natlinear LN5071
The LN5071 series of internal integration of two highly precise, low noise, positive voltage LDO regulators manufactured using CMOS processes. The device used in portable electronic products drive main or vice screen backlight modules and the provision of low-voltage system voltage source.GENERAL DESCRIPTION
LN5071 can drive four LEDs, each LED currents up to 20mA, through the PWM signal can adjust average brightness, the constant current can also be adjusted by a one-time input pulse count signal, a total of 32 level linear current. LN5071 integrated two voltage regulator has a separate enable pin, and each one voltage regulator can be adjusted independently through the repair of the output voltage, voltage output range of 1.3V to 5.0V, the maximum current up to 300mA. As the built-in transistor with low on-resistance, so dropout voltage is low, access to a larger output current. In order to make load current does not exceed the output transistor current capacity, built-in overload current protection circuit, short circuit protection circuit. Except input and output filter capacitor, LN5071 basically do not need any other external components, greatly reducing system development costs.●
APPLICATIONS
● Mobile phones● MP3,MP4,MP5
● Cordless phones and radio communicatio...