CS5150 ON Semiconductor, CS5150 Datasheet
CS5150
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CS5150 Summary of contents
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... Soft Start CC capability. The CS5150 is upward compatible with the 5−bit CS5155H, allowing the mother board designer the capability of using either the CS5150 or the CS5155 with no change in layout. The CS5150 is available in 16 pin surface mount. Features • Dual N−Channel Design • ...
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... V V ID1 ID1 V V ID2 ID2 V V ID3 ID3 C CS5150 OFF 330 pF SS 0.1 μF COMP 0.33 μF LGND Figure 1. Application Diagram, Switching Power Supply for Core Logic − Pentium ABSOLUTE MAXIMUM RATINGS* Operating Junction Temperature Lead Temperature Soldering: Storage Temperature Range, T ...
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ELECTRICAL CHARACTERISTICS DAC Code ID2 ID1 ID0 ID3 Characteristic Error Amplifier V Bias Current Open Loop Gain 1.25 V < V Unity Gain Bandwidth Note 3 COMP ...
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ELECTRICAL CHARACTERISTICS (continued) 5.0 V < V < DAC Code CC2 ID2 ID1 otherwise specified.) Characteristic V and V GATE(H) GATE(L) Out SOURCE Sat at 100 mA Out SINK Sat at 100 mA Out Rise ...
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PACKAGE PIN # SO−16, DIP−16 PIN SYMBOL PACKAGE PIN DESCRIPTION −V Voltage ID DAC input pins. These pins are internally pulled ID0 ID3 ...
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V Monitor CC1 Comparator − V CC1 + 3.90 V 3.85V SS V ID0 Error Amplifier V ID1 4 BIT DAC + V ID2 − PWM Comparator V ID3 Slow Feedback V FB COMP Fast Feedback V FFB LGND 1.0 ...
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... 100 mV steps, depending on the digital input code. If all four bits are left open, the CS5150 enters adjust mode. In adjust mode, the designer can choose any output voltage by using resistor divider feedback to the V controllers ...
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... V ) (5.0 V/div.) CC1 CC2 Trace 4− 5.0 V Input (1.0 V/div.) Figure 4. CS5150 Demonstration Board Startup in Response to Increasing 12 V and 5.0 V Input Voltages. Extended Off Time is Followed by Normal Off Time Operation when Output Voltage Achieves Regulation to the Error Amplifier Output. M 2.50 ms Trace 1− ...
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... Trace 1− Regulator Output Voltage (1.0 V/div.) Trace 2− Inductor Switching Node (5.0 V/div.) Trace 3− Output Current (0 Amps) (20 V/div.) Figure 10. CS5150 Demonstration Board Response Load Turn On (Output Set for 2.8 V). Upon Completing a Normal Off Time, The V Immediately Connects the Inductor to the Input Voltage, Providing 100% Duty Cycle ...
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... Trace 4− 5.0 V Supply Voltage (2.0 V/div.) Trace 3− Soft Start Timing Capacitor (1.0 V/div.) Trace 2− Inductor Switching Node (2.0 V/div.) Figure 12. CS5150 Demonstration Board Hiccup Mode Short Circuit Protection. Gate Pulses are Delivered While the Soft Start Capacitor Charges, and Cease ...
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... V Power Good + This circuit provides an open collector output that drives the Power Good output to ground for regulator voltages less than V . Power Good OUT CS5150 Figure 17. Implementing Power Good with the CS5150 http://onsemi.com 11 MMUN2111T1 (SOT−23 CS5150 8 V FFB (R1 ) R2) 0. ...
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... Figure 18. CS5150 Demonstration Board During Power Up. Power Good Signal is Activated when Output Voltage Reaches 1.70 V. Selecting External Components The CS5150 can be used with a wide range of external power components to optimize the cost and performance of a particular design. The following information can be used as general guidelines to assist in their selection. ...
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... A Schottky diode may be placed in parallel with the synchronous MOSFET to conduct the inductor current upon turn off of the switching MOSFET to improve efficiency. The CS5150 reference circuit does not use this device due to its excellent design. Instead, the body diode of the synchronous MOSFET is utilized to reduce cost and conducts the inductor current. For a design operating at 200 kHz or so, the low non− ...
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V Figure 21. Input Filter Layout Guidelines 1. Place 12 V filter capacitor next to the IC and connect capacitor ground to pin 11 (PGND). 2. Connect pin 11 (PGND) with a separate ...
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... ID2 V ID3 CS5150 C OFF 330 pF SS 0.1 μF 0.1 μF COMP LGND 0.33 μF Figure 24. Additional Application Diagram, 3 2.5 V/7.0 A Converter with 12 V Bias 1.0 μF Si4410DY V CC2 V GATE(H) CS5150 V GATE(L) PGND FFB LGND 100 pF Si9410 V GATE( Si9410 V GATE(L) PGND 3 ...
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... ID3 C OFF 330 pF SS 0.1 μF COMP 0.33 μF Figure 25. Additional Application Diagram, 5 3.3 V/10 A Converter with Current Sharing 1.0 μF Si4410 V CC2 V GATE( CS5150 V GATE(L) PGND 3 FFB LGND 100 pF http://onsemi.com 16 + 100 μF/10 V × 3 Tantalum Remote Sense 3.0 μH 3.3 V/10 A 100 μ ...
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G K −T− SEATING PLANE 0.25 (0.010 −A− 0.25 (0.010) PACKAGE THERMAL DATA Parameter R ΘJC R ...
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... N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5773−3850 http://onsemi.com 18 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative CS5150/D ...