ISL97673IRZ Intersil, ISL97673IRZ Datasheet - Page 19

• Manufacturer Part Number: ISL97673IRZ
• Description: IC LED DVR PWM CTRL 6CH 20QFN
• Manufacturer: Intersil

Specifications of ISL97673IRZ

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Type - Secondary: RGB, White LED
• Frequency: 600kHz, 1.2MHz
• Voltage - Supply: 4.5 V ~ 26.5 V
• Voltage - Output: *
• Mounting Type: Surface Mount
• Package / Case: 20-VFQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 40mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADDRESS
ADDRESS
0x0A
0x00
0x01
0x02
0x03
0x07
0x08
0x09
0x00
0x01
0x02
0x03
0x07
0x08
0x09
0x0A
PWM
Brightness
Control
Register
Device Control
Register
Fault/Status
Register
Si Revision
Register
DC Brightness
Control
Register
Configuration
Register
Output
Channel
Register
Phase Shift
Deg
REGISTER
PWM Brightness Control
Register
Device Control Register
Fault/Status Register
Si Revision Register
DC Brightness Control
Register
Configuration Register
Output Channel Select and
Fault Readout Register
Phase Shift Degree
REGISTER
Reserved
Reserved
Reserved DirectPWM PWMtoDC
Reserved
BRTDC7
BIT 7
Phase
Equal
BRT7
19
1
Reserved
Reserved
Reserved
BRTDC6
BIT 6
Phase
Shift6
BRT6
1
TABLE 3B. DATA BIT DESCRIPTIONS
BRT[7..0] = 256 steps of DPWM duty cycle brightness control
PWM_MD = PWM mode select bit (1 = absolute brightness, 0 = % change),
default = 0
PWM_SEL = Brightness control select bit (1 = control by PWMI, 0 = control by
SMBus/I
BL_CTL = BL On/Off (1 = On, 0 = Off), default = 0
1_CH_SD = One LED output channel is shutdown (1 = shutdown, 0 = OK)
BL_STAT = BL status (1 = BL On, 0 = BL Off)
OV_CURR = Input overcurrent (1 = Overcurrent condition, 0 = Current OK)
THRM_SHDN = Thermal Shutdown (1 = Thermal fault, 0 = Thermal OK)
FAULT = Fault occurred (Logic “OR” of all of the fault conditions)
REV[2..0] = Silicon rev (Rev 0 through Rev 7 allowed for silicon spins)
BRTDC[7..0] = 256 steps of DC brightness control
DirectPWM = Forces the PWM input signal to directly control the current sources.
PWM-to-DC = Switches current sources on and varies DC level rather than PWMing.
BstSlewRate = Controls strength of FET driver. 00 - 25% drive strength, 01 - 50%
drive strength, 10 - 75% drive strength, 11 - 100% drive strength.
FSW = Switching frequencies selection, FSW = 0 = 1.2MHz. FSW = 1 = 600kHz
VSC[1..0] = Short circuit thresholds selection, 0 = disabled, 1 = 3.6V, 2 = 4.8V, 3
= 5.8V
CH[5..0] = Output Channel Read and Write. In Write, 1 = Channel Enabled, 0 =
Channel Disabled. In Read, 1 = Channel OK, 0 = Channel Shutdown or Disabled
EqualPhase = Controls phase shift mode - When 0, phase shift is defined by
PhaseShift<6:0>. When 1, phase shift is 360/N (where N is the number of channels
enabled).
PS[6..0] = 7-bit Phase shift setting - phase shift between each channel is
PhaseShift<6:0>/(255*PWMFreq). In direct PWM modes, phase shift between each
channel is PhaseShift<6:0>/12.8MHz. Note that user must not specify a value that
gives >360° shift between first and last channels.
2_CH_SD = Two LED output channels are shutdown (1 = shutdown, 0 = OK)
Reserved Reserved Reserved PWM_MD
2_CH_SD 1_CH_SD BL_STAT OV_CURR THRM_SHDN
BRTDC5
BIT 5
Phase
Shift5
TABLE 3A. REGISTER LISTING
BRT5
CH5
0
2
C), default = 0
BRTDC4
BstSlew
BIT 4
Rate1
Phase
Shift4
BRT4
CH4
ISL97673
0
BRTDC3
BstSlew
BIT 3
Rate0
Phase
Shift3
BRT3
CH3
1
DATA BIT DESCRIPTIONS
BRTDC2
BIT 2
Shift2
Phase
REV2
BRT2
FSW
CH2
PWM_SEL
BRTDC1
BIT 1
Phase
Shift1
BRT1
REV1
VSC1
CH1
BRTDC0
BL_CTL
BIT 0
FAULT
Phase
Shift0
BRT0
REV0
VSC0
CH0
DEFAULT
VALUE
0x00
0x00
0xC8
0x00
0xFF
0xFF
0x1F
0x3F
Read and Write
Read and Write
Read and Write
Read and Write
Read and Write
Read and Write
SMBus/I
PROTOCOL
Read Only
Read Only
June 24, 2010
FN7633.0
2
C