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TPS2559DRCR

Pwr Switch, 2.5-6.5V, 13mOhm, 1.2-4.7A Adj CL, VSON-10

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Pieza del fabricante：

TPS2559DRCR

Paquete：

VSON-10 (3.00 x 3.00 x 0.90 mm, 0.5mm pitch, exposed pad)

Marca：

Categorías de productos：

Circuitos integrados lineales analógicos, Circuitos integrados IC

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Descripción

Productos

The TPS2559DRCR from Texas Instruments is a 2.5-6.5V precision adjustable current-limited power distribution switch with 13mOhm RDS(on), 1.2-4.7A adjustable limit, and 10-pin VSON package.

Especificaciones

Tipo	Precision Adjustable Current-Limited Power-Distribution Switch
Operating Voltage	2.5V to 6.5V
Continuous Output Current	Up to 5.5A
Current Limit Range	1.2A to 4.7A (adjustable, +/-4.4% at 4.7A)
RDS(on)	13 mOhm (typical)
Short-Circuit Shutoff	3.5 us (typical)
Standby Current	2 uA (max)
Soft Start	Built-in
ESD Protection	8kV HBM / 15kV IEC system-level
Fault Output	Active-low open-drain
Paquete	VSON-10 (DRC, 3x3mm)
Temperatura de funcionamiento	-40C to +125C

Características

13mOhm high-side N-channel MOSFET
Adjustable current limit: 1.2A to 4.7A (+/-4.4%)
3.5us short-circuit shutoff
Built-in soft-start for capacitive loads
2uA max standby current
8kV/15kV system-level ESD
Active-high enable input

Aplicaciones

USB ports and hubs
Digital TV and set-top boxes
VoIP phones
Heavy capacitive load driving

Introducción del producto:TPS2559DRCR Presentación del producto

The TPS2559DRCR from Texas Instruments is a precision adjustable current-limited power-distribution switch in a 10-pin 3x3mm VSON package with exposed thermal pad. The DRC suffix denotes the VSON-10 package, and R indicates tape and reel. The device integrates a 13mOhm N-channel high-side MOSFET with a precision current limiting circuit that can be programmed from 1.2A to 4.7A using a single external resistor from the ILIM pin to ground. The +/-4.4% accuracy at 4.7A current limit is significantly better than typical load switches, making the TPS2559 suitable for USB applications where the current must be precisely controlled to meet USB specifications. The 3.5us short-circuit shutoff time prevents damage from fault conditions by quickly disconnecting the output when a short is detected. The built-in soft-start controls the output rise time to limit inrush current when driving heavy capacitive loads such as downstream USB devices with large bypass capacitors. The FAULT open-drain output asserts low during overcurrent or overtemperature conditions, allowing system monitoring. The 2uA maximum standby current minimizes battery drain when the switch is disabled. The 8kV HBM and 15kV IEC system-level ESD ratings provide robust protection for externally exposed ports.

Principio de funcionamiento:TPS2559DRCR Principio de funcionamiento

The TPS2559DRCR uses a high-side N-channel MOSFET as the power switch element, driven by an internal charge pump that generates a gate voltage above the input supply to fully enhance the MOSFET. The 13mOhm RDS(on) is achieved with a large MOSFET geometry in the exposed-pad VSON package for thermal dissipation. The current limiting circuit measures the load current by sensing the voltage across the MOSFET during the on-state (RDS(on) sensing) or through a dedicated sense element. When the current exceeds the threshold set by the RILIM resistor, the device enters a constant-current mode where the gate drive is reduced to maintain the output current at the limit value. If the overload persists and the junction temperature rises, the thermal shutdown circuit turns off the MOSFET. The 3.5us short-circuit shutoff uses a fast comparator that detects the rapid current rise during a hard short and disables the MOSFET before the current reaches destructive levels. The soft-start circuit controls the gate drive ramp-up rate, limiting dV/dt at the output and the associated inrush current (I = C x dV/dt). The reverse current blocking feature prevents current from flowing from OUT to IN when the switch is disabled, protecting the upstream supply.

Descripción de la clavija:TPS2559DRCR Definición y funciones de las clavijas

Pin	Nombre	Tipo	Función
1	GND	Potencia	Ground (connect to exposed pad)
2,3,4	EN	Potencia	Input voltage (2.5-6.5V)
5	ES	Entrada	Enable (active-high)
6	ILIM	Entrada	Current limit programming resistor
7	FALLO	Salida	Fault indicator (open-drain, active-low)
8	NC	-	Sin conexión
9,10	OUT	Potencia	Output to load
Tampón	GND	Potencia	Exposed thermal pad (ground)

Application Scenarios:In which products and applications isTPS2559DRCR usado

USB 2.0 port power switch with 500mA current limit set by RILM, 3.5us short-circuit protection, and 15kV IEC ESD for externally exposed connector
Multi-port USB hub with TPS2559 per port, FAULT outputs wire-ORed to hub controller for overcurrent detection and port power management
5V set-top box peripheral power with 2A current limit and soft-start for 100uF downstream capacitor to limit inrush to 200mA

Alternative Models:What chips are recommended as replacements for TPS2559DRCR

Fabricante	Número de pieza	Paquete	Notas
TI	TPS2557DRCR	VSON-10	Lower current limit range
TI	TPS2553DBVR	SOT-23-5	1.2A, smaller package
TI	TPS25200DRVR	SON-6	With OVP protection
onsemi	NCP380LAUAJAAT1G	UDFN-8	Adjustable CL, similar function
TI	TPS259521DSGR	WSON-8	eFuse with OVP, more protection