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TPS2062DR

2-ch 1A power switch, 70mOhm, 2.7-5.5V, current limit, SOIC-8

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Pieza del fabricante：

TPS2062DR

Paquete：

SOIC-8 (3.9 x 4.9 x 1.58 mm)

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Descripción

Productos

The TPS2062DR from Texas Instruments is a dual-channel current-limited power distribution switch in an 8-pin SOIC package. Each channel incorporates a 70mOhm N-channel MOSFET rated for 1A continuous current with 1.5A current limit, operating from 2.7V to 5.5V. Designed for USB and other hot-plug applications requiring short-circuit and overload protection.

Especificaciones

Canales 2
ON Resistance 70 mOhm per channel
Continuous Current 1A per channel
Current Limit 1.5A typical (1.1A min, 1.9A max)
Input Voltage 2.7V to 5.5V
Rise Time 0.6 ms typical
Standby Current 1 uA max
Enable Logic Active-low (EN1, EN2)
Fault Output OC1, OC2 (open-drain, active low)
UVLO Threshold 2.0V typical
Bidirectional Switch Yes
Thermal Protection Yes (135C min, auto-retry)
Temperatura de funcionamiento -40 to +125 C (junction)
Paquete SOIC-8 (3.9 x 4.9 mm)
Status Activo

Características

  • 70mOhm high-side N-channel MOSFET switch
  • 1A continuous, 1.5A current limit per channel
  • 2.7-5.5V operating voltage
  • 0.6ms soft-start rise time
  • Undervoltage lockout
  • Thermal shutdown with auto-retry
  • Open-drain overcurrent fault output
  • 1uA standby current
  • Bidirectional switch
  • UL listed (File E169910)

Aplicaciones

  • USB power distribution
  • Hot-plug power switching
  • Heavy capacitive load driving
  • Short-circuit protected power rails

The TPS2062DR from Texas Instruments is a dual-channel current-limited power distribution switch in an 8-pin SOIC package. The D denotes SOIC-8 package, R denotes tape and reel (2500 pcs/reel). Each channel incorporates a 70mOhm N-channel MOSFET power switch controlled by active-low enable inputs (EN1, EN2). The internal charge pump generates gate drive voltage from supplies as low as 2.7V without external components. When an overcurrent condition occurs, the device switches to constant-current mode at 1.5A typical and asserts the corresponding open-drain OC output after an 8ms deglitch filter. Thermal protection disables the switch at approximately 135C junction temperature with 10C hysteresis for auto-retry. The 0.6ms soft-start rise time limits inrush current into heavy capacitive loads. The bidirectional switch characteristic allows current flow in both directions when enabled. UVLO keeps the switch off until input voltage exceeds 2.0V. The device is UL listed under file E169910.

The TPS2062DR operates through five subsystems: (1) Power Switch: Each channel has a 70mOhm N-channel MOSFET connecting IN to OUT. An internal charge pump generates the gate voltage above the source to fully enhance the MOSFET. The charge pump operates from 2.7V minimum input. (2) Current Limiting: When load current exceeds the threshold (1.5A typical), the device switches from constant-voltage to constant-current mode, limiting output current while reducing output voltage. The 8ms deglitch timer prevents false OC assertions during normal transients like capacitive load startup. (3) Thermal Protection: Individual thermal sensors monitor each channel. When junction temperature exceeds approximately 135C during an overcurrent event, the channel is disabled. After cooling by approximately 10C, the channel automatically retries. (4) Enable Control: Active-low enable inputs (EN1, EN2) control each channel independently. When disabled, the MOSFET is off and supply current drops to 1uA maximum. (5) UVLO: The undervoltage lockout circuit keeps both switches off until VIN exceeds 2.0V, preventing undefined operation during power-up.

Pin Nombre Tipo Descripción
1 GND Potencia Suelo
2 EN Potencia Input voltage (2.7-5.5V)
3 EN1 Entrada Channel 1 enable (active low)
4 OC1 Salida Channel 1 overcurrent fault (open-drain)
5 OUT1 Salida Channel 1 switch output
6 OUT2 Salida Channel 2 switch output
7 OC2 Salida Channel 2 overcurrent fault (open-drain)
8 EN2 Entrada Channel 2 enable (active low)
  • Dual-port USB 2.0 power switch with 1A per channel, OC fault reporting, and 0.6ms soft-start for hot-plug
  • 5V peripheral power switching with active-low MCU enable, thermal auto-retry, and 1uA standby
  • 3.3V and 5V rail sequencing using bidirectional switch characteristic for ORing redundant supplies
  • Short-circuit protected load switch for industrial I/O modules with UL listing for safety compliance
Modelo Fabricante Canales Current Notas
TPS2062ADR TI 2 1A Tighter current limit (1.6A typ)
TPS2061DR TI 2 1A Active-high enable
TPS2065DR TI 2 2A Higher current version
AP2145SG-13 Diodos Inc 2 1A Pin-compatible alternative
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