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Product Detailed Parameters
- Description：IC REG CTRLR MULT TOP 16SSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Boost, Flyback, Forward Converter, SEPIC
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：3V ~ 25V
- Frequency - Switching：100kHz ~ 500kHz
- Duty Cycle (Max)：95%
- Synchronous Rectifier：No
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：16-SSOP
- Grade：-
- Qualification：-
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Overview
The LT1950EGN#TRPBF is a single-switch PWM controller IC from Analog Devices, housed in a 16-lead SSOP package. It supports Boost, Flyback, Forward, and SEPIC topologies with an input voltage range of 3 V to 25 V. The device operates at switching frequencies between 100 kHz and 500 kHz, drawing a quiescent current of 2.3 mA. It features a programmable duty cycle clamp and auxiliary boost converter for driving N-channel MOSFETs.
Feature Summary
- Supports multiple DC-DC converter topologies including Boost, Flyback, Forward, and SEPIC configurations.
- Integrates an auxiliary boost converter to efficiently drive external N-channel power MOSFETs.
- Features a programmable duty cycle clamp resistor for precise output voltage regulation control.
Applications
- Industrial power supply designs requiring isolated or non-isolated step-up/down conversion
- Battery-powered systems utilizing Boost or SEPIC topologies for extended runtime
- Forward converter applications in telecommunications infrastructure
Procurement Notes
Verify the suffix TRPBF indicates tape-and-reel packaging distinct from tube variants. Confirm the 16-SSOP footprint matches your PCB layout requirements. Ensure the 3 V to 25 V input range aligns with your system's supply rails. Check that the 100 kHz to 500 kHz frequency range suits your thermal and efficiency targets.
Selection Notes
Select this component when a single-chip solution for multiple topologies is required. It is suitable for designs needing low quiescent current and flexible input voltage ranges. Consider the SSOP package size for space-constrained boards. Verify compatibility with external N-channel MOSFETs for optimal performance.
Part Context
This part belongs to the LT1950 family of wide-input-range controllers. It is designed to minimize external component count while supporting diverse power conversion needs. The device integrates essential protection and control features for robust operation across various industrial and commercial applications.
Replacement Considerations
LT1950EGN#PBF: Identical electrical specifications but packaged in a tube instead of tape-and-reel. Verify reel quantity and handling procedures differ. No functional changes are indicated by the suffix difference alone.
