MAX8821EVKIT+【PDF 1/14 页】KIT EVAL FOR MAX8821

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录1228

[1页]2页 3页 4页 5页

19-4085; Rev 0; 4/08

MAX8821 Evaluation Kit

General Description

The MAX8821 evaluation kit (EV kit) is a fully assembled

and tested circuit for evaluating the MAX8821 white

LED charge pump with a mono Class D audio amplifier

and dual LDOs. The MAX8821 EV kit operates from a

2.7V to 5.5V input supply range and is controlled by an

I 2 C interface. The MAX8821 features a high-efficiency,

adaptive-mode inverting charge pump that drives up to

six LEDs with constant current for uniform brightness.

The EV kit also includes Windows ? 2000/XP/Vista ?

-compatible software that provides a simple graphical

user interface (GUI) for exercising the features of the

MAX8821. The EV kit software features an I 2 C interface

to control the LED current, ramp-up/ramp-down time,

and blink on/off-time. An internal temperature derating

function reduces the current above +40°C to protect

the LEDs.

The MAX8821 also features a mono Class D audio

amplifier with adjustable gain, through the I 2 C interface,

from -3dB to +24dB in ten 3dB steps. The I 2 C control

interface selects the audio amplifier fixed-frequency

mode or spread-spectrum mode, in addition to select-

ing individual LDO output voltages.

Features

? Windows 2000/XP/Vista (32-Bit)-Compatible

Software

? CMAXQBUSB+ Interface Board with USB PC

Connection (Cable Included)

? Proven PCB Layout

? Fully Assembled and Tested

? White LED Inverting Charge Pump

Independent Adaptive Current Regulators for

Each LED

Six Low-Dropout Current Regulators

Flexible I 2 C Dimming Control for Each LED

Ramp Up/Down Current Control for Each LED

Low 70μA (typ) Quiescent Current

T A Derating Function Protects LEDs

? Mono 2W Class D Loudspeaker Amplifier

85% Efficiency (R L = 8 Ω , P OUT = 600mW)

Low 0.05% THD+N at 1kHz

High 65dB PSRR at 1kHz

Fully Differential Inputs

-3dB to +24dB Gain Settings in 3dB Steps

Integrated Click-and-Pop Suppression

Low Quiescent Current

? Dual Low-Noise LDO

45μV RMS Output Noise, 73dB PSRR

Flexible I 2 C-Controlled Output Voltages

200mA and 300mA Output Current Drive

Ordering Information

PART

MAX8821EVKIT+

TYPE

EV Kit

+Denotes lead-free and RoHS compliant.

Component List

DESIGNATION

QTY

DESCRIPTION

DESIGNATION

QTY

DESCRIPTION

1μF ±10%, 6.3V X5R ceramic

33,000pF ±10%, 10V X7R ceramic

C1, C2, C3, C6,

C8, C9, C11

capacitors (0402)

TDK C1005X5R0J105K

Murata GRM155R60J105K

C13, C15

capacitors (0402)

Murata GRM155R71A333K

Taiyo Yuden EMK105B7333K

Taiyo Yuden LMK105BJ105K

0.1μF ±10%, 10V X5R ceramic

KEMET C0402C333K8RACTU

68,000pF ±10%, 10V X5R ceramic

C4, C12

capacitors (0402)

TDK C1005X5R1C104K

C14, C16

capacitors (0402)

TDK C1005X5R1C683K

Murata GRM155R61A104K

Taiyo Yuden LMK105BJ104K

Murata GRM155R61A683K

0.15μF ±10%, 6.3V X7R ceramic

C5, C7, C10

2.2μF ±20%, 6.3V X5R ceramic

capacitors (0402)

C17

capacitor (0402)

TDK C1005X5R0J154K

Taiyo Yuden JMK105BJ225M

Windows and Windows Vista are registered trademarks of Microsoft Corp.

AVX 04026D154KAT2A

________________________________________________________________ Maxim Integrated Products

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.

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

采购需求

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

我的联系方式