CATALYST CAT4016 Service Manual
16-Channel Constant Current LED Driver
t
CAT4016
FEATURES
16 Constant current-sink channels
Serial interface up to 25MHz clock frequency
3V to 5.5V logic supply
LED current range from 2mA to 100mA
LED current set by external RSET resistor
300mV LED dropout at 30mA
Thermal shutdown protection
Available in RoHS-compliant 24-lead SOIC,
TSSOP, QSOP, and 4 x 4mm TQFN packages
APPLICATION
Billboard Display
Marquee Display
Instrument Display
General Purpose Display
For Ordering Information details, see page 14.
DESCRIPTION
The CAT4016 is a 16 channel constant current driver
for LED billboard and other general display
applications. LED channel currents are programmed
together via an external RSET resistor. Low output
voltage operation on the LED channels as low as 0.4V
(for 2 to 100mA LED current) allows for more power
efficient designs.
A high-speed 4-wire serial interface of up to 25MHz
clock frequency controls each individual channel using
a shift register and latch configuration. A serial output
data pin (SOUT) allows multiple devices to be
cascaded and programmed via one serial interface.
The device also includes a blanking control pin
(BLANK) that can be used to disable all channels
independently of the interface.
Thermal shutdown protection is incorporated in the
device to disable the LED outputs if the die
temperature exceeds a set limit.
The device is available in the 24-lead SOIC, TSSOP,
QSOP and the compact TQFN 4 x 4mm packages.
TYPICAL APPLICATION CIRCUIT
VIN
3V to
5.5V
CONTROLLER
© Catalyst Semiconductor, Inc. 1 Doc. No. MD-5028 Rev. C
Characteristics subject to change without notice
1µF
BLANK
LATCH
SIN
CLK
LED1VDD
LED2
CAT4016
GND
LED16
SOUT
RSET
20mA
to nex
device
3k
CAT4016
ORDERING INFORMATION
Part Number Package Quantity per Reel Package Marking
CAT4016W-T1 SOIC24
CAT4016Y-T2 TSSOP24
CAT4016VS-T2 QSOP24
CAT4016VSR-T2 QSOP24
CAT4016HV6-T2 TQFN24
CAT4016HV6-GT2 TQFN24
Notes:
(1) Matte-Tin Plated Finish (RoHS-compliant)
(2) NiPdAu Plated Finish (RoHS-compliant)
(1)
1,000 CAT4016W
(1)
2,000 CAT4016Y
(1)
2,000 4016VS
(1)
2,000 4016VSR
(1)
2,000 LAAA
(2)
2,000 LAAD
PIN CONFIGURATION
24-Lead SOIC (W),
TSSOP (Y), QSOP (VS)
24-Lead QSOP (VSR)
GND
SIN
CLK
LATCH
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
124
223
322
421
520
619
718
817
916
10 15
11 14
12 13
VDD
RSET
SOUT
BLANK
LED16
LED15
LED14
LED13
LED12
LED11
LED10
LED9
LED15
LED16
BLANK
SOUT
RSET
VDD
GND
SIN
CLK
LATCH
LED1
LED2
124
223
322
421
520
619
718
817
916
10 15
11 14
12 13
LED14
LED13
LED12
LED11
LED10
LED9
LED8
LED7
LED6
LED5
LED4
LED3
GND
24-Lead TQFN (HV6)
RSET
VDD
1
BLANK
LED16
SOUT
21222324
LED15
1920
LED14
18
2
SIN
CLK
LATCH
LED1
LED2
3
4
5
6
10987
LED3
LED4
LED5
LED7
LED6
1211
LED8
LED13
17
16
LED12
15
LED11
1413LED10
LED9
Doc. No. MD-5028 Rev. C 2 © Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT4016
ABSOLUTE MAXIMUM RATINGS
Parameter Rating Units
VDD Supply Voltage 6 V
Logic input/output voltage (SIN, SOUT, CLK, BLANK, LATCH) -0.3V to VDD+0.3V V
LEDn voltage 6 V
DC output current on LED1 to LED16 150 mA
Storage Temperature Range -55 to +160
Junction Temperature Range -40 to +150
Lead Soldering Temperature (10sec.) 300
°C
°C
°C
RECOMMENDED OPERATING CONDITIONS
Parameter Range Units
VDD 3.0 to 5.5 V
Voltage applied to LED1 to LED16 0.4 to 5.5 V
LED current RSET control range up to 100 mA
Ambient Temperature Range -40 to +85
°C
ELECTRICAL OPERATING CHARACTERISTICS
DC Characteristics
V
= 5.0V, T
DD
= 25 ºC, over recommended operating conditions unless specified otherwise.
AMB
Symbol Name Conditions Min Typ Max Units
V
= 1V, R
LED
I
LED Current (any channel)
LED-ACC
I
LED-MAT
ΔI
VDD
ΔI
VLED
I
DDOFF
I
DDON
I
LKG
R
LATCH
R
BLANK
V
VIL
V
HYS
IIL
V
OH
VOL
V
RSET
LED Current Matching
- I
(I
LED
LEDAVR
) / I
LEDAVR
LED current regulation vs. V
LED current regulation vs. V
DD
LED
Supply Current (all outputs off)
Supply Current (all outputs on)
LEDn output Leakage V
LATCH Pull-down Resistance 100 180 300 k
BLANK Pull-up Resistance 100 180 300 k
Logic high input voltage
IH
Logic low input voltage
Logic input hysteresis voltage
Logic Input leakage current
(CLK, SIN)
SOUT logic high output voltage
SOUT logic low output voltage
RSET Regulated Voltage 1.17 1.20 1.23 V
V
= 1V, R
LED
= 1V, R
V
LED
V
= 1V, R
LED
V
= 1V, R
LED
V
= 1V, R
LED
within 4.5V and 5.5V
V
DD
LED current 30mA
within 1V and 3V
V
LED
LED current 30mA
R
= 3k 3 8 mA
SET
R
= 750 8.5 mA
SET
R
= 3k 4 9 mA
SET
R
= 750 10 mA
SET
= 5V, outputs off -1 1 µA
LED
VI = VDD or GND -5 0 5 µA
= -1mA
I
OH
I
= 1mA
OL
TSD Thermal Shutdown 160 ºC
T
Thermal Hysteresis 20 ºC
HYST
= 3k 18 20 22
SET
= 1.5k 36 40 44
SET
= 750 80
SET
= 3k ±1.5
SET
= 1.5k -6.0 ±1.5 +6.0
SET
= 750 ±2.0
SET
±0.1 % / V
±0.05 % / V
0.7xV
V
CC
DD
-0.3V
0.1xVDD V
0.3xVDD V V
0.3
mA
%
V
© Catalyst Semiconductor, Inc. 3 Doc. No. MD-5028 Rev. C
Characteristics subject to change without notice
CAT4016
V
Timing Characteristics
For 3.0V ≤ V
≤ 5.5V, T
DD
= 25 ºC, unless specified otherwise.
AMB
Symbol Name Conditions Min
(1)
Typ
(2)
Max
CLK
f
CLK Clock Frequency 25 MHz
clk
t
CLK Pulse Width High 20 ns
cwh
t
CLK Pulse Width Low 20 ns
cwl
SIN
t
Setup time SIN to CLK 4 ns
ssu
tsh Hold time SIN to CLK 4 ns
LATCH
t
LATCH Pulse width 20 ns
lwh
Tlh Hold time LATCH to CLK 4 ns
T
Setup time LATCH to CLK Channel Stagger Delay 800 ns
lsu
LEDn
tld LED1 Propagation delay LATCH to LED1 off/on 40 300 ns
tls LED Propagation delay stagger LED(n) to LED(n+1) 17 40 ns
t
lst
LED Propagation delay stagger
total
LED1 to LED16 250 ns
tbd BLANK Propagation delay BLANK to LED(n) off/on 60 300 ns
tlr LED rise time (10% to 90%) Pull-up resistor = 5 0 to 3 . 0V 40 200 ns
tlf LED fall time (90% to 10%) Pull- up resistor = 50 t o 3 . 0 V 30 250 ns
SOUT
tor SOUT rise time (10% to 90%) CL = 15pF 5 ns
tof SOUT fall time (90% to 10%) CL = 15pF 5 ns
tod Propagation delay time SOUT CLK to SOUT 8 15 25 ns
(1)
Units
Test Circuit for AC Characteristics
DD
CONTROLLER
Notes:
(1) All min and max values are guaranteed by design.
(2) V
Doc. No. MD-5028 Rev. C 4 © Catalyst Semiconductor, Inc.
= 5V, LED current 30mA.
DD
1µF
BLANK
LATCH
SIN
CLK
RSET
VDD
RSET
CAT4016
GND
LED1
LED16
SOUT
Rp 50
Rp 50
Cl
15pF
V1
3V
Characteristics subject to change without notice
CAT4016
1/f
clk
CLK
t
ssu
t
sh
t
cwl
t
cwh
SIN
t
od
SOUT
t
lh
t
lsu
LATCH
t
lwh
Figure 1. Serial Input Timing Diagram
LATCH
BLANK
t
ld
t
bd
LED1
LED2
LED16
t
ls
t
= 15 t
lst
ls
Figure 2. LED Output Timing Diagram
© Catalyst Semiconductor, Inc. 5 Doc. No. MD-5028 Rev. C
Characteristics subject to change without notice
Loading...