L6985F datasheet(1/65 Pages) STMICROELECTRONICS

部件名	L6985F

功能描述	Internal current limiting

PDF	65 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 65 page

This is information on a product in full production.

February 2016

DocID027836 Rev 2

1/65

L6985F

38 V, 500 mA synchronous step-down switching regulator

with 30 µA quiescent current

Datasheet

- production data

Features

 0.5 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

 Output voltage adjustable from 0.85 V to VIN

 Adjustable fSW (250 kHz - 2 MHz)

 Embedded output voltage supervisor

 Synchronization

 Adjustable soft-start time

 Internal current limiting

 Overvoltage protection

 Output voltage sequencing

 Peak current mode architecture

 RDSON HS = 360 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 L6985F is a step-down monolithic switching

regulator able to deliver up to 0.5 A DC. The

output voltage adjustability ranges from 0.85V to

VIN. Thanks to the P-channel MOSFET high-side

power element, the device features 100% of the

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 the idle mode, so it maximizes the

efficiency at the light-load with the 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). The RST open collector

output can also implement output voltage

sequencing during the power-up phase. The

synchronous rectification, designed for high

efficiency at the 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 effective constant current protection.

HTSSOP16 (RTH = 40 °C/W)

www.st.com

类似零件编号 - L6985F

制造商	部件名	数据表	功能描述
STMicroelectronics	L6981	3Mb / 49P	38 V, 1.5 A synchronous step-down converter with low quiescent current 15-Jan-2020
	L6982	2Mb / 48P	38 V, 2 A synchronous step-down converter with low quiescent current Rev 1
	L6982CDR	2Mb / 48P	38 V, 2 A synchronous step-down converter with low quiescent current Rev 1
	L6982NDR	2Mb / 48P	38 V, 2 A synchronous step-down converter with low quiescent current Rev 1
	L6983	4Mb / 63P	38 V, 3 A synchronous step-down converter with 17 μA quiescent current Rev 1 - October 2019

More results

类似说明 - L6985F

制造商	部件名	数据表	功能描述
Central Semiconductor C...	CCLM0035	303Kb / 2P	CURRENT LIMITING DIODE
Central Semiconductor C...	CMCL1300	75Kb / 1P	CURRENT LIMITING DIODE
Diotec Semiconductor	CL20M45	97Kb / 2P	Current Limiting Diodes
Digitron Semiconductors	CCL0035	73Kb / 1P	CURRENT LIMITING DIODE
Diotec Semiconductor	CL20M35	100Kb / 2P	Current Limiting Diodes
Diotec Semiconductor	CL20M35	100Kb / 2P	Current Limiting Diodes
STMicroelectronics	STEVAL-ILL046V1	216Kb / 4P	Internal current limiting 25-May-2016
	STEVAL-ILL051V2	231Kb / 4P	Internal current limiting 26-May-2016
	STEVAL-ILL054V1	230Kb / 4P	Internal current limiting 27-May-2016
	STEVAL-ILL054V2	218Kb / 4P	Internal current limiting 27-May-2016