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PDF SIC9701 Data sheet ( Hoja de datos )
| Número de pieza | SIC9701 | |
| Descripción | High Precision Non-Isolated Buck APFC LED Driver | |
| Fabricantes | SI Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SIC9701 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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深圳深爱半导体股份有限公司
产品规格书
Shenzhen SI Semiconductors Co., LTD.
Product Specification
High Precision Non-Isolated Buck APFC LED Driver
SIC9701
General Description
The SIC9701 is a constant current LED regulator with high current accuracy which applies to
single stage step-down power factor corrected LED drivers.
High accuracy of output current is achieved by sampling the output current directly.Working in
critical conduction mode operation reduces the switching losses and largely increases the
efficiency.
The SIC9701 is supplied from the output directly, and auxiliary winding is not needed.
The SIC9701 has multi-protection functions which largely enhance the safety and reliability of the
system, including VDD over-voltage protection, VDD UVLO, short-circuit protection, LED open
protection, cycle-by-cycle current limit and over-temperature protection.
The SIC9701 available in Compact SOT23-6 package.
Features
·No auxiliary winding
·High current accuracy of line and load regulation
·High power factor with low output current-ripple
·Critical conduction mode
·High efficiency over wide operating range
·Cycle-by-cycle current limit
·LED short protection
·LED open protection
·Over-temperature protection
Typical Application
Si semiconductors
- 1 - SIC9701_EN_Rev2.0
1 page  
深圳深爱半导体股份有限公司
产品规格书
Shenzhen SI Semiconductors Co., LTD.
Product Specification
High Precision Non-Isolated Buck APFC LED Driver
SIC9701
Functional Block Diagram
Applications Information
FUNCTIONAL Description：
The SIC9701 is a constant current LED controller which applies to non-isolation step-down LED system with
power factor correction. SIC9701 can achieve excellent line and load regulation, high efficiency and low BOM
cost.
Start Up
When the pull-up resistor charges VDD up to 21V, the gate drive signal begins to switch, and the output begins
to provide power to the VDD pin when the output is enough. An internal voltage clamp is attached to the VIN pin
to prevent VDD from being too high. An internal 10mA current pulls the VDD down and stop switching when it
is above 43V and restart switching when VDD is pulled down to 35V. When VDD is lower than 7.7V, it stops
Si semiconductors
- 5 - SIC9701_EN_Rev2.0
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SIC9701.PDF ] | |
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