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Rohm Semiconductor Electronic Components Datasheet

BD6072HFN Datasheet

White LED Driver

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Datasheet
White LED Driver
with Synchronous Boost Converter
and PWM Brightness Control for up to 4 LEDs in Series
BD6072HFN
General Description
BD6072HFN is boost DC/DC converter possible to
boost output voltage up to 18V (Max.) and drive the
white LEDs at constant. It is possible that turning on
white LED steadily by a series connection which has no
current variation, and by a fast transient response with
current mode. And, BD6072HFN is white LED driver IC
with synchronous rectification. With synchronous
rectification (no external schottky diode required) and
small package, they can save mount space.
Key Specifications
Operating power supply voltage range: 2.7V to 5.5V
Switching frequency:
1MHz(Typ.)
Quiescent Current:
0.1μA (Typ.)
Operating temperature range:
-30°C to +85°C
Package W(Typ.) x D(Typ.) x H(Max)
Features
Boost DC/DC converter
Adjustment of brightness by external PWM pulse
Possible to driving 4 LEDs
Soft start function
Synchronous rectification Boost DC/DC converter
No external schottky diode required
Output Open • Short protect
HSON8
2.90mm x 3.00mm x 0.60mm
Applications
This driver is applicable for various fields such as
mobile phones, portable game machines, Inter-phone
camera, audio player, portable DVD player, back light
for printer display etc… and support light of the camera
for the mobile phone, simple flash. And, these can use
power supply for OEL
Typical Application Circuit
VIN
CIN
1μF
L
22μH
VIN SW
BD6072HFN
GND GNDA
EN TEST
VOUT
COUT
1μF
Pin Configuration [Top View]
White LED
8 76 5
VFB
RFB
24
1 23 4
Figure 1. Pin configuration HSON8 (Top view)
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/15
TSZ02201-0G3G0C200390-1-2
12.OCT.2012 Rev.001


Rohm Semiconductor Electronic Components Datasheet

BD6072HFN Datasheet

White LED Driver

No Preview Available !

BD6072HFN
Datasheet
Absolute Maximum Ratings (Ta=25°C)
Parameter
Symbol
Terminal voltage 1
VMAX1
Terminal voltage 2
VMAX2
Power dissipation
Pd
Operating temperature range
Topr
Ratings
7 *1
20 *1
630 *2
-30 ~ +85
Unit Conditions
V VIN,EN,VFB,TEST pins
V SW,VOUT pins
mW
70mm×70mm×1.6mm
At glass epoxy board mounting.
°C
Storage temperature range
Tstg -55 ~ +150
*1 These values are based on GND and GNDA pins.
*2 When it’s used by more than Ta=25°C, it’s reduced by 5.04mW/°C.
Recommended Operating Ratings (Ta=-30°C to +85°C)
Parameter
Operating supply voltage
Symbol
VIN
Min.
2.7
Ratings
Typ.
3.6
Max.
5.5
°C
Unit Conditions
V VIN pin
Electrical Characteristics (Unless otherwise specified Ta = +25°C, VIN=3.6V)
Parameter
Limits
Symbol
Min. Typ. Max.
<EN terminal>
Unit
EN threshold voltage (Low)
VthL
-
- 0.4 V
EN threshold voltage (High)
VthH
1.4
-
-V
EN terminal input current
Iin - 18.3 30.0 μA
EN terminal output current
Iout -2.0 -0.1
-
μA
<Switching regulator>
Quiescent Current
Iq - 0.1 2.0 μA
Current Consumption
Idd - 1.1 1.5 mA
Feedback voltage
VFB 0.47 0.50 0.53 V
Inductor current limit
Icoil 270 350 430 mA
SW saturation voltage
Vsat
-
0.14 0.28
V
SW on resistance P
Ronp
-
2.1 3.2
Switching frequency
fSW 0.8 1.0 1.2 MHz
Duty cycle limit
Duty 82.7 85.0
-
%
Output voltage range
Vo - - 18.0 V
Over voltage limit
Ovl 18.0 18.5 19.0 V
Start up time
Ts
*1 This parameter is tested with dc measurement.
- 0.5 1.0 ms
Conditions
EN=5.5V
EN=0V
EN=0V
EN=2.6V,VFB=1.0V,VIN=3.6V
VIN=3.6V *1
Isw=200mA, VOUT=13V
Ipch=200mA,VOUT=13V
VFB=0V
VFB=0V
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/15
TSZ02201-0G3G0C200390-1-2
12.OCT.2012 Rev.001


Part Number BD6072HFN
Description White LED Driver
Maker ROHM
Total Page 18 Pages
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