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参数资料
| 型号： | ADP1653ACPZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/24页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR PHOTO FLASH 16-LFCSP |
| 标准包装： | 1 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 闪灯/白光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1.2MHz |
| 电源电压： | 3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 16-LFCSP-VQ |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 125°C |
| 产品目录页面： | 792 (CN2011-ZH PDF) |
| 其它名称： | ADP1653ACPZ-R7DKR |
ADP1653
PCB LAYOUT
Good PCB layout is important to maximize efficiency and to
minimize noise and electromagnetic interference (EMI). An
example PCB layout is shown in Figure 34. Refer to the
following guidelines for adjustments to the suggested layout.
The high current paths are shown in Figure 35. Place components
that are on high current paths first. To minimize large current
loops, place the input capacitor, inductor, Schottky diode, and
output capacitor as close as possible to each other and to the
ADP1653 using wide tracks (use shapes where possible).
Use separate analog and power ground planes. The analog ground
plane is used to ground the SETI, SETT, and SETF resistors and
for any digital connections (that is, INTF = 0 = AGND).
Use the power ground plane to ground the power components.
Connect the input capacitor, output capacitor, and the PGND pin
(Pin 12) to the PGND plane. If it is not possible to make the PGND
plane continuous, use a number of low inductance vias to connect
V IN
the planes. Connect the AGND and PGND planes at the paddle
or close to the paddle of the ADP1653.
The SETI, SETT, and SETF resistors set a small reference current
that generates the LED current. To minimize noise and current
error, connect the SETI, SETT, and SETF resistors as close as
possible to the ADP1653. Connect the other end of the resistors
directly to the AGND plane.
Connect the output capacitor to the high power LED(s), using
a wide, low resistance trace. Connect the bottom of the LED string
back to the HPLED pin (Pin 9) with a wide trace. The GND pin
(Pin 8) is connected to the source of the current regulator NFET.
Ensure that there is a low impedance back to the battery for the
high power LED current by connecting the GND pin to the PGND
plane with a low impedance via(s) close to the GND pin.
The OUT pin is used for soft start and contains a comparator
for overvoltage protection. Connect the output capacitor back
to the OUT pin (Pin 7) with a direct trace. The trace does not
need to be wide.
GND
INPUT CAPACITOR
PGND PLANE
INDUCTOR
C1
AGND PLANE
L1
SCHOTTKY DIODE
HIGH POWER
LED
D1
D3
OUTPUT CAPACITOR
C2
SETT RESISTOR
R6
INDICATOR LED
SETF RESISTOR
R5
R4
Tx MASK RESISTOR
SETI RESISTOR
ADP1653
PGND
SEE
NOTE 1
D4
HIGH POWER
LED
D2
R7
PGND
NOTES
1. CONNECT THE AGND AND PGND PLANES CLOSE TO PADDLE. THIS IS THE GND RETURN PATH FOR HPLED CURRENT,
SO A REASONABLY LARGE VIA SHOULD BE USED TO CONNECT THE AGND AND PGND PLANES.
Figure 34. Example Layout of ADP1653 Driving Two White LEDs, Pink = GND Layer, Gray/Green = Top Layer (a One-LED Layout Is Similar)
Rev. B | Page 20 of 24
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相关代理商/技术参数 |
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| ADP1653ACPZ-R71 | 制造商:AD 制造商全称:Analog Devices 功能描述:Compact, High Efficiency, High Power Flash/Torch LED Driver with Dual Interface |
| ADP1653-EVALZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Compact, High Efficiency, High Power Flash/Torch LED Driver with Dual Interface |
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| ADP16550001ACBZR | 制造商:Analog Devices 功能描述: |
| ADP1655ACBZ-R7 | 功能描述:IC LED DRVR BKLGT FLASH 12-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 |
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