ADP8863
THEORY OF OPERATION
The ADP8863 combines a powerful LED charge pump driver
with independent control of up to seven LEDs. These LED
drivers can sink up to 30 mA (typical) on six channels. The
seventh LED can also be driven to 60 mA (typical). All LEDs
can be individually programmed or combined into a group to
operate backlight LEDs. A full set of safety features, including
short-circuit, overvoltage, and overtemperature protection with
input-to-output isolation, allows for a robust and safe design.
The integrated soft start limits inrush currents at startup, restart
attempts, and gain transitions.
V ALS
OPTIONAL
PHOTOSENSOR
D1
D2
D3
D4
D5
D6
D7
CMP_IN
GAIN
ID1
ID2
ID3
ID4
ID5
ID6
ID7
SELECT
LOGIC
PHOTOSENSOR
CONVERSION
I SS
V IN
VIN
CHARGE
SOFT START
VBAT
VDDIO
C IN
VIN
UVLO
STNDBY
VIN
EN
V REFS
I REFS
PUMP
LOGIC
VOUT
C OUT
CLK
NOISE FILTER
C1+
nRST
50μs
RESET
STANDBY
LIGHT
SENSOR
LOGIC
CHARGE
PUMP
(1×, 1.5×, 2×)
C1–
C2+
C1
1μF
SCL
I 2 C
C2–
C2
1μF
SDA
LOGIC
SWITCH CONTROL
CURRENT SINK CONTROL
nINT
GND1
GND2
Figure 26. Detailed Block Diagram
Rev. A | Page 11 of 52
相关PDF资料
ADUM1100UR IC DIGITAL ISOL/COUPLER 8SOIC
ADUM1201CR IC ISOLATOR DIGITAL DUAL 8SOIC
ADUM1210BRZ IC ISOLATOR DIGITAL DUAL 8SOIC
ADUM1233BRWZ-RL IC ISOLATR DGTL 2CH 0.1A 16-SOIC
ADUM1234BRWZ-RL IC ISOLATR DGTL 2CH 0.1A 16-SOIC
ADUM1250SRZ-RL7 IC ISOLATOR 1MBPS 4CH 2.5K 8SOIC
ADUM1286CRZ ISOLATOR DGTL 3KVRMS 2CH 8-SOIC
ADUM1300BRW IC DIGITAL ISOLATOR 3CH 16-SOIC
相关代理商/技术参数
ADP8863DBCP-EVALZ 制造商:AD 制造商全称:Analog Devices 功能描述:Charge Pump,7-Channel Fun Lighting LED Driver
ADP8866 制造商:AD 制造商全称:Analog Devices 功能描述:Charge Pump Driven 9-Channel LED Driver with Automated LED Lighting Effects
ADP8866ACPZ-R7 功能描述:IC LED DVR WHIT BCKLGT 20LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性(LDO),PWM,升压(升压) 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB,白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C
ADP8866CP-EVALZ 功能描述:BOARD DAUGHTER ADP8866 LFCSP RoHS:是 类别:编程器,开发系统 >> 评估板 - LED 驱动器 系列:- 标准包装:1 系列:PowerWise® 电流 - 输出 / 通道:20mA 输出及类型:1,非隔离 输出电压:17V 特点:可调光 输入电压:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相关产品:LM3508TLX-ND - IC LED DRVR WHT BCKLGT 9USMDLM3508TLDKR-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLCT-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLTR-ND - IC LED DRVR WHT BCKLGT 9MICROSMD
ADP886XMB1-EVALZ 制造商:AD 制造商全称:Analog Devices 功能描述:Charge Pump, 7-Channel Smart LED Driver with I2C Interface
ADP8870 制造商:AD 制造商全称:Analog Devices 功能描述:Charge-Pump, Parallel Backlight Driver with Image Content PWM Input
ADP8870ACBZ-R7 功能描述:IC LED DRVR WHIT BCKLGT 20-WLCSP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极,PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND
ADP8870ACPZ-R7 功能描述:IC LED DVR WHITE BACKLT 20LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极,PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND