Feedback Pin. Used for closed-loop control to monitor and regulate the output voltage accurately. 4. Typical Application Circuit
2.5 V to 5.5 V (optimized for Li-ion battery ranges).
Regulated output voltage pin. This pin should be bypassed with a low-ESR ceramic capacitor to GND. GND (Pin 2): Ground reference for all internal circuitry. hxje ic datasheet top
The marking code represents the HX4004A (specifically the HX4004A-MF or HX4004A-MFC variant), a high-efficiency, low-noise, regulated charge pump DC-DC step-up converter . Alternatively, the identical "HX=JE" surface marking is shared by the PS3120A voltage doubler, functioning as a pin-to-pin compatible replacement. This specialized component uses an inductorless "non-sensing" design inside a compact SOT23-6 package to boost low lithium-ion battery voltages up to a stable 5V output. Core Specifications Overview
+-------------------------+ | HX-JE IC | VIN --| 4 (VIN) 1 (VOUT) |-- VOUT (Regulated 5V) | | | 6 (C+) 2 (GND) |-- GND | 5 (C-) 3 (SHDN) |-- EN / Shutdown Control +-------------------------+ | | +---[C_fly]-----+ Top Engineering Considerations for PCB Layout Feedback Pin
While specific pin counts can vary (commonly SOP-8 or DIP-8 packages), the standard pin configuration for a standard HXJE driver IC is as follows:
The HXJE IC is a staple in modern consumer electronics, particularly where stable power is needed from fluctuating battery levels: Typical Application Circuit 2
Stepping up power for portable electronics.
HX4004A DC-DC преобразователь HX-JE SOT23-6 CHP166