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Manufacturer Part #
L7981ATR
L7981 Series 28 V 3 A 1 MHz Step Down Switching Regulator SMT - HSOP-8
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| Mfr. Name: | STMicroelectronics | ||||||||||
| Standard Pkg: | Product Variant Information section Available PackagingPackage Qty:2500 per Reel Package Style:HSOP-8 Mounting Method:Surface Mount | ||||||||||
| Date Code: | 2413 | ||||||||||
STMicroelectronics L7981ATR - Product Specification
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STMicroelectronics L7981ATR - Technical Attributes
| Topology: | Buck |
| Input Voltage: | 4.5V to 28V |
| Output Current-Max: | 3A |
| Output Voltage Range: | 0.6V to 28V |
| Output Type: | Adjustable |
| Switching Frequency-Max: | 1MHz |
| Operating Temp Range: | -40°C to +150°C |
| Duty Cycle-Max: | 100% |
| No. of Outputs: | 1 |
| Quiescent Current: | 2.4mA |
| Storage Temperature Range: | -55°C to +150°C |
| Package Style: | HSOP-8 |
| Mounting Method: | Surface Mount |
Features & Applications
The L7981ATR is a step down switching regulator with 3.7 A (minimum) current limited embedded power MOSFET, so it si able to deliver up to 3 A current to the load depending on the application conditions.
The input voltage can range from 4.5 V to 28 V, while the output voltage can be set starting from 0.6 V to VIN. Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.
Features:
- 3 A DC output current
- 4.5 V to 28 V input voltage
- Output voltage adjustable from 0.6 V
- 250 kHz switching frequency, programmable up to 1 MHz
- Internal soft-start and enable
- Low dropout operation: 100% duty cycle
- Voltage feed-forward
- Zero load current operation
- Overcurrent and thermal protection
- VFQFPN3x3-8L and HSOP8 package
Applications:
- Consumer: STB, DVD, DVD recorder, car audio, LCD TV and monitors
- Industrial: PLD, PLA, FPGA, chargers
- Networking: XDSL, modems, DC-DC modules
- Computer: Optical storage, hard disk drive, printers, audio/graphic cards
- Suitable for LED driving
Available Packaging
Package Qty:
2500 per Reel
Package Style:
HSOP-8
Mounting Method:
Surface Mount