Rainbow Electronics MAX1714A - Manual

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.
Features
♦ +5V to +24V Input Voltage Range
♦ Preset 2.5V Output Voltage
♦ 1.0V to 5.5V Adjustable Output
♦ 4A Output Current
♦ 94% Efficient (V
OUT = 2.5V, V BATT = 7V,
I LOAD = 2A)
♦ 300kHz Switching Frequency
♦ No Current-Sense Resistor
♦ Power-Good Output
♦ Low-Profile Components
♦ Fully Assembled and Tested
Evaluates: MAX1714A
MAX1714A Evaluation Kit
________________________________________________________________ Maxim Integrated Products 1
19-1536; Rev 1; 12/99
Component List
PART
MAX1714AEVKIT 0°C to +70°C
TEMP. RANGE IC PACKAGE
20 QSOP
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.
Ordering Information
Not installed 0
R1, R2,
R3, R8, R9
Dual N-channel MOSFET
Fairchild FDS6982A
1 N1A, N1B
2-pin headers 2 JU1, JU2
DESIGNATION DESCRIPTION QTY
100k Ω ±5% resistor (0805) 1 R4
1M Ω ±5% resistors (0805) 2 R5, R6
200 Ω ±5% resistor (0805) 1 R8
MAX1714AEEP (20-pin QSOP) 1 U1
Shunt (JU1) 1 None
MAX1714A PC board 1 None
MAX1714A data sheet 1 None
MAX1714A EV kit data sheet 1 None
100mA, 30V Schottky diode
Central Semiconductor CMPSH-3
1 D2
1A, 30V Schottky diode
Nihon EP10QY03 or EC10QS03 or
Motorola MBRS130LT3
1 D1
3.3µF, 10V, X5R ceramic cap (1206)
Taiyo Yuden LMK316BJ335ML
1 C6
DESIGNATION
4.7µF, 10V, X5R ceramic cap (1206)
Taiyo Yuden LMK316BJ475ML
1 C5
0.22µF ceramic capacitor (1206) 1 C4
0.1µF ceramic capacitor (0805) 1 C3
330µF, 6.3V, 45m Ω C100M
low-ESR capacitor
Sanyo 6TPB330M or
Kemet T510X337M010AS
1 C2
10µF, 25V ceramic capacitor (1812)
Taiyo Yuden TMK432BJ106KM or
Tokin C34Y5U1E106Z
1 C1
DESCRIPTION QTY
2200pF ceramic capacitor (0805) 1 C7
20 Ω ±5% resistor (0805) 1 R7
4.7µH power inductor
Sumida CDRH124-4R7MC (shielded),
Coiltronics UP2B-4R7 (unshielded)
1 L1