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MAX8821EVKIT

Evaluation Kit for the MAX8821

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

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 I²C 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 I²C 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 I²C interface, from -3dB to +24dB in ten 3dB steps. The I²C control interface selects the audio amplifier fixed-frequency mode or spread-spectrum mode, in addition to selecting individual LDO output voltages.

Data Sheet

Download	Rev 0	(PDF, 232kB)
E-Mail

NOTE: This product uses the following:
MAX8821 EVKIT Software

Key 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 I²C 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 = 8Ω, 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 I²C-Controlled Output Voltages
- 200mA and 300mA Output Current Drive

Applications/Uses

Cell Phones and Smartphones
MP3 Players, GPS Devices
PDAs, Digital Cameras, Camcorders

Product Guides

Audio (PDF)

Automotive (PDF)

Communications (PDF)

Displays (PDF)

Software/Models

MAX8821 EVKIT Software

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX8821EVKIT+			Active	KIT; Land Pattern: Not Available		See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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White LED Charge Pump with Mono Class D Audio Amp and Dual LDO

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-4085 Rev 0; 2008-06-18
This page last modified: 2011-10-27