CHIPNOBO
Semiconductor Replacement Engineering & Supply Continuity
DC DC Switching Controllers
PRODUCT DATASHEET
ChipNobo MPN
NB2844N/81291
GLOBAL BRAND CROSS-REFERENCE
Texas Instruments
SWITCHING CONTROLLER
UC2844N/81291
- High-reliability design
- Long-term stable supply
- RoHS compliant
SWITCHING CONTROLLER
1. PRODUCT POSITIONING
NB2844N/81291 is a product identity corresponding to the reference product UC2844N/81291. 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 UC2844N/81291 | ChipNobo NB2844N/81291 | Match |
| Mounting Type | Through Hole | Through Hole | ✓ |
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | ✓ |
| Part Status | Active | Active | ✓ |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | ✓ |
| Number of Outputs | 1 | 1 | ✓ |
| Supplier Device Package | 8-PDIP | 8-PDIP | ✓ |
| Function | Step-Up Step-Down Step-Up/Step-Down | Step-Up Step-Down Step-Up/Step-Down | ✓ |
| Synchronous Rectifier | No | No | ✓ |
| Output Type | Transistor Driver | Transistor Driver | ✓ |
| Output Phases | 1 | 1 | ✓ |
| Clock Sync | No | No | ✓ |
| Frequency - Switching | Up to 500kHz | Up to 500kHz | ✓ |
| Duty Cycle (Max) | 48% | 48% | ✓ |
| Control Features | Frequency Control | Frequency Control | ✓ |
| Topology | Boost Buck Flyback Forward | Boost Buck Flyback Forward | ✓ |
| Output Configuration | Positive, Isolation Capable | Positive, Isolation Capable | ✓ |
| Voltage - Supply (Vcc/Vdd) | 12V ~ 28V | 12V ~ 28V | ✓ |
| RoHS Status | Not applicable | Not applicable | ✓ |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) | ✓ |