High-efficiency LED backlight driving power solution based on AP3036
BCD recently introduced the innovative design of the tandem white LED driver AP3036. The AP3036 provides a simple pulse dimming technology up to 100KHz. The system can easily adjust the output brightness by providing wide and narrow digital pulses. It also incorporates a Schottky diode (Diode) into the circuit, resulting in fewer system components and less RF interference. Currently portable electronic LCD screen backlight based mainly white LED, white LED with luminance proportional to the current, AP3036 architecture provides series type LED, may be provided in series up to a desired voltage 8 white LED, and may be connected in series A resistor to set the maximum LED current, the function can cover all the small size LCD screen backlight required, and ensure the uniformity of LED brightness. The biggest advantage of the AP3036 is that it can adjust the brightness of the LED with PWM signal. The dimming frequency range is very wide and can reach 100KHz. When the AP3036 uses the frequency above 20KHz to adjust the LED brightness, the audio range can be skipped, so the audio interference is smaller and the EMI is more. it is good. Figure 1. Typical application of the AP3036/A The AP3036 has a conversion efficiency of up to 82% and a minimum operating voltage of 2.5V, which reduces current consumption and extends battery life. The built-in Schottky diode reduces the components and complexity required for the system. The built-in Soft start function reduces Inrush current, overvoltage protection (OVP) and overcurrent protection (OCP) to determine that the system is operating under normal conditions. The AP3036 is available in SOT23-6 and TSOT-23-6 packages and is available in 200mV and 250mV versions (AP3036A). Both versions are currently in volume production and are sampling and the Demo Board. Introduction to AP3036 AP3036 is BCD's latest LED backlight dedicated drive control chip, which uses inductor structure current mode boost control to provide ideal LED constant current function and excellent regulation. The AP3036 uses a series LED structure to drive up to 8 LEDs, and a constant current function of the LED is achieved through a current sense resistor. With an input voltage range of 2.5V to 16V, a single-cell battery or multiple cells can be used in series to power the system.
Micro motors Based
on Dc Motor, Micro Motor belongs to the small size of dc motor,micro
motor rotor, back cover, chassis, rotor winding is mainly copper, back
cover most of the use of plastic material, motor shell use galvanized steel plate, the micro motor can be ROHS test.
A micro
motor is any of a class of rotary electrical machines that converts
direct current electrical energy into mechanical energy. The most common types
rely on the forces produced by magnetic fields. Nearly all types of micro motors have some internal mechanism, either electromechanical or
electronic, to periodically change the direction of current flow in part of the
motor.
Micro motor is mainly used in: outdoor lamps, electronic toys, model aircraft, intelligent bin, breeze machine, etc
Method of use: the best stable in
horizontal plane, installed on the Micro motor output shaft
parts, cannot use a hammer to knock, knock prone to press into the micro motor drive, may cause damage to internal components, and cannot be
used in the case of blocked.
Operating temperature range:
Micro motor should be used at a temperature of -10~60℃.
The figures stated
in the catalog specifications are based on use at ordinary room
temperature catalog specifications re based on use at ordinary room
temperature (approximately20~25℃.
If a micro motor is used outside the prescribed temperature range,the grease on the gearhead
area will become unable to function normally and the motor will become unable
to start.Depending on the temperature conditions ,it may be possible to deal
with them by changing the grease of the motor's parts.Please feel free to
consult with us about this.
Storage
temperature range:
Micro motor should be stored ta a temperature of -15~65℃.
In case of storage
outside this range,the grease on the gearhead area will become unable to
function normally and the motor will become unable to start.
Service life:
The longevity of micro motor is greatly affected by the load conditions , the mode of
operation,the environment of use ,etc.Therefore,it is necessary to check the
conditions under which the product will actually be used .The following
conditions will have a negative effect on longevity.Please consult with us
should any of them apply.
â—Use with a load
that exceeds the rated torque
â—Frequent starting
â—Momentary reversals
of turning direction
â—Impact loads
â—Long-term
continuous operation
â—Forced turning
using the output shaft
â—Use in which the
permitted overhang load or the permitted thrust load is exceeded
â—A pulse drive
,e.g.,a short break,counter electromotive force,PWM control
â—Use of a voltage
that is nonstandard as regards the rated voltage
â—Use outside the
prescribed temperature or relative-humidity range,or in a special environment.
â—Please consult with
us about these or any other conditions of use that may apply,so that we can be
sure that you select the most appropriate model.
when it come to
volume production,we're a major player as well .each month,we rurn out
600000 units,all of which are compliant with the rohs directive.Have any
questions or special needed, please contact us, we have the engineer group and
best sales department to service to you Looking forward to your inquiry. Welcome
to our factory.
Micro Motor Micro Motor,Micro Dc Motor,Micro Vibration Motor,Micro Electrical Motor Shenzhen Shunchang Motor Co., LTD. , http://www.scgearmotor.com