LM2651MTCX-1.8 NSC [National Semiconductor], LM2651MTCX-1.8 Datasheet
LM2651MTCX-1.8
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LM2651MTCX-1.8 Summary of contents
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LM2651 1.5A High Efficiency Synchronous Switching Regulator General Description The LM2651 switching regulator provides high efficiency power conversion over a 100:1 load range (1.5A to 15mA). This feature makes the LM2651 battery-powered applications that demand long battery life in both ...
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... PGND www.national.com 16-Lead TSSOP (MTC) DS100925-2 Part Number Supplied as 2.5k Units, Tape and Reel LM2651MTCX-1.8 LM2651MTCX-2.5 LM2651MTCX-3.3 LM2651MTCX-ADJ Switched-node connection, which is connected with the source of the internal high-side MOSFET. Main power supply pin. Bootstrap capacitor connection for high-side gate drive. Input supply voltage for control and driver circuits. ...
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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. Input Voltage Feedback Pin Voltage = 25˚C), Power Dissipation (T A (Note 2) Junction Temperature Range Electrical Characteristics type ...
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LM2651-3.3 System Parameters Symbol Parameter V Sleep Mode Output Voltage HYST Hysteresis LM2651-ADJ System Parameters = 2.5V unless otherwise specified) (V OUT Symbol Parameter V Feedback Voltage FB V Output Voltage Line OUT Regulation V Output Voltage Load OUT Regulation ...
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All Output Voltage Versions Specifications in standard type face are for T = 10V unless otherwise specified. perature range Symbol Parameter I Error Amplifier Source EA_SOURCE Current I Error Amplifier Sink Current EA_SINK V Error Amplifier Output Swing ...
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Typical Performance Characteristics Efficiency vs Load Current = 12V 5V OUT DS100925- Junction Temperature QSD DS100925 Junction Temperature DS(ON) DS100925-10 www.national.com I vs Input Voltage Q DS100925-5 Frequency vs Junction Temperature DS100925-8 ...
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Typical Performance Characteristics Current Limit vs Junction = 3.3V) Temperature (V OUT DS100925-13 Block Diagram Operation The LM2651 operates in a constant frequency (300 kHz), current-mode PWM for moderate to heavy loads; and it auto- matically switches to hysteretic mode ...
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Operation (Continued) time), the low-side switch is turned on. At the end of the switching cycle, the low-side switch is turned off; and the same cycle repeats. The current of the top switch is sensed by a patented internal circuitry. ...
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Design Procedure (Continued) Select resistors between 10k and 100k . (1% or higher ac- curacy metal film resistors for R and R 1 COMPENSATION COMPONENTS In the control to output transfer function, the first pole F be estimated as 1/(2 ...
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Physical Dimensions LIFE SUPPORT POLICY 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. ...