EL7562 Elantec Semiconductor, EL7562 Datasheet
EL7562
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EL7562 Summary of contents
Page 1
... With proper external components, the whole converter fits 2 into a less than 0.5 in area. The minimal external components and small size make this EL7562C ideal for desktop and portable applications. The EL7562C is specified for operation over the -40°C to +85°C tem- perature range. Typical Application Diagram 1 SGND PGND ...
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... EL7562C - Preliminary Monolithic 2 Amp DC:DC Step-down Regulator Absolute Maximum Ratings Supply Voltage between and GND Voltage LX Input Voltage V Voltage HI Important Note: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the ...
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... Voltage feedback input. Connected to an external resistor divider between VOUT and GND. A 125nA pull-up current forces VOUT the event that FB is floating. 15 VREF Bandgap reference bypass capacitor. Typically 0.1µF to GND. 16 PGND Ground return of the regulator. EL7562C - Preliminary Monolithic 2 Amp DC:DC Step-down Regulator Pin Function 3 ...
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... EL7562C - Preliminary Monolithic 2 Amp DC:DC Step-down Regulator Typical Performance Curves Efficiency =5V IN 100 V =2. =1. =1. =500kHz 65 S L=Coilcraft DO3316P-472 60 0.1 1 Load Current I (A) O Efficiency =3.3V O 100 V =4. = =5. 0.5 1 ...
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... Temperature (°C) Switching Frequency vs C OSC 1400 1200 1000 800 600 400 200 0 0 200 400 600 C (pF) OSC EL7562C - Preliminary Monolithic 2 Amp DC:DC Step-down Regulator Input Current vs Temperature (Enable connected to GND) 0.96 0.94 0.92 0.9 0.88 0.86 0.84 0.82 0.8 110 160 -40 800 1000 5 V =5. = ...
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... EL7562C - Preliminary Monolithic 2 Amp DC:DC Step-down Regulator Block Diagram Junction Temperature Controlle r Supply 39 VDD 0.1µF EN SGND FB 0.1µF 270pF VREF COSC Voltage VDRV Oscillator Reference VHI VIN Power FET PWM Drivers Controller Power FET PGND Current Sense 6 0.1µF 4.7µH V OUT 2370 100µF ...
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... Applications Information Circuit Description General The EL7562C is a fixed frequency, current mode con- trolled DC:DC converter with integrated N-channel power MOSFETs and a high precision reference. The device incorporates all the active circuitry required to implement a cost effective, user-programmable 2A syn- chronous step-down regulator suitable for use in DSP core power supplies ...
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... FET, via the VHI pin. A value of 0.1µF for CVHI is recommended. Reference A 1.5% temperature compensated bandgap reference is integrated in the EL7562C. The external VREF capaci- tor acts as the dominant pole of the amplifier and can be increased in size to maximize transient noise rejection. A value of 0.1µF is recommended. Oscillator ...
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... PGND pins. Maximizing the copper area around these pins is preferable. In addition, a solid ground plane is always helpful for the EMI performance. The demo board is a good example of layout based on these principles. Please refer to the EL7562C Applica- tion Brief for the layout ...
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... EL7562C - Preliminary Monolithic 2 Amp DC:DC Step-down Regulator General Disclaimer Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the cir- cuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement ...