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| 型号： | ADP8863ACPZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/52页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHIT BCKLGT 20-WLCSP |
| 标准包装： | 1 |
| 拓扑： | 切换式电容器（充电泵） |
| 输出数： | 7 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，LED 闪烁器 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 800kHz ~ 1.32MHz |
| 电源电压： | 2.5 V ~ 5.5 V |
| 输出电压： | 4.3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-UFBGA，WLCSP |
| 供应商设备封装： | 20-WLCSP |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 其它名称： | ADP8863ACPZ-R7DKR |
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Charge Pump, 7-Channel
Fun Lighting LED Driver
ADP8863
FEATURES
Automated blinking and funlight timing for each LED driver
16 programmable fade in and fade out times
TYPICAL OPERATING CIRCUIT
V ALS
PHOTO
SENSOR
0.1 sec to 5.5 sec
D1
D2
D3
D4
D5
D6
D7 CMP_IN
Selectable linear, square, or cubic fade rates
7 independent and programmable LED drivers
7 drivers capable of 30 mA (maximum)
1 driver also capable of 60 mA (maximum)
VIN
C IN
1μF
VDDIO
0.1μF
VOUT
C OUT
1μF
Programmable maximum current limit (128 levels)
Separate and independent controls for backlight LEDs
Backlight fade override
Up to two built-in comparator inputs with programmable
modes for ambient light sensing
Charge pump with automatic gain selection of 1×, 1.5×, and
nRST
nINT
SDA
SCL
ADP8863
C1+
C1–
C2+
C2–
C1
1μF
C2
1μF
2× for maximum efficiency
Standby mode for <1 μA current consumption
I 2 C-compatible interface for all programming
Dedicated reset pin and built-in power-on reset (POR)
Short-circuit, overvoltage, and overtemperature protection
Internal soft start to limit inrush currents
Input-to-output isolation during faults or shutdown
Operation down to V IN = 2.5 V with undervoltage lockout
(UVLO) at V IN = 2.0 V
Available in a small 20-ball, 2.15 mm × 2.36 mm × 0.6 mm
WLCSP or a 20-lead, 4 mm × 4 mm × 0.75 mm LFCSP
APPLICATIONS
LED indication
Funlight indicator lighting
Keypad backlighting
RGB LED color generation and mixing
General backlighting of small format displays
GENERAL DESCRIPTION
GND1
Figure 1.
GND2
The ADP8863 combines a powerful charge pump driver with
advanced autonomous LED lighting features. It allows as
many as seven LEDs to be independently driven up to 30 mA
(maximum). The seventh LED can also be driven to 60 mA
(maximum). All LEDs are programmable for maximum current
and fade in/fade out times via the I 2 C interface.
Additionally, automated blinking routines can be independently
programmed and enabled for all seven LED channels. These
LEDs can also be combined into groups to reduce the processor
instructions.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
This entire configuration is driven by a two-capacitor charge pump
with gains of 1×, 1.5×, and 2×. The charge pump is capable of
driving a maximum I OUT of 240 mA from a supply of 2.5 V to
5.5 V. The device includes a variety of safety features including
short-circuit, overvoltage, and overtemperature protection.
These features allow easy implementation of a safe and robust
design. Additionally, input inrush currents are limited via an
integrated soft start combined with controlled input-to-output
isolation.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ?2010 Analog Devices, Inc. All rights reserved.
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