NX5P2553GV - Precision Adjustable Current-Limited Power Switch | NXP
부품 번호: NX5P2553GV ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0.92 | $0.92 |
| 10 | $0.82 | $8.20 |
| 100 | $0.71 | $71.00 |
| 500 | $0.62 | $310.00 |
| 1,000 | $0.55 | $550.00 |
| 3,000 | $0.48 | $1,440.00 |
NX5P2553GV 개요
What is a current-limited power switch? A current-limited power switch is an integrated semiconductor that combines an N-channel MOSFET pass element with protection, control, and fault-reporting circuitry on a single die. It sits between a power source (typically a USB VBUS rail or a battery) and a downstream load, providing controlled turn-on, programmable current limiting, and automatic isolation during fault events. As a category, current-limited power switches belong to the power management hierarchy: power switch -> load switch -> power management IC -> semiconductor. They are distinct from linear regulators (which actively regulate voltage) and from DC-DC converters (which switch at high frequency).
Key features include under-voltage lockout (UVLO) that prevents the switch from operating with insufficient input headroom, over-current protection (OCP) with an externally programmable ILIM threshold set by a resistor to ground, over-temperature protection (OTP) that latches or auto-restarts the switch when junction temperature exceeds the safe limit, and reverse-bias protection that blocks current flow when VOUT exceeds VIN. The ILIM pin enables precision current-limit adjustment, and the open-drain fault flag (FLAG or PG/FG) signals fault conditions to a host controller.
Architecturally, the NX5P2553 uses a low-RDS(on) N-channel MOSFET pass element driven by an internal charge pump, ensuring full enhancement across the supported input range. The protection comparators and reference circuits use bandgap-referenced thresholds for accuracy over temperature. The TSOP-6 package provides a thermal pad for heat dissipation, though at sustained high currents the on-chip OTP will engage and cycle the switch to protect silicon integrity.
Typical applications include USB port power switching in hubs, chargers, and peripherals; power-distribution switches in portable consumer electronics; load-management circuits in mobile devices; battery-pack protection interfaces; and any system needing controlled inrush with automatic fault isolation. The wide input range and small footprint also suit embedded IoT modules and single-board computer accessory ports.
When designing with this device, calculate the ILIM resistor based on the desired trip current and verify the worst-case power dissipation at maximum load and minimum VIN. Place the input and output ceramic bypass capacitors close to the device pins and ensure the FLAG pull-up is correctly referenced. Avoid routing high-current return paths through signal ground planes.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineering decision support beyond what DigiKey, Mouser, or Octopart product pages offer.
드롭인 대체품: NX5P2553GV — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
NX5P2553GW
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
NX5P2553GVH
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
NCP349MNAFTBG
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AP2141SG-13
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AP2151SG-13
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MIC2026-1YM
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
NX5P2553GV 최대 정격 & 전기적 특성
| Product Type | Precision adjustable current-limited power switch |
| Switch Topology | Single N-channel MOSFET pass element |
| On-Resistance (RDS(on)) | approximately 90 mOhm at VGS = 5 V |
| Current Limit Programming | External resistor on ILIM pin |
| Under-Voltage Lockout (UVLO) | Yes (integrated) |
| Over-Current Protection (OCP) | Yes (programmable via ILIM) |
| Over-Temperature Protection (OTP) | Yes (integrated) |
| Reverse-Bias Protection | Yes (VOUT > VIN isolation) |
| Fault Flag Output | Open-drain flag signal |
| 패키지 | TSOP-6 (SOT-457 / SC-74 equivalent) |
| 실장 유형 | Surface Mount (Gull-wing leads) |
| 동작 온도 범위 | Industrial grade (-40C to +85C) |
| RoHS 상태 | Compliant |
NX5P2553GV 핀 구성
| 핀 1 | VIN — Input supply voltage |
| 핀 2 | GND — Ground reference |
| 핀 3 | ILIM — Current-limit programming (external resistor to GND) |
| 핀 4 | FLAG — Open-drain fault indicator output |
| 핀 5 | EN — Enable control input |
| 핀 6 | VOUT — Switched output to load |
일반적인 애플리케이션
NX5P2553GV 적합 용도: 6 애플리케이션s: USB VBUS Port Power Switching, Portable / Battery-Powered Load Management, Hot-Swap / Hot-Plug Power Distribution, IoT and Single-Board Computer Accessory Ports, Consumer Charger and Cradle Power Switching, Industrial Control and Embedded Module Power.
USB VBUS Port Power Switching
The NX5P2553GV is ideal for USB VBUS power switching in host, hub, and peripheral designs. Its approximately 90 mOhm RDS(on) at VGS=5V minimizes voltage drop on the 5V VBUS rail, while the externally programmable ILIM pin allows precise setting of the port current to USB 2.0 (500 mA) or USB 3.x (900 mA) levels per application. The integrated UVLO prevents turn-on with insufficient VIN headroom, and OCP plus OTP protect against downstream shorts and thermal runaway. Placed between the upstream 5V rail and the USB connector VBUS pin with 1uF-10uF ceramic bypass capacitors, the device provides clean inrush control and fault isolation without the BOM cost of a discrete MOSFET plus fuse solution.
추천
Portable / Battery-Powered Load Management
In portable and battery-powered products the NX5P2553GV manages power distribution to subsystems such as radios, sensors, and peripherals. Its reverse-bias protection is critical when a downstream boost converter or charger can back-drive the main rail, and its OTP cycles the switch on thermal stress rather than latching permanently, supporting graceful battery recovery. Programmable current limit via the ILIM pin lets designers match the switch to specific load inrush profiles (e.g. an LED flash bank or a haptic driver). The TSOP-6 footprint is PCB-efficient, enabling placement next to the battery connector without consuming layout area.
추천
Hot-Swap / Hot-Plug Power Distribution
Hot-swap and hot-plug applications benefit from the NX5P2553GV's controlled turn-on and programmable current limit, which limit inrush into discharged load capacitances. The integrated UVLO ensures the switch remains off until VIN reaches a valid operating threshold, preventing partial-turn-on glitches. OTP protects the silicon during sustained overload, and the FLAG pin provides a hardware signal to a system controller that can then log the fault or sequence the system. Compared to discrete MOSFET + fuse designs, the NX5P2553GV gives faster, more precise response and resettable protection.
추천
IoT and Single-Board Computer Accessory Ports
For IoT gateways and single-board computers, the NX5P2553GV provides protected power switching on accessory ports (sensor headers, expansion connectors, debug ports). Its compact TSOP-6 footprint allows it to fit alongside connector pin headers on dense SBC layouts. Programmable current limit via ILIM lets designers set per-port budgets, and integrated protections isolate faults so a failed accessory does not brown out the main system. The FLAG signal can drive an LED or interrupt pin for diagnostics.
추천
Consumer Charger and Cradle Power Switching
In charger cradles, docking stations, and consumer peripherals the NX5P2553GV switches the power rail feeding the device's main charging or interface circuitry. Its reverse-bias protection prevents a charged device from back-driving the cradle when the host is unpowered, and OTP protects against failed-charging conditions. The open-drain FLAG output can be routed to an LED for visual fault indication, simplifying user feedback. Programmable current limit enables tuning across different product variants from a single BOM.
추천
Industrial Control and Embedded Module Power
Industrial control systems and embedded modules benefit from the NX5P2553GV's industrial temperature range (-40C to +85C) and robust protection suite. In PLC I/O modules, sensor hubs, and industrial gateways the switch protects downstream 5V or 3.3V rails from field wiring faults. The programmable ILIM threshold supports per-port current budgets matched to specific sensor types. The TSOP-6 footprint is PCB-efficient for densely populated industrial boards where multiple power rails are required.
추천
추천 제품 요약
엔지니어링 참조 데이터: NX5P2553GV — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | NX5P2553GW | NX5P2553GVH | NCP349MNAFTBG | AP2141SG-13 | AP2151SG-13 | MIC2026-1YM |
|---|---|---|---|---|---|---|---|
| Package | TSOP-6 (SOT-457) | TSOP-6 (SOT-457) - same | TSOP-6 (SOT-457) - same | TSOP-6 (SOT-457) - same | TSOP-6 (SOT-457) - same | TSOP-6 (SOT-457) - same | TSOP-6 (SOT-457) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | onsemi | Diodes Incorporated | Diodes Incorporated | Microchip Technology |
| On-Resistance (RDS(on)) | approximately 90 mOhm at 5V | approximately 90 mOhm at 5V | approximately 90 mOhm at 5V | approximately 100 mOhm at 5V | approximately 95 mOhm at 5V | approximately 95 mOhm at 5V | approximately 100 mOhm at 5V |
| Adjustable Current Limit (ILIM) | Yes (external resistor) | Yes (external resistor) | Yes (external resistor) | Yes (external resistor) | Fixed 500 mA typical | Fixed 500 mA typical | Yes (external resistor) |
| UVLO Protection | Yes (integrated) | Yes | Yes | Yes | Yes | Yes | Yes |
| Over-Temperature Protection | Yes (auto-recovery) | Yes | Yes | Yes | Yes | Yes | Yes |
| Reverse-Bias Protection | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Fault Flag Output | Open-drain FLAG | Open-drain FLAG | Open-drain FLAG | Open-drain FLAG | Open-drain FLAG | Open-drain FLAG | Open-drain FLAG |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
주요 차별점
- Integrated precision adjustable ILIM with external resistor (vs AP2141SG-13)
- Reverse-bias protection integrated on the same die (vs AP2151SG-13)
- NXP/Nexperia dual-source availability (vs MIC2026-1YM)
설계 노트
Select the ILIM resistor carefully: the OCP trip point is inversely proportional to the resistor value. Per the NXP NX5P2553 datasheet ILIM-vs-R curve, a typical 1 kOhm resistor sets the limit near the mid-range of the device's capability. Verify the worst-case power dissipation at maximum load and minimum VIN, and ensure the resulting junction temperature stays below the OTP threshold with adequate PCB copper. Estimated: at 5V VIN, 1A load, and 90 mOhm RDS(on), the switch dissipates approximately 0.09 W, which is well within the TSOP-6 thermal envelope with proper copper area.
Place input and output bypass capacitors as close to the VIN and VOUT pins as possible. Use a 1 uF to 10 uF X5R/X7R ceramic capacitor on both VIN and VOUT for high-frequency decoupling. Keep the ILIM resistor and its ground trace short to prevent noise pickup that could shift the current-limit threshold. The TSOP-6 package benefits from a small thermal pad or copper pour under the package to reduce junction-to-ambient thermal resistance.
Do not exceed the absolute maximum VIN rating specified in the NXP NX5P2553 datasheet. Verify that the FLAG open-drain pull-up voltage does not exceed the device's absolute maximum ratings. Avoid routing high-current return paths through the same ground plane as the FLAG or ILIM analog traces, as ground bounce can cause false fault assertions or ILIM threshold shifts. Always cross-check the enable logic polarity (active-high vs active-low) before substituting alternative parts.
규정 준수 정보
RoHS and REACH compliant per NXP product page; lead-free and halogen-free package construction. Standard industrial temperature grade (-40C to +85C); not AEC-Q100 qualified - for automotive applications choose an AEC-Q100 qualified part.
