NCP45520IMNTWG-H - 10.5A ecoSWITCH Load Switch, 8-DFN | onsemi
N.º da peça: NCP45520IMNTWG-H ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.45 | $1,45 |
| 10 | $1.27 | $12,70 |
| 100 | $1.05 | $105,00 |
| 500 | $0.86 | $430,00 |
| 1.000 | $0.72 | $720,00 |
| 3.000 | $0.58 | $1.740,00 |
NCP45520IMNTWG-H Visão geral
An integrated load switch (also called a power distribution switch or hot-swap FET) is a power-management IC that combines an N-channel power MOSFET, gate driver, fault-protection logic, and diagnostic outputs in a single package. Load switches sit hierarchically below DC-DC converters in the power-tree and are used to turn subsystems on/off, isolate rails during fault conditions, and limit inrush current at plug-in events. They are widely adopted in portable, industrial, and computing platforms where PCB area, BOM count, and predictable power-up behavior are priorities.
Key features of the NCP45520IMNTWG-H include a continuous load current of 10.5 A, an on-resistance of 12.8 mOhm typical, an input voltage range of 0.5 V to 13.5 V on Vout/VIN, configurable inrush control via an external soft-start capacitor, an active-high enable input, and an active-high open-drain Power Good (PG) output that requires an external pull-up resistor of at least 1 kOhm. Protection features include thermal protection, short-circuit protection, and under-voltage lockout (UVLO).
The architecture integrates a charge-pump-driven N-channel MOSFET with on-die fault logic and a soft-start pinout for programmable slew rate. The result is a clean, monotonic turn-on waveform that minimizes input rail droop and downstream voltage transients, which is especially valuable when large bulk capacitors are present on the load side.
Common applications for this device include USB port power switching in notebooks and hubs, hot-swap and section-power management in servers and storage arrays, load management in industrial PLCs and factory equipment, battery-powered portable electronics, and any 0.5-13.5 V rail that requires controlled turn-on and fault isolation.
When designing with this part, place the soft-start capacitor as close as possible to the SS pin to set the desired inrush-current limit, select the PG pull-up resistor per the datasheet guidance (>=1 kOhm), and verify thermal performance under worst-case Vout and continuous load conditions because the 2x2 mm DFN package has limited theta_JA margin.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para NCP45520IMNTWG-H — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com NCP45520IMNTWG-H (mesmo formato e footprint) — diferindo em Fault Protection, Package, Continuous Load Current, Enable Input, MSL Level.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
NCP45520IMNTWG
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NCP45521IMNTWG-H
✅ Drop-In✓ Em estoque
$0.79 / unidade
Ver ficha técnica →NCP45521IMNTWG
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NCP45560IMNTWG-H
✅ Drop-In✓ Em estoque
$0.71 / unidade
Ver ficha técnica →NCP45520IMNTWG-H
✅ Drop-In✓ Em estoque
$0.58 / unidade
Ver ficha técnica →NCP45520IMNTWGH
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NCP45520IMNTWG-H Classificações máximas e características elétricas
| Manufacturer | onsemi |
| Series | ecoSWITCH (NCP45520 / NCP45521) |
| Função | Load Switch / Power Distribution Switch |
| Topologia | 1:1 N-Channel integrated load switch |
| Continuous Load Current | 10.5 A (11.5 A per datasheet description) |
| On-Resistance (Ron) | 12.8 mOhm typical |
| Input / Output Voltage Range (Vout / VIN) | 0.5 V to 13.5 V |
| Enable Input | Active-High |
| Saída Power Good | Active-High, open-drain (requires >=1 kOhm pull-up) |
| Soft-Start / Slew-Rate Control | Yes, external SS capacitor |
| Fault Protection | Thermal, short-circuit, under-voltage lockout (UVLO) |
| Encapsulamento | 8-DFN EP (2x2 mm) |
| Tipo de montagem | Surface Mount |
| Nível MSL | 3 (168 hours) per PartGenie |
| Status RoHS | Compliant (ROHS3 Compliant per PartGenie) |
| REACH Status | Unaffected per PartGenie |
| Status do ciclo de vida | Active |
Configuração de pinos do NCP45520IMNTWG-H
| Pino 1 | VOUT — Switched output voltage to the load |
| Pino 2 | GND — Ground return |
| Pino 3 | EN — Active-high enable input (logic-high turns the MOSFET on) |
| Pino 4 | PG — Active-high, open-drain Power Good output; requires >=1 kOhm external pull-up |
| Pino 5 | SS — Soft-start programming pin; external capacitor sets output slew rate |
| Pino 6 | VIN — Input supply voltage (0.5 V to 13.5 V) |
| Pino 7 | GND — Ground return |
| Pino 8 | VOUT — Switched output voltage to the load (second bond) |
| Pino EP | EP — Exposed thermal pad; solder to PCB ground copper for thermal dissipation |
Aplicações típicas
NCP45520IMNTWG-H é adequado para 6 aplicaçãos: USB Port Power Switching (VBUS Distribution), Hot-Swap / Section Power Management in Servers and Storage, Industrial PLC and Factory I/O Power Distribution, Battery-Powered Portable Electronics Load Management, Solid-State Drive (SSD) and Memory Subsystem Power Gating, Automotive Infotainment and Body Electronics (Sub-Networks).
USB Port Power Switching (VBUS Distribution)
The NCP45520IMNTWG-H is a strong fit for USB VBUS power switching in hubs, notebooks, and Type-C downstream-facing ports. Its 0.5-13.5 V operating range covers 5 V VBUS and the legacy 0.9 A/1.5 A/3 A USB Type-C current profiles, while the 12.8 mOhm typical Ron keeps conduction loss low even at 3 A continuous load. Placed between the system 5 V rail and the VBUS pin, the soft-start capacitor programs a controlled turn-on ramp that absorbs the inrush from cable capacitance and downstream bulk caps without drooping the upstream rail. The active-high enable allows a GPIO or USB-PHY to gate VBUS, and the open-drain PG output back to a controller confirms when VBUS has reached regulation before enumeration begins.
Recomendado
Hot-Swap / Section Power Management in Servers and Storage
The NCP45520IMNTWG-H provides section-level hot-swap behavior for server and storage subsystems where individual DC rails must be brought up safely. Its integrated 10.5 A N-channel MOSFET replaces a discrete MOSFET, gate driver, and sense resistor chain, while the soft-start pin limits inrush into large bulk capacitor banks on the load side. Per the onsemi NCP45520 datasheet, on-die short-circuit and thermal protection isolate faults quickly without requiring external supervisor ICs. The exposed thermal pad in the 8-DFN EP package spreads heat into the inner-layer copper pour, sustaining 10.5 A continuous load on multi-rail cards. The PG pin can be fed into a board-management controller for telemetry.
Recomendado
Industrial PLC and Factory I/O Power Distribution
The NCP45520IMNTWG-H suits industrial PLC digital-output modules and isolated sensor-power domains that need controlled turn-on and fault isolation. Its 0.5-13.5 V Vout range covers 24 V field power stepped down to 5 V or 3.3 V rails, while the 10.5 A rating handles multi-channel digital-output loads. Per the onsemi datasheet, on-die thermal protection and UVLO reject under-voltage transients common on long cable runs, and the open-drain PG output back to the PLC's MCU enables deterministic fault recovery. The 2x2 mm DFN EP footprint fits into compact industrial module form factors where PCB area is at a premium.
Recomendado
Battery-Powered Portable Electronics Load Management
The NCP45520IMNTWG-H is well-suited to portable electronics that require domain-level power gating to extend battery life. Per the onsemi NCP45520 datasheet, its low quiescent current draw when disabled minimizes parasitic drain, while the 12.8 mOhm Ron preserves efficiency in active state. The active-high enable lets an application processor or power-management IC shut down subsystems such as radios, sensors, or display backlights during sleep. Soft-start limits inrush on wake events, preventing pack voltage collapse on heavily loaded lithium-ion cells. The 8-DFN EP package fits handheld form factors with strict z-height budgets.
Recomendado
Solid-State Drive (SSD) and Memory Subsystem Power Gating
The NCP45520IMNTWG-H provides compact, controlled power gating for SSD, eMMC, and DRAM subsystems in client and embedded computing platforms. Per the onsemi NCP45520 datasheet, the 10.5 A rating covers multi-channel NAND power rails, while the 12.8 mOhm Ron minimizes IR drop that could degrade memory margins during peak write bursts. Soft-start inrush control prevents large NAND-bulk-cap banks from collapsing upstream rails on initialization. The PG output can be combined with an external voltage monitor to gate host-side readiness, improving system-level power-on sequencing determinism. The 2x2 mm DFN EP package fits tight mobile and M.2 layouts.
Recomendado
Automotive Infotainment and Body Electronics (Sub-Networks)
The NCP45520IMNTWG-H suits automotive sub-networks inside infotainment, ADAS modules, and body controllers where multiple low-voltage rails must be gated and protected. Per the onsemi NCP45520 datasheet, the 0.5-13.5 V range covers 5 V and 12 V body domains, while the soft-start and short-circuit features absorb load transients from relays, sensors, and actuators. The exposed-pad package improves thermal dissipation in enclosed ECU housings. Although not explicitly AEC-Q100 qualified in the verified web data, the integrated fault protection suits pre-qualified automotive design verification; design teams should check onsemi's automotive datasheet index for AEC-Q100 grade parts in the same NCP455xx family.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para NCP45520IMNTWG-H — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | NCP45520IMNTWG | NCP45521IMNTWG-H | NCP45521IMNTWG | NCP45560IMNTWG-H |
|---|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | onsemi | onsemi |
| Package | 8-DFN EP (2x2 mm) | 8-DFN EP (2x2 mm) - same | 8-DFN EP (2x2 mm) - same | 8-DFN EP (2x2 mm) - same | 8-DFN EP (2x2 mm) - same |
| Continuous Load Current | 10.5 A | 10.5 A | 10.5 A | 10.5 A | Higher (verify per datasheet) |
| Enable Polarity | Active-High | Active-High | Active-Low | Active-Low | Active-High |
| Power Good (PG) Output | Yes (active-high, open-drain) | Yes | Yes | Yes | Yes |
| Soft-Start Pin | Yes (external cap) | Yes | Yes | Yes | Yes |
| Fault Protection | Thermal, short-circuit, UVLO | Thermal, short-circuit, UVLO | Thermal, short-circuit, UVLO | Thermal, short-circuit, UVLO | Thermal, short-circuit, UVLO |
Principais diferenciais
- Active-high enable with Power Good output in a 2x2 mm DFN (vs NCP45521IMNTWG-H)
- Highest on-die integration (MOSFET + soft-start + PG + fault protection) (vs NCP45560IMNTWG-H)
- Wide 0.5-13.5 V operating range covers USB, 5 V, and 12 V rails (vs Generic discrete MOSFET load switch designs)
Notas de projeto
Estimated: at VIN=5 V, VOUT=5 V, and 10.5 A continuous load, the on-resistance of 12.8 mOhm dissipates approximately P = I^2 * R = 10.5^2 * 0.0128 = 1.41 W in the 8-DFN EP package. The exposed thermal pad must be soldered to a sufficient PCB copper pour (recommended at least 1 square inch of 1 oz copper on top and inner layers with thermal vias) to keep the junction below the maximum rated temperature. Designers should consult the onsemi NCP45520 datasheet thermal resistance table and de-rate load current at elevated ambient temperatures or when PCB copper area is reduced.
Per the onsemi NCP45520 datasheet, place input and output bulk capacitors as close as possible to the VIN and VOUT leads to minimize parasitic inductance. Add a 0.1 uF ceramic bypass cap directly at the VIN pin for switching-edge decoupling. The exposed pad (EP) must be soldered to a PCB ground copper pour for both thermal and electrical performance; use a 3x3 via array of 0.2 mm drilled vias to inner-layer ground planes for heat sinking. The PG pin requires a pull-up resistor of at least 1 kOhm to a compatible VTERM supply, located near the PG pin to avoid noise coupling.
Verify EN polarity matches your GPIO logic before substituting the NCP45521 family. The NCP45520 series uses active-high enable, while the NCP45521 series uses active-low enable. Do not exceed the maximum operating voltage of 13.5 V or operate without proper thermal dissipation on the exposed pad. When replacing with the NCP45560 family, confirm the higher current capability and any thermal or PCB-layout differences per the NCP45560 datasheet. Avoid leaving the SS pin open - always populate the soft-start capacitor per the design guidance to control inrush current.
Informações de conformidade
Per PartGenie, the NCP45520IMNTWG-H is ROHS3 Compliant and REACH Unaffected. RoHS compliance is also noted on the JRH Electronics distributor page. Halogen-free status is not explicitly listed in the verified web data. AEC-Q100 automotive qualification is not explicitly listed for this specific H-variant in the verified web data; verify the automotive-grade equivalent on onsemi's automotive datasheet index.
