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Product Detailed Parameters
- Description：IC REG CTRLR MULT TOP 20TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Buck, Boost, Buck-Boost
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：-4.5V ~ -80V
- Frequency - Switching：100kHz ~ 750kHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Power Good, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-TSSOP-EP
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Overview
The LT8709EFE#TRPBF is a synchronous PWM controller designed for negative-to-negative or negative-to-positive DC/DC conversion. It supports Buck, Boost, Inverting, and SEPIC topologies with a single output. The device operates within a supply voltage range of -4.5V to -80V and features a switching frequency adjustable from 100kHz to 750kHz. It delivers up to 25A output current and includes rail-to-rail output current monitoring. Operating temperatures span from -40°C to +125°C, housed in a TSSOP-20 package.
Feature Summary
- Synchronous PWM control architecture for multi-topology DC/DC conversion
- Rail-to-rail output current monitoring capability
- Supports clock synchronization for system-wide timing alignment
Applications
- Negative input power distribution systems
- Industrial equipment requiring bidirectional voltage conversion
- Telecommunications infrastructure with negative bus architectures
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors. Confirm the suffix TRPBF indicates tape-and-reel packaging. Check RoHS compliance documentation for environmental standards. Ensure ESD handling protocols are followed during storage and assembly. Validate lot traceability against manufacturing records.
Selection Notes
Select this controller when negative input voltages up to 80V are present. Choose for applications requiring flexible topology selection including buck, boost, or inverting configurations. Consider the TSSOP-20 package for space-constrained PCB layouts. Verify thermal management requirements for high-current operation at elevated temperatures.
Part Context
Part of the LT8709 family of power management ICs. Designed specifically for challenging DC/DC conversion scenarios involving negative inputs. Complements other Analog Devices PMIC solutions for complete power system design.
Replacement Considerations
LT8709EFE#PBF offers identical electrical specifications in a leaded package variant. Cross-reference pinouts and thermal characteristics before substitution. Verify that the application board supports the specific package type selected.
