900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






etcTI

LM5021-Q1 Datasheet Preview

LM5021-Q1 Datasheet

PWM Controller

No Preview Available !

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LM5021-Q1 AC-DC Current-Mode PWM Controller
LM5021-Q1
SNVSA90 – DECEMBER 2014
1 Features
1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM Classification Level 2: ±2 kV
– Device CDM Classification Level C4B: 750 V
• Ultra-low Startup Current (25 µA Maximum)
• Current Mode Control
• Skip Cycle Mode for Low Standby Power
• Single Resistor Programmable Oscillator
• Synchronizable Oscillator
• Adjustable Soft-Start
• Integrated 0.7-A Peak Gate Driver
• Direct Opto-Coupler Interface
• Maximum Duty Cycle Limiting (80% for LM5021-1
or 50% for LM5021-2)
• Slope Compensation (LM5021-1 Only)
• Undervoltage Lockout (UVLO) with Hysteresis
• Cycle-by-Cycle Overcurrent Protection
• Hiccup Mode for Continuous Overload Protection
• Leading Edge Blanking of Current Sense Signal
• Package: VSSOP-8
2 Applications
• DCM/CCM Flyback Converters
• Industrial Power Conversion
• SMPS for Smart Meters and Audio Amplifiers
• Building Automation and White Goods SMPS
• Isolated Telecom Power Supplies
3 Description
The LM5021 off-line pulse width modulation (PWM)
controller contains all of the features needed to
implement highly efficient off-line single-ended
flyback and forward power converters using current-
mode control. The LM5021 features include an ultra-
low (25 µA) start-up current, which minimizes power
losses in the high voltage start-up network. A skip
cycle mode reduces power consumption with light
loads for energy conserving applications (ENERGY
STAR®, CECP, and so forth). Additional features
include under-voltage lockout, cycle-by-cycle current
limit, hiccup mode overload protection, slope
compensation, soft-start and oscillator
synchronization capability. This high performance 8-
pin IC has total propagation delays less than 100 ns
and a 1-MHz capable oscillator that is programmed
with a single resistor.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM5021-Q1
VSSOP (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Application Diagram
VOUT
+
AC
90 ~ 264 Vac
+
VIN VCC
LM5021
RT OUT
SS CS
COMP GND
FEEDBACK
WITH
ISOLATION
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

LM5021-Q1 Datasheet Preview

LM5021-Q1 Datasheet

PWM Controller

No Preview Available !

LM5021-Q1
SNVSA90 – DECEMBER 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ..................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operation Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Performance Characteristics ........................ 7
7 Detailed Description .............................................. 9
7.1 Overview ................................................................... 9
7.2 Functional Block Diagram ....................................... 10
7.3 Feature Description................................................. 11
7.4 Device Functional Modes........................................ 16
8 Application and Implementation ........................ 17
8.1 Application Information............................................ 17
8.2 Typical Application ................................................. 19
9 Power Supply Recommendations...................... 26
10 Layout................................................................... 26
10.1 Layout Guidelines ................................................. 26
10.2 Layout Example .................................................... 27
11 Device and Documentation Support ................. 28
11.1 Trademarks ........................................................... 28
11.2 Electrostatic Discharge Caution ............................ 28
11.3 Glossary ................................................................ 28
12 Mechanical, Packaging, and Orderable
Information ........................................................... 28
4 Revision History
DATE
December 2014
REVISION
*
NOTES
Initial release.
2 Submit Documentation Feedback
Product Folder Links: LM5021-Q1
Copyright © 2014, Texas Instruments Incorporated


Part Number LM5021-Q1
Description PWM Controller
Maker etcTI
PDF Download

LM5021-Q1 Datasheet PDF






Similar Datasheet

1 LM5021-Q1 PWM Controller
etcTI





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy