Key facts
- Manuals
- 3
- Languages
- ZH
- Last added
- 2012-02-21
Featured qxmd manuals
QXMD QX5232 Small Power Solar LED Driver Datasheet
The QX5232 is a small‑power solar LED driver IC designed for solar lighting, flashlights and emergency lamps. It integrates a switching driver, light‑sensor circuit, battery over‑charge and over‑discharge protection, and an LED shut‑off circuit, requiring only a few external components.
The document provides an overview, typical applications, pin definitions, absolute maximum ratings, electrical characteristics, circuit operation details, additional operating modes, package information, and contact details for the manufacturer. This manual is written in Chinese.
Covers: Overview · Typical Applications · Pin Definitions · Absolute Maximum Ratings · Electrical Characteristics · Circuit Operation
QXMD QX9910 LED Driver IC Datasheet
The QX9910 is a constant‑current LED driver IC designed for high‑brightness LED strings. It features an internal high‑precision comparator, off‑time control circuit, and programmable current range from a few milliamps to 1 A. The device operates from a wide input voltage range (2.5 V–400 V) and can switch at frequencies up to 2.5 MHz, allowing reduction of external inductors and capacitors.
Typical applications include 220 V AC powered LED lighting, RGB display panels, backlights for flat‑panel displays, traffic‑signal LEDs, and general constant‑current sources. Brightness can be adjusted via an external PWM signal on the EN pin or by changing the external resistor that sets the drive current. The IC includes protection features such as ESD rating of 2000 V and low standby current. This manual is written in Chinese.
Covers: Overview · Features · Package · Pin Configuration · Maximum Rated Parameters · Typical Application Circuits
Lumenchip QX5241 LED Driver User Manual
The QX5241 is a step‑down, constant‑current LED driver with a wide input range (5.5 V‑36 V) and high‑frequency operation up to 2 MHz. It offers ±5 % current accuracy, 20 % inductor current ripple, and operates from –40 °C to 125 °C in a compact SOT‑23‑6 package.
The manual includes a product overview, pin definitions, detailed electrical characteristics, typical efficiency curves, an application guide with design formulas, and package dimensions, helping designers integrate the driver into lighting, automotive tail‑lamp, and other high‑luminance LED applications. This manual is written in Chinese.
Covers: Overview · Pin Definitions · Electrical Characteristics · Typical Efficiency Curves · Application Guide · Package Dimensions
Latest qxmd manuals
QXMD QX5232 Small Power Solar LED Driver Datasheet
Datasheet 9 pages · 156 KB · ZHTechnical datasheet for the QX5232 solar LED driver covering specifications, pinout, and operation modes.
QXMD QX9910 LED Driver IC Datasheet
Datasheet 10 pages · ZHThe QXMD QX9910 is a high‑efficiency constant‑current LED driver IC with programmable current up to 1 A, wide input voltage 2.5‑400 V, and up to 2.5 MHz…
Lumenchip QX5241 LED Driver User Manual
User Manual 7 pages · 410 KB · ZHThe Lumenchip QX5241 LED driver manual provides overview, pinout, electrical specs, and application guidelines for high‑efficiency, 2 MHz operation.
Which document do I need?
Datasheet
Ratings, dimensions and ordering codes, for selection and design work.
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in qxmd manuals
What is the input voltage range of the QX5232?
The VDD input voltage ranges from 0.8 V to 6 V.
What LED current range does the QX5232 support?
It supports an LED current from 10 mA up to 300 mA.
What is the maximum switching frequency of the QX9910?
The QX9910 can operate at a switching frequency up to 2.5 MHz.
How can LED brightness be adjusted with the QX9910?
Brightness can be adjusted either by changing the external resistor that sets the drive current or by applying a PWM signal to the EN pin.
What is the input voltage range of the QX5241?
The driver operates with an input voltage from 5.5 V up to 36 V.
How is the output current set?
Output current is set by an external resistor (RSENSE) placed between VIN and CSN.