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LM4953 Folha de dados(PDF) 3 Page - Texas Instruments |
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LM4953 Folha de dados(HTML) 3 Page - Texas Instruments |
3 / 19 page LM4953, LM4953SDBD www.ti.com SNAS299E – SEPTEMBER 2005 – REVISED FEBRUARY 2006 PIN DESCRIPTIONS Pin Name Function 1 SD Active Low Shutdown 2 CPVDD Charge Pump Power Supply 3 CCP+ Positive Terminal - Charge Pump Flying Capacitor 4 PGND Power Ground 5 CCP- Negative Terminal - Charge Pump Flying Capacitor 6 VCP_OUT Charge Pump Output 7 NC No Connect 8 AVSS Negative Power Supply - Amplifier 9 OUT B Output B 10 AVDD Positive Power Supply - Amplifier 11 OUT A Output A 12 NC No Connect 13 VIN Signal Input 14 SGND Signal Ground 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) (3) Supply Voltage (VDD) 4.5V Storage Temperature −65°C to +150°C Input Voltage -0.3V to VDD + 0.3V Power Dissipation(4) Internally Limited ESD Susceptibility(5)(6) 2000V ESD Susceptibility(7)(6) 200V Junction Temperature 150°C Thermal Resistance See AN-1187(SNOA401) 'Leadless Leadframe Packaging (LLP).' (1) All voltages are measured with respect to the GND pin unless otherwise specified. (2) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions that ensure specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensured for parameters where no limit is given; however, the typical value is a good indication of device performance. (3) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and specifications. (4) The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature, TA. The maximum allowable power dissipation is PDMAX = (TJMAX – TA)/θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4xxx typical application (shown in Figure 1) with VDD = yyV, RL = 2μF+30Ω mono BTL operation the total power dissipation is xxxW. θJA = 40°C/W. (5) Human body model, 100pF discharged through a 1.5k Ω resistor. (6) If the product is in shutdown mode and VDD exceeds 3.6V (to a max of 4V VDD), then most of the excess current will flow through the ESD protection circuits. If the source impedance limits the current to a max of 10mA, then the part will be protected. If the part is enabled when VDD is above 4V, circuit performance will be curtailed or the part may be permanently damaged. (7) Machine Model, 220pF-240pF discharged through all pins. Operating Ratings Temperature Range TMIN ≤ TA ≤ TMAX −40°C ≤ TA ≤ 85°C Supply Voltage (VDD) 1.6V ≤ VDD ≤ 4.2V Copyright © 2005–2006, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM4953 LM4953SDBD |
Nº de peça semelhante - LM4953_14 |
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Descrição semelhante - LM4953_14 |
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