CDLL6320

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	6.8V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	3 Ohms
Current - Reverse Leakage @ Vr:	2µA @ 4V
Voltage - Forward (Vf) (Max) @ If:	1.1V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	DO-213AB, MELF
Supplier Device Package:	DO-213AB

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<p>The CDLL6320 is a single-chip, low-voltage Zener diode that offers a wide range of application possibilities in most off-line power supplies, particularly non-isolated step-down DC-DC converters. When used in such an application, the CDLL6320 can provide superior reliability and superior power-dissipation capabilities.</p><p>The CDLL6320 features a power-dissipation rating up to 8W, allowing it to support systems with a wide range of input voltages and currents. Its low-operating-voltage threshold further ensures system reliability, even under fluctuating input voltages. The device has a reverse breakdown rating of at least +20V, which helps protect power-supply components against damage due to reversed input voltages.</p><p>The CDLL6320 also provides an excellent thermal-management solution, keeping the temperature of the integrated circuit (IC) within specified limits. A maximum junction temperature of +175°C and a thermal resistance of 2–3°C/W ensure that the device will not become overheated in the typical application environment.</p><p>The CDLL6320 is designed to meet the needs of the rapidly growing off-line power supply market. It is available in a variety of packages and can handle a range of operating temperature requirements. The device features a built-in turn-on/turn-off delay time for improved reliability, and its ESD performance is also excellent.</p><p>The working principle of the CDLL6320 is relatively straightforward. When the voltage across the device exceeds the rated breakdown voltage, a current will flow through the device. This current is limited by the Zener’s resistance. The resistance of the Zener determines the reverse-leakage current, which is the current flowing in the opposite direction when the voltage across the device is less than the breakdown voltage.</p><p>The CDLL6320 can be used in a wide range of applications, including off-line DC-DC converters, isolated DC-DC converters, line-operated power supplies, and SMPS. The device provides superior power-dissipation capabilities, excellent ESD protection, superior reliability, and superior thermal-management capabilities. Its low-operating-voltage threshold and wide range of input requirements make it an ideal choice for most off-line power-supply applications.</p>

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