Hxje Ic Datasheet Top New! -

HXJE IC Datasheet — Quick Overview and Top Takeaways

Introduction
The HXJE series ICs are a family of integrated circuits commonly used in power conversion and motor-control applications. This post highlights the most important details developers and engineers should extract from an HXJE datasheet when evaluating the part for a design.

Key features (what to scan first)

Device family & variants: Note package options and variant suffixes (different voltage/current ratings or feature sets).
Absolute maximum ratings: Supply voltage limits, junction temperature, input pin limits — exceeding these damages the IC.
Recommended operating conditions: The safe ranges for supply, temperature, and input/output signals for reliable performance.
Electrical characteristics: Quiescent current, supply current under load, logic thresholds, output drive strengths, and timing specs.
Thermal data: Junction-to-ambient thermal resistance (RθJA), recommended copper area or heat sinking, and max power dissipation.
Protection features: Overcurrent, overvoltage, thermal shutdown, undervoltage lockout — important for system robustness.
Typical application circuits: Reference schematics, recommended external components, and layout notes.
Pinout and packaging: Pin functions, mechanical dimensions, and footprint recommendations.
Timing and control details: PWM limits, dead-time, soft-start, and control interface (I2C/SPI/analog) if present.
Reliability & compliance: Recommended derating, ESD class, and any safety or EMI compliance notes.

How to read the datasheet efficiently (step-by-step)

Read the summary/spec block on page one for package options, target applications, and short specs.
Check absolute maximum and recommended operating conditions to ensure the IC suits your system voltages and temperatures.
Scan electrical characteristics for the parameters that directly affect your design (e.g., on-resistance, switching thresholds, quiescent current).
Review typical application circuits and component values — these are safe starting points.
Study layout and thermal recommendations; many failures stem from poor PCB layout or inadequate cooling.
Verify protection features and fault behavior to design system-level handling (e.g., how the IC reports faults).
Confirm mechanical dimensions and pad layout before creating footprints.

Design checklist for selecting an HXJE IC

Voltage and current ratings meet or exceed worst-case operating conditions.
Thermal dissipation fits PCB constraints and ambient conditions.
Protection features match system safety requirements.
Required control interface is supported and timing specs align with your controller.
Application example components are available and affordable.
Package and pinout fit your board and assembly process.

Common pitfalls to watch for

Ignoring derating and thermal resistance — leads to overheating.
Relying on “typical” values rather than guaranteed limits in the electrical tables.
Missing required external components (snubbers, bulk capacitors, gate resistors).
Not following layout recommendations for high-current/fast-switching paths.
Overlooking fault behavior (latching vs. auto-retry) — can cause unexpected system states.

Example concise spec summary (example values — confirm on the real datasheet)

Supply voltage: 4.5–18 V (absolute max 20 V)
Output current: up to 5 A continuous
Quiescent current: 2 mA typical
Shutdown threshold: <0.8 V on EN pin
Thermal: RθJA = 50 °C/W (SOIC-8)
(Always verify with the manufacturer datasheet for exact numbers.)

Final tips

Cross-check the manufacturer’s revision history and application notes for errata or recommended fixes.
Use the manufacturer’s reference designs as a baseline, then iterate layout and components for your use case.
Prototype with margin — test at temperature extremes and overload conditions.

If you want, I can draft a longer blog post with an expanded introduction, a full example design using specific HXJE variant values, and diagrams (schematic + PCB layout tips).

The integrated circuit (IC) marked on the top is the (or its variant HX4004), a Low Noise, Regulated Charge Pump DC/DC Converter manufactured by Hexin Semiconductor. Core Specifications

The HX4004A is designed to step up (boost) voltage for applications like lithium battery systems and portable electronics. AliExpress Package Type : SOT-23-6 (also referred to as SOT26). Input Voltage ( cap V sub cap I cap N end-sub : 2.7V to 4.5V. Output Voltage ( cap V sub cap O cap U cap T end-sub : Fixed at (typically regulated between 4.8V and 5.1V). Max Output Current Switching Frequency : ~360 kHz to 400 kHz. Quiescent Current : 0.17 mA at cap V sub cap I cap N end-sub Pin Configuration (SOT-23-6) hxje ic datasheet top

While generic boost ICs may vary, the HX4004A generally follows this layout for regulated charge pumps: AliExpress Pin 1 (VOUT) : Regulated output voltage. Pin 2 (GND) Pin 3 (FB/SHDN)

: Feedback or Shutdown (depending on the specific sub-variant). Pin 4 (C-) : Flying capacitor negative terminal. Pin 5 (VIN) : Input power supply. Pin 6 (C+) : Flying capacitor positive terminal. Key Characteristics Inductorless Design

: As a charge pump, it uses capacitors rather than inductors to boost voltage, saving board space.

: Specifically engineered for sensitive circuits that require a "clean" power supply. Protection : Includes thermal shutdown and short-circuit protection. AliExpress Equivalent/Compatible Parts

You may find this IC cross-referenced or interchangeable with the following markings or part numbers:

HX4004A DC-DC преобразователь HX-JE SOT23-6 CHP166

VIN : 2.7.....4.5 В Напряжение на выходе VOUT: 4.94 В Разброс напряжения на выходе VOUT: 4.8.....5.1 В Ток холостого

(often marked as ) is a high-efficiency, DC-DC charge pump boost converter

integrated circuit typically found in consumer electronics like portable Bluetooth speakers and power banks. It is widely used in Chinese-manufactured electronics as a low-cost solution for generating a regulated 5V rail from a lower lithium-ion battery voltage (3.0V–4.5V). The HX-JE is frequently cross-referenced with the 🛠️ Technical Specifications Based on the datasheet for the Go to product viewer dialog for this item. HXJE IC Datasheet — Quick Overview and Top

(the common equivalents), the device is a switched-capacitor voltage doubler. Input Voltage Range: 2.7V to 4.5V. Fixed Output Voltage: 5.0V (typically regulated at 4.94V ± 3%). Output Current: Operating Frequency: 360kHz (low noise constant frequency). Package Type: Go to product viewer dialog for this item. (6-pin surface mount). Efficiency:

High efficiency without the need for an external inductor (uses a "flying capacitor"). 📍 Pin Configuration (SOT-23-6)

Since this is a charge pump IC, its pinout is standard for the 4004/3120 series: Description Regulated Output Voltage (5V) Flying Capacitor Negative Terminal Flying Capacitor Positive Terminal Input Voltage (Battery) Active High Enable Pin 💡 Key Features and Applications No Inductor Needed:

Uses small ceramic capacitors to boost voltage, saving board space. Low Noise:

The fixed frequency operation minimizes electromagnetic interference (EMI), crucial for audio applications. Applications: Regulating power for Bluetooth speaker control boards. White LED backlighting. Battery-powered medical instruments. Li-Ion to 5V local conversion. 🔍 Identification Tips

Look for "HX=JE" or "HX-JE" on the top of the SOT-23-6 package.

Often carries the "HX" manufacturer mark, which corresponds to various specialized Chinese semiconductor houses. Go to product viewer dialog for this item. HX-JE - Discrete Semiconductors - Jotrin

The marking (often referred to as ) identifies the ) integrated circuit. This is a low-noise, constant-frequency DC-DC charge pump

converter typically used in compact power management applications. Core Technical Specifications According to various sources and technical listings for the HX4004/HX4004A , the device features: Regulated output voltage DC-DC converter. Operating Frequency: Fixed at approximately Output Current: Capable of delivering up to 0.23A (230mA) Package Type: Typically found in a small or SOT-23-6L surface-mount package. Operation Mode: Device family & variants: Note package options and

Non-sensing boost operation, meaning it does not require external sensing components for its boost functionality. Jotrin Electronics Identification & Equivalents

The "HXJE" code is a "top mark" or "marking code" used because the physical package is too small to fit the full part number. Primary Part Number: HX4004 or HX4004A. Manufacturer: Hexin Semiconductor. Cross-Reference/Analogs:

The chip is frequently listed as equivalent or identical to the IC Components Key Features for Design The marking codes database cross reference search.

1. Look for Context Clues on the PCB

Package type: SOT-23-5? SOIC-8? QFN?
Pin count & function: Is pin 1 GND? Pin 3 VCC? Pin 4 output?
Nearby components: Resistors to ground? An inductor? That suggests a DC-DC converter. A crystal? Likely a microcontroller or real-time clock.

Example: A 5-pin SOT-23 with “HXJE” could be a voltage regulator (e.g., LD39015) or a single-gate logic chip (e.g., 74LVC1G04).

5. Typical Application Circuit

The HXJE is frequently utilized in offline LED lighting and small appliance power adapters.

Typical Buck Converter Setup:

Input Stage: A bridge rectifier and filter capacitor provide high-voltage DC to the drain of the internal MOSFET.
Snubber Circuit: An RC snubber network is often recommended across the MOSFET to suppress voltage spikes caused by parasitic inductance.
Feedback Loop: A sense resistor on the CS pin sets the output current limit. The FB pin monitors the output voltage to prevent overshoot.

Design Tip: When laying out the PCB, keep the loop area of the high-frequency switching path (Input Cap -> MOSFET -> Inductor) as small as possible to minimize EMI (Electromagnetic Interference).

Issue 3: Marking "HXJE" but no output

Cause: Might be a different IC if on a Chinese module (e.g., TP4057 clone).
Fix: Measure pin 9 (OUT) with battery disconnected. Should be 4.2V. If 0V, test IN voltage. If still 0V, IC is dead.

2. Use SMD Code Databases (Your Best Bet)

Stop Googling the whole string. Try these dedicated resources:

SMD Marking Codes (book & website) – Search “HXJ” or “HX” + package shape.
CodeNumber.narod.ru – Old but gold for SMD codes.
ChipDB – Enter “HXJE” and filter by package.
AliExpress / LCSC – Search “HXJE IC” – sometimes sellers list the equivalent part.

Circuit Operation:

5V USB input applied to IN pin.
IC checks battery voltage:
- <2.5V → Pre-charge (20% I_CHG)
- 2.5V–4.1V → Fast charge (constant current)
- 4.1V–4.2V → Constant voltage
At C/10 termination, STAT1/STAT2 toggle to indicate "charge done".
EN pin (low) enables charging; high disables.

HXJE IC Datasheet — Quick Overview and Top Takeaways

Introduction
The HXJE series ICs are a family of integrated circuits commonly used in power conversion and motor-control applications. This post highlights the most important details developers and engineers should extract from an HXJE datasheet when evaluating the part for a design.

Key features (what to scan first)

Device family & variants: Note package options and variant suffixes (different voltage/current ratings or feature sets).
Absolute maximum ratings: Supply voltage limits, junction temperature, input pin limits — exceeding these damages the IC.
Recommended operating conditions: The safe ranges for supply, temperature, and input/output signals for reliable performance.
Electrical characteristics: Quiescent current, supply current under load, logic thresholds, output drive strengths, and timing specs.
Thermal data: Junction-to-ambient thermal resistance (RθJA), recommended copper area or heat sinking, and max power dissipation.
Protection features: Overcurrent, overvoltage, thermal shutdown, undervoltage lockout — important for system robustness.
Typical application circuits: Reference schematics, recommended external components, and layout notes.
Pinout and packaging: Pin functions, mechanical dimensions, and footprint recommendations.
Timing and control details: PWM limits, dead-time, soft-start, and control interface (I2C/SPI/analog) if present.
Reliability & compliance: Recommended derating, ESD class, and any safety or EMI compliance notes.

How to read the datasheet efficiently (step-by-step)

Read the summary/spec block on page one for package options, target applications, and short specs.
Check absolute maximum and recommended operating conditions to ensure the IC suits your system voltages and temperatures.
Scan electrical characteristics for the parameters that directly affect your design (e.g., on-resistance, switching thresholds, quiescent current).
Review typical application circuits and component values — these are safe starting points.
Study layout and thermal recommendations; many failures stem from poor PCB layout or inadequate cooling.
Verify protection features and fault behavior to design system-level handling (e.g., how the IC reports faults).
Confirm mechanical dimensions and pad layout before creating footprints.

Design checklist for selecting an HXJE IC

Voltage and current ratings meet or exceed worst-case operating conditions.
Thermal dissipation fits PCB constraints and ambient conditions.
Protection features match system safety requirements.
Required control interface is supported and timing specs align with your controller.
Application example components are available and affordable.
Package and pinout fit your board and assembly process.

Common pitfalls to watch for

Ignoring derating and thermal resistance — leads to overheating.
Relying on “typical” values rather than guaranteed limits in the electrical tables.
Missing required external components (snubbers, bulk capacitors, gate resistors).
Not following layout recommendations for high-current/fast-switching paths.
Overlooking fault behavior (latching vs. auto-retry) — can cause unexpected system states.

Example concise spec summary (example values — confirm on the real datasheet)

Supply voltage: 4.5–18 V (absolute max 20 V)
Output current: up to 5 A continuous
Quiescent current: 2 mA typical
Shutdown threshold: <0.8 V on EN pin
Thermal: RθJA = 50 °C/W (SOIC-8)
(Always verify with the manufacturer datasheet for exact numbers.)

Final tips

Cross-check the manufacturer’s revision history and application notes for errata or recommended fixes.
Use the manufacturer’s reference designs as a baseline, then iterate layout and components for your use case.
Prototype with margin — test at temperature extremes and overload conditions.

If you want, I can draft a longer blog post with an expanded introduction, a full example design using specific HXJE variant values, and diagrams (schematic + PCB layout tips).

The integrated circuit (IC) marked on the top is the (or its variant HX4004), a Low Noise, Regulated Charge Pump DC/DC Converter manufactured by Hexin Semiconductor. Core Specifications

The HX4004A is designed to step up (boost) voltage for applications like lithium battery systems and portable electronics. AliExpress Package Type : SOT-23-6 (also referred to as SOT26). Input Voltage ( cap V sub cap I cap N end-sub : 2.7V to 4.5V. Output Voltage ( cap V sub cap O cap U cap T end-sub : Fixed at (typically regulated between 4.8V and 5.1V). Max Output Current Switching Frequency : ~360 kHz to 400 kHz. Quiescent Current : 0.17 mA at cap V sub cap I cap N end-sub Pin Configuration (SOT-23-6)

While generic boost ICs may vary, the HX4004A generally follows this layout for regulated charge pumps: AliExpress Pin 1 (VOUT) : Regulated output voltage. Pin 2 (GND) Pin 3 (FB/SHDN)

: Feedback or Shutdown (depending on the specific sub-variant). Pin 4 (C-) : Flying capacitor negative terminal. Pin 5 (VIN) : Input power supply. Pin 6 (C+) : Flying capacitor positive terminal. Key Characteristics Inductorless Design

: As a charge pump, it uses capacitors rather than inductors to boost voltage, saving board space.

: Specifically engineered for sensitive circuits that require a "clean" power supply. Protection : Includes thermal shutdown and short-circuit protection. AliExpress Equivalent/Compatible Parts

You may find this IC cross-referenced or interchangeable with the following markings or part numbers:

HX4004A DC-DC преобразователь HX-JE SOT23-6 CHP166

VIN : 2.7.....4.5 В Напряжение на выходе VOUT: 4.94 В Разброс напряжения на выходе VOUT: 4.8.....5.1 В Ток холостого

(often marked as ) is a high-efficiency, DC-DC charge pump boost converter

integrated circuit typically found in consumer electronics like portable Bluetooth speakers and power banks. It is widely used in Chinese-manufactured electronics as a low-cost solution for generating a regulated 5V rail from a lower lithium-ion battery voltage (3.0V–4.5V). The HX-JE is frequently cross-referenced with the 🛠️ Technical Specifications Based on the datasheet for the Go to product viewer dialog for this item.