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General Description

The MAX17014 evaluation kit (EV kit) is a fully assembled

and tested surface-mount printed-circuit board (PCB)

that provides the voltages and features required for thin-

film transistor (TFT) liquid-crystal display (LCD) TV pan-

els. The EV kit includes a step-down switching regulator,

a step-up switching regulator, a positive two-stage

charge pump for the TFT gate-on supply, a negative sin-

gle-stage charge pump for the TFT gate-off supply, and

two high-current operational amplifiers (op amps).

The EV kit operates from a DC supply voltage of +10.8V

to +13.2V, as configured. The step-down switching reg-

ulator is configured for a +3.3V output providing at least

2A. The step-up switching regulator is configured for a

+16V output providing at least 1.5A. The positive

charge pump is configured for a +35V output providing

at least 50mA. The negative charge pump is configured

for a -6V output providing at least 100mA. High-

frequency operation (1.2MHz) allows the use of tiny sur-

face-mount components to minimize the thickness of

LCD panel designs.

The EV kit features two high-performance operational

amplifiers (op amps) designed to drive the LCD back-

plane (VCOM). Power to the VCOM amplifiers comes

from the step-up switching regulator output.

Features

♦ +10.8V to +13.2V Input Range

♦ Output Voltages

+3.3V at 2A (Step-Down Switching Regulator)

+16V at 1.5A (Step-Up Switching Regulator)

+35V at 50mA (Positive Charge Pump)

-6V at 100mA (Negative Charge Pump)

♦ Adjustable Output Voltages (External Resistors)

♦ 1.2MHz Switching Frequency (600kHz Selectable)

♦ Two High-Speed Op Amps

♦ Low-Profile Surface-Mount Components

♦ Fully Assembled and Tested

Evaluates: MAX17014

MAX17014 Evaluation Kit

________________________________________________________________

Maxim Integrated Products

19-2900; Rev 0; 12/07

Component List

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

PART TYPE

M AX 17014E V KIT+ EV Kit

DESIGNATION QTY DESCRIPTION

C1, C2, C3 3

10µF ±20%, 16V X5R ceramic

capacitors (1206)

Murata GRM31CR61C106K

TDK C3216X5R1C106M

C4, C7, C11,

C14, C17, C21,

C22–C25

0.1µF ±10%, 50V X7R ceramic

capacitors (0603)

Murata GRM188R71H104K

TDK C1608X7R1H104K

C5 1

22µF ±10%, 6.3V X5R ceramic

capacitor (1206)

Taiyo Yuden EMK316BJ226ML

Murata GRM31CR60J226M

C6 0 Not installed, capacitor (1206)

C8, C15 2

1µF ±10%, 16V X5R ceramic

capacitors (0603)

Murata GRM188R71C105K

TDK C1608X5R1C105K

C9 1

220pF ±10%, 50V X7R ceramic

capacitor (0603)

Murata GRM188R71H221K

TDK C1608X7R1H221K

DESIGNATION QTY DESCRIPTION

C10 1

0.22µF ±10%, 10V X7R ceramic

capacitor (0603)

Taiyo Yuden LMK107BJ224KA

TDK C1608X7R1A224K

C12, C13 2

0.15µF ±10%, 16V X7R ceramic

capacitors (0603)

Taiyo Yuden EMK107BJ154KA

TDK C1608X7R1E154K

C16, C18, C19 3

10µF ±20%, 25V X5R ceramic

capacitors (1210)

Taiyo Yuden TMK325BJ106MM

TDK C3225X5R1E106M

C20 1

330pF ±10%, 50V X7R ceramic

capacitor (0603)

Murata GRM188R71H331K

TDK C1608X7R1H331K

C26 1

1µF ±10%, 50V X7R ceramic

capacitor (1206)

Murata GRM31MR71H105KA

TDK C3216X7R1H105K

Denotes lead-free and RoHS-compliant.

Summary of content (11 pages)

PAGE 1
9-2900; Rev 0; 12/07 MAX17014 Evaluation Kit The MAX17014 evaluation kit (EV kit) is a fully assembled and tested surface-mount printed-circuit board (PCB) that provides the voltages and features required for thinfilm transistor (TFT) liquid-crystal display (LCD) TV panels.
PAGE 2
Evaluates: MAX17014 MAX17014 Evaluation Kit Component List (continued) DESIGNATION QTY C27, C29, C30, C31 DESIGNATION DESCRIPTION 0 Not installed, capacitors (0603) C28 1 100pF ±5%, 50V C0G ceramic capacitor (0603) Murata GRM1885C1H101J TDK C1608C0G1H101J C32 0 Not installed, capacitor (1210) 2 30V, 3A Schottky diodes (M-flat) Toshiba CMS02 (TE12L,Q) 3 100V, 200mA dual ultra-fast diodes (SOT23) Fairchild MMBD4148SE (Top Mark: D4) Central Semiconductor CMPD1001S Lead Free (Top Mark: L21) D1
PAGE 3
MAX17014 Evaluation Kit Although the IC specifies a +8V to +16.5V input range, the EV kit is optimized for +10.8V to +13.2V input supply. Recommended Equipment Before beginning, the following equipment is needed: • +10.8V to +13.2V, 3A DC power supply • Digital multimeters (DMMs) Procedure The MAX17014 EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on the power supply until all connections are completed.
PAGE 4
Evaluates: MAX17014 MAX17014 Evaluation Kit Table 4. Jumpers JU3 and JU4 Functions SHUNT POSITION JU3 STEP-DOWN AND NEGATIVE CHARGE-PUMP REGULATOR JU4 STEP-UP AND POSITIVE CHARGE-PUMP REGULATOR Installed* Installed* Enabled Enabled Installed Not installed Enabled Disabled X Disabled Disabled Not installed *Default position. X = Don’t care. Table 5.
PAGE 5
MAX17014 Evaluation Kit The MAX17014 EV kit’s step-up switching-regulator output (AVDD) is set to +16V by feedback resistors R3 and R4. To generate output voltages other than +16V (VIN to +20V), select different external voltage-divider resistors. Refer to the Design Procedure, Step-Up Regulator section in the MAX17014 IC data sheet for instructions on selecting the feedback resistors.
PAGE 6
Figure 1. MAX17014 EV Kit Schematic _______________________________________________________________________________________ PGND -6V, 100mA VGOFF PGND C6 OPEN REF C15 1μF 16V PGND +3.3V, 2A OUT PGND +10.8V TO +13.2V VIN C31 OPEN C5 22μF 6.3V VIN R2 23.7kΩ 1% R1 150kΩ 1% R22 100kΩ EN1 JU1 C28 100pF R18 OPEN VL JU3 2 1 R L C11 0.1μF C9 220pF MODE R19 20kΩ 1% L2 2.4μH D3 VL D2 3 R23 100kΩ EN2 C12 0.15μF JU2 3 VIN C14 0.1μF C13 0.15μF REF C8 1μF C7 0.1μF C10 0.
PAGE 7
MAX17014 Evaluation Kit Evaluates: MAX17014 Figure 2.
PAGE 8
Evaluates: MAX17014 MAX17014 Evaluation Kit Figure 3.
PAGE 9
MAX17014 Evaluation Kit Evaluates: MAX17014 Figure 4.
PAGE 10
Evaluates: MAX17014 MAX17014 Evaluation Kit Figure 5.
PAGE 11
MAX17014 Evaluation Kit Evaluates: MAX17014 Figure 6. MAX17014 EV Kit PCB Layout—Solder Side Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.