Often cited as the direct manufacturer part number for the HXJE marking.
Are you using the chip as an or a PS3120A replacement?
The HX-JE operates as a constant-frequency power IC, eliminating the need for an external inductor. It relies exclusively on a single flying capacitor to achieve step-up voltage regulation. Operating Specification 2.7V to 4.5V Regulated Output Voltage ( VOUTcap V sub cap O cap U cap T end-sub ) 4.94V DC ( Switching Frequency Constant 360 kHz (Low Noise) Peak Output Current ( IMAXcap I sub cap M cap A cap X end-sub ) Up to 300 mA Continuous Current ( ) Continuous Current ( ) Quiescent Current (No Load) 0.17 mA (Typical at Operating Temperature Range Pinout Configuration (SOT-23-6 Package Top View)
Managing power for low-profile interface cards. Cross-Reference and Equivalents hxje ic datasheet top
Flying Capacitor Negative Terminal. Connection point for the charge-pump capacitor. C+
Based on technical summaries, the HX-JE is tailored for applications where input voltage is lower than the required output voltage. 1. Non-Sensing Architecture
If the IC gets abnormally hot or cuts out intermittently, calculate your total output current draw. Often cited as the direct manufacturer part number
The prominent advantage of the HX-JE architecture is its reliance entirely on tiny ceramic capacitors rather than surface-mount inductors. This eliminates electromagnetic interference (EMI) hazards that plague traditional magnetic switchers, allowing engineers to lay out sensitive analog components directly adjacent to the power rail. 2. Built-in Protection Arrays
If you've used the "hxje ic" in a project or have directly interacted with the product, consider sharing your experiences:
Place the flying capacitor directly adjacent to Pins 1 and 3 to minimize parasitic inductance along the high-frequency switching lines. It relies exclusively on a single flying capacitor
: A simplified internal schematic showing how signals flow through the logic gates or internal subsystems.
Example concise spec summary (example values — confirm on the real datasheet)