ncp5217a ON Semiconductor, ncp5217a Datasheet
ncp5217a
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ncp5217a Summary of contents
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... NCP5217A Single Synchronous Step-Down Controller The NCP5217A is a synchronous step−down controller for high performance systems battery−power systems. The NCP5217A includes a high efficiency PWM controller. A pin is provided to enable or disable forced PWM mode of operation. An internal power good voltage monitor tracks the SMPS output. NCP5217A also features soft− ...
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... SWN 12 COMP IDRP/OCP 11 FB VCC 10 PGOOD DL/TRESET 9 AGND PGND 7 8 Figure 2. Typical Application Circuit http://onsemi.com 2 Thermal Shutdown 14 BST 13 DH NCP5217A 12 SWN Control Logic, OSC Protection, 11 RAMP IDRP/OCP Generator and UVLO PWM Logic Control VCC 10 VCC 9 DL/TRESET 8 PGND VIN VOUT PGND ...
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PIN FUNCTION DESCRIPTION Pin No. Symbol 1 EN_SKIP This pin serves as two functions. Enable: Logic control for enabling the switcher. SKIP: Power saving mode (Skip and Force PWM) programmable pin. 2 CS+ Inductor current differential sense non−inverting input. 3 ...
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ELECTRICAL CHARACTERISTICS (V Characteristics Symbol SUPPLY VOLTAGE Input Voltage V Operating Voltage V CC SUPPLY CURRENT V Quiescent Supply Current IVCC_FPWM CC in FPWM operation V Quiescent Supply Current IVCC_PS CC in Power Saving Operation V Shutdown Current IVCC_SD CC ...
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ELECTRICAL CHARACTERISTICS (V Characteristics Symbol INTERNAL SOFT−START Soft−Start Time T VOLTAGE ERROR AMPLIFIER DC Gain GAIN_VEA Unity Gain Bandwidth BW_VEA Slew Rate SR_VEA FB Bias Current Ibias_FB Output Voltage Swing Vmax_EA Vmin_EA DIFFERENTIAL CURRENT SENSE AMPLIFIER CS+ and CS− Common−mode ...
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ELECTRICAL CHARACTERISTICS (V Characteristics Symbol GATE DRIVERS DH Source Current Isource_DH DH Sink Current Isink_DH DL Source Current Isource_DL DL Sink Current Isink_DL Dead Time TD_LH TD_HL Negative Current Detection NCD_TH Threshold SWN source leakage ISWN_SD Internal Resistor from DH ...
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TYPICAL OPERATING CHARACTERISTICS 0.83 0.82 0.81 0.8 0.79 0.78 0.77 −40 − AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) Figure 3. V Voltage vs Ambient Temperature ref 315 310 305 300 295 290 285 −40 − AMBIENT ...
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TYPICAL OPERATING CHARACTERISTICS Top to Bottom: EN, SWN PGOOD o Figure 9. Powerup Sequence Top to Bottom: SWN_Slave, SWM, V Figure 11. On Line Mode Change (CCM " DCM) Top to Bottom: EN, SWN, V Figure 10. Powerdown ...
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... The NCP5217A features power saving function which can increase the efficiency at light load ideal for battery operated systems. The IC is packaged in QFN14. Control Logic The internal control logic is powered controlled by an EN_SKIP pin ...
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Top to Bottom SWN Transient Signal o Figure 16. Transient Response with TRE Enable Adaptive Voltage Positioning (AVP) For applications with fast transient currents, adaptive voltage positioning can reduce peak−to−peak output voltage deviations due to load transients. With ...
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... The following diagram shows the typical behavior of OCP. Top to Bottom : SWN PGOOD Figure 20. Overcurrent Protection The NCP5217A uses lossless inductor current sensing for acquiring current information. In addition, the threshold OCP voltage can be programmed to some desired value by setting the programming resistor Rocp ...
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V goes above upper UV FB threshold. EN resets or power recycle the device can exit the fault. The following diagram shows the typical waveform when OVP event occurs. Top to Bottom : SWN, DL, V ...
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... Panasonic ECJ1VB1E104K Panasonic ECJ2FB1E105M Panasonic ECJ2FB1E475M − − Panasonic ECJ1VB1E104M ON Semiconductor BAT54LT1 − − ON Semiconductor BSS138L LUMEX SML−LX0805GC−TR LUMEX SML−LX0805IC−TR Betamax 2211S−40G−F1 HARWIN H2121−01 Tyco Electronics RS Stock# 420−5401 C & Stock# 249−2984 ...
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... PCMC104T−1R0MN Panasonic ERJ3EKF6201V Panasonic ERJ3EKF9101V Panasonic EEFSX0D331XR Sanyo 2TPLF330M6 Manufacturer Manufacturer P/N Panasonic ERJ3EKF8202V Panasonic ERJ3EKF1001V Panasonic ERJ3EKF5001V Panasonic ERJ3EKF5711V Panasonic ECJ1VC1H271K Panasonic ECJ1VC1H150K Panasonic ECJ1VB1H561K ON Semiconductor NTMS4705N − − Cyntec PCMC104T−1R0MN Panasonic ERJ3EKF4301V − − Panasonic EEFUD0D221XR Sanyo 2R5TPL220MC ...
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DEMO BOARD BILL OF MATERIAL Item Component Compensation Network M1 R19 Power Stage & Current Sense R20 C14, C15 ( ...
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... DIM MIN MAX A 0.80 1.00 A1 0.00 0.05 A3 0.20 REF b 0.18 0.30 D 3.50 BSC D2 1.90 2.15 E 3.50 BSC E2 1.90 2.15 e 0.50 BSC e2 1.50 BSC K 0.20 −−− L 0.30 0.50 L1 0.00 0.03 SOLDERING FOOTPRINT* 2X 3.80 0.63 14X 14X 0.36 0.50 PITCH 1.50 PITCH DIMENSIONS: MILLIMETERS ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP5217A/D ...