Product overview
Description
The L6986 device is a step-down monolithic switching regulator able to deliver up to 2 A DC. The output voltage adjustability ranges from 0.85 V to VIN. Thanks to the P-channel MOSFET high-side power element, the device features 100% duty cycle operation. The wide input voltage range meets the specification for the 5 V, 12 V and 24 V power supplies. The “Low Consumption Mode” (LCM) is designed for applications active during idle mode, so it maximizes the efficiency at light load with controlled output voltage ripple. The “Low Noise Mode” (LNM) makes the switching frequency constant overload current range, meeting the low noise application specification. The output voltage supervisor manages the reset phase for any digital load (μC, FPGA, etc.). The RST open collector output can also implement output voltage sequencing during the power-up phase. The synchronous rectification, designed for high efficiency at medium - heavy load, and the high switching frequency capability make the size of the application compact. Pulse by pulse current sensing on both power elements implements an effective constant current protection.
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All features
- 2 A DC output current
- 4 V to 38 V operating input voltage
- Low consumption mode or low noise mode
- 30 μA IQ at light load (LCM VOUT = 3.3 V)
- 8 μA IQ-SHTDWN
- Adjustable fSW (250 kHz - 2 MHz)
- Output voltage adjustable from 0.85 V to VIN
- Embedded output voltage supervisor
- Synchronization
- Adjustable soft-start time
- Internal current limiting
- Overvoltage protection
- Output voltage sequencing
- Peak current mode architecture
- RDSON HS = 180 mΩ, RDSON LS = 150 mΩ
- Thermal shutdown
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STMicroelectronics - L6986
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All resources
| Resource title | Version | Latest update | Actions | Details | Download |
|---|
SPICE models (1)
| Resource title | Version | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| ZIP | 30 Sep 2016 | 30 Sep 2016 |
SIMPLIS models (1)
| Resource title | Version | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| ZIP | 2025.11 | 18 Nov 2025 | 18 Nov 2025 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| L6986 | Active Product is in volume production. | HTSSOP16 | Industrial | Ecopack2 | 10 | 2023-06-06T00:00:00.000+02:00 | |
| L6986TR | Active Product is in volume production. | HTSSOP16 | Industrial | Ecopack2 | 10 | 2023-06-06T00:00:00.000+02:00 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L6986 | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| L6986TR | | | distributors No availability of distributors reported, please contact our sales office |
L6986 Active
L6986TR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors