lm2614btlx National Semiconductor Corporation, lm2614btlx Datasheet
lm2614btlx
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lm2614btlx Summary of contents
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... The LM2614 can be dynamically controlled for output volt- < age changes from 1.0V to 3.6V in tures external compensation to tailor the response to a wide range of operating conditions. © 2002 National Semiconductor Corporation Key Specifications n Operates from a single LiION cell (2.8V to 5.5V) n Adjustable output voltage (1.0V to 3.6V) ± feedback voltage precision ...
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Typical Application Circuits FIGURE 1. Typical Circuit for Powering RF Power Amplifiers www.national.com FIGURE 2. Typical Circuit for 2.5V Output Voltage FIGURE 3. Typical Circuit for 1.5V Output Voltage 2 20036701 20036702 20036703 ...
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... Package Type LM2614ATL LM2614BTL 10-bump Wafer Level Chip Scale (micro SMD) LM2614ATLX LM2614BTLX (*) XY - denotes the date code marking (2 digit) in production (*) TT - refers to die run/lot traceability for production (*) S - product line designator Package markings may change over the course of production. Pin Description Pin Number ...
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Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. PVIN, VDD to SGND PGND to SGND, PVIN to VDD EN, EAOUT, EANEG, SYNC/MODE to SGND FB, SW Electrical ...
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Typical Performance Characteristics LM2614ATL, Circuit of Figure 3.6V Quiescent Supply Current vs Supply Voltage Output Voltage vs Supply Voltage (V = 1.0V, PWM MODE) OUT Output Voltage vs Output Current (V = 1.0V, PWM MODE) ...
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Typical Performance Characteristics LM2614ATL, Circuit of Figure Output Voltage vs Output Current (V = 3.6V, PWM MODE) OUT Switching Frequency vs Temperature (Circuit in Figure 3, PWM MODE) Efficiency vs Output Current (V = 1.0V, PWM MODE) ...
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Typical Performance Characteristics LM2614ATL, Circuit of Figure 3.6V Efficiency vs Output Current (V = 1.5V, PWM MODE) OUT Efficiency vs Output Current (V = 3.6V, PWM MODE) OUT = 25˚C, unless otherwise noted. (Continued) A ...
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Typical Performance Characteristics LM2614ATL, Circuit of Figure Device Information The LM2614 is a simple, step-down DC-DC converter opti- mized for powering RF power amplifiers (PAs) in mobile phones, portable communicators, and similar battery pow- ered RF devices. ...
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Device Information (Continued) CIRCUIT OPERATION Referring to Figure 4, Figure 5, Figure 6 and Figure 7, the LM2614 operates as follows. During the first part of each switching cycle, the control block in the LM2614 turns on the internal PFET ...
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Device Information (Continued) PWM OPERATION While in PWM (Pulse Width Modulation) mode, the output voltage is regulated by switching at a constant frequency and then modulating the energy per cycle to control power to the load. Energy per cycle is ...
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Device Information (Continued) extending battery life when the load low-power standby mode. In PFM mode, quiescent current into the V pin is 160µA typ. In contrast, PWM mode V current is 600µA typ. PWM operation is intended ...
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Device Information (Continued) VCON Transient Response (Circuit in Figure 4) FIGURE 8. VCON Transient Response in Dropout (Circuit in Figure 4) FIGURE 9. www.national.com Load Transient Response (Circuit in Figure 3) 20036719 Line Transient Response (Circuit in Figure 3) 20036720 ...
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Application Information SETTING THE OUTPUT VOLTAGE The LM2614 can be used with external feedback resistors and an analog signal to vary the output voltage. Select an output voltage from 1.0V to 3.6V by setting the voltage on the VCON as ...
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Application Information CAPACITOR SELECTION Use a 4.7µF or 10µF ceramic input capacitor. A 10µF ce- ramic input capacitor is recommended if the PA represents a < load 14Ω. Use a 4.7µF ceramic output capacitor for getting faster slew rates for ...
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Application Information 3. Arrange the components so that the switching current loops curl in the same direction. During the first half of each cycle, current flows from the input filter capacitor, through the LM2614 and inductor to the output filter ...
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... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...