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LM2674M-3.3 数据表(PDF) 3 Page - Texas Instruments |
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LM2674M-3.3 数据表(HTML) 3 Page - Texas Instruments |
3 / 32 page LM2674 www.ti.com SNVS007F – SEPTEMBER 1998 – REVISED APRIL 2013 Absolute Maximum Ratings (1) (2) Supply Voltage 45V ON/OFF Pin Voltage −0.1V ≤ VSH ≤ 6V Switch Voltage to Ground −1V Boost Pin Voltage VSW + 8V Feedback Pin Voltage −0.3V ≤ VFB ≤ 14V ESD Susceptibility Human Body Model(3) 2 kV Power Dissipation Internally Limited Storage Temperature Range −65°C to +150°C Vapor Phase (60s) +215°C D Package Infrared (15s) +220°C Lead Temperature P Package (Soldering, 10s) +260°C WSON Package (See AN-1187) Maximum Junction Temperature +150°C (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 ensured under these conditions. For ensured specifications and test conditions, see the Electrical Characteristics. (2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and specifications. (3) The human body model is a 100 pF capacitor discharged through a 1.5 k Ω resistor into each pin. Operating Ratings Supply Voltage 6.5V to 40V Junction Temperature Range −40°C ≤ TJ ≤ +125°C Electrical Characteristics LM2674-3.3 Specifications with standard type face are for TJ = 25°C, and those with bold type face apply over full Operating Temperature Range. Symbol Parameter Conditions Typical(1) Min(2) Max(2) Units SYSTEM PARAMETERS Test Circuit Figure 22(3) VOUT Output Voltage VIN = 8V to 40V, ILOAD = 20 mA to 500 mA 3.3 3.251/3.201 3.350/3.399 V VOUT Output Voltage VIN = 6.5V to 40V, ILOAD = 20 mA to 250 mA 3.3 3.251/3.201 3.350/3.399 V η Efficiency VIN = 12V, ILOAD = 500 mA 86 % (1) Typical numbers are at 25°C and represent the most likely norm. (2) All limits ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (3) External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect switching regulator performance. When the LM2674 is used as shown in Figure 22 andFigure 23 test circuits, system performance will be as specified by the system parameters section of the Electrical Characteristics. Copyright © 1998–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM2674 |
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类似说明 - LM2674M-3.3 |
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