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BD6062GU
Technical data
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ROHM BD6062GU Technical data

System LED Drivers for Mobile phones
Chopper type for Flash
●Description
The BD6062GU is 1A Flash LED Driver ICs that can drive 1LED. It is possible to select how to control, 2wired control mode (Direct Control Mode) or 3wired mode (Register Control Mode). The BD6062GU has original Timer function in 3wired mode and easily set pre-flash timer and flash timer.
●Features
1) 400mA ~ 800mA selectable in Flash mode (Register Control Mode)
2) 50 ~ 200mA Torch mode (Register Control Mode)
3) 800mA in Flash mode (Direct control Mode)
4) 200mA in Torch mode (Direct control Mode)
5) Maximum current of LED is 1A in both Flash and Torch mode
6) 3Wired Mode and Direct control Mode selectable
7) In 3Wired Mode, Pre-Flash Timer and Flash Timer controllable
8) In 3Wired Mode, Flash current and Torch current is controllable
9) Over voltage protection
10) CSP 23pin Small and Thin package
●Applications
Flash and torch of camera for mobile phone
●Line up matrix
Parameter BD6062GU
Input voltage 2.7 ~ 5.5V
No.11041EBT13
Switching Frequency 480 ~ 720kHz
Maximum LED Current 1A
Package VCSP85H2
●Absolute maximum ratings (Ta=25℃)
Parameter Symbol Ratings Unit Condition
Maximum applied voltage VMAX 7 V VBAT, VIO
Power dissipation Pd 1100 *1 mW
Operating temperature range Topr -30~+85 ℃
Storage temperature range Tstg -55~+150 ℃
*1 50mm × 58mm × 1.75mm At glass epoxy board mounting. When it’s used by more than Ta=25℃, it’s reduced by 11mW/℃
●Recommended operating range (Ta= -30℃ ~ +85℃)
Parameter Symbol
Power Supply Voltage VDD 2.7 3.6 5.5 V *2
IO Supply Voltage VIO 1.62 1.8 3.3 V *
*2 VBAT  VIO
Min. Typ. Max.
Ratings
Unit Condition
2
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© 2011 ROHM Co., Ltd. All rights reserved.
1/15
2011.05 - Rev.B
BD6062GU
●Electrical characteristics (Unless otherwise noted, Ta = +25℃, VBAT=3.6V, VIO=1.8V)
Parameter Symbol
[Logic control terminal (IFMODE=’L’, 3wired control mode)]
Low threshold voltage1 VthL1 - - VIO* 0.25 V
High threshold voltage1 VthH1 VIO* 0.75 - - V
High level Input current1 IinH1 - - 5 A Vin=VIO
Low level Input current1 IinL1 -5 - - A Vin=0V
[Logic control terminal (IFMODE=’H’, Direct control mode)]
Low threshold voltage2 VthL2 - - 0.4 V
High threshold voltage2 VthH2 1.4 - - V
High level Input current2 IinH2 - 18.3 30 A FLASH=TORCH=5.5V
Low level Input current2 IinL2 -2 -0.1 - A FLASH=TORCH=0V
Min. Typ. Max.
Limits
Units Condition
Technical Note
[Others]
Input voltage range Vin 3.1 - 5.5 V VBAT input range
Quiescent Current Iq - 5 10 A Torch=Flash= OFF
Current Consumption Idd1 - 1.8 2.5 mA
Inductor current limit Icoil 1.5 2.0 2.5 A Vin=3.6V *3
Switching frequency fSW 480 600 720 kHz
SW ON resistance Ron - 0.07 0.15 Iin=200mA
Duty cycle limit Duty 60 65 - % VFB=0V
Output voltage range Vo - - 5.4 V
Over voltage limit Ovl 5.4 5.5 5.6 V VFB=0V
Start up time Ts 0.5 1.0 ms 0mA to 200mA(Torch)
R torch terminal voltage 1 Vrt1 45 50 55 mV Itorch[1:0]=00 (50mA)
R torch terminal voltage 2 Vrt2 90 100 110 mV Itorch[1:0]=01 (100mA)
VFB=1.0V, Vin=3.6V, Torch mode
R torch terminal voltage 3 Vrt3 135 150 165 mV Itorch[1:0]=10 (150mA)
R torch terminal voltage 4 Vrt4 180 200 220 mV Itorch[1:0]=11 (200mA)
R flash terminal voltage 1 Vrf1 43 48 53 mV Iflash[1:0]=00 (400mA)
R flash terminal voltage 2 Vrf2 54 60 66 mV Iflash[1:0]=01 (500mA)
R flash terminal voltage 3 Vrf3 65 72 79 mV Iflash[1:0]=10 (600mA)
R flash terminal voltage 4 Vrf4 86 96 106 mV Iflash[1:0]=11 (800mA)
*3 This parameter is tested with dc measurement.
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© 2011 ROHM Co., Ltd. All rights reserved.
2/15
2011.05 - Rev.B
BD6062GU
●Electrical characteristic curves (Reference data)
0.1
0.08
0.06
0.04
Ta= 8 5° C
0.02
STAND-BY CURRENT : lstb[A]
0
33.544.555.5
INPUT VOLTAGE : VBAT[V]
Ta= 2 5° C Ta= - 30 °C
Fig.1 Quiescent current consumption
(VBAT)
Fig.2 Quiescent current consumption
3
2.4
1.8
1.2
0.6
CURRENT CONSUMPTION: ldd[mA]
0
01234567
INPUT VOLTAGE : VBAT[V]
Ta= 2 5° C
Ta= 8 5° C
Ta= - 30 °C
Fig.4 Current consumption(VBAT)
CURRENT LIMIT : llimit[A]
100
VBAT=3.6V
90
EFFICIENCY [%]
80
70
60
50
VBAT=3.0V
0 200 400 600 800 1000
LED CURRENT : ILED[mA]
VBAT=4.2V
VBAT=2.7V
Fig.7 1A appli. Efficiency
(Ta = 25°C)
100
EFFICIENCY [%]
95
90
85
80
75
70
TDK Coil
Taiyo Yuden Coil
Panasonic Coil
0 200 400 600 800 1000
LED CURRENT : ILED[mA]
Fig.10 Each Coil Efficiency
(Ta = 25°C, VBAT = 3.6V)
0.1
0.08
0.06
0.04
0.02
STAND-BY CURRENT: lstb_VIO[A]
0
012345
INPUT VOLTAGE : VBAT[V]
Ta= 8 5° C Ta= 2 5° C Ta= - 30 °C
(VIO)
2.5
2.25
2
1.75
1.5
33.544.555.5
INPUT VOLTAGE : VBAT[V]
Ta= 2 5° C
Ta= 8 5° C
Ta= - 30 °C
Fig.5 Over-Current Limiter
100
VBAT=3.6V
VBAT=3.0V
0 200 400 600 800 1000
LED CURRENT : ILED[mA]
EFFICIENCY [%]
90
80
70
60
50
VBAT=4.2V
VBAT=2.7V
Fig.8 1A appli. Efficiency
(Ta = 85°C)
100
95
90
85
TDK Coil
80
EFFICIENCY [%]
75
70
0 200 400 600 800 1000
LED CURRENT : ILED[mA]
Taiyo Yuden Coil
Panasonic Coil
Fig.11 Each Coil Efficiency
(Ta = 85°C, VBAT = 3.6V)
Technical Note
0.1
0.08
0.06
0.04
0.02
0
STAND-BY CURRENT : lstb_OVP[A]
012345
INPUT VOLTAGE : VBAT[V]
Fig.3 Quiescent current consumption
(OVP)
700
650
600
FSW[kHz]
550
SWITCHING FREQUENCY :
500
22.533.544.555.5
Ta= 2 5° C
INPUT VOLTAGE : VBAT[V]
Fig.6 Switching Frequency
100
VBAT=3.6V
90
EFFICIENCY [%]
80
70
60
50
VBAT=3.0V
0 200 400 600 800 1000
LED CURRENT : ILED[mA]
Fig.9 1A appli. Efficiency
(Ta = -30°C)
100
95
90
85
Taiyo Yuden Coil
80
EFFICIENCY [%]
75
70
0 200 400 600 800 1000
LED CURRENT : ILED[mA]
Fig.12 Each Coil Efficiency
(Ta = -30°C, VBAT = 3.6V)
Ta= 8 5° C Ta= 2 5° C Ta= - 30 °C
Ta= 8 5° C
Ta= - 30 °C
VBAT=4.2V
VBAT=2.7V
TDK Coil
Panasonic Coil
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© 2011 ROHM Co., Ltd. All rights reserved.
3/15
2011.05 - Rev.B
BD6062GU
●Electrical characteristic curves (Reference data) – Continued
0.22
0.21
0.2
Ta= 8 5° C
Ta= 2 5° C Ta= - 30 °C
0.22
0.21
0.2
Ta= 8 5° C
Ta= 2 5° C Ta= - 30 °C
TFB VOLTAGE : VTFB[V]
0.19
0.18
0 50 100 150 200 250
TFB CURRENT : ITFB[mA]
0.19
TFB VOLTAGE: VTFB[V]
0.18
0 50 100 150 200 250
TFB CURRENT : ITFB[mA]
Fig.13 TORCH Load Regulation
(VBAT = 5.5V)
Fig.14 TORCH Load Regulation
(VBAT = 3.6V)
100
100
95
Ta= - 30 °C
90
85
FFB VOLTAGE : VFFB[mV]
80
0 300 600 900 1200
FFB CURRENT : IFFB[mA]
Fig.16 FLASH Load Regulation
(VBAT = 5.5V)
Ta= 2 5° C
Ta= 8 5° C
95
90
85
FFB VOLTAGE: VFFB[mV]
80
0 300 600 900 1200
FFB CURRENT : IFFB[mA]
Ta= - 30 °C
Ta= 8 5° C
Ta= 2 5° C
Fig.17 FLASH Load Regulation
(VBAT = 3.6V)
OUTPUT VOLTAGE [500mV/div]
TORCH/FLASH Terminal (VBAT) [500mV/div]
INPUT CURRENT [200mA/div]
LED CURRENT [200mA/div]
TORCH/FLASH Terminal (VBAT) [500mV/div]
OUTPUT VOLTAGE [500mV/div]
INPUT CURRENT [200mA/div]
LED CURRENT [200mA/div]
0V, 0A 0V, 0A 0V, 0A
200µs/div
200µs/div
Fig.19 500mA Input rush current
(VBAT=3.0V)
Fig.20 500mA Input rush current
(VBAT=3.6V)
OUTPUT VOLTAGE [500mV/div]
TORCH/FLASH Terminal (VBAT) 500mV/div]
LED CURRENT [200mA/div]
INPUT CURRENT [500mA/div]
Fig.22 1A Input rush current
(200mA 1A)
Technical Note
0.22
0.21
0.2
0.19
TFB VOLTAGE: VTFB[V]
0.18
0 50 100 150 200 250
Fig.15 TORCH Load Regulation
100
95
Ta= - 30 °C
90
85
FFB VOLTAGE: VFFB[mV]
80
0 300 600 900 1200
TFB CURRENT : ITFB[mA]
Fig.18 FLASH Load Regulation
Fig.21 500mA Input rush current
Ta= 8 5° C
Ta= 2 5° C Ta= - 30 °C
TFB CURRENT : ITFB[mA]
(VBAT = 2.7V)
Ta= 8 5° C
Ta= 2 5° C
(VBAT = 2.7V)
TORCH/FLASH Terminal (VBAT) [1V/div]
OUTPUT VOLTAGE [1A/div]
INPUT CURRENT [200mA/div]
LED CURRENT [200mA/div]
200µs/div
(VBAT=4.5V)
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© 2011 ROHM Co., Ltd. All rights reserved.
4/15
2011.05 - Rev.B
BD6062GU
A
●Block diagram and pin configuration
VIO
osc
slope
Q
R
Q
S
TORCH (CS)
CLK
CSDI
FLASH
(RSTB)
IFMODE
TEST
Control
CURDRV
TORCH
OPEN
OVP
CURDRV
FLASH
Fig.23 1A application Block diagram of
Direct control Mode
VIO
Q
osc
slope
R
S
Q
TORCH (CS)
CLK
CSDI
FLASH
(RSTB)
IFMODE
TEST
Control
CURDRV
TORCH
OPEN
OVP
CURDRV
FLASH
Fig.25 500mA application Block diagram of
Direct control Mode
Technical Note
R
S
CURDRV
FLASH
R
S
CURDRV
FLASH
VBAT
2.2µF
(6.3V)
GND
SW1
Q
Q
Q
Q
SW2
PGND1
PGND2
VFB
RFLASH
FFB
RTORCH
TFB
GNDSENS
OVP
VBAT
4.7µF
(6.3V)
GND
SW1
SW2
PGND1
PGND2
VFB
RFLASH
FFB
RTORCH
TFB
GNDSENS
OVP
4.7µH
SBD
1 0.12
4.7µH
SBD
2 0.24
Battery
Battery
47µF
(6.3V)
22µF
(6.3V)
VBAT
2.2µF
(6.3V)
GND
SW1
SW2
PGND1
PGND2
VFB
RFLASH
FFB
RTORCH
TFB
GNDSENS
OVP
4.7µH
SBD
1 0.12
Battery
47µF
(6.3V)
TORCH (CS)
RSTB
(FLASH)
IFMODE
CSDI
TEST
VIO
osc
slope
CURDRV
TORCH
CLK
Control
OVP
OPEN
Fig.24 1A application Block diagram of
3wired control Mode
22µF
(6.3V)
VIO
osc
slope
CURDRV
TORCH (CS)
CLK
CSDI
FLASH
(RSTB)
IFMODE
TEST
Control
TORCH
OVP
OPEN
VBAT
4.7µF
(6.3V)
GND
SW1
SW2
PGND1
PGND2
VFB
RFLASH
FFB
RTORCH
TFB
GNDSENS
OVP
Battery
4.7µH
SBD
2 0.24
Fig.26 500mA application Block diagram of
3wired control Mode
5
4
3
2
B
N.C.
GND
SENS
FTB
RSTB/ FLASH
SW2
SW1
IFMODE
C
VIO
CSDI
TFB
D E
PGND2
PGND1
OVP
TORCH
N.C.
CLK
VBAT
CS/
GND
1
TEST
RFLASH
VFB
RTORCH
N.C.
Fig.27 pin location diagram (TOP VIEW)
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© 2011 ROHM Co., Ltd. All rights reserved.
5/15
2011.05 - Rev.B
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