Electric heating neck pillow chip-dltap703sc

• Basic composition

A mechanical key , A thermistor , Two tricolor indicators , A heater ;

• Product function

（ One ） The default shutdown state is when you power on for the first time

（ Two ） Key function

1、SW1- Short press - Switchgear 、 Switch mode ;

2、SW1- Switch mode ：

3、 Press briefly for the first time - First gear heating , Simultaneous red 、 The green indicator is always on , Heating process 90S, Constant temperature 41-42℃;

First gear voltage output - No load output voltage = Battery voltage -Buck Pressure drop , Constant temperature process - No load output voltage =1.777V;

4、 Short press the second - Second gear heating , At the same time, the blue indicator is always on , red 、 The green indicator light is off , Heating process 110S, Constant temperature 43-44

℃;

Second gear voltage output - No load output voltage = Battery voltage -Buck Pressure drop , Constant temperature process - No load output voltage =2.17V;

5、 Short press for the third time - Third gear heating , At the same time, the red indicator is always on , The blue indicator light is off , Heating process 130S, Constant temperature 46-47℃;

Third gear voltage output - No load output voltage = Battery voltage -Buck Pressure drop , Constant temperature process - No load output voltage =2.4V;

6、 Short press for the fourth time - To turn it off , At the same time, the red indicator light goes out ;

7、OTP Protect - Protection temperature 60℃, Turn off output , recoverable

Restore the temperature 40℃, Start output , Directly enter the constant temperature output voltage of the corresponding gear ;

（ 3、 ... and ） Low power consumption is required for products with batteries

1、 Charging requirements and indicators ：

battery level 0-33%, Charging voltage ＜3.8V, red 、 The green light flashes ;

battery level 33-66%, Charging voltage ≥3.8V, The blue light is flashing ;

battery level 66-99%, Charging voltage ≥4.1V, The red light flashes ;

battery level 100%,HM5061 Of LED The lamp determines the full state , The red light is always on ;

2、 When the battery voltage ＜3.3V when , In any gear , The corresponding indicator light will flash ;

• Product circuit diagram