LM2622MM-ADJ National Semiconductor, LM2622MM-ADJ Datasheet

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... ESR ceramic capacitors at the output. The LM2622 is available in a low profile 8-lead MSOP package. Typical Application Circuit © 2004 National Semiconductor Corporation Features n 1.6A, 0.2Ω, internal switch n Operating voltage as low as 2.0V n 600kHz/1 ...

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... Connection Diagram Ordering Information Order Number Package Type LM2622MM-ADJ MSOP-8 LM2622MMX-ADJ MSOP-8 Pin Description Pin Name SHDN 4 GND FSLCT 8 NC www.national.com Top View 8-Lead Plastic MSOP NS Package Number MUA08A NSC Package Drawing MUA08A 1000 Units, Tape and Reel MUA08A 3500 Units, Tape and Reel Compensation network connection ...

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Block Diagram 3 10127303 www.national.com ...

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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 FB Voltage V Voltage C SHDN Voltage FSLCT Maximum Junction Temperature Power Dissipation(Note 2) Lead Temperature Electrical Characteristics Specifications in standard type face are for T ture Range ( T = − ...

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Electrical Characteristics Note 4: All limits guaranteed at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are 100% production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control ...

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Typical Performance Characteristics R vs. V DSON ( (600 kHz, switching (1.3 MHz, switching) www.national.com (Continued) IN 10127327 10127329 10127319 (600 ...

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Typical Performance Characteristics Frequency vs (600 kHz) Load Transient Response (600 kHz operation) Test circuit is shown in Figure 4. (Continued) 10127323 Load Transient Response 10127316 Test circuit is shown in Figure 5 7 Frequency vs ...

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Operation (a) First Cycle of Operation (b) Second Cycle Of Operation CONTINUOUS CONDUCTION MODE The LM2622 is a current-mode, PWM boost regulator. A boost regulator steps the input voltage higher output voltage. In continuous conduction mode (when ...

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Operation (Continued) The LM2622 is 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 converter ...

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Operation (Continued) very little load changes, and at lower current outputs, the input capacitor size can often be reduced. The size can also be reduced if the input of the regulator is very close to the source output. The size ...

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Operation (Continued) gin can also be improved by adding the section. The equation for A DC additional equations required for the calculation 0.072fs (in V/s) where R is the minimum load resistance mum ...

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Application Information FIGURE 3. Triple Output TFT Bias (600 kHz operation) TRIPLE OUTPUT TFT BIAS The circuit in Figure 3 shows how the LM2622 can be configured to provide outputs of 8V, −8V, and 23V, conve- nient for biasing TFT ...

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Application Information referenced to ground. In the third stage, the 16V at C5 appears across C6 when the switch is closed. When the switch opens referenced to the 8V output minus a diode drop, which raises the voltage ...

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Application Information POWER DISSIPATION The output power of the LM2622 is limited by its maximum power dissipation. The maximum power dissipation is deter- mined by the formula )/θ D jmax A where T is the ...

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Application Information (Continued) 10127314 15 10127315 www.national.com ...

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