MAX1556 Datasheet, PDF (1/6 Pages) Maxim Integrated Products – MAX1556 Evaluation Kit

19-3415; Rev 0; 9/04
MAX1556 Evaluation Kit
General Description
The MAX1556 evaluation kit (EV kit) is a fully assembled
and tested circuit board that evaluates the MAX1556
and MAX1557 PWM step-down DC-DC converters. The
circuit operates from 2.6V to 5.5V. The MAX1556 deliv-
ers up to 1.2A and has pin-selectable 1.8V, 2.5V, 3.3V,
and adjustable output. The MAX1557 delivers up to
600mA and has pin-selectable 1V, 1.3V, 1.5V, and
adjustable output. Each circuit features an on-board
shutdown control.
Component List
DESIGNATION
C1, C6
C2, C7
C3, C8
C4, C9
C5, C10
C11
JU1–JU6
L1
L2
R1, R3
R2, R4
R5
U1
U2
None
None
QTY
2
2
0
2
0
1
6
1
1
0
0
1
1
1
6
1
DESCRIPTION
10µF ±10%, 6.3V X5R ceramic
capacitors (0805)
Murata GRM21BR60J106K or
equivalent
22µF ±10%, 6.3V X5R ceramic
capacitors (1206)
Murata GRM31CR60J226K or
equivalent
Not installed, capacitors (0805)
0.001µF ±10%, 50V X7R ceramic
capacitors (0402)
Murata GRP155R71H102K or
equivalent
Not installed, capacitors (0603)
0.47µF ±10%, 6.3V X5R ceramic
capacitor (0402)
Murata GRM155R60J474K or
equivalent
3-pin headers
3.3µH inductor, 0.036Ω, 1.3A,
5.0mm x 5.0mm x 2.0mm
Taiyo Yuden LMNP04SB3R3N
4.7µH inductor, 0.05Ω, 1.2A, 5.0mm
x 5.0mm x 2.0mm
Taiyo Yuden LMNP04SB4R7N
Shorted on PC board, resistors
(0603)
Not installed, resistors (0603)
100Ω ±1% resistor (0402)
MAX1556ETB
MAX1557ETB
Shunts, position 2
MAX1556 EV kit PC board
Features
♦ Up to 97% Efficiency
♦ 95% Efficiency at 1mA Load Current
♦ 1MHz PWM Switching Frequency
♦ Tiny Inductors
♦ Pin-Selectable Output Voltages
MAX1556: 3.3V, 2.5V, 1.8V, and Adjustable
MAX1557: 1.5V, 1.3V, 1.0V, and Adjustable
♦ 1.2A Guaranteed Output Current (MAX1556)
♦ Voltage Positioning Optimizes Load-Transient
Response
♦ Low 16µA Quiescent Current
♦ Low 27µA Quiescent Current in Dropout
♦ Low 0.1µA Shutdown Current
♦ Analog Soft-Start with Zero Overshoot Current
♦ Small, 10-Pin, 3mm x 3mm TDFN Package
♦ Fully Assembled and Tested
Ordering Information
PART
TEMP RANGE
MAX1556EVKIT
0°C to +70°C
*EP = Exposed paddle.
IC PACKAGE
10 TDFN-EP*
Component Suppliers
SUPPLIER
PHONE
WEBSITE
Murata
Taiyo Yuden
814-237-1431
408-573-4150
www.murata.com
www.t-yuden.com
Vishay
402-563-6866 www.vishay.com
Note: Indicate that you are using the MAX1556 when contacting
these component suppliers.
Quick Start
Recommended Equipment
• One variable DC power supply capable of supply-
ing up to 5.5V at 1.2A
• One voltmeter (DMM)
________________________________________________________________ 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.