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BM0150 데이터시트 PDF




Bookly에서 제조한 전자 부품 BM0150은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 BM0150 기능
기능 1.5A POWER LED DRIVER
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BM0150 데이터시트, 핀배열, 회로
BM0150
1.5A POWER LED DRIVER
DESCRIPTION
FEATURES
BM0150 is a PWM power LED driver IC. The
driving current from few milliamps up to 1.5A. It allows
high brightness power LED operating at high efficiency
from 3.6Vdc to 40Vdc. Up to 200KHz external controlled
operation frequency. External resistor controlled the
maximum output current to single LED or a LED string.
„ Only 5 external components required.
„ Output driving current up to 1.5A.
„ 3.6V~40V wide operation voltage range.
„ High efficiency
„ ESD protection HBM 3KV
„ TO-252 5-pin power package.
APPLICATIONS
„ DC/DC LED driver
„ Automotive
„ Lighting
TYPICAL APPLICATION
PACKAGE PIN OUT
5 OSC
4 OUT
3 GND
2 CS
1 VCC
TO-252-5L (Top View)
3.6V~40V
Rsense
CIN
CT
VCC
CS OUT
OSC BM0150
GND
DF
L
ORDER INFORMATION
TR TO-252
5-pin
BM0150-T (80pcs/ tube , tube)
BM0150-R (2500pcs/ reel , tape & reel)
Note: 1. All surface-mount packages are available in Tape & Reel. Append the letter “” to part number (i.e. AMC7150DLT).
2. The letter ”F” is marked for Lead Free process.
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BM0150 pdf, 반도체, 판매, 대치품
BM0150
APPLICATION INFORMATION
Low Voltage DC/DC Application
The BM0150 was designed for power LED driving application. Only 5 external components were required for
low voltage application. Fig.1 shows the typical application circuit for input voltage range from 3.6V to 40V. Buck power
conversion topology was used and total forward voltage (at expecting current) of the LED string should lower than
supply voltage by 1.6V at least.
3.6V~40V
Rsense
VCC
CS OUT
L
CIN
CT
OSC BM0150
GND
DF
Input Bypass Capacitor
The input by-pass capacitor CIN holds the input voltage and filters out the switching noise of BM0150.
Flywheel Diode
The fast recovery diode was recommended for flywheel diode DF. This is because the high reverse recovery
current will cause the voltage drop across Rsense being higher than 330mV, and consequently the switch will be turned
off which has just been turned on.
LED Driving Current
The peak current IPK flow though LEDs was decided by:
I PK
=
300mV
Rsense
The average current on LEDs was determined by the peak-to-peak ripple current that was decided by inductor L.
Assume the target average current 550mA on LEDs and ripple current 100mA then the Rsense should be:
Rsense =
300mV
= 0.50
550mA + 0.5 100mA
The Rsense value should higher than 200mΩ so that driving current won’t over the recommended maximum driving
current 1.5A. Usually ,the power consumption on this resistor is around 0.2W ~ 1W , depend on the current.
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1.5A POWER LED DRIVER

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