lm2612atlx National Semiconductor Corporation, lm2612atlx Datasheet

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... Only three small external surface-mount components, an inductor and two ceramic capacitors are required. Typical Application Circuit © 2002 National Semiconductor Corporation Key Specifications n Operates from a single LiION cell (2.8V to 5.5V) n Internal synchronous rectification for high PWM mode efficiency n Pin programmable output voltage (1 ...

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... Order Number Package Type 10-Pin micro SMD LM2612ATL TLP106WA LM2612BTL 10-bump Wafer Level Chip Scale LM2612ATLX (micro SMD) LM2612BTLX (*) XY - denotes the date code marking (2 digit) in production TT - refers to die run/lot traceability for production I - pin one indication S - Product line designator Note the Package Marking may change over the course of production time without notice ...

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Pin Description (Continued) Pin Number Pin Name C3 SW Switching Node connection to the internal PFET switch and NFET synchronous rectifier. B3 PVIN Power Supply Input to the internal PFET switch. Connect to the input filter capacitor (Figure 1). A3 ...

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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 EN, SYNC/MODE, VID0, VID1 to SGND FB, SW Storage Temperature Range Electrical ...

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Electrical Characteristics Specifications with standard typeface are for T perature Range ( −25˚C to +85˚C). Unless otherwise specified, PVIN = VDD = EN = SYNC = 3.6V, VID0 = VID1 = A J 0V. Symbol Parameter f ...

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Typical Operating Characteristics 10 µH, unless otherwise noted. Quiescent Supply Current vs Temperature Shutdown Quiescent Current vs Temperature Output Voltage vs Temperature (PFM Mode) www.national.com LM2612ABL/ATL, Circuit of Figure 1, V Quiescent Supply Current vs Supply Voltage 20041806 Output Voltage ...

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Typical Operating Characteristics 10 µH, unless otherwise noted. (Continued) Output Voltage vs Supply Voltage (V = 1.5V, PFM Mode) OUT Output Voltage vs Output Current (V = 1.5V, PFM Mode) OUT Efficiency vs Output Current (V = 1.8V, PFM Mode, ...

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Typical Operating Characteristics 10 µH, unless otherwise noted. (Continued) Efficiency vs Output Current (V = 1.5V, PFM Mode, With Diode) OUT Efficiency vs Output Current (V = 1.3V, PFM Mode, With Diode) OUT Efficiency vs Output Current (V = 1.05V, ...

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Typical Operating Characteristics 10 µH, unless otherwise noted. (Continued) Efficiency vs Output Current (V = 1.8V, PFM Mode, No Diode) OUT Load Transient Response (PWM Mode) A: INDUCTOR CURRENT, 500mA/div B: SW PIN, 5V/div 50mV/div, AC COUPLED ...

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Typical Operating Characteristics 10 µH, unless otherwise noted. (Continued) PWM to PFM Response A: INDUCTOR CURRENT, 500mA/div B: SW PIN, 2V/div 50mV/div, AC COUPLED OUT D: SYNC/MODE, 5V/div www.national.com LM2612ABL/ATL, Circuit of Figure 1, V Line Transient ...

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Device Information The LM2612 is a simple, step-down DC-DC converter opti- mized for powering low-voltage CPUs or DSPs in cell phones and other miniature battery powered devices. It pro- vides pin-selectable output voltages of 1.05V, 1.3V, 1.5V or 1.8V from ...

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Circuit Operation (Continued) PWM Operation The LM2612 can be set to current-mode PWM operation by connecting the SYNC/MODE pin to VDD. While in PWM (Pulse Width Modulation) mode, the output voltage is regu- lated by switching at a constant frequency ...

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PWM Operation (Continued) PWM Mode Switching Waveform A: INDUCTOR CURRENT, 500mA/div B: SW PIN, 2V/div 10mV/div, AC COUPLED OUT FIGURE 3. Typical Circuit Waveforms in (a) PWM Mode and (b) PFM Mode PFM Operation Connecting the SYNC/MODE ...

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Frequency Synchronization (SYNC/MODE Pin) (Continued) sharp edged signals from a pulse or function generator can develop under/overshoot as high as 10V at the end of an improperly terminated cable. Overvoltage Protection The LM2612 has an over-voltage comparator that prevents the ...

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Application Information SETTING THE OUTPUT VOLTAGE The LM2612 features pin-selectable output voltage to elimi- nate the need for external feedback resistors. Select an output voltage of 1.05V, 1.3V, 1.5V or 1.8V by configuring the VID0 and VID1 pins, as directed ...

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Application Information TABLE 3. Suggested Capacitors and Their Suppliers Model 22µF, X7R or X5R Ceramic Capacitor for C2 (Output Filter Capacitor) C3225X5RIA226M JMK325BJ226MM ECJ4YB0J226M GRM42-2X5R226K6.3 10µF, 6.3V, X7R or X5R Ceramic Capacitor for C1 (Input Filter Capacitor) C2012X5R0J106M JMK212BJ106MG ECJ3YB0J106K ...

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Application Information 1. Place the LM2612 on 10.82mil pads for micro SMD package thermal relief, connect to each pad with a 6mil wide trace (micro SMD), 6mils long or longer, then incrementally increase each trace to its optimal ...

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Physical Dimensions NS Package Number BLP106WB (LM2612ABL/BBL package) www.national.com inches (millimeters) unless otherwise noted 10-Bump micro SMD Package The dimensions for X1, X2 and X3 are as given 2.250+/− 0.030mm X2 = 2.504 +/− 0.030mm X3 = 0.945 ...

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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 ...