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BP1601 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BP1601
기능 Step-Up Constant Current LED Driver
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BP1601 데이터시트, 핀배열, 회로
Description
Applications
BP1601 is a step-up DC/DC converter designed to
drive high brightness LED from 4.5V to 24VDC
input voltage . Typically in 12VDC input voltage, up
to seven 1W LED strings is able to be drived.
BP1601 works in current mode to control LED
current, it set the LED current by sense resistor, this
low-side sensing strategy is used to minimize the
power dissipation and improve system efficiency.
BP1601 detects the OV pin voltage to provide open
circuit protection.
The BP1601 includes under-voltage lockout, current
limiting and thermal overload protection preventing
damage in the event of an output overload.
BP1601 is assembled in SOP-8PP package, which
provides excellent heat dissipation and thermal
performance.
Solar LED lighting
Portable LED lighting
LCD LED backlight
Features
4.5V~24V input voltage range
Up to seven 1W LED strings is drived when
VIN=12V
Higher than 90% efficiency
Less than 1uA MOSFET leakage current
200mV current sense voltage
1A current limit
Soft start
Input under-voltage lockout
Output over-voltage protection
Internal over-temperature protection
PWM and analog Dimming
Typical Application
Figure 1 typical application circuit
BP1601_DS_EN V1.0 Jul 2010
www.bpsemi.com
Page 1
Free Datasheet http://www.Datasheet4U.com




BP1601 pdf, 반도체, 판매, 대치품
Electrical Characteristics (note4, 5) (VIN=12V, TA =25 °C unless otherwise stated)
Symbol
Parameter
Conditions Min. Typ. Max. Unit
Power supply
VIN
VUVLO
VUVLO, HYS
Input Voltage
Under voltage lock out
UVLO hysteresis
VIN falling
VIN rising
4.5 24 V
3.9 V
200 mV
Feedback
VFB
IBIAS
Feedback voltage threshold
Feedback bias current
190 200 210 mV
0.05 1 uA
Operation Current
IOFF Shut down current
ISTBY
Quiescent current
IOP Operation current
FSW Switch frequency
DMAX
Maximum duty cycle
VSW-ON =0V
0.1
VFB=0.5V
100
1
0.6 0.8
VFB=0V
85 95
1 µA
µA
mA
1 MHz
%
Chip Enable
VEN_H
VEN_L
REN
“EN” logic high voltage
“EN” logic low voltage
Pull-down resistance
2V
0.4 V
300 K
MOSFET
RON
ILIMIT
ILEAK
Switch “ON” resistance
Maximum MOSFET current
Switch leakage current
Vin=5V
0.8
1A
0.01 µA
Over voltage protection
VOV Over-voltage detect Threshold
VOV_HYS
Over-voltage detect Hysteresis
25 28
6
V
V
Soft start
tSST
Soft start time
300 Us
Over temperature protection
TSD
TSD-hys
Thermal shutdown Threshold
Thermal shutdown Hysteresis
TSD
TSD-hys
150
30
Note 4:Production testing of the chip is performed at 25°C.
Note 5:The maximum and minimum parameters specified are guaranteed by test, the typical value are guaranteed by design, characterization and
statistical analysis
BP1601_DS_EN V1.0 Jul 2010
www.bpsemi.com
Page 4
Free Datasheet http://www.Datasheet4U.com

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BP1601 전자부품, 판매, 대치품
current is zero. As a result, the average current is in
proportion to the Duty cycle DPWM.
PCB layout
Good PCB layout is critical to system performance.
Several of skills is recommended to be used in the
layout:
1 Increase the GND plane area to decrease the
noise decoupling between signal route, it also
bypass some high frequency noise.
2 We recommend not to share the feedback resistor
ground return with other GND route to get a clean
feedback signal. The feedback resistor should be
connected to the GND pin directly.
3 The high frequency loop area should be kept as
small as possible. SW pin gets sharp rising edge
and falling edge ,the trace to SW pin is required to
be as short as possible to get better EMI result.
BP1601_DS_EN V1.0 Jul 2010
www.bpsemi.com
Page 7
Free Datasheet http://www.Datasheet4U.com

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관련 데이터시트

부품번호상세설명 및 기능제조사
BP1601

Step-Up Constant Current LED Driver

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BPS
BP1601

Low-voltage constant current driver chip

Jing Feng Electronic
Jing Feng Electronic

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