lm2710mtx-adj National Semiconductor Corporation, lm2710mtx-adj Datasheet
lm2710mtx-adj
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lm2710mtx-adj Summary of contents
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... The LM2710 contains a Vcom buffer and 4 Gamma buffers capable of supplying 50mA source and sink. The TSSOP-20 package ensures a low profile overall solu- tion. Typical Application Circuit © 2004 National Semiconductor Corporation Features n 1.4A, 0.17Ω, internal power switch n V operating range: 2. 600kHz/1 ...
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Connection Diagram Pin Description Pin Name SHDN 4 FSLCT 5 Vs+ 6 Vcom-in 7 GMA1-in 8 GMA2-in 9 GMA3-in 10 GMA4-in 11 GMA4-out 12 GMA3-out 13 GMA2-out 14 GMA1-out 15 Vcom-out 16 SS ...
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... GMA4-out(Pin 11): Gamma Buffer output pin. Ordering Information Order Number Package Type LM2710MT-ADJ LM2710MTX-ADJ GMA3-out(Pin 12): Gamma Buffer output pin. GMA2-out(Pin13): Gamma Buffer output pin. GMA1-out(Pin 14): Gamma Buffer output pin. Vcom-out(Pin 15): Vcom Buffer output pin. SS(Pin 16): Softstart pin. Connect capacitor to SS pin and AGND to slowly ramp inductor current on startup ...
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Block Diagrams www.national.com 20043403 20043451 4 ...
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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 Voltage SW FB Voltage V Voltage C SHDN Voltage FSLCT Voltage Supply Voltage, Vs+ Buffer Input ...
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Electrical Characteristics Specifications in standard type face are for T ture Range ( T = −40˚C to +125˚C). Unless otherwise specified BUFFERS Symbol Parameter V Input offset voltage OS ∆V /∆T Offset Voltage Drift os I Input Bias ...
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Typical Performance Characteristics Efficiency vs. Load Current ( 600 kHz) OUT S Efficiency vs. Load Current (V = 10V 1.25 MHz) OUT S Switch Current Limit vs. V Efficiency vs. Load Current (V 20043426 ...
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Typical Performance Characteristics I vs (600 kHz, not switching (1.25 MHz, not switching (In shutdown) www.national.com (Continued) 20043421 (1.25 MHz, switching) 20043421 20043418 8 I vs. V ...
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Typical Performance Characteristics Frequency vs (1.25 MHz) C Pin Current vs Load Transient Response 600kHz OUT IN 1) Load, 80mA to 260mA to 80mA 500mA/div, ...
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Typical Performance Characteristics Internal Soft Start 27Ω none 600kHz OUT IN LOAD SS 1) SHDN, 1V/div 500mA/div 5V/div, DC ...
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Typical Performance Characteristics Output Voltage vs. Output Current (sinking) Supply Current vs. Common Mode Voltage Large Signal Step Response (no ext. compensation) (Continued) Output Voltage vs. Output Current 20043464 Large Signal Step Response (50Ω, 1nF ext. compensation) 20043466 Positive Slew ...
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Typical Performance Characteristics Negative Slew Rate vs. Capacitive Load Unity Gain Frequency vs. Capacitive Load PSRR vs. Frequency www.national.com (Continued) Phase Margin vs. Capacitive Load 20043470 CMRR vs. Frequency 20043472 20043474 12 20043471 20043473 ...
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Operation FIGURE 1. Simplified Boost Converter Diagram (a) First Cycle of Operation (b) Second Cycle Of Operation CONTINUOUS CONDUCTION MODE The LM2710 is a current-mode, PWM boost regulator. A boost regulator steps the input voltage higher output ...
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Operation (Continued 8V 2.5V 27Ω, C OUT 1.25MHz. Trace: 1) SHDN, 1V/div, DC Coupled 0.5A/div, DC Coupled 5V/div, DC Coupled OUT T ...
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Operation (Continued) 4.7nF. Refer to the Applications Information section for rec- ommended values for specific circuits and conditions. Refer to the Compensation section for other design requirement. COMPENSATION FOR BOOST DC/DC This section will present a general design procedure to ...
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Operation (Continued) RIGHT HALF PLANE ZERO A current mode control boost regulator has an inherent right half plane zero (RHP zero). This zero has the effect of a zero in the gain plot, causing an imposed +20dB/decade on the rolloff, ...
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Operation (Continued) performance of the buffers. If the capacitance presented by the load is less than 5nF external components will be re- quired as the load itself will not ensure stability. No external compensation in this case will lead to ...
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Application Information www.national.com FIGURE 5. 600kHz, 8V Application FIGURE 6. 1.25MHz, 5V Application 18 20043459 20043484 ...
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Application Information (Continued) FIGURE 7. 1.25MHz, 10V Application FIGURE 8. 1.25MHz, 12V Application 19 20043485 20043486 www.national.com ...
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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 ...