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LM3697 Datasheet(PDF) 20 Page - Texas Instruments

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Part No. LM3697
Description  High-Efficiency Three-String White LED Driver
Download  36 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3697 Datasheet(HTML) 20 Page - Texas Instruments

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LM3697
SNOSCS2A – NOVEMBER 2013 – REVISED DECEMBER 2013
www.ti.com
LM3697 Register Descriptions
Table 2. LM3697 Register Descriptions
Name
Address
Power On Reset
Operation
Revision
0x00
0x00
Dynamic
Software Reset
0x01
0x00
Dynamic
HVLED Current Sink Output Configuration
0x10
0x06
Static
Control A Startup/Shutdown Ramp Time
0x11
0x00
Static
Control B Startup/Shutdown Ramp Time
0x12
0x00
Static
Control A/B Runtime Ramp Time
0x13
0x00
Static
Control A/B Runtime Ramp Configuration
0x14
0x00
Static
Reserved
0x15
0x33
Static
Brightness Configuration
0x16
0x00
Static
Control A Full Scale Current Setting
0x17
0x13
Static
Control B Full Scale Current Setting
0x18
0x13
Static
HVLED Current Sink Feedback Enables
0x19
0x07
Static
Boost Control
0x1A
0x00
Static
Auto-Frequency Threshold
0x1B
0xCF
Static
PWM Configuration
0x1C
0x0C
Dynamic(1)
Control A Brightness LSB
0x20
0x00
Dynamic
Control A Brightness MSB
0x21
0x00
Dynamic
Control B Brightness LSB
0x22
0x00
Dynamic
Control B Brightness MSB
0x23
0x00
Dynamic
Control Bank Enables
0x24
0x00
Dynamic
HVLED Open Faults
0xB0
0x00
Production Test Only
HVLED Short Faults
0xB2
0x00
Production Test Only
LED Fault Enables
0xB4
0x00
Production Test Only
(1)
The PWM input should always be in the inactive state when setting the Control bank PWM Enable bit. The PWM configuration bits
should only be changed when the PWM is disabled for both Control Banks.
Table 3. Revision (Address 0x00)
Bits [7:4]
Bits [3:0]
Not Used
Silicon Revision
Reserved
0000 = Rev. A Silicon
Table 4. Software Reset (Address 0x01)
Bits [7:1]
Bit [0]
Not Used
Silicon Revision
0 = Normal Operation
Reserved
1 = Software Reset (self-clearing)
Table 5. HVLED Current Sink Output Configuration (Address 0x10)
Bits [7:3]
Bit [2]
Bit [1]
Bit [0]
Not Used
HVLED3 Configuration
HVLED2 Configuration
HVLED1 Configuration
Reserved
0 = Control A
0 = Control A
0 = Control A (default)
1 = Control B (default)
1 = Control B (default)
1 = Control B
20
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Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: LM3697


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