TPS2559 Texas instruments

TPS2559

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TPS2559

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Описание

The TPS2559 power-distribution switch is intended for applications where a low resistance, precision current limit switch is required or heavy capacitive loads are encountered. The TPS2559 provides up to 5.5 A of continuous load current with a precise current limit set by a single resistor to ground. Output current is maintained at a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. During overload events the output current is limited to the level set by R(ILIM). If a persistent overload occurs, the device goes into thermal shutoff to prevent damage to the TPS2559.The power-switch rise and fall times are controlled to minimize current surges during turn on or off. The FAULT logic output asserts low during overcurrent or overtemperature conditions.

Operating range: 2.5 V to 6.5 V
Adjustable 1.2-A to 4.7-A I_(LIMIT) (±4.4% at 4.7 A)
Short-circuit shutoff (typical): 3.5 µs
High-side MOSFET: 13 mΩ
Maximum standby supply current: 2 µA
Built-in soft-start
System-level ESD capable: 8 kV / 15 kV
UL 2367 recognition pending

Product type	Adjustable current limit, Power switch
Vin (min) (V)	2.5
Vin (max) (V)	6.5
Continuous current (max) (A)	5
Current limit (A)	1.2 to 4.7
Operating temperature range (°C)	-40 to 125
Enable	Active High
Number of switches	1
Current limit accuracy at 1 A	0.04
Rating	Catalog