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LM2621MM bảng dữ liệu(PDF) 2 Page - Texas Instruments |
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LM2621MM bảng dữ liệu(HTML) 2 Page - Texas Instruments |
2 / 17 page LM2621 SNVS033C – MAY 2004 – REVISED MARCH 2005 www.ti.com Connection Diagram Figure 1. VSSOP-8 (DGK) Package - Top View These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ABSOLUTE MAXIMUM RATINGS (1) (2) SW Pin Voltage −0.5 V to 14.5V BOOT, VDD, EN and FB Pins −0.5V to 10V FREQ Pin 100µA θJA (3) 240°C/W TJmax (3) 150°C Storage Temperature Range −65°C to +150°C Lead Temp. (Soldering, 5 sec) 260°C Power Dissipation (TA=25°C) (3) 500mW ESD Rating(4) 2kV (1) Absolute maximum ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device outside of its rated operating conditions. (2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. (3) The maximum power dissipation must be derated at elevated temperatures and is dictated by Tjmax (maximum junction temperature), θJA (junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is Pdmax = (Tjmax - TA)/ θJA or the number given in the Absolute Maximum Ratings, whichever is lower. (4) The human body model is a 100 pF capacitor discharged through a 1.5 k Ω resistor into each pin. For Pin 8 (SW) the ESD rating is 1.5 kV. OPERATING CONDITIONS (1) VDD Pin 2.5V to 5V FB, EN Pins 0 to VDD BOOT Pin 0 to 10V Ambient Temperature (TA) −40°C to +85°C (1) Absolute maximum ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device outside of its rated operating conditions. 2 Submit Documentation Feedback Copyright © 2004–2005, Texas Instruments Incorporated Product Folder Links: LM2621 |
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