CS51021A ONSEMI [ON Semiconductor], CS51021A Datasheet
CS51021A
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CS51021A Summary of contents
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... V reference. The CS51021A and CS51023A feature bidirectional synchronization capability, while the CS51022A and CS51024A offer a sleep mode with 100 mA maximum IC current consumption ...
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... CS51021A, CS51022A, CS51023A, CS51024A PGND 22 mF SYNC/SLEEP 11 V FZT688 0.01 mF 4700 REF COMP SYNC/ SLEEP C SS 330 pF LGND 0. Figure 1. Typical Application Diagram, 36− 5.0 V, 5.0 A DC−DC Converter MAXIMUM RATINGS* ...
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... CS51021A, CS51022A, CS51023A, CS51024A ELECTRICAL CHARACTERISTICS (Unless otherwise stated, specifications apply for −40°C < T 3.0 V < V < 8.2 V < V < Characteristic Under Voltage Lockout START Threshold (CS51021A/2A) START Threshold (CS51023A/4A) STOP Threshold Hysteresis (CS51021A/2A) Hysteresis (CS51023A/4A Startup (CS51021A/2A) ...
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... CS51021A, CS51022A, CS51023A, CS51024A ELECTRICAL CHARACTERISTICS 3.0 V < V < 8.2 V < V < Characteristic Oscillator Accuracy R T Voltage Stability Delta Frequency 8.2 V < V Temperature Stability T MIN Min Charge & Discharge Time (Note 3) Duty Cycle Accuracy R T Peak Voltage (Note 3) Valley Voltage ...
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... CS51021A, CS51022A, CS51023A, CS51024A ELECTRICAL CHARACTERISTICS (Unless otherwise stated, specifications apply for −40°C < T 3.0 V < V < 8.2 V < V < Characteristic Current Sense OFFSET Voltage (Note 4) Blanking Time Blanking Disable Voltage Adjust V Second Current Threshold Gain I Input Resistance ...
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... CS51021A, CS51022A, CS51023A, CS51024A _OK + CC Start Stop − + LGND − SLEEP 4.3 V SYNC Clamp − COMP + + 2.5 V − E/A V − FB − V REF V FB Monitor + − 2.0 V SLOPE 0.1 Σ I SENSE 0 SET V REF 12 − 2.5 V − 5.0 V REF V REF + + 4.75 V 200 ns − OSC − ...
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... CC portion of the IC. The internal logic monitors the supply voltage During abnormal operating conditions, the CC output is held low. The CS51021A/2A/3A/4A requires only startup current. Voltage Feedback The output voltage is monitored via the V compared with the internal 2.5 V reference. The error amplifier output minus one diode drop is divided by 3 and connected to the negative input of the PWM comparator ...
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... CS51021A, CS51022A, CS51023A, CS51024A Slope Compensation DC−DC converters with current mode control require a current sense signal with slope compensation to avoid instability at duty cycles greater than 50%. Slope capacitor is charged by an internal 53 mA current source and discharged during the oscillator discharge time. The slope ...
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... CS51021A, CS51022A, CS51023A, CS51024A Synchronization A bi−directional synchronization is provided to synchronize several controllers. When SYNC pins are connected together, the converters will lock to the highest switching frequency. The fastest controller becomes the master, producing a 4.3 V, 200 ns pulse train. Only one, the highest frequency SYNC signal, will appear on the SYNC line ...
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... CS51021A, CS51022A, CS51023A, CS51024A −A− −B− −T− SEATING PLANE 0.25 (0.010 PACKAGE THERMAL DATA Parameter R qJC R qJA PACKAGE DIMENSIONS SOIC−16 D SUFFIX CASE 751B−05 ISSUE 0.25 (0.010 ...
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... CS51021A, CS51022A, CS51023A, CS51024A K 16X 0.15 (0.006 L PIN 1 IDENT. 1 0.15 (0.006 −V− É É Ç Ç Ç J1 É É Ç Ç Ç Ç Ç Ç SECTION N− 0.10 (0.004) −T− SEATING PLANE D ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...