Datasheet Details
| Part number | BM0246A |
|---|---|
| Manufacturer | BOOKLY |
| File Size | 140.12 KB |
| Description | White LED Step-Up Converter |
| Datasheet | BM0246A-BOOKLY.pdf |
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Overview: BOOST IC (LED DRIVER) BM0246A White LED Step-Up Converter BM0246A is a step-up DC/DC converter ¾ specifically designed to drive white LED with a ¾ ¾ constant current. It can drive two,three,or four ¾ LEDS. It switches at 1.4MHz and use tiny ¾ external ponents. The output capacitor can ¾ be as small as 0.22uF,which can save space ¾ and cost versus alternative solutions. Feedback ¾ voltage is as low as 105mV. Built-in OverVoltage ¾ OverVoltage Function Fast 1.4MHz Switching Frequency Requires Only 0.22uF Output Capacitor Inherently Matched LED Current High Efficiency: 90% Typical 2.5V to 16V VIN ranges Drives Up to Four series LEDs with a Li-lon cell PIN TO PIN with RT9271 and AIC1896, D246 SOT-26 Package function.
| Part number | BM0246A |
|---|---|
| Manufacturer | BOOKLY |
| File Size | 140.12 KB |
| Description | White LED Step-Up Converter |
| Datasheet | BM0246A-BOOKLY.pdf |
|
|
|
6 5 1：Switch 4 2：GND 3：Feedback ※ Symbol Description 6：Supply SW Voltage GND 5：Over Voltage Symbol VIN OVP FB 4：Start-Up CE Page 1 of 8 BOOST IC (LED DRIVER) Block Diagram BM0246A PIN4 PWM CONTROL Fosc PIN6(VIN) VREF SHUTDOWN CURRENT SENSE + SLOPE P + - gm PIN1(SW) PIN5(OVP) 0 0 0 PIN2(GND) PIN3(FB) + - + BM0246 ※ ※ Page 2 of 8 BOOST IC (LED DRIVER) BM0246A Electrical Characteristics Tamb = 25℃, VIN=3V，VCE=3V,unless otherwise specified.
Parameter Test Conditions / Pins Min Minimum Operating Voltage 2.5 Maximum Operating Voltage Feedback Voltage ISW=100mA, 104 Duty Cycle=66% FB Pin Bias Current 50 Supply Current Switching Frequency Maximum Duty Cycle OVP Protection Switch Current Limit Switch VCESAT Switch Leakage Current CE Voltage High CE Voltage Low CE Pin Bias Current Typical Application HI VCC VCE=0V 0.8 85 ISW =250mA VSW=5V 1.5 L1 1 2 22uH Type Max Unit V 10 V 115 1
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