Key facts
- Brand
- Texas Instruments
- Model
- TPS2042
- Industry
- Industrial
- Documents
- 4
- Languages
- EN
- Last added
- 2012-08-01
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Texas Instruments TPS2042, TPS2052 Dual Power-Distribution Switches Datasheet
The TPS2042 and TPS2052 are dual power-distribution switches designed for applications involving heavy capacitive loads and short circuits. Each device incorporates two 135-mΩ N-channel MOSFET high-side power switches controlled by logic enable inputs compatible with 5-V and 3-V logic. An internal charge pump drives the gate voltage to minimize current surges during switching, requiring no external components and allowing operation from supplies as low as 2.7 V.
These switches feature built-in protection mechanisms, including overcurrent limiting that switches into a constant-current mode and thermal protection that shuts off the switch if the junction temperature rises too high. The devices are available in 8-pin SOIC and PDIP packages and operate over an ambient temperature range of -40°C to 85°C.
Texas Instruments TPS2042 specifications
| On-state resistance (5V) | 135 mΩ maximum |
|---|---|
| Continuous output current | 500 mA |
| Short-circuit current limit | 0.9 A |
| Operating temperature range | -40°C to 85°C |
| Input voltage range | 2.7 V to 5.5 V |
| ESD protection (Human Body Model) | 2 kV |
Source: Texas Instruments TPS2042, TPS2052 Dual Power-Distribution Switches Datasheet
All Texas Instruments TPS2042 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- Texas Instruments TPS2042, TPS2052 Dual Power-Distribution Switches Datasheet 26 p
- Texas Instruments TPS2042, TPS2052 Dual Power-Distribution Switches Datasheet 24 p
- Texas Instruments TPS2042/TPS2052 Dual Power-Distribution Switches Datasheet 28 p
- Texas Instruments TPS2042/TPS2052 Dual Power-Distribution Switches Datasheet 26 p
Questions answered in these manuals
What is the maximum continuous current per channel?
The device supplies a minimum of 500 mA per switch.
From: Texas Instruments TPS2042, TPS2052 Dual Power-Distribution Switches Datasheet
What is the short-circuit current limit?
The switches are designed to limit the load at 0.9 A.
From: Texas Instruments TPS2042, TPS2052 Dual Power-Distribution Switches Datasheet
What is the difference between the TPS2042 and TPS2052 enable logic?
The TPS2042 uses an active-low enable input, whereas the TPS2052 uses an active-high enable input.
From: Texas Instruments TPS2042, TPS2052 Dual Power-Distribution Switches Datasheet
Do these switches require external components for the charge pump?
No, the internal charge pump requires no external components and allows operation from supplies as low as 2.7 V.
From: Texas Instruments TPS2042, TPS2052 Dual Power-Distribution Switches Datasheet
What logic level enables the TPS2042 power switch?
A logic low on EN1 (or EN2) turns the power switch on, while a logic high disables it.
From: Texas Instruments TPS2042/TPS2052 Dual Power-Distribution Switches Datasheet
How does the device protect against overheating?
When the die temperature reaches about 140 °C, the internal thermal sense circuit shuts off the affected switch and automatically restarts it after the temperature drops about 20 °C.
From: Texas Instruments TPS2042/TPS2052 Dual Power-Distribution Switches Datasheet