900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Rohm Semiconductor Electronic Components Datasheet

BD65B60GWL Datasheet

White LED Driver

No Preview Available !

Datasheet
Max. 28.5V Output 2Strings(25mA/ch)
White LED Driver
BD65B60GWL
General Description
BD65B60 is a white LED driver IC that integrates PWM
step-up DC/DC converter with boost-capability of up to
maximum 28.5V and current driver with drive capability of up
to 25mA(Typ.) maximum setting. Precise brightness can be
controlled at wide ranges through the external PWM pulse
input.
This IC features highly accurate current drivers with low
differential current errors between channels, thus, reducing
brightness spots on the LCD panel. Moreover, its small
package is suited for saving space.
Features
High efficiency PWM step-up DC/DC converter
fSW1 = 1.1MHz(Typ.), fSW2 = 0.60MHz(Typ.)
High accuracy & good matching current drivers (2ch)
Soft Start function
Drives up to 8 LEDs in series per channel
Lower input voltage range requirement (2.7V to 5.5V)
Applications
Backlight for smartphones, games, digital video cameras,
digital single-lens reflexes, digital still cameras, digital photo
frames, Portable DVD player, etc.
Key Specifications
Input voltage range:
2.7V to 5.5V
Output voltage range:
Max. 28.5V
Operational LED Channel:
2ch or 1ch
Switching frequency:
0.6MHz/1.1MHz(Typ.)
LED Current per Channel:
25mA (Max.)
LED current accuracy:
±3.0% (Max.)
Quiescent current
0μA (Typ.)
Operating temperature range:
-40°C to +85°C
Package
W(Typ.) x D(Typ.) x H(Max.)
UCSP50L1 (12pin) 1.40mm x 1.80mm x 0.55mm
Typical Application Circuit
2.7V to 5.5V
CVBAT
10μH
COUT
1.65V to 3.3V
CVIO
Controller
VBAT
SW
VOUT
VIO
SCL BD65B60GWL
SDA
RESET
LED1
LED2
GND ISET
PWM
Pin Configuration (Bottom View)
D SW VOUT LED2
C GND RESET LED1
B
VBAT PWM
SCL
A ISET VIO SDA
123
RSET
PWMIN
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/47
TSZ02201-0G3G0C210420-1-2
3.JUN.2013 Rev.001


Rohm Semiconductor Electronic Components Datasheet

BD65B60GWL Datasheet

White LED Driver

No Preview Available !

BD65B60GWL
Pin Descriptions
PIN PIN
No. Name
A1 ISET
I/O Function
In Resistor Connection for LED Current setting
Terminal
diagram
A
A2 VIO
A3 SDA
VIO voltage Terminal. Connect a 1.65V to 3.3V
In supply to VIO and bypass to GND with a 0.1µF or
greater ceramic capacitor.
Serial Data input for I2C Interface
This pin is needed to connect external pull-up
In resistor to VIO pin.
Please refer to P.37 “SDA, SCL Pull-up Resistor
Selection.”
B1 VBAT
VBAT voltage Terminal. Connect a 2.7V to 5.5V
In supply to VBAT and bypass to GND with a
1.0µF(Typ.) or greater ceramic capacitor.
B2 PWM
B3 SCL
Input pin for controlling the current driver.
In This pin has an internal pull-down resistor.
Please refer to P.35 “Brightness Control”
Serial Clock input for I2C Interface
This pin is needed to connect external pull-up
In resistor to VIO pin.
Please refer to P.37 SDA, SCL Pull-up Resistor
Selection”.
C1 GND
- Power Ground for internal switching transistor
C2 RESET
C3 LED1
Active-low reset. Pull this pin high to enable the IC.
In
This pin is needed to connect external pull-down
resistor.
Please refer to P.29 “Functional Descriptions”
In
Input terminal to Internal Current Driver.
LED cathode connection.
Switching terminal where an external inductor is
connected. Internally connects to an NMOS switch.
D1 SW Out Connect the inductor as close as possible to SW
terminal to reduce parasitic inductance and
capacitance. Please refer to PCB layout of P.39.
D2 VOUT
Terminal for monitoring the output voltage of
switching regulator. Also, detects SBD open and
OVP. Please refer to P.31.
In Connect VOUT to the positive terminal of the output
capacitor (COUT). Recommended COUT value is
1.0µF(Typ.) for DC mode or 2.2µF(Typ.) for PWM
mode.
D3 LED2
In
Input terminal to Internal Current Driver.
LED cathode connection.
B
B
C
B
B
C
B
B
B
B
B
Datasheet
VBAT
PIN
GND
A
PIN
GND
B
VBAT
GND
C
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/47
TSZ02201-0G3G0C210420-1-2
3.JUN.2013 Rev.001


Part Number BD65B60GWL
Description White LED Driver
Maker ROHM
PDF Download

BD65B60GWL Datasheet PDF





Similar Datasheet

1 BD65B60GWL White LED Driver
ROHM





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy