BD6155FVM-TR Rohm Semiconductor, BD6155FVM-TR Datasheet - Page 6

• Manufacturer Part Number: BD6155FVM-TR
• Description: IC LED DRIVER DC/DC CONV 8MSOP
• Manufacturer: Rohm Semiconductor

Specifications of BD6155FVM-TR

• Constant Current: Yes
• Topology: Switched Capacitor (Charge Pump)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 120kHz
• Voltage - Supply: 2.9 V ~ 5.5 V
• Voltage - Output: 5.6V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP
• Operating Temperature: -25°C ~ 75°C
• Current - Output / Channel: 80mA
• Internal Switch(s): *
• Efficiency: *
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Communication ICs
! ! ! ! Application example
! ! ! ! Attached components
(1) We recommend capacitor with lower ESR.
(2) We recommend capacitor with is good characteristics to temperature.
(3) Mount all capacitor as close together as possible.
! ! ! ! Operation notes
(1) The notes in power supply turning on.
(2) Patern layout
(3) Though this product is carefully checked for quality assurance, however if it exceeds the absolute maximum rating
(4) GND
(5) Thermal design
(6) Misplacement and short-circuit between pins
A coupling capacitor, which lowers power supply impedance will make it decline.
Turn STBY pin (pin3) in the low state with power supply.
From this sequence, current flowing to the LED terminal is prevented.
Make wiring for power supply, GND and – GND short and thick. Take into considerations the power supply ripple.
such as applied voltage and operating temperature range, this IC may be deteriorated or damaged. One this IC is
damaged, short-circuits and open modes can not be identified. If the usage of the devices involves operations which
will exceed the absolute maximum rating, then it is necessary to take safety measures such as a fuse to protect the
device.
Electric potential as the GND pin must be minimum in any operating condition. Keep the electric potential of the GND
pin below that of the other pins except GND pin in consideration of transient phenomenon.
Be careful to ensure adequate margins for thermal design in consideration of power dissipation (Pd) in actual
operating mode.
When you put the IC on the print-circuit board, please be careful of the direction and correct placement of the IC.
If the IC is placed wrongly, IC may be damaged. And also, the IC may be damaged if an alien substance is mixed into
the line (output-output or output-GND) to be short.
CURRENT1
CURRENT2
STBY
LEDS
RSENS
2.7Ω
1
2
3
4
CURRENT
CONT
CHARGE
DRIVER
PUMP
8
7
6
5
V
C
GND
LED
BAT
1µF
1µF
C1
1µF
C2
C3
BD6155FVM
D1
(RB521S30)
D2
(RB521S30)
V
OUT
6/7