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| 型号： | LT3571IUD#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.57 A SWITCHING REGULATOR, 2300 kHz SWITCHING FREQ-MAX, PQCC16 |
| 封装： | 3 X 3 MM, 0.50 MM PITCH, LEAD FREE, PLASTIC, MO-220WEED-2, QFN-16 |
| 文件页数： | 1/16页 |
| 文件大小： | 215K |
| 代理商： | LT3571IUD#TRPBF |
LT3571
1
3571fa
TYPICAL APPLICATION
DESCRIPTION
75V DC/DC Converter
for APD Bias
The LT3571 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
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.
45V Low Noise APD Bias Power Supply
FEATURES
APPLICATIONS
n High APD Voltage: Up to 70V
n Integrated Schottky Diode
n 75V, 370mA Internal Switch
n High Side Fixed Voltage Drop APD Current Monitor
n Adjustable Frequency: 250kHz to 2MHz
n Frequency Synchronization
n Wide VIN Range: 2.7V to 20V
n Constant-Voltage and Constant-Current Regulation
n Programmable Current Limit Protection
n Surface Mount Components
n Low Shutdown Current <1μA
n Internal Soft-Start
n Internal Compensation
n CTRL Pin Allows Output Adjustment with
No Polarity Inversion
n 3mm
× 3mm 16-Lead QFN Package
n APD Bias
n PIN Diode Bias
n Optical Receivers and Modules
n Fiber Optic Network Equipment
APD Bias Ripple
1μF
MONIN
VREF
RT
SHDN
CTRL
GND
SYNC
VOUT
FB
VIN
SW
LT3571
MON
APD
OFF ON
VIN
5V
20.5k
49.9Ω
45V
12.1k
1MHz
3571 TA01a
0.1μF
10k
10nF
50V
0.1μF
10μH
1M
20Ω
10nF
IAPD = 1mA
500ns/DIV
3571 TA01b
500μV/DIV
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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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