TPS22951

Name: TPS22951
Brand: TI
SKU: TPS22951
Price: 0.22 USD

現行

具電流限制和電源良好輸的 5.3-V、0.3-A、565-mΩ 負載開關

立即訂購

產品規格表

document-pdfAcrobat TPS22951 Current-Limited 1-Ω Smart-Load Switch datasheet (Rev. D) (英文) PDF | HTML

TPS22951

現行

產品規格表

立即訂購

產品詳細資料

Number of channels

1

Vin (min) (V)

2.8

Vin (max) (V)

5.3

Imax (A)

0.6

Ron (typ) (mΩ)

565

Shutdown current (ISD) (typ) (µA)

1

Quiescent current (Iq) (typ) (µA)

100

Soft start

Fixed Rise Time

Current limit type

Fixed

Features

Power good signal, Short circuit protection, Thermal shutdown

Rating

Catalog

Operating temperature range (°C)

-40 to 85

FET

Internal

Device type

Load switches

Function

Power good signal, Short circuit protection, Thermal shutdown

Number of channels

1

Vin (min) (V)

2.8

Vin (max) (V)

5.3

Imax (A)

0.6

Ron (typ) (mΩ)

565

Shutdown current (ISD) (typ) (µA)

1

Quiescent current (Iq) (typ) (µA)

100

Soft start

Fixed Rise Time

Current limit type

Fixed

Features

Power good signal, Short circuit protection, Thermal shutdown

Rating

Catalog

Operating temperature range (°C)

-40 to 85

FET

Internal

Device type

Load switches

Function

Power good signal, Short circuit protection, Thermal shutdown

1-Ω P-Channel MOSFET
300-mA Continuous Source Current
Thermal and Short-Circuit Protection
600-mA Current Limit
Operating Range: V_CC = 2.8 V to 5.3 V
41-µs Typical Rise Time
10-µA Maximum Standby Supply Current
Ambient Temperature Range: –40°C to +85°C
ESD Performance Tested Per JESD 22
- 4000-V Human-Body Model (HBM)
- 400-V Machine Model (MM)
- 1000-V Charged-Device Model (CDM)

1-Ω P-Channel MOSFET
300-mA Continuous Source Current
Thermal and Short-Circuit Protection
600-mA Current Limit
Operating Range: V_CC = 2.8 V to 5.3 V
41-µs Typical Rise Time
10-µA Maximum Standby Supply Current
Ambient Temperature Range: –40°C to +85°C
ESD Performance Tested Per JESD 22
- 4000-V Human-Body Model (HBM)
- 400-V Machine Model (MM)
- 1000-V Charged-Device Model (CDM)

The TPS22951 smart-load switch is intended for applications where heavy capacitive loads and short circuits are likely to be encountered. This device incorporates a 1-Ω P-channel MOSFET power switch for power distribution. The switch is controlled by a logic enable (EN) input and an accessory detect (DET) pin. The switch is active when EN is high and DET is low. The switch is disabled if EN is low or DET is high. A low power state is achieved by driving EN low.

When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by increasing the on resistance of the power switch. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal-protection circuit shuts off the switch to prevent damage. The device recovers from a thermal shutdown once the device has cooled sufficiently, but the switch remains OFF until EN is toggled. This smart-load switch is designed to set current limit at 600 mA maximum.

The TPS22951 smart-load switch is intended for applications where heavy capacitive loads and short circuits are likely to be encountered. This device incorporates a 1-Ω P-channel MOSFET power switch for power distribution. The switch is controlled by a logic enable (EN) input and an accessory detect (DET) pin. The switch is active when EN is high and DET is low. The switch is disabled if EN is low or DET is high. A low power state is achieved by driving EN low.

When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by increasing the on resistance of the power switch. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal-protection circuit shuts off the switch to prevent damage. The device recovers from a thermal shutdown once the device has cooled sufficiently, but the switch remains OFF until EN is toggled. This smart-load switch is designed to set current limit at 600 mA maximum.

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