BL8503-25PRM

BL8503 series is a group of positive voltage output, low power consumption, low dropout voltage, three terminal regulator. It can provide 250mA output current when input / output voltage differential drops to 400mV （Vin = 4.0V、Vout = 3.0V）. The very low power consumption of BL8503 （Iq = 3.0uA）can greatly improve natural life of batteries. BL8503 can provide output value in the range of 1.2V～6.0V in 0.1V steps. It also can customized on command. BL8503 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. BL8503 has well load transient response and good temperature characteristic, which can assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy within ±2%. BL8503 is available in SOT-89-3、SOT23-3,TO-92 packages which is lead free，it also can available in these packages with lead. BL8503 is a series of low dropout voltage and low power consumption three pins regulator. Its application circuit is very simple, which only needs two outside capacitors. It is composed of these modules: high accuracy voltage reference, current limit circuit, error amplifier, output driver and power transistor. Current Limit module can keep chip and power system away from danger when load current is more than 250mA. BL8503 uses trimming technique to assure the accuracy of output value within ±2%, at the same time, temperature compensated is elaborately considered in this chip, which makes BL8503’s temperature coefficient within 50ppm/℃.

Applications

• Battery Powered equipment
• Power Management of MP3、PDA、DSC、Mouse、PS2 Games
• Reference Voltage Source
• Regulation after Switching Power

Key features

• Low Power Consumption：3.0uA（Typ.）
• Maximum Output Current：250mA
• Small Dropout Voltage：170mV@100mA (Vout = 3.0V)；400mV@250mA (Vout = 3.0V)
• Input Voltage Range：1.5V～10V
• Output Voltage Range：1.2V～6.0V （customized on command in 0.1V steps）
• Highly Accurate：±2% (±1% customized)
• Output Current Limit