.5V, V
BATT
= 7V,
I
LOAD
= 2A)
o
300kHz Switching Frequency
o
No Current-Sense Resistor
o
Power-Good Output
o
Low-Profile Components
o
Fully Assembled and Tested
Features
Evaluates: MAX1714A
Ordering Information
PART
MAX1714AEVKIT
TEMP. RANGE
0擄C to +70擄C
IC PACKAGE
20 QSOP
Component List
DESIGNATION QTY
C1
1
DESCRIPTION
10碌F, 25V ceramic capacitor (1812)
Taiyo Yuden TMK432BJ106KM or
Tokin C34Y5U1E106Z
330碌F, 6.3V, 45m鈩?C100M
low-ESR capacitor
Sanyo 6TPB330M or
Kemet T510X337M010AS
0.1碌F ceramic capacitor (0805)
0.22碌F ceramic capacitor (1206)
4.7碌F, 10V, X5R ceramic cap (1206)
Taiyo Yuden LMK316BJ475ML
3.3碌F, 10V, X5R ceramic cap (1206)
Taiyo Yuden LMK316BJ335ML
2200pF ceramic capacitor (0805)
1A, 30V Schottky diode
Nihon EP10QY03 or EC10QS03 or
Motorola MBRS130LT3
100mA, 30V Schottky diode
Central Semiconductor CMPSH-3
DESIGNATION QTY
JU1, JU2
L1
2
1
DESCRIPTION
2-pin headers
4.7碌H power inductor
Sumida CDRH124-4R7MC (shielded),
Coiltronics UP2B-4R7 (unshielded)
Dual N-channel MOSFET
Fairchild FDS6982A
Not installed
100k鈩?鹵5% resistor (0805)
1M鈩?鹵5% resistors (0805)
20鈩?鹵5% resistor (0805)
200鈩?鹵5% resistor (0805)
MAX1714AEEP (20-pin QSOP)
Shunt (JU1)
MAX1714A PC board
MAX1714A data sheet
MAX1714A EV kit data sheet
C2
C3
C4
C5
C6
C7
D1
1
1
1
1
1
1
1
N1A, N1B
R1, R2,
R3, R8, R9
R4
R5, R6
R7
R8
U1
None
None
None
None
1
0
1
2
1
1
1
1
1
1
1
D2
1
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
1
2
3
4
5
6
