MAX1637 Evaluation Kit
General Description
The MAX1637 evaluation kit (EV kit) contains two sepa-
rate switching-regulator circuits. The first circuit converts
high-voltage battery power into a low-voltage supply rail
for next-generation notebook CPU cores. Its output is
fixed at 1.7V and delivers up to 7A output current with
greater than 87% efficiency. The second circuit gener-
ates a low-voltage supply for general-purpose use. Its
output is fixed at 2.5V and delivers up to 3A output cur-
rent. The battery range for both circuits is 4.5V to 22V,
and both require a separate 5V input voltage to power the
MAX1637. Output voltages can be adjusted by changing
the feedback resistor values.
The MAX1637 EV kit has excellent dynamic response to
correct for fast output transients. This EV kit is a fully
assembled and tested circuit board.
____________________________Features
o
4.5V to 22V Battery Voltage Range
o
4.5V to 5.5V Input Voltage Range (IC Power)
o
Output Voltage:
Fixed 1.7V, 7A (Circuit 1)
Fixed 2.5V, 3A (Circuit 2)
o
Circuit 1 Efficiency = 90%
(V
IN
= 7V, V
OUT
= 1.7V @ I
OUT
= 3A)
o
Circuit 2 Efficiency = 91%
(V
IN
= 7V, V
OUT
= 2.5V @ I
OUT
= 3A)
o
3碌A(chǔ) Max IC Shutdown Current
o
Fast MOSFETs for Low Switching Losses
o
Tight PC Board Layout for Low Switching Losses
o
300kHz Switching Frequency
o
Surface-Mount Construction
o
Fully Assembled and Tested
Evaluates: MAX1637
Ordering Information
PART
MAX1637EVKIT
TEMP. RANGE
0擄C to +70擄C
IC PACKAGE
16 QSOP
Component List
DESIGNATION
C1, C2, C3,
C4, C22
QTY
5
DESCRIPTION
10碌F, 25V ceramic capacitors
Tokin C34Y5U1E106Z or
United Chemi-Con/Marcon
THCR50E1E106ZT
470碌F, 6.3V, 30m鈩? low-ESR
tantalum capacitors
Kemet T510X477M006
470碌F, 4V, 55m鈩? low-ESR
tantalum capacitors
Sprague 594D477X0004R2T
0.1碌F ceramic capacitors
1500pF ceramic capacitors
1碌F ceramic capacitors
4.7碌F, 16V tantalum capacitors
Sprague 595D475X0016A2B
Not installed
0.01碌F ceramic capacitors
2A Schottky diode
SGS-Thomson STPS2L25U or
Nihon EC20QS03L
1A Schottky diode
International Rectifier 10BQ040 or
Motorola MBRS130LT3
N3
1
N2
1
N1
1
DESIGNATION
D2, D3
QTY
2
DESCRIPTION
Schottky diodes
Central Semiconductor CMPSH-3
2.2碌H power inductor
Panasonic P1F2R0HL,
Coiltronics UP4B-2R2, or
Coilcraft DO5022P-222HC
10碌H power inductor
Sumida CDRH125-100,
Coiltronics UP2B-100, or
Coilcraft DO3316P-103
N-channel MOSFET
Fairchild FDS6612 or FDS9412,
International Rectifier IRF7803, or
Siliconix Si9804DY
N-channel MOSFET
Fairchild FDS6680 or
Siliconix Si4420DY
N-channel MOSFET
International Rectifier IRF7403 or
Siliconix Si4412DY
N-channel MOSFET
International Rectifier IRF7413,
Fairchild NDS8410A, or
Siliconix Si4410DY
L1
1
C5, C6, C7,
C20
OR
C5, C6, C7,
C8, C20
C9, C10, C17, C19
C11, C16
C12, C15
C13, C18
C14, C21,
C23, C24
C25, C26
D1
4
5
4
2
2
2
0
2
1
L2
1
D4
1
N4
1
Component List continued on next page.
________________________________________________________________ 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 408-737-7600 ext. 3468.
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