LM2716MTX/NOPB National Semiconductor, LM2716MTX/NOPB Datasheet
LM2716MTX/NOPB
Specifications of LM2716MTX/NOPB
Related parts for LM2716MTX/NOPB
LM2716MTX/NOPB Summary of contents
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... Each converter may also be shut down indepen- dently with its own shutdown pin. The LM2716 is available in a low profile 24-lead TSSOP package. Typical Application Circuit © 2005 National Semiconductor Corporation Features n Fixed 3.3V buck converter with a 1.8A, 0.16Ω, internal switch n Adjustable boost converter with a 3.6A, 0.12Ω ...
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Connection Diagram Ordering Information Order Number LM2716MT LM2716MTX www.national.com Top View 20071204 24-Lead TSSOP Package Type NSC Package Drawing TSSOP-24 MTC24 TSSOP-24 MTC24 2 Supplied As 61 Units, Rail 2500 Units, Tape and Reel ...
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Pin Descriptions Pin Name 1 PGND Power ground. AGND and PGND pins must be connected together directly at the part. 2 FB1 Buck output voltage feedback input Buck compensation network connection. Connected to the output of the voltage ...
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Block Diagram www.national.com 4 20071203 ...
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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 SW1 Voltage SW2 Voltage FB1 Voltage FB2 Voltage V Voltage C1 0.965V ≤ Voltage C2 SHDN1 Voltage SHDN2 Voltage SS1 Voltage SS2 Voltage FSLCT Voltage ...
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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 Symbol Parameter Th Buck SHDN Threshold SHDN1 Th Boost SHDN Threshold SHDN2 I Buck Soft Start Pin Current ...
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Typical Performance Characteristics Switching Frequency vs. R Switching Frequency vs. Input Voltage (F = 600kHz) SW Buck Efficiency vs. Load Current (F = 600kHz) SW Switching Frequency vs. Input Voltage Resistor F 20071223 Buck Efficiency vs. Load Current 20071225 Boost ...
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Typical Performance Characteristics Boost Efficiency vs. Load Current (F = 600kHz) SW www.national.com (Continued) Boost Switch R 20071232 8 vs. Input Voltage DSON 20071235 ...
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Buck Operation PROTECTION (BOTH REGULATORS) The LM2716 has dedicated protection circuitry running dur- ing normal operation to protect the IC. The Thermal Shut- down circuitry turns off the power devices when the die temperature reaches excessive levels. The UVP comparator ...
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Buck Operation (Continued) COMPENSATION COMPONENTS In the control to output transfer function, the first pole F can be estimated as 1/(2πR C OUT OUT the output capacitor is 1/(2πESRC OUT frequency pole F in the range of 45kHz to 150kHz: ...
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Boost Operation FIGURE 1. Simplified Boost Converter Diagram (a) First Cycle of Operation (b) Second Cycle Of Operation CONTINUOUS CONDUCTION MODE The LM2716 contains a current-mode, PWM boost regulator. A boost regulator steps the input voltage higher ...
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Boost Operation (Continued) The LM2716 has a current mode PWM boost converter. The signal flow of this control scheme has two feedback loops, one that senses switch current and one that senses output voltage. To keep a current programmed control ...
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Boost Operation (Continued) Resistance, denoted R ) capacitors be used such as ESR ceramic, polymer electrolytic, or low ESR tantalum. Higher ESR capacitors may be used but will require more compen- sation which will be explained later on in the ...
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Boost Operation (Continued 0.072F (in V/s) SW where R is the minimum load resistance mum input voltage the error amplifier transconduc- m tance found in the Electrical Characteristics table, and R is the value ...
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Application Information (Continued) FIGURE 3. 15V, 3.3V Output Application 15 20071257 www.national.com ...
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Application Information www.national.com (Continued) FIGURE 4. PCB Layout, Top 16 20071258 ...
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Application Information (Continued) FIGURE 5. PCB Layout, Bottom 17 20071259 www.national.com ...
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