Document
CAT310 LED Driver, 10-Channel
Description
The CAT310 is a 10−channel LED driver for automotive and other lighting applications. All LED output channels are driven from a low on−resistance open−drain High Voltage CMOS Nch−FETs and are fully compliant with “Load Dump” transients of up to 40 volts. The LED bias current of each channel can be set independently using an external series ballast resistor, making the device ideal for multi−color instrumentation displays.
A high−speed serial interface (suitable with both 3.3 volt and 5 volt systems) feeding a 10 bit shift register is used to program the desired state (on/off) of each channel. The device offers a blanking control pin (BLANK) which can be used to disable all channels on demand. A serial output data pin (SOUT) is provided to daisy−chain devices in large cluster LED applications.
During initial power up all channels are reset and cleared via an under−voltage lock out (UVLO) detector and for added protection all channels are disabled in the event of a battery over−voltage condition (19 volts or more).
Features
• Automotive “Load Dump” Protection (40 V) • 10 Independent LED Channels • Up to 50 mA Output per Channel • Overvoltage Detection at 19 V • Serial Interface for Channel Programming • Daisy Chain Output for Multi−driver Cascading • LED Blanking Control • Operating Temperature from −40°C to +125°C • 20−pin SOIC Package • This Device is Pb−Free, Halogen Free/BFR Free and RoHS
Compliant
Applications
• Automotive Lighting • White and Other Color High Brightness LEDs • Multi−color High−brightness LED Cluster Displays • General LED Lighting
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SOIC−20 W SUFFIX CASE 751BJ
PIN CONNECTIONS
SCLK
1
XLAT
SIN
SOUT
GND
OUT4
OUT3
OUT2
OUT1
OUT0
NC BLANK VCC VBATT PGND OUT5 OUT6 OUT7 OUT8 OUT9
MARKING DIAGRAM
CAT310W
CAT310W = Specific Device Code
ORDERING INFORMATION
Device CAT310W
Package
SOIC−20 (Pb−Free)
Shipping 1,000/Tape & Reel
© Semiconductor Components Industries, LLC, 2009
1
November, 2009 − Rev. 2
Publication Order Number: CAT310/D
VBATTERY 14 V (typical)
VCC 5V 1 mF
CAT310
RS1 RS2
RS10 330 W
30 mA
VBATT OUT0 OUT1
VCC
BLANK XLAT
CAT310
SIN SCLK GND PGND
OUT9 SOUT
Figure 1. Typical Application Circuit
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
VCC voltage
7
V
Input voltage range (SIN, SCLK, BLANK, XLAT)
−0.3 V to VCC + 0.3 V
V
SOUT voltage range
−0.3 V to VCC + 0.3 V
V
Peak OUT0 to OUT9 voltage
40
V
VBATT input voltage
40
V
DC output current on OUT0 to OUT9
70
mA
Storage Temperature Range
−55 to +160
°C
Operating Junction Temperature Range
−40 to +150
°C
Lead Soldering Temperature (10 sec.)
300
°C
ESD Rating: Low Voltage Pins Human Body Model Machine Model
V 3000 300
ESD Rating: VBATT, OUT[0:9] pins Human Body Model Machine Model
V 1000 100
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Table 2. RECOMMENDED OPERATING CONDITIONS
Parameter
Range
Unit
VCC
3.0 to 5.5
V
Voltage applied to OUT0 to OUT9
9 to 17
V
Output current on OUT0 to OUT9
0 to 50
mA
Ambient Temperature Range
−40 to +125
_C
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CAT310
Electrical Operating Characteristics
Table 3. DC CHARACTERISTICS (VCC = 5.0 V, −40°C ≤ TA ≤ 125°C, over recommended operating conditions unless specified otherwise.)
Symbol
Name
Conditions
Min
Typ
ISTBY
Standby Quiescent Current
Static input signal.
1
All outputs turned off.
VOVP
VBATT Over Voltage Protection Trigger threshold
17
19
VUVLO
VCC Under Voltage Lockout
1.7
Trigger threshold
RSW IO(n)LKG
IXLAT
Switch on resistance for OUT0 to OUT9 OUT0 to OUT9 Output Switch Leakage XLAT Internal Pull−down current
IO(n) = 30 mA
V(OUT(n)) = 15 V
XLAT = VCC XLAT = 0.3 V
2
5
0.1
4
10
1
3
IBLANK
BLANK Internal Pull−up current
VIH
Logic high input voltage
VIL
Logic low input voltage
IIL
Logic Input leakage current
(SCLK, SIN)
BLANK = 0 V BLANK = VCC − 0.3 V
VI = VCC or GND
4
10
1
3
0.3 VCC
−5
0
VOH
SOUT logic high output voltage
VOL
SOUT logic low output voltage
IOH = −1 mA IOL = 1 mA
VCC −0.3 V
Max 10
21
2.5
12 10 30 6 30 6 0.7 VCC
5
0.3
Units mA V V
W mA mA mA
V
mA
V
Table 4. SWITCHING CHARACTERISTICS (VCC = 5.0 V, −40°C ≤ TA ≤ 125°C, over recommended operating conditions unless specified otherwise.)
Symbol
Name
Conditions
Min
Typ
Max
Units
SCLK
fSCLK twh/wl SIN
SCLK Clock Frequency SCLK Pulse width
High or Low
10
MHz
30
ns
tsu th XLAT
Setup time SIN to SCLK Hold time SIN to SCLK
10
ns
10
ns
tw
XLAT Pulse width
SIN to SCLK
20
ns
th
Hold time
SCLK to XLAT
20
ns
tr
SOUT rise time (10% to 90%)
tf
SOUT fa.