19-0718; ꢁev 0; 1/07
MAX5097A Evaluation Kit
Evluates:MX5097A
General Description
Features
The MAX5097A evaluation kit (EV kit) demonstrates the
MAX5097A in a standard application circuit demon-
strating high efficiency. The EV kit circuit features a
MAX5097A IC in a 16-pin TQFN package. The EV kit
can operate from a 5V to 40V input source.
♦ 5V to 40V Input Voltage (Buck Mode)
♦ 4V to 40V Input Voltage (LDO Mode)
♦ 3.3V Output at Up to 600mA (Buck Mode)
♦ Low Quiescent Current 3.3V Output at Up to
The MAX5097A EV kit includes a current-mode DC-DC
step-down regulator (Buck Mode) and a selectable low-
quiescent-current LDO regulator for operation at light-
load (LDO Mode). The step-down regulator provides a
3.3V output with up to 600mA output current. In LDO
Mode, the MAX5097A IC provides up to 100mA output
current. The EV kit circuit’s step-down regulator oper-
ates at a switching frequency of 330kHz, thus allowing
the use of small ceramic capacitors at the output. The
MAX5097A is capable of synchronizing to an external
digital clock.
100mA (LDO Mode)
♦ Configurable Output Voltage
♦ 330kHz Switching Frequency
♦ Capable of Synchronizing to an External Clock
♦ Open-Drain RESET Output PCB Pad
♦ Surface-Mount Components
♦ Fully Assembled and Tested
Ordering Information
The MAX5097A EV kit can be reconfigured for other
output voltages by selecting appropriate external com-
ponents. The EV kit circuit features soft-start, output
current-limit, and an open-drain active-low reset output
PCB pad.
PART
TEMP RANGE
IC PACKAGE
MAX5097AEVKIT+
0°C to +70°C*
16 TQFN-EP
+Denotes a lead-free and ꢁoHS-compliant EV kit.
*This limited temperature range applies to the EV kit PCB only.
The MAX5097A IC temperature range is -40°C to +125°C.
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
150µF, 50V electrolytic capacitor
(8mm x 10.2mm)
Panasonic EEVFK1H151P
0.047µF 10ꢀ, 50V X7ꢁ ceramic
capacitor (0603)
Murata GꢁM188ꢁ71H473K
C1
C2
C3
C4
C5
C6
C7
1
1
1
1
1
1
1
C8
D1
1
1
0.22µF 10ꢀ, 50V X5ꢁ ceramic
capacitor (0805)
Murata GꢁM21Bꢁ71H224K
2.0A, 60V high-speed switching diode
(SMA)
Diodes Inc MUꢁS120-13-F
JU1, JU2
JU3
2
1
2-pin headers
3-pin header
22µF 20ꢀ, 6.3V X5ꢁ ceramic
capacitor (1206)
Murata GꢁM31Cꢁ60J226M
22µH, 1.6A inductor
Sumida CDꢁH8D28-220NP
L1
1
1200µF 5ꢀ, 50V C0G ceramic
capacitor (0603)
Murata GꢁM1885C1H122J
ꢁ1
ꢁ2
0
1
1
3
1
Not installed, resistor (0603)
0Ω 5ꢀ resistor (0603)
ꢁ3
100kΩ 1ꢀ resistor (0603)
100kΩ 5ꢀ resistors (0603)
10kΩ 5ꢀ resistor (0603)
40V input, 330kHz step-down
converter with LDO
22pF 5ꢀ, 50V C0G ceramic
capacitor (0603)
Murata GꢁM1885C1H220J
ꢁ4, ꢁ5, ꢁ7
ꢁ6
0.01µF 10ꢀ, 50V X7ꢁ ceramic
capacitor (0603)
Murata GꢁM188ꢁ71H103K
U1
1
MAX5097AATE+
(16-pin, 5mm x 5mm thin QFN-EP)
1µF 10ꢀ, 10V X5ꢁ ceramic
capacitor (0603)
Murata GꢁM188ꢁ61A105K
—
—
3
1
Shunts
PCB: MAX5097AEVKIT+
________________________________________________________________ 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.