MC33470 ON Semiconductor, MC33470 Datasheet
MC33470
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MC33470 Summary of contents
Page 1
... Synchronous Rectification DC/DC Converter Programmable Integrated Controller The MC33470 is a digitally programmable switching voltage regulator, specifically designed for Microprocessor supply, Voltage Regulator Module and general purpose applications, to provide a high power regulated output voltage using a minimum of external parts. A 5−bit digital−to−analog converter defines the dc output voltage. ...
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... Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. ESD data available upon request MC33470 OT 11 Over ...
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... Under a typical soft current limit, the net soft−start discharge current will current ratio is designed to be 9:1. 7. Sense (Pin 6) = 5.0 V, Comp (Pin 10) open, VID4, VID2, VID1, VID0 = 1.0, VID3 = 0. MC33470 ( for typical values T ...
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... Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 10. VID1, VID3, VID4 = logic 0, and VID0, VID2 = logic 1. 11. OUTEN is internally pulled low if VID0 and 4 are floating. 12. Due to internal pullup resistors, there will be an additional 0.5 mA per pin if any of the VID0 pins are pulled low. MC33470 ( ...
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... Figure 2. Output Drive Waveform transient = 0 Figure 14 Circuit 2.5 mS/DIV Figure 4. Error Amplifier Transient Response transient = 0 Figure 14 Circuit 2.5 mS/DIV Figure 6. Feedback Circuit Load Transient Response MC33470 8 25°C 7.0 A 6.0 5 4.0 3.0 2.0 1 1.0 2.0 3.0 INPUT VOLTAGE (V) Figure 3. 5.0 V Supply Current 0 − ...
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... T , AMBIENT TEMPERATURE (°C) A Figure 12. V Undervoltage Lockout Trip Point CC versus Temperature MC33470 0 0.8 30 0.6 60 0.4 90 Phase 0.2 120 0 150 180 −0.2 1000 −75 −50 Figure 9. Feedback Threshold Voltage 5 ...
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... MC33470 Figure 14. MC33470 Application Circuit http://onsemi.com 7 ...
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... G1 G2 The MC33470 is a monolithic, fixed frequency power switching regulator specifically designed for dc−to−dc converter applications which provide a precise supply voltage for state of the art processors. The MC33470 operates as fixed frequency, voltage mode regulator containing all the active functions required to ...
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... I OUTEN Input and OT Output Pins On and off control of the MC33470 may be implemented with the OUTEN pin. A logic “1” applied the OUTEN pin, where a logic “1” is above 2.0 V, will allow normal operation of the MC33470. The OUTEN pin also has multiple thresholds to provide over temperature protection ...
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... As with all buck converters, input current is drawn in pulses. In this case, the current pulses may peak 1.5 mH choke is used, two parallel OSCON 150 mF capacitors will provide a filter cutoff frequency of 7.5 kHz. MC33470 APPLICATIONS INFORMATION 6. Feedback Loop Compensation The corner frequency of the output filter with L = 1.5 mH and = 1640 ...
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... MC33470 Description . During initial power application, both G2 and G1 are held low until both V ...
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... MC33470 Table 1. Voltage Identification Code Á Á Á Á Á Á Á Á Á Á Á Á Á VID2 VID1 Á ...
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... MC33470DWR2G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. MC33470 Table 2. Connector Pin Function Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á ...
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... MC33470 C1 R10 C12 C11 C10 Figure 18. PC Board Top View C6 R2 C13 C17 Figure 19. PC Board Bottom View http://onsemi.com C16 R2 ...
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... DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE PROTRUSION SHALL BE 0.13 TOTAL IN EXCESS OF B DIMENSION AT MAXIMUM MATERIAL CONDITION. MILLIMETERS DIM MIN MAX A 2.35 2.65 A1 0.10 0.25 B 0.35 0.49 C 0.23 0.32 D 12.65 12.95 E 7.40 7.60 e 1.27 BSC H 10.05 10.55 h 0.25 0.75 L 0.50 0. Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative MC33470/D ...