IC-HT Datasheet, PDF (1/42 Pages) IC-Haus GmbH – DUAL CW LASER DIODE DRIVER

iC-HT
DUAL CW LASER DIODE DRIVER
preliminary
Rev A1, Page 1/42
FEATURES
o Dual channel CW operation with up to 750 mA per channel
o Up to 1500 mA with both channels combined
o 2.8 V to 8 V power supply
o Operation with or without µController
o Individual enable input per channel
o Control loop accuracy better than 1%
o Internal programmable logarithmic monitor resistor
o Operating point setup with 10 bit logarithmic resolution
o ACC or APC mode individually configurable for each channel
o A/D converters for analog monitoring
o Serial programming interface (SPI or I²C compliant)
o Configuration content verification and validation
o Laser channel disable with programmable overcurrent
threshold
o Optimized for N-type laser diodes
o Low drop linear regulator for 3.3 V
o Low current standby mode
o Temperature monitor
o Temperature range -40 . . . 85 °C
APPLICATIONS
o Laser diode modules
o CW laser diode drivers
o Embedded laser diode
controllers
o Safety related laser controllers
PACKAGES
QFN28 5 mm x 5 mm
BLOCK DIAGRAM
VB 2.8...8V
CVB
1μF
CVDD
1μF
GND
DUAL CW LASER DIODE DRIVER
VDD REGULATOR
VB
- ^REF
VDD
+
NCHK
EMC
NCS/A1
MOSI/A0
SCLK/SCL
MISO/SDA
INS/WKR
NSTBY
EC1
EC2
T.PAD
GND
VB UNDERVOLTAGE
VDD UNDERVOLTAGE
CFGTIMO
Check
PODO
OVC
MEMERR
WATCHDOG
OVT
IO DRIVERS
TEMPERATURE
MONITOR 8 Bit
RAM
INTEGRITY
CHECK
0x10 0x30
0x1F 0x3F
RAM
REGISTERS
0x11 ILIM1(7:0)
0x13
0x14
REF1(9:8)
REF1(7:0)
WATCHDOG
TIMER
OSCILLATOR
0x03
0x04
ADC1(9:8)
ADC1(7:0)
0x10 ADCC1(2:0)
SPI/I2C
SLAVE
0x12 RMD1(7:0)
LASER
CONTROL
0x05
0x06
ADC2(9:8)
ADC2(7:0)
0x16 ILIM2(7:0)
0x18
0x19
REF2(9:8)
REF2(7:0)
0x17 RMD2(7:0)
0x02 TEMP(7:0)
ACC
8 Bit
D
A
10 Bit
D
A
10 Bit
A
D
LDK1
VDD
VB
OVC1
+
-
EACC1
ADSNF1
EM C
R
8 Bit
DISP1
0
255
LASER CHANNEL 1
DCO
LDK1
ECIE1
CI
CI1
CIL1
AGND1
MDA1
APC
PLR1
MRL1
LDK2
CI2
CIL2
AGND2
MDA2
LASER CHANNEL 2
MRL2
N
..750mA
CI1
..10 nF..
RM1
N
..750mA
CI2
..10 nF..
RM2
Copyright © 2013 iC-Haus
http://www.ichaus.com