R6986 datasheet(1/62 Pages) STMICROELECTRONICS

部件名	R6986

功能描述	38 V, 2 A synchronous step-down switching regulator

PDF	62 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 62 page

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

May 2015

DocID026996 Rev 2

1/62

R6986

38 V, 2 A synchronous step-down switching regulator with 30 μA

quiescent current

Datasheet

- preliminary data

Features

 General features

– 2 A DC output current

– 4 V to 38 V operating input voltage

– Large ambient temperature range:

-40 °C to 125 °C

– 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 m, RDSON LS = 150 m

– Thermal shutdown

 Aerospace and defense features

– Suitable for use in aerospace and defense

applications

– Dedicated traceability and part marking

– Production parts approval documents

available

– Adapted extended life time and

obsolescence management

– Extended product change notification

process

– Designed and manufactured to meet sub-

ppm quality goals

– Advanced mold and frame designs for

superior resilience in harsh environments

(acceleration, EMI, thermal, humidity)

– Extended screening capability on request

Applications

 Designed for aerospace applications

 Battery powered applications

Description

The R6986 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. The 100% duty cycle, the wide

input voltage range and the large ambient

temperature range make it ideal for aerospace

and defense applications. The “Low Consumption

Mode” (LCM) is designed for always-on

applications, so it maximizes the efficiency at light

load with controlled output voltage ripple. The

“Low Noise Mode” (LNM) makes the switching

frequency constant and minimizes the output

voltage ripple overload current range. 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 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

类似零件编号 - R6986

制造商	部件名	数据表	功能描述
Hamamatsu Corporation	R6985-80	134Kb / 2P	ELECTRON MULTIPLIER

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