参数资料
| 型号： | LT3571IUD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.47A 16QFN |
| 产品培训模块： | APD Biasing |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 最高 75V |
| 输入电压： | 2.7 V ~ 20 V |
| PWM 型： | 电流/电压模式 |
| 频率 - 开关： | 250kHz ~ 2MHz |
| 电流 - 输出： | 470mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-QFN-EP（3x3） |
LT3571
75V DC/DC Converter
for APD Bias
FEATURES
DESCRIPTION
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High APD Voltage: Up to 70V
Integrated Schottky Diode
75V, 370mA Internal Switch
High Side Fixed Voltage Drop APD Current Monitor
Adjustable Frequency: 250kHz to 2MHz
Frequency Synchronization
Wide V IN Range: 2.7V to 20V
Constant-Voltage and Constant-Current Regulation
Programmable Current Limit Protection
Surface Mount Components
Low Shutdown Current <1μA
Internal Soft-Start
Internal Compensation
CTRL Pin Allows Output Adjustment with
No Polarity Inversion
3mm × 3mm 16-Lead QFN Package
The LT ? 3571 is a current mode step-up DC/DC converter
designed to bias avalanche photodiodes (APDs) in optical
receivers with an output voltage up to 75V. The LT3571
features a high side ?xed voltage drop APD current moni-
tor with better than 10% relative accuracy over the entire
temperature range. The integrated power switch, Schottky
diode and APD current monitor allow a small solution
footprint and low solution cost. It combines a traditional
voltage loop and a unique current loop to operate as
a constant-current source or constant-voltage source.
The inductor-based topology ensures an input free from
switching noise. The integrated high side current monitor
produces a current proportional to the APD current with
better than 10% relative accuracy over four decades of
dynamic range in the input range of 250nA to 2.5mA. This
current can be used as a reference to provide a digitally
APD Bias
PIN Diode Bias
APPLICATIONS
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programmed output voltage via the CTRL pin. The LT3571
is available in the tiny footprint (3mm × 3mm) 16-lead
QFN package.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
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Optical Receivers and Modules
Fiber Optic Network Equipment
TYPICAL APPLICATION
45V Low Noise APD Bias Power Supply
APD Bias Ripple
V IN
5V
V IN
10μH
SW
OFF ON
1μF
SHDN
V REF
V OUT
20Ω
CTRL
R T
LT3571
MONIN
50V
10nF
1M
500μV/DIV
SYNC
FB
GND MON
APD
20.5k
I APD = 1mA
500ns/DIV
3571 TA01b
12.1k
1MHz
10nF
10k
49.9Ω
45V
0.1μF
0.1μF
3571 TA01a
3571fa
1
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相关代理商/技术参数 |
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| LT3572 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Full-Bridge Piezo Driver with 900mA Boost Converter |
| LT3572EUF#PBF | 功能描述:IC DRIVER PIEZO DUAL 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:步进电机驱动器，1-2 相，2 相 评估套件:- 输出数:1 电流 - 输出:800mA 电压 - 负载:10 V ~ 28 V 电源电压:4.75 V ~ 5.25 V 工作温度:-20°C ~ 90°C 安装类型:表面贴装 封装/外壳:28-SOP + 2 翼片裸露焊盘 供应商设备封装:28-HSOPHC（15.2x7.9） 包装:剪切带 (CT) 其它名称:869-1268-1 |
| LT3572EUF#TRPBF | 功能描述:IC DRIVER PIEZO DL 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 产品变化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 标准包装:1 系列:- 应用:DC 电机控制器，无刷（BLDC），3 相 评估套件:可供 输出数:1 电流 - 输出:100mA 电压 - 负载:5.25 V ~ 20 V 电源电压:5.25 V ~ 20 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-VQFN（7x7） 包装:剪切带 (CT) 其它名称:ATA6833-PLQWCT |
| LT3572EUF-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Full-Bridge Piezo Driver with 900mA Boost Converter |
| LT3572EUF-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Full-Bridge Piezo Driver with 900mA Boost Converter |
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