MAX8821集成電路（IC）的LED驅(qū)動器規(guī)格書PDF中文資料
| 廠商型號 |
MAX8821 |
| 參數(shù)屬性 | MAX8821 封裝/外殼為28-WFQFN 裸露焊盤；包裝為卷帶（TR）；類別為集成電路（IC）的LED驅(qū)動器；MAX8821應(yīng)用范圍：背光；產(chǎn)品描述：IC LED DRVR RGLTR I2C 28TQFN |
| 功能描述 | White LED Charge Pump with Mono Class D Audio Amp and Dual LDO |
| 封裝外殼 | 28-WFQFN 裸露焊盤 |
| 文件大小 |
902.7 Kbytes |
| 頁面數(shù)量 |
29 頁 |
| 生產(chǎn)廠商 | MAXIM |
| 中文名稱 | 美信 |
| 網(wǎng)址 | |
| 數(shù)據(jù)手冊 | |
| 更新時間 | 2026-1-20 23:00:00 |
| 人工找貨 | MAX8821價格和庫存，歡迎聯(lián)系客服免費人工找貨 |
MAX8821規(guī)格書詳情
General Description
The MAX8821 integrates a charge pump for white LEDs, an audio loudspeaker amplifier, and two low noise LDOs controlled by an I2C control interface. The high-efficiency, adaptive-mode inverting charge pump drives up to six LEDs with constant current for uniform brightness. The LED current is controlled by an I2C interface and adjusts from 0.1mA to 25.6mA per LED into 32 pseudo-logarithmic steps. Independent voltages for each LED maximize efficiency even with large LED forward voltage (VF) mismatch. An internal temperature derating function reduces the current above +40°C to protect the LEDs.
特性 Features
? White LED Inverting Charge Pump
??? Independent Adaptive Current Regulators for Each LED
??? 6 Low-Dropout Current Regulators
??? Flexible I2C Dimming Control for Each LED
??? Ramp-Up/Down, Current Control for Each LED
??? Low 70μA (typ) Quiescent Current
??? TA Derating Function Protects LEDs
? Mono 2W Class D Loudspeaker Amplifier
??? 85 Efficiency (RL = 8Ω, POUT = 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
??? 45μVRMS Output Noise, 70dB PSRR
??? Flexible I2C-Controlled Output Voltages
??? 200mA and 300mA Output Current Drive
Applications
??? Cell Phones and Smartphones
??? PDAs, Digital Cameras, Camcorders
??? MP3 Players, GPS Devices
產(chǎn)品屬性
- 產(chǎn)品編號：
MAX8821ETI+T
- 制造商：
Analog Devices Inc./Maxim Integrated
- 類別：
集成電路（IC） > LED 驅(qū)動器
- 包裝：
卷帶（TR）
- 類型：
DC DC 穩(wěn)壓器
- 拓?fù)洌?/span>
開關(guān)電容器（充電泵）
- 內(nèi)部開關(guān)：
是
- 輸出數(shù)：
6 + 2LDOs
- 電壓 - 供電（最低）：
2.7V
- 電壓 -?供電（最高）：
5.5V
- 電流 - 輸出/通道：
25.6mA
- 頻率：
1MHz
- 調(diào)光：
I2C
- 應(yīng)用：
背光
- 工作溫度：
-40°C ~ 85°C（TA）
- 安裝類型：
表面貼裝型
- 封裝/外殼：
28-WFQFN 裸露焊盤
- 供應(yīng)商器件封裝：
28-TQFN（4x4）
- 描述：
IC LED DRVR RGLTR I2C 28TQFN
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
|---|---|---|---|---|---|---|---|
ADI(亞德諾) |
25+ |
N/A |
20948 |
樣件支持,可原廠排單訂貨! |
詢價 | ||
ADI(亞德諾) |
25+ |
N/A |
21000 |
正規(guī)渠道,免費送樣。支持賬期,BOM一站式配齊 |
詢價 | ||
Maxim |
20+ |
na |
65790 |
原裝優(yōu)勢主營型號-可開原型號增稅票 |
詢價 | ||
ADI |
25+ |
EVALUATION BOARDS,16-LFCSP-3X3 |
5500 |
超高效負(fù)壓電荷泵LED驅(qū)動器,帶有雙LDO,3mm x 3mm薄型QFN封裝 |
詢價 | ||
MAXIM/美信 |
25+ |
QFN28 |
15 |
全新原裝正品支持含稅 |
詢價 | ||
MAXIM/美信 |
24+ |
SSOPQFN |
25050 |
原廠支持公司優(yōu)勢現(xiàn)貨 |
詢價 | ||
Maxim |
22+ |
28TQFN |
9000 |
原廠渠道,現(xiàn)貨配單 |
詢價 | ||
MAXIM |
2023+ |
QFN |
50000 |
原裝現(xiàn)貨 |
詢價 | ||
MAXIM/美信 |
23+ |
QFN28 |
13000 |
原廠授權(quán)一級代理,專業(yè)海外優(yōu)勢訂貨,價格優(yōu)勢、品種 |
詢價 | ||
MAXIM/美信 |
2407+ |
QFN16 |
7750 |
原裝現(xiàn)貨!實單直說!特價! |
詢價 |
