TPS2295x 5.7 V, 5 A, 14 mΩ On-Resistance Load Switch
1 Features
- Integrated Single Channel Load Switch
- Input Voltage Range: 0.7 V to 5.7 V
- RON Resistance
- RON = 14 mΩ at VIN = 5 V (VBIAS = 5 V)
- 5-A Maximum Continuous Switch Current
- Adjustable Undervoltage Lockout Threshold (UVLO)
- Adjustable Voltage Supervisor with
Power Good (PG) Indicator - Adjustable Output Slew Rate Control
- Enhanced Quick Output Discharge Remains Active after Power is Removed (TPS22954 Only)
- 15 Ω (Typ) Discharges 100 µF Within 10 ms
- Reverse Current Blocking when Disabled (TPS22953 Only)
- Automatic Restart after Supervisor Fault Detection When Enabled
- Thermal Shutdown
- Low Quiescent Current ≤ 50 µA
- SON 10-pin Package with Thermal Pad
- ESD Performance Tested Per JESD 22
- 2-kV HBM and 750-V CDM
2 Applications
- Solid State Drives
- Embedded and Industrial PC
- Ultrabook™ and Notebooks
- Desktops
- Servers
- Telecom Systems
3 Description
The TPS22953/54 are small, single channel load switches with controlled turn on. The devices contain a N-channel MOSFET that can operate over an input voltage range of 0.7 V to 5.7 V and can support a maximum continuous current of 5 A.
The integrated adjustable undervoltage lockout (UVLO) and adjustable power good (PG) threshold provides voltage monitoring as well as robust power sequencing. The adjustable rise time control of the device greatly reduces inrush current for a wide variety of bulk load capacitances, thereby reducing or eliminating power supply droop. The switch is independently controlled by an on and off input (EN), which is capable of interfacing directly with low-voltage control signals. A 15-Ω on-chip load is integrated into the device for a quick discharge of the output when switch is disabled. The enhanced Quick Output Discharge (QOD) remains active for short time after power is removed from the device to finish discharging the output.
The TPS22953/54 are available in small, space-saving 10-SON packages with integrated thermal pad allowing for high power dissipation. The device is characterized for operation over the free-air temperature range of –40°C to +105°C.
Device Information(1)
| PART NUMBER | PACKAGE (PIN) | BODY SIZE (NOM) |
|---|---|---|
| TPS2295x | WSON (10) | 2.00 mm x 2.00 mm |
| WSON (10) | 2.00 mm x 3.00 mm |
- For all available packages, see the orderable addendum at the end of the datasheet.
Simplified Schematic
4 Revision History
Changes from C Revision (July 2015) to D Revision
- Added Power Sequencing section. Go
Changes from B Revision (May 2015) to C Revision
- Changed inverter part number from SN74LVC1G07 to SN74LVC1G06 in the Break-Before-Make Power MUX Schematic.Go
Changes from A Revision (April 2015) to B Revision
- Updated pin names and graphics throughout the document. Go
Changes from * Revision (March 2015) to A Revision
- Initial release of full version. Go
5 Device Comparison Table
| Device | Quick Output Discharge | Reverse Current Blocking | Package (Pin) | Body Size | Pin Pitch |
|---|---|---|---|---|---|
| TPS22954 | Yes | No | DSQ (10) | 2.00 mm x 2.00 mm | 0.4 mm |
| DQC (10) | 2.00 mm x 3.00 mm | 0.5 mm | |||
| TPS22953 | No | Yes | DSQ (10) | 2.00 mm x 2.00 mm | 0.4 mm |
| DQC (10) | 2.00 mm x 3.00 mm | 0.5 mm |
6 Pin Configuration and Functions
Pin Functions
| PIN(1) | I/O | DESCRIPTION | |
|---|---|---|---|
| NO. | NAME | ||
| 1 | IN | I | Switch input. Bypass this input with a ceramic capacitor to GND |
| 2 | |||
| 3 | BIAS | I | Bias pin and power supply to the device |
| 4 | EN | I | Active high switch enable/disable input. Also acts as the input UVLO pin. Use external resistor divider to adjust the UVLO level. Do not leave floating. |
| 5 | GND | — | Device ground |
| 6 | CT | O | VOUT slew rate control. Place ceramic cap from CT to GND to change the VOUT slew rate of the device and limit the inrush current. CT Capacitormust be rated to 25 V or higher |
| 7 | PG | O | Power good. This pin is open drain which will pull low when the voltage on EN and/or SNS is below their respective VIL level |
| 8 | SNS | I | Sense pin. Use external resistor divider to adjust the power good level. Do not leave floating |
| 9 | OUT | O | Switch output |
| 10 | |||
| — | Thermal Pad | — | Exposed thermal pad. Tie to GND |
