BD60A00NUX
1/22
www.rohm.com
2011.12 - Rev.A
© 2011 ROHM Co., Ltd. All rights reserved.
LED Drivers for LCD Backlights
White Backlight LED Drivers
for Small to Medium LCD Panels
(Switching Regulator Type)
BD60A00NUX, BD60A60NUX
●
Description
This IC is boost DC/DC converter that can drive white LED with constant current. More stabled white LED lighting can be
achieved by direct current connection without electric tolerance and High-speed response by current mode. Moreover,
separating IC power supply (2.7V~5.5V) and coil power supply (2.3V~20V) makes it possible to widen input range, which
will be helpful to be applied to various kinds of applications. Over voltage setting can be selected corresponding to the
number of LED lightings. BD60A00NUX is for max 11 lightings, BD60A60NUX is for max 6 lightings.
●
Features
1) Boost DC/DC converter
2) Drive LED 11 lightings (VOUT=3.6V×11+0.7V=40.3V <Vf MAX=3.7V>) BD60A00NUX
3) Brightness control by outside PWM signal (PWM frequency =100Hz~30kHz, 25kHz 1% dimming application)
4) Brightness control by DC input
5) Soft start function (1ms typ.)
6) Over voltage protection 42V typ. ( BD60A00NUX), 28Vtyp.( BD60A60NUX)
7) SBD open protection and output short protection
8) Over current protection
9) LED terminal over voltage protection
10) UVLO
11) VSON008x2030 package (2.0mm × 3.0mm × 0.6mm MAX)
●
Applications
Digital video cameras, digital single-lens reflexes, digital still cameras, digital photo frames, personal navigations (PND),
mobile phones, smart phones, MID, PDA, hand-held computers, MP3 players, GPS, digital media players, etc.
●
Absolute maximum ratings
Parameter Symbol
Ratings
Unit Condition
Maximum applied voltage 1
VMAX1
7
V
Vin, EN, PWM, ISET terminals
Maximum applied voltage 2
VMAX2
45
V
FB, SW, Vout terminals
BD60A00NUX
Maximum applied voltage 2
VMAX3
31
V
FB, SW, Vout terminals
BD60A60NUX
Operating temperature range
Topr
-40 ~ +85
℃
Storage temperature range
Tstg
-55 ~ +150
℃
Power dissipation 1
Pd1
2000
mW
*1
*1 4 layer (ROHM Standard board) has been mounted. When it’s used by more than Ta=25
℃
, it’s reduced by 20mW/
˚
C.
●
Recommended operating range (Ta=-40
℃
~ +85
℃
)
Parameter Symbol
Ratings
Unit Conditions
Operating power supply voltage
VIN
2.7 ~ 5.5 *
V
Vin terminal
Operating coil voltage
Vcoil
2.3 ~ 20
V
Coil voltage
*When the operating supply voltage is over 4.61V for BD60A00NUX, please refer the application P.17
No.11040EAT42
