Product overview
Description
The L6982 is an easy to use synchronous monolithic step-down regulator capable of delivering up to 2 A DC to the load. The wide input voltage range makes the device suitable for a broad range of applications. The L6982 is based on a peak current mode architecture and is packaged in an SO 8L with internal compensation, thus minimizing design complexity and size.
The L6982 is available both in low consumption mode (LCM) and low noise mode (LNM) versions. LCM maximizes the efficiency at light-load with controlled output voltage ripple so the device is suitable for battery-powered applications.
LNM makes the switching frequency constant and minimizes the output voltage ripple for lightload operations, meeting the specification for low noise sensitive applications.
The EN pin provides enable/disable functionality.
The typical shutdown current is 2 μA when disabled. As soon as the EN pin is pulled up the device is enabled and the internal 1.3 ms soft-start takes place.
Pulse-by-pulse current sensing on both power elements implements an effective constant current protection and thermal shutdown prevents thermal run-away.
-
All features
- 3.5 V to 38 V operating input voltage
- Output voltage from 0.85 V to VIN
- 3.3 / 5 V fixed output voltage versions
- 2 A DC output current
- Internal compensation network
- 20 μA operating quiescent current
- Two different versions: LCM for high efficiency at light-loads and LNM for noise sensitive applications
- 2 μA shutdown current
- Internal soft-start
- High voltage VIN compatible Enable
- Overvoltage protection
- Output voltage sequencing
- Thermal protection
- Synchronization to external clock for LNM devices
- SO 8L package
eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
Power Supply Design Tool
SMPS design, by topology, by type and by product PFC design with analog and digitial control Supports various PCB configurations 
LED Lighting Design Tool
Handles AC-DC and DC-DC design in common topologies Displays interactive and annotated schematic Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data 
Digital Power Workbench
Provides a step-by-step optimized design of power section and control loop Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs 
Power Tree Designer
Specify input/output power for each node in the tree Check for consistency Design each individual node 
AC Switches Simulator
Select ratings and application waveforms Get junction temperature and blocking voltage graphs Search and sort suitable devices 
Rectifier Diodes Simulator
Select ratings and application waveforms Estimate power losses Search and sort suitable devices 
STPOWER Studio
Supports long mission profiles Provides power loss and temperature graphs Helps define heatsink thermal properties 
Twister Sim
Help select the right ViPOWER Automotive power device Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis Supports various PCB configurations 
TVS Simulator
Specify system ratings and surge waveform Search and sort suitable devices 
Estimate
Build simple schematics and firmware inputs in minutes Quickly generate reliable estimates of: Battery life System power consumption Bill of materials costs 
Active Filters
Handles multi-stage-designs and common topologies Returns circuit component values Provides gain, phase and group delay graphs Low Pass, High Pass and Band Pass 
Comparators
Handles most common configurations Returns circuit components values Provides I/O signal waveforms Inverting, Non Inverting, Window 
Low side Current Sensing
Returns circuit component values Provides current error graphs 
High side Current Sensing
Provides current error graphs. Help to select the right High side current sensing and shunt devices. 
NFC Inductance
Input geometry and substrate properties Get antenna impedance 
UHF Link Budget
Enter forward and reverse link characteristics The tool returns link budget estimate 
NFC Tuning Circuit
Enter antenna parameter and matching target Select the topology of the matching network The tool returns component values for the desired design targets You might also like...
Featured Videos
Recommended for you
EDA Symbols, Footprints and 3D Models
STMicroelectronics - L6982
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Please select one model supplier :
Symbols
Footprints
3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| L6982C33DR | Active | SO-8 | Industrial | Ecopack2 | |
| L6982C50DR | Active | SO-8 | Industrial | Ecopack2 | |
| L6982CDR | Active | SO-8 | Industrial | Ecopack2 | |
| L6982N33DR | Active | SO-8 | Industrial | Ecopack2 | |
| L6982N50DR | Active | SO-8 | Industrial | Ecopack2 | |
| L6982NDR | Active | SO-8 | Industrial | Ecopack2 | |
L6982C33DR
Package:
SO-8Material Declaration**:
L6982C50DR
Package:
SO-8Material Declaration**:
L6982CDR
Package:
SO-8Material Declaration**:
L6982N33DR
Package:
SO-8Material Declaration**:
L6982N50DR
Package:
SO-8Material Declaration**:
L6982NDR
Package:
SO-8Material Declaration**:
(**) 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.
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) | Temperature (°C) | Operating Temperature (°C) (min) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||
| L6982N50DR | | | distributors No availability of distributors reported, please contact our sales office | SO-8 | Tape and Reel | CHINA | EAR99 | NEC | -40 | 150 | -40 | |||
| L6982CDR | | | distributors No availability of distributors reported, please contact our sales office | SO-8 | Tape and Reel | CHINA | EAR99 | NEC | -40 | 150 | -40 | |||
| L6982NDR | | | distributors No availability of distributors reported, please contact our sales office | SO-8 | Tape and Reel | CHINA | EAR99 | NEC | -40 | 150 | -40 | |||
| L6982N33DR | | | distributors No availability of distributors reported, please contact our sales office | SO-8 | Tape and Reel | CHINA | EAR99 | NEC | -40 | 150 | -40 | |||
| L6982C50DR | | | distributors No availability of distributors reported, please contact our sales office | SO-8 | Tape and Reel | CHINA | EAR99 | NEC | -40 | 150 | -40 | |||
| L6982C33DR | | | distributors No availability of distributors reported, please contact our sales office | SO-8 | Tape and Reel | CHINA | EAR99 | NEC | -40 | 150 | -40 | |||
L6982N50DR Active
L6982CDR Active
L6982NDR Active
L6982N33DR Active
L6982C50DR Active
L6982C33DR 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