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NCP45521 Dataheets PDF



Part Number NCP45521
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description Advanced Load Management
Datasheet NCP45521 DatasheetNCP45521 Datasheet (PDF)

ecoSWITCHt Advanced Load Management Controlled Load Switch with Low RON NCP45520, NCP45521 The NCP4552x series of load switches provide a component and area-reducing solution for efficient power domain switching with inrush current limit via soft start. In addition to integrated control functionality with ultra low on−resistance, these devices offer system safeguards and monitoring via fault protection and power good signaling. This cost effective solution is ideal for power management and hot.

  NCP45521   NCP45521



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ecoSWITCHt Advanced Load Management Controlled Load Switch with Low RON NCP45520, NCP45521 The NCP4552x series of load switches provide a component and area-reducing solution for efficient power domain switching with inrush current limit via soft start. In addition to integrated control functionality with ultra low on−resistance, these devices offer system safeguards and monitoring via fault protection and power good signaling. This cost effective solution is ideal for power management and hot-swap applications requiring low power consumption in a small footprint. Features • Advanced Controller with Charge Pump • Integrated N-Channel MOSFET with Low RON • Input Voltage Range 0.5 V to 13.5 V • Soft-Start via Controlled Slew Rate • Adjustable Slew Rate Control (NCP45521) • Power Good Signal (NCP45520) • Thermal Shutdown • Undervoltage Lockout • Short-Circuit Protection • Extremely Low Standby Current • Load Bleed (Quick Discharge) • This is a Pb−Free Device Typical Applications • Portable Electronics and Systems • Notebook and Tablet Computers • Telecom, Networking, Medical, and Industrial Equipment • Set−Top Boxes, Servers, and Gateways • Hot Swap Devices and Peripheral Ports VCC EN PG* VIN Bandgap & Biases Control Logic Thermal, Undervoltage & Short−Circuit Protection Charge Pump Delay and Slew Rate Control SR* GND BLEED VOUT Figure 1. Block Diagram (*Note: either PG or SR available for each part) www.onsemi.com RON TYP 9.5 mW 10.1 mW 12.8 mW VCC 3.3 V 3.3 V 3.3 V VIN 1.8 V 5.0 V 12 V IMAX 10.5 A 1 DFN8, 2x2 CASE 506CC MARKING DIAGRAM 1 XX MG G XX = PH for NCP45520−H = PL for NCP45520−L = SH for NCP45521−H = SL for NCP45521−L M = Date Code G = Pb−Free Package (Note: Microdot may be in either location) PIN CONFIGURATION VIN 1 8 VOUT EN 2 VCC 3 9: VIN 7 VOUT 6 PG or SR GND 4 (Top View) 5 BLEED ORDERING INFORMATION See detailed ordering and shipping information on page 14 of this data sheet. © Semiconductor Components Industries, LLC, 2014 February, 2020 − Rev. 4 1 Publication Order Number: NCP45520/D NCP45520, NCP45521 Table 1. PIN DESCRIPTION Pin Name 1, 9 VIN 2 EN 3 VCC 4 GND 5 BLEED 6 PG SR 7, 8 VOUT Function Drain of MOSFET (0.5 V – 13.5 V), Pin 1 must be connected to Pin 9 NCP45520−H & NCP45521−H − Active−high digital input used to turn on the MOSFET, pin has an internal pull down resistor to GND NCP45520−L & NCP45521−L − Active−low digital input used to turn on the MOSFET, pin has an internal pull up resistor to VCC Supply voltage to controller (3.0 V − 5.5 V) Controller ground Load bleed connection, must be tied to VOUT either directly or through a resistor ≤ 1 kW NCP45520 − Active−high, open−drain output that indicates when the gate of the MOSFET is fully charged, external pull up resistor ≥ 1 kW to an external voltage source required; tie to GND if not used NCP45521 − Slew rate adjustment; float if not used Source of MOSFET connected to load Table 2. ABSOLUTE MAXIMUM RATINGS Rating S.


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