LT3420EDD-1#PBF

Power Management - Specialized Overview

The LT3420EDD-1#PBF is a photoflash capacitor charger manufactured by Analog Devices Inc., housed in a 10-pin DFN EP package. It operates with an input voltage range of 1.8 V to 16 V and delivers an output current of 1 A. The device utilizes a flyback topology with an adjustable output voltage. Key electrical specifications include a quiescent current of 10 nA, a switching frequency of 1 kHz, and a supply current of 300 uA. It supports shutdown functionality and functions within a temperature range of -40°C to +85°C.

Power Management - Specialized Feature Summary

• Employs adaptive off-time control algorithm to maintain current-limited continuous mode transformer operation throughout the charge cycle.
• Designed for high-efficiency charging of large flash capacitors using flyback topology.
• Eliminates high inrush currents commonly found in competing modules.

Power Management - Specialized Applications

• Digital camera flash power systems
• Film camera flash modules
• High-voltage photoflash capacitor charging

Power Management - Specialized Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm RoHS compliance status and check for restricted substance declarations prior to integration. Ensure the specific suffix matches design requirements. Review datasheet revisions for any updates to pin configurations or electrical characteristics before finalizing procurement orders.

Power Management - Specialized Selection Notes

Select this component for applications requiring efficient charging of large capacitance values from low input voltages. The flyback topology suits designs needing high output voltages. Consider the 10-pin DFN package for space-constrained layouts. Evaluate thermal performance given the operating temperature range and ensure adequate heat dissipation for the intended duty cycle.

Power Management - Specialized Part Context

This part belongs to the LT3420 series of specialized power management ICs designed specifically for flash photography applications. It integrates the necessary control logic and power switches to drive external transformers in a flyback configuration, distinguishing it from standard DC-DC regulators by its focus on high-voltage pulse generation.

Power Management - Specialized Replacement Considerations

Consult official Analog Devices documentation for verified substitute part numbers. Cross-reference pinouts and electrical parameters carefully when considering alternatives from other manufacturers to ensure compatibility with existing transformer designs and control algorithms.