5.5V, 1.5A, 90m? self-protected load switch with controlled rise time 6-SC70 -40 to 105 The TPS22919 is a 6-pin SOT-23 device with a 5.5-V, 1.5-A load switch. This article mainly introduces Features, Pinout, Datasheet and other detailed information about Texas Instruments TPS22919DCKR.
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Mar 31, 2022
Lance Lindsay
What is a load switch
5.5V, 1.5A, 90m? self-protected load switch with controlled rise time 6-SC70 -40 to 105
The TPS22919 is a 6-pin SOT-23 device with a 5.5-V, 1.5-A load switch. This article mainly introduces Features, Pinout, Datasheet and other detailed information about Texas Instruments TPS22919DCKR.
TPS22919DCKR
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.2 | $2.2 |
| 10+ | $1.49 | $14.9 |
| 25+ | $1.316 | $32.9 |
| 100+ | $1.122 | $112.2 |
| 250+ | $1.03 | $257.5 |
| 500+ | $0.9744 | $487.2 |
| 1000+ | $0.9288 | $928.8 |
The TPS22919DCKR is a 6-pin SOT-23 device with a 5.5-V, 1.5-A load switch. The device uses a low resistance N-channel MOSFET to reduce voltage drop for low voltage and high current rails, lowering the drop-out voltage across the device.
A digital input capable of directly connecting with low-voltage control signals controls the switch ON state. A Smart Pull Down is utilized to keep the ON pin from floating until the system sequence is complete when power is initially delivered. The Smart Pull Down will be disconnected once the pin is intentionally driven high (>VIH) to prevent unnecessary power loss.
The TPS22919DCKR load switch is also self-protected, which means it will protect itself in the event of a short circuit on the device's output. It also supports thermal shutdown to prevent overheating damage.
TPS22919DCKR is offered in a standard SC-70 package with a junction temperature range of –40°C to 125°C for operation.
The following figure is TPS22919DCKR Pinout.
Pinout
| Pin Number | Pin Name | Description |
| 1 | IN | Switch input. |
| 2 | GND | Device ground. |
| 3 | ON | Active high switch control input. Do not leave floating. |
| 4 | NC | No connect pin, leave floating. |
| 5 | QOD | Quick Output Discharge pin. This functionality can be enabled in one of three ways. • Placing an external resistor between VOUT and QOD • Tying QOD directly to VOUT and using the internal resistor value (RPD) • Disabling QOD by leaving pin floating |
| 6 | VOUT | Switch output. |
The TPS22919DCKR CAD Model is shown as follows.
Symbol
Footprint
3D Model
• Input operating voltage range (VIN): 1.6 V to 5.5 V
• Maximum continuous current (IMAX): 1.5 A • On-Resistance (RON):
– 5-V VIN: 89 mΩ (typical)
– 3.6-V VIN: 90 mΩ (typical)
– 1.8-V VIN: 105 mΩ (typical)
• Output short protection (ISC): 3 A (typical)
• Low power consumption:
– ON state (IQ): 8 µA (typical)
– OFF state (ISD): 2 nA (typical)
• Smart ON pin pull down (RPD):
– ON ≥ VIH (ION): 100 nA (maximum)
– ON ≤ VIL (RPD): 530 kΩ (typical)
• Slow Turn ON timing to limit inrush current (tON):
– 5.0 V Turn ON time (tON): 1.95 ms at 3.2 mV/μs
– 3.6 V Turn ON time (tON): 1.75 ms at 2.7 mV/μs
– 1.8 V Turn ON time (tON): 1.5 ms at 1.8 mV/μs
• Adjustable output discharge and fall time:
– Internal QOD resistance = 24 Ω (typical)
Texas Instruments TPS22919DCKR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments TPS22919DCKR.
| Product Attribute | Attribute Value | |
|---|---|---|
| Factory Lead Time | 6 Weeks | |
| Mounting Type | Surface Mount | |
| Package / Case | 6-TSSOP, SC-88, SOT-363 | |
| Surface Mount | YES | |
| Operating Temperature | -40°C~125°C TA | |
| Packaging | Tape & Reel (TR) | |
| JESD-609 Code | e3 | |
| Pbfree Code | yes | |
| Part Status | Active | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Number of Terminations | 6Terminations | |
| Terminal Finish | Matte Tin (Sn) |
| Product Attribute | Attribute Value | |
|---|---|---|
| Terminal Position | DUAL | |
| Terminal Form | GULL WING | |
| Number of Functions | 1Function | |
| Terminal Pitch | 0.65mm | |
| Base Part Number | TPS22919 | |
| JESD-30 Code | R-PDSO-G6 | |
| Number of Outputs | 1Output | |
| Output Type | N-Channel | |
| Interface | On/Off | |
| Output Configuration | High Side | |
| Voltage - Supply (Vcc/Vdd) | Not Required | |
| Input Type | Non-Inverting |
| Product Attribute | Attribute Value | |
|---|---|---|
| Switch Type | General Purpose | |
| Ratio - Input:Output | 1:1 | |
| Voltage - Load | 1.6V~5.5V | |
| Fault Protection | Short Circuit | |
| Output Peak Current Limit-Nom | 3A | |
| Rds On (Typ) | 89m Ω | |
| Built-in Protections | TRANSIENT; OVER CURRENT; THERMAL | |
| Output Current Flow Direction | SINK | |
| Features | Load Discharge, Slew Rate Controlled | |
| Length | 2mm | |
| RoHS Status | ROHS3 Compliant |
The following figure is TPS22919DCKR Functional Block Diagram.
Functional Block Diagram
The following figure is TPS22919DCKR Simplified Schematic.
Simplified Schematic
The TPS22919DCKR Test Circuit is shown as follows.
Test Circuit
(1) The control signal's rise and fall times are 100 nanoseconds.
(2) The time constant at the load affects the turn-off and fall times. When the switch is deactivated on the TPS22919 devices, the internal pull-down resistance QOD is enabled. (RQOD + RPD,QOD || RL) *CL is the time constant.
All traces must be as brief as possible for optimal performance. In order to reduce the impacts of parasitic trace inductances on normal operation, the input and output capacitors must be located close to the device. The parasitic electrical effects are reduced by using large traces for VIN, VOUT, and GND.
Layout
• Personal electronics
• Set-top box
• HDTV
• Multi function printer
The TPS22919DCKR Package is shown as follows.
Package
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