CHIPNOBO

Semiconductor Replacement Engineering & Supply Continuity

DC DC Switching Controllers

PRODUCT DATASHEET

ChipNobo MPN

NB51551DSSR

GLOBAL BRAND CROSS-REFERENCE

Texas Instruments

IC POWER MANAGEMENT

LM51551DSSR

  • High-reliability design
  • Long-term stable supply
  • RoHS compliant
IC POWER MANAGEMENT

1. PRODUCT POSITIONING

NB51551DSSR is a product identity corresponding to the reference product LM51551DSSR. This document presents the available product specifications, mechanical/package information and compatibility summary for engineering and procurement reference.

This document is a product information. Compatibility conclusions should be read together with the applicable Cross-Reference Identification (CID) rule, package/pin verification and engineering review record.

2. TECHNICAL SPECIFICATION COMPARISON (core parameters)
Parameter Texas Instruments LM51551DSSR ChipNobo NB51551DSSR Match
Part Status Active Active ✓
Mounting Type Surface Mount Surface Mount ✓
Number of Outputs 1 1 ✓
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) ✓
Output Configuration Positive Positive ✓
Synchronous Rectifier No No ✓
Output Type Transistor Driver Transistor Driver ✓
Function Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down ✓
Output Phases 1 1 ✓
Clock Sync Yes Yes ✓
Duty Cycle (Max) 93% 93% ✓
Topology Boost Flyback SEPIC Boost Flyback SEPIC ✓
Control Features Soft Start Soft Start ✓
Package / Case 12-WFDFN Exposed Pad 12-WFDFN Exposed Pad ✓
Supplier Device Package 12-WSON (3x2) 12-WSON (3x2) ✓
Frequency - Switching 100kHz ~ 2.2MHz 100kHz ~ 2.2MHz ✓
Voltage - Supply (Vcc/Vdd) 2.97V ~ 45V 2.97V ~ 45V ✓
RoHS Status ROHS3 Compliant ROHS3 Compliant ✓
Moisture Sensitivity Level (MSL) 1 (Unlimited) 1 (Unlimited) ✓

CHIPNOBO

Semiconductor Replacement Engineering & Supply Continuity

DC DC Switching Controllers

PRODUCT DATASHEET

3. SUPPLY & LIFECYCLE
ChipNobo Number NB51551DSSR
Lifecycle status Active
NRND No
EOL No
PCN monitor No
Last buy date No Deadline
Alternate availability Sufficient
4. APPLICATION AREAS
EV DC/DC Converter On-Board Charger (OBC)
Server PSU 48V Power Shelf
VRM Module AI Server
GPU Server Telecom Power System
5G Base Station Solar Inverter
Energy Storage System (ESS) Industrial UPS

5. ENGINEERING & COMMERCIAL NOTES

  • The ChipNobo MPN is the public product identity used by ChipNobo for this replacement reference.
  • The original manufacturer and original MPN are retained as reference identity information.
  • Product PDF data are intended for engineering, procurement and supply-continuity reference.
  • Current price, MOQ, lead time, available supply source and regional availability should be confirmed through RFQ.
  • For customer-specific qualification, PCB footprint approval, reliability requirements or design-in approval, the customer should perform the applicable validation process.

CHIPNOBO REPLACEMENT · Semiconductor Replacement Engineering & Supply Continuity Partner

Document purpose: Product Information / Replacement Reference · Generated from the product data supplied for NB51551DSSR.

Important Notice & Disclaimer

Document ID: 【CN-DATA-NB51551DSSR】 Revision: 1.0 Status: Released

The information provided by ChipNobo is intended solely for engineering evaluation, product selection, procurement, and supply continuity reference purposes. Product specifications, lifecycle status, availability, and other information are subject to change without notice. Customers should always verify relevant information against the latest official documentation published by the respective manufacturers.

Cross-reference and replacement recommendations are provided for engineering reference purposes only. They do not constitute a guarantee of pin-to-pin compatibility, interchangeability, or suitability for any particular application. Customers are responsible for conducting all necessary engineering reviews, testing, and qualification prior to product selection and use.

Manufacturer names, trademarks, and part numbers are referenced solely for product identification purposes. Their use does not imply any affiliation with, endorsement by, or authorization from the respective manufacturers, unless expressly stated otherwise.

To the maximum extent permitted by applicable law, ChipNobo makes no warranties, express or implied, regarding the completeness, accuracy, or suitability of the information provided and shall not be liable for any loss or damage arising from its use or reliance, except as otherwise expressly agreed in writing and subject to applicable law.