NPS7601UL - 1.5A Low-Iq Load Switch, WLCSP | Nexperia
N.º de pieza: NPS7601UL ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $0.62 | $0,62 |
| 10 | $0.55 | $5,50 |
| 100 | $0.46 | $46,00 |
| 500 | $0.39 | $195,00 |
| 1.000 | $0.33 | $330,00 |
| 3.000 | $0.27 | $810,00 |
NPS7601UL Descripción general
What is a load switch? A load switch is a discrete or integrated power-distribution switch - typically a controlled MOSFET plus support circuitry - placed between an upstream rail (battery, PMIC, DCDC output) and a downstream subsystem. When the function block is needed, the load switch is asserted ON to deliver current; when idle, it is asserted OFF to disconnect the load and starve leakage. This category belongs to power distribution ICs, which sit beneath power management and ultimately power-conversion ICs in the system hierarchy. Compared with a discrete P-FET + resistor divider, an integrated load switch adds reverse-current blocking, inrush control, and ultra-low quiescent current in a tiny footprint.
Key features of the NPS7601UL include an integrated low-Rdson pass element, factory-set or adjustable current-limit behaviour, controlled rise time via an external CT pin, low quiescent current on the order of single-digit microamps, and true reverse-current blocking (TRCB) that prevents current from flowing back into the source rail when VOUT exceeds VIN. The WLCSP package enables sub-1 mm x 1 mm PCB placement, suiting wearables, hearables, smartphones, IoT sensors, and other miniaturised systems where every square millimetre matters. The forward-drop regulation topology maintains VOUT close to VIN while the device is ON, minimising conduction losses.
Typical applications include always-on rails for low-power microcontrollers, power-rail gating for image sensors, OLED display bias switching, battery protection and isolation paths, USB Type-C cable power delivery line switches, and any subsystem requiring sequenced or controlled power-up. The reverse-current blocking feature is particularly valuable when multiple load switches share a bus, because it prevents back-feeding from a powered-up rail into an unpowered rail.
When designing with the NPS7601UL, place the device close to the upstream source and add a 1 uF to 10 uF ceramic bypass on the VIN and VOUT pins to stabilise the gate-driver loop and absorb load transients. The CT capacitor sets the VOUT rise time - larger values produce slower, lower-inrush turn-on at the cost of longer enable-to-ready delay. Keep the WLCSP land pattern symmetric and avoid placing signal traces under the die to prevent mechanical stress on the solder joints during thermal cycling.
This page synthesises distributor pricing, drop-in Nexperia alternatives, and application-specific design notes that are not consolidated in the manufacturer datasheet, helping engineers compare, select, and source the NPS7601UL quickly.
Alternativas directas para NPS7601UL — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
NPS7601UP
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
NPS7601
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
NPS7601UL Valores máximos y características eléctricas
| Función | Load switch with true reverse-current blocking |
| Input Voltage Range (VIN) | 1.5 V to 5.5 V |
| Continuous Load Current | 1.5 A |
| Topología | Regulated forward-drop |
| Reverse-Current Blocking | True reverse-current blocking (always-on protection) |
| Quiescent Current (Iq) | Low-Iq (single-digit uA, exact value in datasheet) |
| Rise-Time Control | External CT capacitor sets dV/dt |
| Enable Input | Active-high logic enable |
| Encapsulado | WLCSP (UL suffix) |
| Tipo de montaje | Surface Mount |
| Canales | 1 |
| Estado RoHS | Compliant (Nexperia standard) |
Configuración de pines de NPS7601UL
| Pin A1 | VIN — Input voltage supply |
| Pin B1 | VOUT — Switched output to load |
| Pin A2 | EN — Active-high enable input |
| Pin B2 | CT — Rise-time programming capacitor |
| Pin A3 | GND — Ground return |
| Pin B3 | NC — Not connected (per datasheet) |
Aplicaciones típicas
NPS7601UL es adecuado para 6 aplicacións: Battery-Powered Wearable Rails, USB Type-C VBUS Line Switch, OLED Display Bias Gating, Image Sensor Power Rail Switch, Always-On Microcontroller Rail, Battery Protection and Isolation Path.
Battery-Powered Wearable Rails
The NPS7601UL's 1.5 A continuous rating and 1.5 V to 5.5 V input range make it ideal for switching sub-system rails in wearables such as smartwatches, fitness bands, and hearables, where the upstream rail is a lithium-ion cell or PMIC output. Its true reverse-current blocking prevents back-drive into the battery or PMIC when an attached accessory supplies VBUS voltage that momentarily exceeds the local rail. The WLCSP footprint fits next to the SoC and sensor cluster on a cramped mainboard, and the single-digit uA quiescent current preserves battery life during deep sleep. A 1 nF to 10 nF CT capacitor programs a 1 ms to 10 ms rise time that limits inrush on the downstream decoupling bank, easing compliance with USB and Bluetooth module hot-attach budgets.
Recomendado
USB Type-C VBUS Line Switch
In USB Type-C cable and connector implementations, the NPS7601UL isolates the local VBUS rail from the cable VBUS to prevent reverse-current faults when a host or device swap momentarily back-feeds the local rail. Its 1.5 A rating covers most Type-C default-power and 5 V charging profiles, while true reverse-current blocking keeps the upstream PMIC or battery protected without an external Schottky. The regulated forward-drop topology holds VOUT within millivolts of VIN during ON state, minimising conduction loss across the load switch. A controlled CT-driven rise time damps cable-capacitance inrush that would otherwise trigger upstream hot-plug OC protection.
Recomendado
OLED Display Bias Gating
OLED panels draw pulsed current on ELVSS / ELVDD bias rails, and isolating those rails when the display is off extends panel lifetime and saves system power. The NPS7601UL's 1.5 A capability covers typical smartphone and wearable OLED bias currents, while true reverse-current blocking prevents the OLED's output capacitors from back-driving into the PMIC during display blanking transitions. The WLCSP package sits next to the display connector with minimal PCB real estate. Adjusting the CT capacitor tailors the rise time to the panel's inrush tolerance, reducing visible artefacts during panel-on sequences.
Recomendado
Image Sensor Power Rail Switch
Image sensors in mobile and IoT cameras require a quiet, controlled power-up sequence to avoid dark-frame artefacts and inrush-induced reset events. The NPS7601UL provides 1.5 A of switchable current with a CT-programmable rise time that soft-starts the sensor's regulator input. True reverse-current blocking protects the upstream PMIC when the sensor's local regulator momentarily back-drives due to a sequencing fault. The compact WLCSP package fits alongside camera modules on smartphone mainboards where board area is at a premium. Low quiescent current keeps the disabled branch from draining the battery during standby.
Recomendado
Always-On Microcontroller Rail
Always-on microcontrollers, real-time clocks, and BLE radios benefit from a dedicated, reverse-current-protected rail that stays alive through deep sleep. The NPS7601UL's true reverse-current blocking ensures that even when the main PMIC is off and a residual rail is still active, no back-drive paths develop. Its 1.5 A capability covers the peak currents of BLE transmit bursts and RTC domain loads. The CT pin lets the designer slow the turn-on edge to avoid simultaneous inrush on the shared decoupling network during wake-up events.
Recomendado
Battery Protection and Isolation Path
The NPS7601UL can be placed between the battery pack output and the PMIC input as a software-controlled isolation switch in designs that need field-replaceable batteries, ship-mode, or staged power-on. Its true reverse-current blocking prevents a USB supply inserted into a depleted system from back-charging the battery. The 1.5 A rating handles peak inrush of downstream regulators during wake-up. Industrial-grade temperature support and Nexperia's automotive-grade manufacturing pedigree make it suitable for portable medical, asset-tracking, and e-mobility accessories that demand reliable isolation behaviour.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para NPS7601UL — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | NPS7601UP | NPS7601 |
|---|---|---|---|
| Brand | Nexperia | Nexperia | Nexperia |
| Package | WLCSP (UL suffix) | WLCSP (UP suffix) - same family | WLCSP family - same |
| Continuous Load Current | 1.5 A | 1.5 A | 1.5 A |
| Input Voltage Range | 1.5 V to 5.5 V | 1.5 V to 5.5 V | 1.5 V to 5.5 V |
| Reverse-Current Blocking | True reverse-current blocking (always-on) | True reverse-current blocking (always-on) | True reverse-current blocking (always-on) |
| Topology | Regulated forward-drop | Regulated forward-drop | Regulated forward-drop |
| Rise-Time Control | External CT capacitor | External CT capacitor | External CT capacitor |
| Enable Logic | Active-high | Active-high | Active-high |
Diferenciadores clave
- Always-on true reverse-current blocking (frente a Generic discrete P-FET load switch)
- Compact WLCSP footprint (frente a QFN-packaged competitors)
- CT-programmable rise time (frente a Fixed rise-time load switches)
Notas de diseño
Place a 1 uF to 10 uF low-ESR ceramic bypass capacitor as close as possible to the VIN and VOUT balls of the WLCSP land pattern. The WLCSP depends on the PCB land pattern and thermal vias under the die for both electrical grounding and thermal spreading. Avoid routing signal traces under the die to minimise mechanical stress on the solder joints during thermal cycling. Nexperia's recommended land pattern should be followed exactly for reflow reliability.
Select the CT capacitor value to balance inrush current against power-rail sequencing timing budgets - 1 nF typically yields ~1 ms rise time, 10 nF yields ~10 ms. In multi-rail designs, sequence the load switches so that back-feeding rails cannot exceed VIN during transient conditions; the always-on reverse-current blocking will then safely prevent any residual back-drive. Verify sequencing with worst-case timing across the full temperature range.
Do not exceed the 1.5 A continuous load current rating without verifying thermal performance in the WLCSP; sustained high current requires thermal vias and adequate copper pour. Do not assume reverse-current blocking is disabled when EN is low - the TRCB block is always-on, which is the intended behaviour, but designers may need an external path to discharge VOUT if very fast turn-off is required. Always consult the Nexperia NPS7601 datasheet before laying out the PCB.
Información de cumplimiento
RoHS compliant per Nexperia standard product compliance. AEC-Q100 not applicable to this consumer/industrial load switch; consult Nexperia automotive-grade datasheets if AEC-Q100 is required.
