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LM2651 bảng dữ liệu(PDF) 3 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  1.5A High Efficiency Synchronous Switching Regulator
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LM2651 bảng dữ liệu(HTML) 3 Page - Texas Instruments

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LM2651
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SNVS032C – MAY 2004 – REVISED APRIL 2005
Absolute Maximum Ratings
(1)
Input Voltage
15V
Feedback Pin Voltage
−0.4V ≤ VFB ≤ 5V
Power Dissipation (TA =25°C),
(2)
893 mW
Junction Temperature Range
−40°C ≤ TJ ≤ +125°C
Storage Temperature Range
−65°C to +150°C
ESD Susceptibility
Human Body Model (3)
1kV
(1)
Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which
the device is intended to be functional, but device parameter specifications may not be guaranteed under these conditions. For
guaranteed specifications and test conditions, see the Electrical Characteristics.
(2)
The maximum allowable power dissipation is calculated by using PDmax = (TJmax − TA)/θJA , where TJmax is the maximum junction
temperature, TA is the ambient temperature, and θJA is the junction-to-ambient thermal resistance of the specified package. The 893
mW rating results from using 150°C, 25°C, and 140°C/W for TJmax, TA, and θJA respectively. A θJA of 140°C/W represents the worst-
case condition of no heat sinking of the 16-pin TSSOP package. Heat sinking allows the safe dissipation of more power. The Absolute
Maximum power dissipation must be derated by 7.14mW per °C above 25°C ambient. The LM2651 actively limits its junction
temperature to about 165°C.
(3)
The human body model is a 100pF capacitor discharged through a 1.5k
Ω resistor into each pin.
Operating Ratings
(1)
Supply Voltage
4V
≤ VIN ≤ 14V
(1)
Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which
the device is intended to be functional, but device parameter specifications may not be guaranteed under these conditions. For
guaranteed specifications and test conditions, see the Electrical Characteristics.
Copyright © 2004–2005, Texas Instruments Incorporated
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