LM5021MMX-1/NOPB

Converter Offline Flyback Forward Topology 145kHz VSSOP-8-0.65mm

VSSOP-8-0.65mmROHS3 CompliantActive

Ultra-Low Startup Current PWM Controller

Manufacturer: TI
Manufacturer part #: LM5021MMX-1/NOPB
Store part #: C2872420
Package / case: VSSOP-8-0.65mm
Category: AC DC Converters, Offline Switchers
Packaging: Tape & Reel (TR)

Datasheet (PDF)

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26,165 in stock

#C2872420

Stock & price checked 4 days ago

Quantity	Unit price	Pack price
1+	₹111.25	₹111.25
10+	₹86.43	₹864.30
30+	₹74.02	₹2,220.60
100+	₹61.82	₹6,182.00
500+	₹54.43	₹27,215.00
1,000+	₹50.72	₹50,720.00

Quantity (min 1)

1 × ₹111.25

₹111.25

excl. GST

₹131.28 incl. 18% GST

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Standard pack: 3,500 per reel

LM5021MMX-1/NOPB

₹111.25 for 1 + GST

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Specifications

Operating Temperature: -40℃~+125℃
Output Current: 700mA
Frequency - Switching: 145kHz
Voltage - Supply: 7.25V~30V
Topology: Flyback;Forward
Features: Over Voltage Protection;Short Circuit Protection;Overtemperature protection (OTP);Over Current Protection;Under Voltage Protection
Duty Cycle(Max): 80%
Feedback System: Secondary-Side Feedback
Working Mode: DCM;CCM

Packaging & compliance

RoHS: ROHS3 Compliant
Lifecycle: Active
Moisture sensitivity: MSL 1 (unlimited)
ECCN: EAR99
Packaging: Tape & Reel (TR)
Standard pack: 3,500 / Reel
Sold per: Piece
Minimum order: 1
Unit weight: 0.114 g

Overview

The LM5021 offline PWM controller contains all the features necessary to implement a high-efficiency offline single-ended flyback/forward power converter using current-mode control. The LM5021 features an ultra-low (25μA) startup current to minimize power dissipation in the high-voltage startup network. Skip-cycle mode reduces power consumption under light-load conditions, enabling energy-saving applications (ENERGY STAR, CECP, etc.). Additional features include undervoltage lockout, cycle-by-cycle current limiting, discontinuous mode overload protection, slope compensation, soft-start, and oscillator synchronization. This high-performance 8-pin IC has a total propagation delay of less than 100ns and allows the oscillator to be set to 1MHz with a single resistor.

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

Key features

Ultra-low startup current (25μA maximum)
Current mode control
Cycle-skip mode for reduced standby power
Single-resistor programmable oscillator
Synchronous oscillator
Adjustable soft-start
Integrated 0.7A peak current gate driver
Direct optocoupler interface
Maximum duty cycle limiting (80% for LM5021-1, 50% for LM5021-2)
Slope compensation (LM5021-1 only)
UVLO protection with hysteresis
Cycle-by-cycle overcurrent protection
Hiccup mode for sustained overload protection
Leading-edge blanking of current sense signal
Package: VSSOP-8 or PDIP-8

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