BD6062GU_11 ROHM [Rohm], BD6062GU_11 Datasheet - Page 9

• Manufacturer Part Number: BD6062GU_11
• Description: Chopper type for Flash
• Manufacturer: ROHM [Rohm]

© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com
BD6062GU
It depends on battery or external components condition, internal power consumption will be large at flash action and there is
a possibility that it will over Power dissipation of IC.
BD6062GU can limit drive current on over power condition, and protect to over Power dissipation.
When this mode is enable, BD6062GU limit maximum current automatically as below.
3) Power Control
4) LED drive current (Torch Mode)
5) LED drive current (Flash Mode)
6) Basic function
BD6062GU can be controlled the status of activation using Enable control resistor.
The LED current is decided by the voltage of RTORCH terminal. (Rtorch=1.0Ω)
ILED is given as follows,
VRTORCH is controlled 0.05V~0.2V by resistor setting.
The LED current is decided by the voltage of RFLASH terminal and RTORCH terminal.
(Rflash=0.12Ω, Rtorch=1.0Ω)
ILED is given as follows,
VRFLASH is controlled 0.048V~0.096V by resistor setting.
i) Register control interface(3wired) mode (timer enable)
ILED= I(Torch Current Driver)=VRTORCH / 1.0(Ω)
VRTORCH =0.05V,
VRTORCH =0.2V,
ILED= I(Flash Current Driver)+I(Torch Current Driver) =VRFLASH/0.12(Ω)+VRTORCH / 1.0(Ω)
VRFLASH=0.096V,
VRTORCH=0.2V,
Torch
Flash
(Address : 00 (H), D[0])
(Address : 00 (H), D[1])
I
(0mA)
Torch
Flash
LED
Max200mA  Max200mA
Max800mA  400mA
Rflash =0.12Ω,
Rtorch =1.0Ω,
Rtorch =1.0Ω, ILED=200mA
Rtorch =1.0Ω, ILED=50mA
Fig.29 3wired mode Torch and Flash Timing (Timer enable)
ILED1 : Torch Current Driver
ILED2 : Forch Current Driver
tFLASH1,2 : Flash time is controlled by timer resistor setting.
I
LED1
Itorch[1:0]=11
Iflash[1:0]=11
I
LED2
9/15
t
FLASH1
: Itorch [1:0] = 00
: Itorch [1:0] = 11
t
FLASH2
ILED=200mA+800mA=1000mA
Technical Note
2011.05 - Rev.B