BD65B60GWL Datasheet, PDF (1/51 Pages) Rohm – White LED Driver

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
f_SW1 = 1.1MHz(Typ.), f_SW2 = 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
VIO
VOUT
SCL BD65B60GWL
LED1
SDA
LED2
RESET
GND ISET
PWM
RSET
PWMIN
●Pin Configuration (Bottom View)
D
SW
VOUT LED2
C
GND RESET LED1
B
VBAT PWM
SCL
A
ISET
VIO
SDA
1
2
3
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
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TSZ02201-0G3G0C210420-1-2
3.JUN.2013 Rev.001