BP1601 PDF даташит
Спецификация BP1601 изготовлена «BPS» и имеет функцию, называемую «Step-Up Constant Current LED Driver». |
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Детали детали
Номер произв | BP1601 |
Описание | Step-Up Constant Current LED Driver |
Производители | BPS |
логотип |
10 Pages
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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
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Pin configuration
Pin Description
Pin No.
1
2
3
Pin Name
GNDP
VIN
OV
4 EN
5 GNDA
6 FB
7 NC
8 SW
Ordering Information
Description
Power ground
Power supply of the chip, connect a bypass capacitor to ground as close
as possible
Output voltage detect. Protect the chip and system while LED is open.
PWM and analog dimming input. While connecting to logic” high” , chip
is enabled; While connecting to logic” low” more than 3ms,chip is
disabled; Be logic low while left floating. The PWM dimming signal
frequency should be higher than 20KHz.
Signal ground
Output current Feedback. Set the LED current by detecting the voltage in
the sense resistor. The voltage threshold is 200mV
Not connect
Drain of internal MOSFET
Order Number
BP1601EESO8
Package
SOP8-PP
Operating Temperature
Packing Method
Range
-40 oC to 85 oC
Tape and Reel
2,500 units
Marking
BP1601
xxxxxx
xxx
BP1601_DS_EN V1.0 Jul 2010
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Absolute Maximum Ratings (Note1)
Symbol
Parameters
Value
Unit
SW Drain of internal MOSFET
-0.3~36
V
FB
EN
OV
VIN
PDMAX
PTR
TJ
TSTG
Output current Feedback
Chip Enable voltage, dimming input
voltage
Output voltage detect
Power supply voltage
Power dissipation (note2)
Thermal resistance, SOP8-PP(θJA)
Operating temperature
Storage temperature
ESD Susceptibility (note3)
-0.3~6
-0.3~6
-0.3~36
-0.3~25
0.3
110
-40 to 150
-55 to 150
2
V
V
V
V
W
°C /W
°C
°C
kV
Note 1:Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. Under “recommended operating
conditions” the device operation is assured, but some particular parameter may not be achieved. The electrical characteristics table defines the operation
range of the device , the electrical characteristics is assured on DC and AC voltage by test program. For the parameters without minimum and
maximum value in the EC table ,the typical value define the operation range, the accuracy is not guaranteed by spec.
Note 2:The maximum power dissipation decrease if temperature rise, it is decided by TJMAX, θJA, and environment temperature(TA) . the maximum power
dissipation is the lower one between PDMAX = (TJMAX - TA)/ θJA and the number listed in the maximum table.
Note 3:Human Body mode,100pF capacitor discharge on 1.5kΩ resistor
BP1601_DS_EN V1.0 Jul 2010
www.bpsemi.com
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