LM5025MTCX/NOPB
The LM5025 is an active-clamp forward PWM controller operating from high-voltage inputs up to 90 V, using voltage-mode control with feedforward and an 80% maximum duty cycle. It supports both N- and P-channel clamp FETs and includes current limiting, high-voltage startup, leading-edge blanking, soft start and thermal shutdown. It is used in isolated DC/DC and AC/DC power supplies.
- Package
- TSSOP-20
Product overview
The LM5025 is an active-clamp forward PWM controller operating from high-voltage inputs up to 90 V, using voltage-mode control with feedforward and an 80% maximum duty cycle. It supports both N- and P-channel clamp FETs and includes current limiting, high-voltage startup, leading-edge blanking, soft start and thermal shutdown. It is used in isolated DC/DC and AC/DC power supplies.
- Manufacturer
- TI
- Part number
- LM5025MTCX/NOPB
- Category
- Power Management
- Package
- TSSOP-20
- Packaging
- Tape & Reel
- Condition
- New & Original
- Compliance
- RoHS & REACH Compliant
- Lifecycle
- Confirm with manufacturer
- Lead time / MOQ
- Confirm with quotation
Technical parameters
42 parametersConstruction
- VIN to
- 100
- VCC to
- 16
- CS1, CS2 to
- 1 V
- All other inputs to
- 7 V
- 4 Submit Documentation Feedback Cop
- 2016, Texas In
- VCC Reg TJ = 25°C
- 7.6
- I-VIN Startup regulator leakage TJ = 25°C
- 165
- (external Vcc Supply) TJ = –40°C to 125°C
- 500
- (positive going Vcc) VCC Reg
- 220
- VREF TJ = 25°C
- 5
- CS1 CS1 step from 0 to 0.4 V
- 40
- CS2 CS2 step from 0 to 0.4 V
- 50
- Leading edge blanking time
- 50 ns
- (CS1) TJ = –40°C to 125°C
- 0.28
- (CS2) restart TJ = –40°C to 125°C
- 0.28
- a CS2 event TJ = –40°C to 125°C
- 1.5
- Sync frequency TJ = –40°C to 125°C
- 160 kHz
- Sync threshold
- 2 V
- Minimum sync pulse width TJ = –40°C to 125°C
- 100 ns
- COMP step 5 V to 0 V
- 40
- Duty cycle TJ = –40°C to 125°C
- 80%
- Delta RAMP measured from TJ = 25°C
- 2.5
- Ramp clamp level
- 2.6 V
- hysteresis TJ = –40°C to 125°C
- 24
- OUTPUT_A rise time Cgate = 2.2 nF
- 20 ns
- OUTPUT_A fall time Cgate = 2.2 nF
- 15 ns
- OUTPUT_B rise time Cgate = 1 nF
- 20 ns
- OUTPUT_B fall time Cgate = 1 nF
- 15 ns
- RSET = 38 kΩ connected to TJ = 25°C
- 105
Performance
- Junction temperature
- 150 °C
- Storage temperature, Tstg
- 150 °C
- VIN voltage
- 90 V
- External voltage applied to
- 15 V
- Operating junction temperature
- 125 °C
- VCC undervoltage lockout voltage
- 120
- VCC supply current (ICC) Cgate = 0 TJ = –40°C to 125°C
- 4.2 mA
- Cycle by cycle threshold voltage TJ = 25°C
- 0.25
- Soft-start current source following TJ = 25°C
- 1
- COMP open circuit voltage TJ = –40°C to 125°C
- 5.9 V
- Undervoltage shutdown TJ = 25°C
- 20
- OUTPUT_B peak current sink Bipolar device at Vcc/2
- 1 A
- OUTPUT_A peak current sink Bipolar device at Vcc/2
- 3 A
Specifications & documentation
Use the official manufacturer documentation to verify electrical characteristics, package dimensions and operating limits before design approval.
Frequently asked questions
Common pre-quotation questions and selection notes to help you verify key parameters and sourcing before requesting a quote.
How do I verify the part is genuine / avoid counterfeit?
Buy only from authorized or franchised channels. On receipt, check: (1) laser-etched markings that solvent will not remove; (2) batch / lot code consistent between label and device; (3) original reel or tube packaging; (4) request traceability documents (CoC, date code). For critical parts, third-party X-ray / decapsulation testing is recommended.
How do I read the markings / date code on a chip?
Most active ICs use a 4-digit date code YYWW (year + week, e.g. 2345 = 2023 week 45). The top mark is manufacturer logo + base part number + lot code. For SMD code lookup, search by "marking code + package" on AllDataSheet / Octopart / LCSC.
What does the package code mean (TO-220, SOT-23, QFP…)?
Package codes describe the physical form factor and pin layout — critical when sourcing, because electrically equivalent parts in different packages will not fit the PCB. Common: TO-220 (3-terminal power), SOT-23 (3-pin small signal), DIP / SOIC (through-hole / SMD ICs), QFP / QFN (MCUs, processors).
What if my original model is discontinued (EOL / NRND)?
Three options: (1) the manufacturer’s recommended replacement; (2) franchised distributor legacy stock; (3) a functionally compatible cross-brand part — provided pinout and key parameters match. Always evaluate on a real board before mass swap.
What is the minimum order quantity (MOQ) and lead time?
We support both sample and volume orders. Minimum order quantity, stock availability and lead time are confirmed per inquiry — tell us your model and quantity and we will quote. Sample quantities for design validation are supported.
Can I get the datasheet and samples?
The full datasheet is linked on this page. For parts without a direct datasheet, we can locate the manufacturer document on request. Sample requests are supported — contact us with your model and quantity.
Request confirmation of current stock, date code, packaging, price and delivery terms. Product information does not constitute a binding offer; final specifications are confirmed with your quotation.