Catalyst CAT4016 16-channel constant current led driver Datasheet

CAT4016
16-Channel Constant Current LED Driver
FEATURES
DESCRIPTION
„ 16 Constant current-sink channels
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.
„ 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
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.
„ 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
Thermal shutdown protection is incorporated in the
device to disable the LED outputs if the die
temperature exceeds a set limit.
For Ordering Information details, see page 14.
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
VDD
CONTROLLER
20mA
1µF
LED1 LED2
LED16
BLANK
LATCH
CAT4016
SOUT
to next
device
SIN
RSET
CLK
GND
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3kΩ
1
Doc. No. MD-5028 Rev. C
CAT4016
ORDERING INFORMATION
Part Number
Package
Quantity per Reel
Package Marking
1,000
CAT4016W
(1)
CAT4016W-T1
SOIC24
(1)
CAT4016Y-T2
TSSOP24
CAT4016VS-T2
2,000
CAT4016Y
(1)
2,000
4016VS
(1)
2,000
4016VSR
(1)
2,000
LAAA
(2)
2,000
LAAD
QSOP24
CAT4016VSR-T2
QSOP24
CAT4016HV6-T2
TQFN24
CAT4016HV6-GT2
TQFN24
Notes:
(1) Matte-Tin Plated Finish (RoHS-compliant)
(2) NiPdAu Plated Finish (RoHS-compliant)
PIN CONFIGURATION
24-Lead SOIC (W),
TSSOP (Y), QSOP (VS)
24-Lead QSOP (VSR)
GND
1
24
VDD
LED15
1
24
LED14
SIN
2
23
RSET
LED16
2
23
LED13
CLK
3
22
SOUT
BLANK
3
22
LED12
LATCH
4
21
BLANK
SOUT
4
21
LED11
LED1
5
20
LED16
RSET
5
20
LED10
LED2
6
19
LED15
VDD
6
19
LED9
LED3
7
18
LED14
GND
7
18
LED8
LED4
8
17
LED13
SIN
8
17
LED7
LED5
9
16
LED12
CLK
9
16
LED6
LED6
10
15
LED11
LATCH
10
15
LED5
LED7
11
14
LED10
LED1
11
14
LED4
LED8
12
13
LED9
LED2
12
13
LED3
24-Lead TQFN (HV6)
VDD
RSET
SOUT
BLANK
LED16
LED15
23
22
21
20
19
GND
1
18 LED14
SIN
2
17 LED13
CLK
3
16 LED12
LATCH
4
15 LED11
LED1
5
14 LED10
LED2
6
13 LED9
9
10
LED4
LED5
LED6
11
12
LED8
8
LED7
7
LED3
Doc. No. MD-5028 Rev. C
24
2
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT4016
ABSOLUTE MAXIMUM RATINGS
Parameter
VDD Supply Voltage
Logic input/output voltage (SIN, SOUT, CLK, BLANK, LATCH)
Rating
Units
6
-0.3V to VDD+0.3V
V
V
6
150
-55 to +160
-40 to +150
300
V
mA
°C
°C
°C
Range
Units
3.0 to 5.5
0.4 to 5.5
up to 100
-40 to +85
V
V
mA
°C
LEDn voltage
DC output current on LED1 to LED16
Storage Temperature Range
Junction Temperature Range
Lead Soldering Temperature (10sec.)
RECOMMENDED OPERATING CONDITIONS
Parameter
VDD
Voltage applied to LED1 to LED16
LED current RSET control range
Ambient Temperature Range
ELECTRICAL OPERATING CHARACTERISTICS
DC Characteristics
VDD = 5.0V, TAMB = 25 ºC, over recommended operating conditions unless specified otherwise.
Symbol
Name
ILED-ACC
LED Current (any channel)
ILED-MAT
LED Current Matching
(ILED - ILEDAVR) / ILEDAVR
ΔIVDD
LED current regulation vs. VDD
ΔIVLED
LED current regulation vs. VLED
IDDOFF
Supply Current (all outputs off)
IDDON
Supply Current (all outputs on)
ILKG
RLATCH
RBLANK
LEDn output Leakage
LATCH Pull-down Resistance
BLANK Pull-up Resistance
VIH
VIL
VHYS
IIL
VOH
VOL
VRSET
TSD
THYST
Conditions
VLED = 1V, RSET = 3kΩ
VLED = 1V, RSET = 1.5kΩ
VLED = 1V, RSET = 750Ω
VLED = 1V, RSET = 3kΩ
VLED = 1V, RSET = 1.5kΩ
VLED = 1V, RSET = 750Ω
VDD within 4.5V and 5.5V
LED current 30mA
VLED within 1V and 3V
LED current 30mA
RSET = 3kΩ
RSET = 750Ω
Min
Typ
Max
Units
18
36
20
40
80
±1.5
±1.5
±2.0
22
44
mA
+6.0
%
-6.0
RSET = 3kΩ
RSET = 750Ω
VLED = 5V, outputs off
Logic high input voltage
Logic low input voltage
%/V
±0.05
%/V
3
8.5
8
mA
mA
4
9
mA
10
-1
100
100
180
180
mA
1
300
300
µA
kΩ
kΩ
0.3xVDD
V
V
0.7xVDD
Logic input hysteresis voltage
0.1xVDD
Logic Input leakage current
(CLK, SIN)
VI = VDD or GND
SOUT logic high output voltage
SOUT logic low output voltage
IOH = -1mA
IOL = 1mA
RSET Regulated Voltage
Thermal Shutdown
Thermal Hysteresis
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
±0.1
-5
5
VCC-0.3V
0.3
1.17
3
0
V
1.20
160
20
1.23
µA
V
V
ºC
ºC
Doc. No. MD-5028 Rev. C
CAT4016
Timing Characteristics
For 3.0V ≤ VDD ≤ 5.5V, TAMB = 25 ºC, unless specified otherwise.
Symbol
Name
Min(1)
Conditions
Typ(2)
Max(1)
Units
25
MHz
CLK
fclk
CLK Clock Frequency
tcwh
CLK Pulse Width High
20
ns
tcwl
CLK Pulse Width Low
20
ns
tssu
Setup time SIN to CLK
4
ns
tsh
Hold time SIN to CLK
4
ns
tlwh
LATCH Pulse width
20
ns
Tlh
Hold time LATCH to CLK
4
ns
Tlsu
Setup time LATCH to CLK
Channel Stagger Delay
800
ns
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
tlst
LED Propagation delay stagger
total
LED1 to LED16
250
tbd
BLANK Propagation delay
BLANK to LED(n) off/on
60
300
ns
tlr
LED rise time (10% to 90%)
Pull-up resistor = 50Ω to 3.0V
40
200
ns
tlf
LED fall time (90% to 10%)
Pull-up resistor = 50Ω to 3.0V
30
250
ns
SIN
LATCH
LEDn
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
Test Circuit for AC Characteristics
1µF
VDD
VDD
CONTROLLER
LED1
Rp
50Ω
Rp
50Ω
BLANK
LATCH
CAT4016
LED16
SIN
V1
SOUT
CLK
RSET
GND
Cl
3V
15pF
RSET
Notes:
(1) All min and max values are guaranteed by design.
(2) VDD = 5V, LED current 30mA.
Doc. No. MD-5028 Rev. C
4
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT4016
1/fclk
CLK
tssu
tsh
tcwl
tcwh
SIN
tod
SOUT
tlh
tlsu
LATCH
tlwh
Figure 1. Serial Input Timing Diagram
tld
LATCH
tbd
BLANK
tls
LED1
LED2
tlst = 15 tls
LED16
Figure 2. LED Output Timing Diagram
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. MD-5028 Rev. C
CAT4016
TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 5.0V, LED current 30mA, all LEDs On, TAMB = 25°C unless otherwise specified.
Supply Current vs. VDD Pin Voltage
LED Current vs. LED Pin Voltage
6.0
SUPPLY CURRENT [mA]
LED CURRENT [mA]
70
60
50
40
30
20
10
0
0.3
0.6
0.9
LED PIN [V]
1.2
4.5
4.0
3.5
All LED's OFF
1.5
3.0
3.5
4.0
4.5
VDD [V]
5.0
5.5
Supply Current vs. RSET Current
LED Current vs. VDD Pin Voltage
12
SUPPLY CURRENT [mA]
31.5
31.0
LED CURRENT [mA]
5.0
3.0
0.0
30.5
30.0
29.5
29.0
28.5
All LED's ON
10
8
6
4
All LED's OFF
2
0
3.0
3.5
4.0
4.5
VDD [V]
5.0
5.5
0.0
RSET Voltage vs. VDD Pin Voltage
0.5
1.0
1.5
RSET CURRENT [mA]
2.0
LED Current vs. RSET Resistor
1.30
100
LED CURRENT [mA]
RSET PIN [V]
All LED's ON
5.5
1.25
1.20
1.15
1.10
80
60
40
20
0
3.0
Doc. No. MD-5028 Rev. C
3.5
4.0
4.5
VDD [V]
5.0
5.5
0.1
6
1.0
10.0
RSET [kΩ]
100.0
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT4016
TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 5.0V, LED current 30mA, all LEDs On, TAMB = 25°C unless otherwise specified.
LED Current vs. Temperature
RSET Voltage vs. Temperature
1.30
31.5
LED CURRENT [mA]
31.0
RSET PIN [V]
1.25
1.20
1.15
30.5
30.0
29.5
29.0
1.10
28.5
-50
0
50
100
TEMPERATURE [°C]
150
-50
150
Internal Pull-Up Current (BLANK pin)
Internal Pull-Down Current (LATCH pin)
30
PULL-UP CURRENT [μA] .
30
PULL-DOWN CURRENT [μA] .
0
50
100
TEMPERATURE [°C]
25
20
15
10
5
25
20
15
10
5
0
0
0
1
2
3
4
LATCH VOLTAGE [V]
0
5
1
2
3
4
BLANK VOLTAGE [V]
5
BLANK Transient Response
PWM Dimming on BLANK pin (f = 10kHz)
100
DUTY CYCLE [%]
80
60
40
20
0
0
5
10
15
20
25
LED CURRENT [mA]
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
30
7
Doc. No. MD-5028 Rev. C
CAT4016
PIN DESCRIPTION
Name
Function
GND
Ground
SIN
Serial data input pin
CLK
Serial clock input pin
LATCH
Latch serial data to output registers
LED1-LED16
LED channel 1 to 16 cathode terminals
BLANK
Enable / disable all channels
SOUT
Serial data output pin.
RSET
LED current set pin
VDD
Positive supply Voltage
TAB (TQFN
package only)
Connect to GND on the PCB
PIN FUNCTION
BLANK is the LED channel enable and disable input
pin. When low, LEDs are enabled according to the
output latch register content. When high, all LEDs are
off, while preserving the data in the output latch
register.
GND is the ground reference pin for the device. This
pin must be connected to the ground plane on the
PCB.
SIN is the serial data input. Data is loaded into the
internal register on each rising edge of CLK.
SOUT is the serial data output of the 16-bit serial shift
register. This pin is used to cascade several devices
on the serial bus. The SOUT pin is then connected to
the SIN input of the next device on the serial bus to
cascade.
CLK is the serial clock input. On each rising CLK
edge, data is transferred from SIN to the internal 16bit serial shift register.
LATCH is the latch data input. On the rising edge of
LATCH, data is loaded from the 16-bit serial shift
register into the output register latch. On the falling
edge, this data is latched in the output register and
isolated from the state of the serial shift register.
RSET is the LED current setting pin. A resistor is
connected between this pin and ground. Each LED
channel current is set to 50 times the current pulled
out of the pin. The RSET pin voltage is regulated to
1.2V.
LED1 - LED16 are the LED current sink channels.
These pins are connected to the LED cathodes. The
current sinks drive the LEDs with a current equal to 50
times RSET pin current. For the LED sink to operate
correctly, the voltage on the LED pin must be above
0.4V.
Doc. No. MD-5028 Rev. C
VDD is the positive supply pin voltage for the entire
device. A small 1µF ceramic is recommended close
to pin.
8
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT4016
BLOCK DIAGRAM
LED1 LED2 LED3
LED16
VDD
+
VIN
+
CURRENT
SINKS
Current
Setting
BLANK
RSET
1.2V Ref
GND
LATCHES
LATCH
L1
L2
L3
L16
SHIFT
REGISTER
SIN
S1
S2
S3
S16
SOUT
CLK
Figure 2. CAT4016 Functional Block Diagram
BASIC OPERATION
The CAT4016 uses 16 tightly matched current sinks to
accurately regulate the LED current in each channel.
The external resistor, RSET, is used to set the LED
channel current to 50 times the current in RSET.
Pull-up and pull-down resistors are internally provided
to set the state of the BLANK and LATCH pins to the
off-state when not externally driven.
1.2
LED current = 50 ×
R SET
A high-speed serial 4-wire interface is provided to
program the state of each LED on or off. The
interface contains a 16-bit serial to parallel shift
register (S1-S16) and a 16-bit latch (L1-L16).
Programming the serial to parallel register is
accomplished via SIN and CLK input pins. On each
rising edge of the CLK signal, the data from SIN is
moved through the shift register serially. Data is also
moved out of SOUT which can be connected to a next
device if programming more then one device on the
same interface.
SERIAL INTERFACE
Tight current regulation for all channels is possible
over a wide range of input and LED voltages due to
independent current sensing circuitry on each
channel. The LED channels have a maximum dropout
of 0.4V for most current and supply voltage
conditions. This helps improve the heat dissipation
and efficiency of the LED driver.
Upon power-up, an under-voltage lockout circuit
clears all latches and shift registers and sets all
outputs to off. Once the under-voltage lockout
threshold has been reached the device can be
programmed.
On the rising edge of LATCH, the data contents of the
serial to parallel shift register is reflected in the
latches. On the falling edge of LATCH, the state of the
serial to parallel register at that particular time is
saved in the latches and does not change irrespective
of the contents of the serial to parallel register.
The driver delays the activation of each consecutive
LED output channel by 17ns (typical). Relative to
LED1, LED2 is delayed by 17ns, LED3 by 34ns and
LED16 by 250ns typical. The delay is introduced when
LATCH is activated. The delay minimizes the inrush
current on the LED supply by staggering the turn on
and off current spikes over a period of time and
therefore allowing usage of smaller bypass capacitors.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
BLANK is used to disable all LEDs (turn off)
simultaneously while maintaining the same data in the
latch register. When low, the LED outputs reflect the
data in the latches. When high, all outputs are high
impedance (zero current).
9
Doc. No. MD-5028 Rev. C
CAT4016
PACKAGE OUTLINE DRAWINGS
SOIC 24-Lead 300mils (W)(1)
SYMBOL
E1
E
MIN
e
PIN#1 IDENTIFICATION
MAX
A
2.35
2.65
A1
0.10
0.30
A2
2.05
2.55
b
0.31
0.51
c
0.20
0.33
D
15.20
15.40
E
10.11
10.51
E1
7.34
e
b
NOM
7.60
1.27 BSC
h
0.25
0.75
L
0.40
1.27
θ
0°
8°
θ1
5°
15°
TOP VIEW
h
D
A2
A
A1
SIDE VIEW
h
θ1
θ
θ1
L
c
END VIEW
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MS-013.
Doc. No. MD-5028 Rev. C
10
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT4016
TSSOP 24-Lead 4.4mm (Y)(1)
b
SYMBOL
MIN
NOM
MAX
A
A1
E1
E
1.20
0.05
0.15
A2
0.80
1.05
b
0.19
0.30
c
0.09
0.20
D
7.70
7.80
7.90
E
6.25
6.40
6.55
E1
4.30
4.40
4.50
e
0.65 BSC
L
1.00 REF
L1
0.50
θ1
0°
0.60
0.70
8°
e
TOP VIEW
D
c
A2
A
θ1
L1
A1
L
SIDE VIEW
END VIEW
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-153.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
11
Doc. No. MD-5028 Rev. C
CAT4016
QSOP 24-Lead (VS, VSR)(1)
D
E1 E
SYMBOL
MIN
A
1.37
A1
0.10
0.25
b
0.20
0.31
c
0.19
0.25
D
8.56
8.74
E
5.82
6.19
E1
3.81
e
MAX
1.73
3.98
0.635 BSC
h
0.28
L
0.41
L2
ө1
0.48
0.86
0.254 BSC
0º
ө2
e
NOM
8º
7º BSC
b
TOP VIEW
θ2
h
A
A1
θ1
c
L
L2
END VIEW
SIDE VIEW
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-137.
Doc. No. MD-5028 Rev. C
12
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT4016
TQFN 24-Pad 4 x 4mm (HV6)(1
A
D
DETAIL A
E
E2
PIN#1 ID
PIN#1 INDEX AREA
D2
A1
TOP VIEW
SIDE VIEW
BOTTOM VIEW
b
SYMBOL
MIN
NOM
MAX
A
0.70
0.75
0.80
A1
0.00
0.02
0.05
A3
b
DETAIL A
0.18
0.25
D
3.90
4.00
4.10
D2
2.40
–
2.90
E
3.90
4.00
4.10
E2
2.40
–
2.90
L
L
0.20 REF
e
e
0.30
A
0.50 BSC
0.30
0.40
0.50
FRONT VIEW
A3
)
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-220.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
13
Doc. No. MD-5028 Rev. C
CAT4016
EXAMPLE OF ORDERING INFORMATION (1)
Prefix
CAT
Device #
Suffix
4016
HV6
Product Number
4016
Optional
Company ID
Package
W: SOIC
Y: TSSOP
VS: QSOP
VSR: QSOP(4)
HV6: TQFN
–G
T2
Tape & Reel
T: Tape & Reel
1: 1,000/Reel (5)
2: 2,000/Reel
Lead Finish
Blank: Matte-Tin
G: NiPdAu
For Product Top Mark Codes, click here:
http://www.catsemi.com/techsupport/producttopmark.asp
Notes:
(1) All packages are RoHS-compliant (Lead-free, Halogen-free).
(2) The device used in the above example is a CAT4016HV6–GT2 (TQFN, NiPdAu, Tape & Reel, 2,000/Reel).
(3) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office.
(4) Different pin outs, see page 2.
(5) SOIC package availability in 1,000/Reel. All other packages are 2,000/Reel.
Doc. No. MD-5028 Rev. C
14
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
REVISION HISTORY
Date
Rev.
Reason
09/26/2008
A
Initial Issue
10/17/2008
B
04/09/2008
C
Update Absolute Maximum Ratings
Update Ordering Information table, added TQFN in NiPdAu plated finish.
Update Package Outline Drawings
Update Example of Ordering Information
Add Top Mark Codes link
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Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled
"Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale.
Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical
semiconductor applications and may not be complete.
Catalyst Semiconductor, Inc.
Corporate Headquarters
2975 Stender Way
Santa Clara, CA 95054
Phone: 408.542.1000
Fax:
408.542.1200
www.catsemi.com
Document No: MD-5028
Revision:
C
Issue date:
04/09/08
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