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LMZ14202EXT Arkusz danych(PDF) 3 Page - Texas Instruments |
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LMZ14202EXT Arkusz danych(HTML) 3 Page - Texas Instruments |
3 / 32 page Exposed Pad Connect to GND 5 SS 6 FB 3 EN 1 VIN 2 RON 4 GND 7 VOUT LMZ14202EXT www.ti.com SNVS665H – JUNE 2010 – REVISED OCTOBER 2015 5 Pin Configuration and Functions NDW Package 7-Pin TO-PMOD Top View Pin Functions PIN TYPE DESCRIPTION NAME NO. Enable — Input to the precision enable comparator. Rising threshold is 1.18 V nominal; 90 mV EN 3 Analog hysteresis nominal. Maximum recommended input level is 6.5 V. Exposed Pad — Internally connected to pin 4. Used to dissipate heat from the package during EP — Ground operation. Must be electrically connected to pin 4 external to the package. Feedback — Internally connected to the regulation, overvoltage, and short-circuit comparators. FB 6 Analog The regulation reference point is 0.8 V at this input pin. Connected the feedback resistor divider between the output and ground to set the output voltage. GND 4 Ground Ground — Reference point for all stated voltages. Must be externally connected to EP. ON-Time Resistor — An external resistor from VIN to this pin sets the ON-time of the application. RON 2 Analog Typical values range from 25 k Ω to 124 kΩ. Soft-Start — An internal 8-µA current source charges an external capacitor to produce the soft- SS 5 Analog start function. This node is discharged at 200 µA during disable, overcurrent, thermal shutdown and internal UVLO conditions. Supply input — Nominal operating range is 6 V to 42 V. A small amount of internal capacitance VIN 1 Power is contained within the package assembly. Additional external input capacitance is required between this pin and exposed pad. Output Voltage — Output from the internal inductor. Connect the output capacitor between this VOUT 7 Power pin and exposed pad. 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) (2) MIN MAX UNIT VIN, RON to GND –0.3 43.5 V EN, FB, SS to GND –0.3 7 V Junction temperature 150 °C Peak reflow case temperature (30 sec) 245 °C Storage temperature –65 150 °C (1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. (2) For soldering specifications, refer to Absolute Maximum Ratings for Soldering SNOA549. 6.2 ESD Ratings VALUE UNIT V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)(2) ±2000 V (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. (2) The human body model is a 100-pF capacitor discharged through a 1.5-k Ω resistor into each pin. Test method is per JESD-22-114. Copyright © 2010–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LMZ14202EXT |
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