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Details for TPS22949ADRGR by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
LOAD SWITCH CURRENT LIMITED 8SON
TPS22949ADRGR image

TPS22949ADRGR by Texas Instruments

LOAD SWITCH CURRENT LIMITED 8SON
Features
1.8-V Compatible Control Input Threshold
ESD Performance Tested Per JESD 22 u2013 3500 V Human Body Model (A114-B, Class II) u2013 1000 V Charged Device Model (C101)
Integrated Current Limiter u2013 Input Voltage Range: 1.62 V to 4.5 V u2013 Low ON-Resistance u2013 rON = 300-mu2126 at VIN = 4.5 V u2013 rON = 350-mu2126 at VIN = 3.3 V u2013 rON = 400-mu2126 at VIN = 2.5 V u2013 rON = 600-mu2126 at VIN = 1.8 V u2013 Integrated 100-mA Minimum Current Limit u2013 Undervoltage Lockout u2013 Fast-Current Limit Response Time u2013 Integrated Fault Blanking and Auto Restart
Integrated Low-Noise RF LDO u2013 Input Voltage Range: 1.62 V to 4.5 V u2013 Low Noise: 50 u03bcVrms (10 Hz to 100 kHz) u2013 80-dB VIN PSRR (10 Hz to 10 kHz) u2013 Fast Start-Up Time: 130 u03bcs u2013 Low Dropout 100 mV at Iload =100 mA u2013 Integrated Output Discharge u2013 Stable With 2.2-u03bcF Output Capacitor
Stable Without Current Limiter Output Capacitor (TPS22949A Only)
Tiny 8-Terminal YZP Package (1.9 mm u00d7 0.9 mm,
Part Information
TPS22949ADRGR image
RoHS Compliant
Description
The TPS22949 and TPS22949A are devices that provide protection to systems and loads in highcurrent conditions. The device contains a 500-mΩ current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 4.5 V as well as a low-dropout (LDO) regulator with a fixed output voltage of 1.8 V. The switch is controlled by an on/off input (EN1), which can interface directly with low-voltage control signals. When the switch current reaches the maximum limit, the TPS22949/TPS22949A operates in a constant-current mode to prohibit excessive currents from causing damage. If the constant current condition persists after 12 ms, these devices shut off the switch and pull the fault signal pin (OC) low. The TPS22949/TPS22949A has an auto-restart feature that turns the switch on again after 70 ms if the EN1 pin is still active. The output of the current limiter is internally connected to an RF low-dropout (LDO) regulator that offers good AC performance with very low ground current, good power supply rejection ratio (PSRR), low noise, fast start-up, and excellent line and load transient response. The output of the regulator is stable with ceramic capacitors. This LDO uses a precision voltage reference and feedback loop to achieve overall accuracy of 2% over all load, line, process, and temperature variations.
Specifications
Power Load Switch Type:
High Side
Input Voltage:
4.5V
Current Limit:
150mA
On State Resistance:
0.4ohm
Distribution Switch Case Style:
SON
No. of Pins:
8Pins
Thermal Protection:
Yes
On / Enable Input Polarity:
Active High
No. of Outputs:
2Outputs
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 2 - 1 year
SVHC:
No SVHC (27-Jun-2018)
Base Number:
22949
Internal Switch:
No
Operating Temperature Range:
-40°C to +85°C
Power Dissipation Pd:
1.525W
Termination Type:
Surface Mount Device
Alternate Descriptions
Load Switch 8-Pin WSON EP T/R Avnet America
Load Switch 8-Pin WSON EP T/R Avnet Europe