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L4978
DC-DC Switching Buck (Step Down) Regulator, Adjustable, 8V-55Vin, 3.3V-50Vout, 2Aout, DIP-8
- Manufacturer:
- STMICROELECTRONICS STMICROELECTRONICS
- Manufacturer Part No:
- L4978
- Order Code:
- 1077138
- Technical Datasheet:
- L4978 Datasheet
Product Overview
The L4978 is a step-down monolithic power Switching Regulator delivering 2A at a voltage between 3.3 and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25R) to obtain very high efficiency and high switching speed. A switching frequency up to 300kHz is achievable. A wide input voltage range between 8 to 55V and output voltage regulated from 3.3 to 50V cover the majority of today's applications. Features of this new generation of DC-to-DC converter include pulse-by-pulse current limit, hiccup mode for short-circuit protection, voltage feed-forward regulation, soft-start, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown.
- Protection against feedback disconnection
- Inhibit for zero current consumption
- Zero load current operation
- Internal current limiting (pulse-by pulse and hiccup mode)
- Precise 3.3V (±1%) internal reference voltage
Applications
Power Management
Product Information
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- :
- Buck (Step Down)
- :
- 8V
- :
- 55V
- :
- 1Outputs
- :
- DIP
- :
- 8Pins
- :
- 2A
- :
- 3.3V
- :
- 50V
- :
- 300kHz
- :
- 150°C
- :
- -
- :
- -
- :
- -
Technical Docs (3)
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|---|---|---|
| 1+ | $5.06 ($5.82) | ( ) |
| 10+ | $4.55 ($5.23) | ( ) |
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| 100+ | $3.72 ($4.28) | ( ) |
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