ISL97671AIRZ-T Intersil, ISL97671AIRZ-T Datasheet - Page 17

• Manufacturer Part Number: ISL97671AIRZ-T
• Description: IC LED DRVR 6-CH BACKLIGHT 20QFN
• Manufacturer: Intersil
• Series: -r

Specifications of ISL97671AIRZ-T

• Constant Current: -
• Constant Voltage: -
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Type - Secondary: RGB
• Frequency: 475kHz ~ 640kHz, 970kHz ~ 1.31MHz
• Voltage - Supply: 4.5 V ~ 26.5 V
• Voltage - Output: 45V
• Mounting Type: Surface Mount
• Package / Case: 20-VFQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: ISL97671AIRZ-TTR

CASE
10
11
9
V
V
V
V
IH
IH
IL
IL
Channel-to-Channel
ΔVF too high
Output LED stack
voltage too high
V
GND at start-up or
V
operation
OUT
OUT
NOTES:
SMBus/I
FAILURE MODE
SMBDAT
SMBCLK
/LX shorted to
P
1
S
shorted in
S = start condition
P = stop condition
A = acknowledge
A = not acknowledge
R/W = read enable at high; write enable at low
Master to Slave
Slave to Master
t
BUF
2
C Description
Slave Address
S
7
t
Upper OTP triggered but
CHx < 7.5V
V
LX current and timing are
monitored.
OVP pins monitored for
excursions below 20% of
OVP threshold.
HD:STA
17
OUT
t
LOW
DETECTION MODE
> VOVP
W
t
1
R
TABLE 2. PROTECTIONS TABLE
t
FIGURE 26. SMBUS/I
FIGURE 27. WRITE BYTE PROTOCOL
HD:DAT
1
A
All channels go off until chip cooled and then comes back on with current
reduced to 76%. Subsequent OTP triggers will reduce I
Any channel that is below the target current will time-out after 6 PWM
cycles, and V
other channels.
The chip is permanently shutdown 31mS after power-up if V
shorted to GND.
ISL97671A
FAILED CHANNEL ACTION
Command Code
t
HIGH
t
F
OUT
8
will return to the normal regulation voltage required for
2
t
SU:DAT
C INTERFACE
(Continued)
1
A
S
t
SU:STA
GOOD CHANNELS ACTION
Data byte
8
OUT
further
OUT
/Lx is
1
A
t
SU:STO
Highest VF of
CH0 through CH5
Highest VF of
CH0 through CH5
V
1
P
OUT
March 24, 2011
REGULATED
P
BY
FN7709.1