To find the correct datasheet, you need to identify the full part number or the manufacturer. Follow this guide to decode the component and find the right documentation. 1. Identify the Full Part Number
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:
Switched-capacitor topologies suffer when this component degrades. If this capacitor cracks or develops a high equivalent series resistance (ESR), the charging loop will fail. The circuit output will sag heavily under even light current loads. hxje ic datasheet top
): Regulated output voltage pin. Bypass this pin with a low-ESR ceramic capacitor to the ground. System ground reference connection. Pin 3 (EN / VENcap V sub cap E cap N end-sub
Capable of delivering up to 110mA to 230mA , depending on input conditions. To find the correct datasheet, you need to
The marking on a SOT23-6 surface-mount package identifies a highly popular, low-noise, regulated switched-capacitor DC-DC converter. Primarily manufactured under part numbers like HX4004 , HX4004A (by HEXIN/Hengjiaxing), and cross-referenced as the PS3120A , this integrated circuit (IC) functions as an inductorless "charge pump" voltage doubler. It delivers a fixed, stable output from variable low-voltage battery sources.
Operates at a constant low-noise frequency of 360kHz . Package: Standard SOT-23-6L (6-pin surface mount). Key Features and Protection Identify the Full Part Number While specific pin
While specific datasheet specs can vary by manufacturer, specialized boost ICs like the HX-JE generally include under-voltage lockout (UVLO), thermal shutdown, and over-current protection to ensure safe operation. Pin Configuration and Functions
Check the voltage levels across the bypass capacitors directly touching and Pin 1 ( VOUTcap V sub cap O cap U cap T end-sub ) using a digital multimeter. VINcap V sub cap I cap N end-sub is between 2.7V and 4.5V but VOUTcap V sub cap O cap U cap T end-sub stays close to or matches VINcap V sub cap I cap N end-sub
Powering peripheral interface cards.
Unlike traditional boost controllers, the HX-JE is "non-sensing," meaning it reduces the need for external feedback resistors or sensing networks in certain configurations, making it a "plug-and-play" solution for simple voltage stepping.