Quick Start

Required Equipment

The following equipment is required before beginning:

• One DC power supply capable of supplying any

voltage between 3V and 5.5V at 3A

• One Peltier TEC module with a thermistor (NTC 10k

Ω

at +25°C)

• One digital voltmeter (DVM)

MAX1978 Evaluation Kit

2

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SUPPLIER

PHONE

FAX

WEBSITE

Central Semiconductor

631-435-1110

631-435-1824

www.centralsemi.com

Diodes Inc.

805-446-4800

805-381-3899

www.diodes.com

Fairchild

888-522-5372

—

www.fairchildsemi.com

General Semiconductor

760-804-9258

760-804-9259

www.gensemi.com

International Rectifier Co. (IRC)

361-992-7900

361-992-3377

www.irctt.com

Murata

770-436-1300

770-436-3030

www.murata.com

Sumida

847-545-6700

847-545-6720

www.sumida.com

Taiyo Yuden

800-348-2496

847-925-0899

www.t-yuden.com

TDK

847-803-6100

847-390-4405

www.component.tdk.com

Component Suppliers

*EP = Exposed pad.

DESIGNATION

QTY

DESCRIPTION

C20

0

Not installed (1210)

JU1, JU3, JU4

3

3-pin headers

JU2

1

2-pin header

L1, L2

2

3µH, 2.4A inductors

Sumida CDRH5D28-3R0NC

R1

1

0.068

Ω ±1%, 0.5W sense resistor

(1206)

IRC LRC-LR1206-01-R068-F

R2

1

49.9k

Ω ±1% resistor (0402)

R3

1

100k

Ω ±1% resistor (0402)

R4–R8

0

Not installed (0402)

R9

1

80.6k

Ω ±1% resistor (0603)

R10

1

69.8k

Ω ±1% resistor (0603)

R11

1

105k

Ω ±1% resistor (0603)

R12

1

20k

Ω ±1% resistor (0603)

R13

1

10k

Ω temp coefficient = 25ppm/°C,

0.1% resistor (0805)

R14

1

1M

Ω ±5% resistor (0402)

R15

1

20k

Ω ±5% resistor (0402)

R16

1

100k

Ω ±5% resistor (0402)

R25, R26

2

100k

Ω ±5% resistors (0603)

Component List (continued)

DESIGNATION

QTY

DESCRIPTION

SW1

1

Switch, momentary, normally open

U1

1

MAX1978ETM 48-pin thin QFN-EP*

None

4

Shunts

DAC AND INTERFACE COMPONENTS. REQUIRED ONLY

FOR EVALUATION.

C13, C14, C15

3

0.1µF, 16V X7R ceramic capacitors

(0603)

Murata GRM188R71C104K

Taiyo Yuden EMK107BJ104KA

TDK C1608X7R1C104K

C18

0

Not installed (0603)

J1

1

DB25 male right-angle connector

Q1, Q2, Q3

3

NPN bipolar transistors, SOT23

Central Semiconductor CMPT3904

Diodes Inc. MMBT3904

Fairchild MMBT3904

General Semiconductor MMBT3904

R17, R18, R19,

R23

4

1k

Ω ±5% resistors (0603)

R20, R21, R22

3

4.7k

Ω ±5% resistors (0603)

R24

1

20k

Ω potentiometer (multiturn)

U2

1

MAX5144EUB 10-pin µMAX

Note: Please indicate you are using the MAX1978 when contacting these manufacturers.