- Product Introduction
Product Attributes
|
TYPE |
DESCRIPTION |
|---|---|
|
Category |
Integrated Circuits (ICs) Power Management (PMIC) Power Distribution Switches, Load Drivers |
|
Mfr |
Texas Instruments |
|
Series |
- |
|
Part Status |
Active |
|
Switch Type |
General Purpose |
|
Number of Outputs |
1 |
|
Ratio - Input:Output |
1:1 |
|
Output Configuration |
High Side |
|
Output Type |
N-Channel |
|
Interface |
On/Off |
|
Voltage - Load |
2.7V ~ 5.5V |
|
Voltage - Supply (Vcc/Vdd) |
Not Required |
|
Current - Output (Max) |
500mA |
|
Rds On (Typ) |
70mOhm |
|
Input Type |
Non-Inverting |
|
Features |
- |
|
Fault Protection |
Current Limiting (Fixed), Over Temperature, UVLO |
|
Operating Temperature |
-40°C ~ 85°C (TA) |
|
Mounting Type |
Surface Mount |
|
Supplier Device Package |
8-SOIC |
|
Package / Case |
8-SOIC (0.154", 3.90mm Width) |
|
Base Product Number |
TPS2051 |
General description
The TPS20xxB power-distribution switches areintended for applications where heavy capacitiveloads and short circuits are likely to be encountered.These devices incorporates 70mΩ N-channelMOSFET power switches for power-distributionsystems that require multiple power switches ina single package. Each switch is controlled by alogic enable input. Gate drive is provided by aninternal charge pump designed to control the powerswitch rise times and fall times to minimize currentsurges during switching. The charge pump requiresno external components and allows operation fromsupplies as low as 2.7V.When the output load exceeds the current-limitthreshold or a short is present, the device limits theoutput current to a safe level by switching into aconstant-current mode, pulling the overcurrent ( OCx)logic output low. When continuous heavy overloadsand short circuits increase the power dissipation inthe switch, causing the junction temperature to rise,a thermal protection circuit shuts off the switch toprevent damage. Recovery from a thermal shutdownis automatic once the device has cooled sufficiently.Internal circuitry ensures that the switch remainsoff until valid input voltage is present. This powerdistribution switch is designed to set current limit at1A (typical).
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