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L6986 Scheda tecnica(PDF) 1 Page - STMicroelectronics

Il numero della parte L6986
Spiegazioni elettronici  38 V, 2 A synchronous step-down switching regulator with 30 A quiescent current
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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This is information on a product in full production.
August 2016
DocID025376 Rev 7
1/68
L6986
38 V, 2 A synchronous step-down switching regulator with 30 μA
quiescent current
Datasheet
- production data
Features
 2 A DC output current
 4 V to 38 V operating input voltage
 Low consumption mode or low noise mode
 30 A IQ at light load (LCM VOUT = 3.3 V)
 8 A 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 m, RDSON LS = 150 m
 Thermal shutdown
Applications
 Designed for 12 V and 24 V buses
 Programmable logic controllers (PLCs)
 Decentralized intelligent nodes
 Sensors and low noise applications (LNM)
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.
HTSSOP16 (RTH = 40 °C/W)
www.st.com


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