MAX20313EWC - 6A Adjustable Current-Limit Switch | 12-WLP | ADI
N.º de pieza: MAX20313EWC ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $1.61 | $1,61 |
| 10 | $1.45 | $14,50 |
| 100 | $1.25 | $125,00 |
| 500 | $1.05 | $525,00 |
| 1.000 | $0.92 | $920,00 |
MAX20313EWC Descripción general
An adjustable current-limit switch is a power-management IC that sits between a source rail and a downstream load, regulating and capping the load current during turn-on surges, hot-plug events, or downstream faults. The MAX20313 belongs to the current-limit switch family within the broader power-management IC hierarchy (current-limit switch -> load switch -> power-management IC -> semiconductor), making it ideal for protecting USB ports, SD card interfaces, and downstream regulators from inrush and short-circuit damage.
Key features include a precise adjustable current-limit set via an external resistor, 10 mOhm (typ) on-resistance that minimizes conduction loss at high load currents, internal reverse-current blocking to prevent back-feeding when an external source is present, and thermal shutdown that disables the switch when the die overheats. The MAX20313 uses continuous current-limit mode (autoretry) during overcurrent events, automatically recovering once the fault is removed, whereas the latchoff parts (MAX20314/MAX20316) require logic reset.
Typical applications include USB Type-C VBUS current limiting, SDXC card hot-swap protection, data modem card load switches, portable media player power rails, and RF power amplifier power management in cell phones. The 1.65 x 1.45 mm WLP footprint is designed for handheld devices where every square millimeter of PCB counts and high thermal dissipation is achievable through a modest copper pour on the top layer.
When designing with the MAX20313, consider the WLP handling and reflow profile (the 12-bump array requires precise pick-and-place alignment), and verify the SET resistor value precisely against the desired ILIM using the RILIM table in the datasheet. Reverse current blocking makes the part tolerant of brown-out events but does not replace a true ideal-diode controller for OR-ing applications.
Alternativas directas para MAX20313EWC — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MAX20313EWC (mismo factor de forma y huella) — difiere en Function, Mounting Type, On-Resistance (typ), Package.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MAX20315EWC+T
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MAX20314EWC+T
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MAX20316EWC+T
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MAX20313EWC+T
✅ Sustitución directa✓ En stock
$2.46 / unidad
Ver hoja de datos →TPS25200DRCR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MAX20313EWC Valores máximos y características eléctricas
| Función | Adjustable current-limit load switch |
| Adjustable Current Limit Range | 500 mA to 6 A |
| Rango de tensión de entrada | 2.5 V to 5.5 V |
| On-Resistance (typ) | 10 mOhm |
| Continuous Current-Limit Mode | Yes (MAX20313: autoretry) |
| Latchoff Mode | No (see MAX20314/MAX20316) |
| Reverse Current Blocking | Yes (internal) |
| Apagado térmico | Yes |
| Encapsulado | 12-WLP (1.65 x 1.45 mm) |
| Temperatura de funcionamiento | -40C to +85C |
| Tipo de montaje | Surface Mount |
| Recommended for New Designs | Yes |
| Estado RoHS | Compliant |
| Series | MAX20313 |
| Manufacturer | Analog Devices / Maxim Integrated |
Configuración de pines de MAX20313EWC
| Pin A1 | IN — Input voltage (2.5 V to 5.5 V) |
| Pin A2 | OUT — Switched output to load |
| Pin A3 | GND — Ground reference |
| Pin B1 | EN — Active-high enable input |
| Pin B2 | SET — Current-limit set resistor |
| Pin B3 | GND — Ground reference |
| Pin C1 | FLAG — Open-drain fault indicator |
| Pin C2 | IN — Input voltage (parallel A1) |
| Pin C3 | OUT — Switched output (parallel A2) |
| Pin D1 | GND — Ground reference |
| Pin D2 | NC — Not connected (per datasheet) |
| Pin D3 | GND — Ground reference |
Aplicaciones típicas
MAX20313EWC es adecuado para 6 aplicacións: USB Type-C VBUS Load Switch, SD Card Hot-Swap Protection, Data Modem Card Power Rail, Portable Media Player Power Distribution, RF Power Amplifier in Cell Phones, Industrial Sensor Power Switch.
USB Type-C VBUS Load Switch
The MAX20313EWC is widely used as a Type-C VBUS current-limit switch. Its 500 mA to 6 A adjustable current limit covers all USB Type-C current advertisements (500 mA USB 2.0 default, 1.5 A/3 A Type-C, up to 5 V/3 A power delivery); the internal 10 mOhm Ron adds minimal conduction loss so VBUS efficiency remains high. Place the IC between the Type-C connector's CC-controlled P-FET input path and the downstream 5 V rail, using a 100 kOhm BME resistor on SET to program 1.5 A. Compared to a discrete hot-swap N-FET + sense amp + analog controller, the MAX20313 saves roughly 60-70 percent PCB area and ~30 percent BOM cost.
Recomendado
SD Card Hot-Swap Protection
SDXC cards commonly present large bulk capacitance that exceeds USB inrush limits (220 uF minimum). The MAX20313EWC's adjustable current limit, set to 800 mA via SET resistor, caps the inrush while allowing steady-state SD read/write currents up to ~500 mA. Reverse-current blocking prevents a back-powered SD card from sourcing current into the host USB rail during unplug, and thermal shutdown protects against pin-short events. Routinely deployed in phone and tablet designs, this part saves PCB area versus discrete hot-swap controllers.
Recomendado
Data Modem Card Power Rail
WWAN/LTE data modems in mobile platforms require sequenced, fault-tolerant power delivery. The MAX20313EWC protects the 3.8 V modem power rail (programmed via SET to 2 A) against short-circuit and overcurrent events, with thermal shutdown disabling the switch when the die overheats. Compared to a P-FET-only solution the MAX20313EWC adds fault telemetry by monitoring the FLAG output, allowing the host SoC to log fault events. The 12-WLP 1.65 x 1.45 mm footprint suits the modem daughtercard layout.
Recomendado
Portable Media Player Power Distribution
Portable media players (PMPs) and handheld entertainment devices often run on a single 3.7 V Li-ion cell with boost to 5 V, then buck to the audio and display rails. The MAX20313EWC protects each downstream rail (3 A set limit for audio amp, 1 A set limit for display) from shorts during charging-cable events. Reverse-blocking prevents the charging IC's 5 V rail from back-driving into the battery when no cable is present. The WLP footprint permits mounting directly under BGA SoC keep-out zones.
Recomendado
RF Power Amplifier in Cell Phones
RF PAs in LTE/5G handsets draw 2-3 A peak currents in short bursts, often with substantial bulk decoupling on the PA supply. The MAX20313EWC, set to 3.5 A via SET, isolates the PA supply from the main 5 V rail, allowing the PA to slew without tripping the upstream USB or charger current limit. Reverse blocking prevents the PA from back-feeding when the charger is removed, which would otherwise cause unwanted battery discharge. The 10 mOhm Ron ensures less than 100 mV drop at peak PA current, preserving PA efficiency.
Recomendado
Industrial Sensor Power Switch
In industrial 24 V-to-5 V sensor modules, the MAX20313EWC can be repurposed as a 5 V/6 A load switch by operating it at the regulator output and using SET to clamp downstream fault currents. Reverse blocking prevents back-feeding through field-wiring faults into a multi-sensor bus, and thermal shutdown detects field-wire shorts before the upstream DC-DC converter is damaged. Although the IC's absolute maximum is 6 V, the 5 V regulator output is well within its SOA.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MAX20313EWC — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MAX20315EWC+T | MAX20314EWC+T | MAX20316EWC+T | TPS25200DRCR |
|---|---|---|---|---|---|
| Package | 12-WLP (1.65 x 1.45 mm) | 12-WLP (1.65 x 1.45 mm) - same | 12-WLP (1.65 x 1.45 mm) - same | 12-WLP (1.65 x 1.45 mm) - same | VSON-10 (DRC) |
| Brand | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Texas Instruments |
| Adjustable Current Limit | 500 mA to 6 A | 500 mA to 6 A (higher continuous) | 500 mA to 6 A (latchoff) | 500 mA to 6 A (latchoff + high current) | 1.5 A to 4 A |
| On-Resistance (typ) | 10 mOhm | 10 mOhm | 10 mOhm | 10 mOhm | 30 mOhm |
| Input Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 6.5 V |
| Fault Mode | Continuous (autoretry) | Continuous (autoretry) | Latchoff | Latchoff | Latchoff (selectable) |
| Reverse Current Blocking | Yes (internal) | Yes (internal) | Yes (internal) | Yes (internal) | No (external Schottky required) |
| Thermal Shutdown | Yes | Yes | Yes | Yes | Yes |
Diferenciadores clave
- Widest adjustable current-limit range in WLP-12 footprint (frente a TPS25200DRCR)
- Integrated reverse-current blocking (frente a TPS25200DRCR)
- Same-package fault-policy options (frente a MAX20314EWC+T)
Notas de diseño
Estimated: At full 6 A load with VIN = 5 V and VOUT = 5 V (worst case for Ron loss only), conduction dissipation is I-squared x R = (6 A)-squared x 10 mOhm = 360 mW. The 12-WLP die dissipates this 360 mW into the PCB; theta_JA is approximately 60 C/W on a 1 oz 4-layer board with 1 cm-squared copper pour, leading to a 22 C junction rise. Avoid mounting the WLP directly above or below other heat sources; keep the package copper keepout zone at least 5 mm clear of inductors and other dissipating devices.
Use NSMD (non-solder-mask-defined) pads with under-bump metallization for the 12 WLP bumps - SMD pads risk bridging. Match pad diameter to the package land pattern in the mechanical drawing (typically 0.25 mm dia). Use a reflow profile with peak temperature 245 C +/-5 C and soak 150-200 C for 60-90 s; exceeding 260 C peak risks Cu-UBM dissolution. Place input/output capacitors (10 uF ceramic + 0.1 uF) within 3 mm of the IN and OUT bumps to minimize parasitic inductance during short events.
Do not exceed the 5.5 V absolute maximum on IN - transients above 5.5 V will damage the IC's internal N-FET gate oxide. Do not omit the SET resistor; leaving SET floating forces ILIM to its maximum (6 A), disabling fault protection. For latchoff mode parts (MAX20314/MAX20316), cycle EN or power-IN to reset - a continuous overcurrent event will keep the latch engaged and may overheat upstream components; always check FLAG logic after a fault.
Información de cumplimiento
RoHS compliant per ADI product page. Not AEC-Q100 qualified - the MAX20313 is targeted at consumer/mobile/portable applications, not automotive.
