LDS8160-002-T2 IXYS, LDS8160-002-T2 Datasheet - Page 13

• Manufacturer Part Number: LDS8160-002-T2
• Description: IC LED DVR WHT/RGB BCKLGT 16WQFN
• Manufacturer: IXYS
• Series: LED-Sense™, Power-Lite™r
• Type: Backlight, White LED, RGB (I²C Interface)r

Specifications of LDS8160-002-T2

• Topology: Linear (LDO), PWM
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: RGB, White LED
• Frequency: 1.2MHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-WQFN, 16-miniQFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 25mA
• Internal Switch(s): Yes
• Efficiency: 80%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Details
• Other names: LDS8160-002-T2-2

LDS8160
BLOCK DIAGRAM
BASIC OPERATION
The LDS8160 may operate in follow modes:
NORMAL OPERATION MODE
At power-up, V
5.5 V (max). If V
logic LOW at least until V
© 2009 IXYS Corp.
Characteristics subject to change without notice
a) Normal Operation Mode
b) Custom Operation Modes
c) Normal Standby Mode
d) Low Power (LP) Standby Mode
e) Programming Modes
f)
Shutdown Mode
SADD
SDAT
GND
SCLK
IN
32
OTP
Trim
OTP
Driver
should be in the range from 2.3 V to
IN
Gnd
is slow rising, EN pin should be
Top Level Control
Soft Start control
LED Calibration
I2C Interface
Shorted LED
Digital Temperature
Sensor / Abritrator
diagnostics
Open LED
Vin to 1.8V LDO
for digital core
Green LUT
Blue LUT
Red LUT
Temp to PWM
Compensation
adjust LUTs
IN
Tables
1.8V
Temp
reaches 2.3 V level.
Figure 2: LDS8160 Functional Block Diagram
Vin
1 0 uA
To top control
10
1.2V
1.2V
Si Iforce
Reference
10 bit SAR
Bandgap
Voltage
8 bit to 12 bit (log) PWM
8 bit to 12 bit (log) PWM
8 bit to 12 bit (log) PWM
1.2V
ADC
Start Up
Si PNP
temp diode
POR
VIN
2 uA
PWMA (blue)
PWMB (green)
PWMC (red)
Pre-Scale
8x, 1x, or 1/4x
Generator
Generator
Generator
EN
1 mA
to top control & dig processing
OverTemp
13
LED Iforce
Reference
Calibrated
ADC bias
currents
Currents
Oscillator & Clock Generator
0.2 mA
and
to PWMA
to PWMB
to PWMC
When EN is taken HIGH, a soft-start power-up
sequence begins and performs internal circuits reset
that requires less than 100 µs.
An initialization sequence then begins taking less
than 10 ms. This sequence determines the user-
selected
programmed settings, and conducts initial diagnostics
for open/shorted LEDs.
At this point, the I
communication and the LDS8160 may be user-
programmed. Upon programming completion for all
required initial parameters and features’ settings, a
calibration command is given by setting bit 4 of the
~ 1.2 MHz
Vin to
al l
Drivers
I
2
C
slave
All Drivers 0 to 25 mA
PWMC
PWMA
PWMA
PWMB
PWMB
PWMC
2
Vin
C interface is ready for
address,
Doc. No. 8160_DS, Rev. N1.0
loads
DA1
DA2
DB1
DB2
DC1
DC2
factory