Technical Data Sheet

Data Sheet
Rev. 1.0 / November 2010
ZLED7012
Low-Voltage Four-Channel LED Driver
ZLED7012
Low-Voltage Four-Channel LED Driver
Brief Description
The ZLED7012, one of our ZLED family of LED control
ICs, is a low-noise, constant-frequency charge pump
DC/DC converter that can drive up to four LED
channels, providing a programmable constant current
level ranging from 1.8mA to 20mA per LED channel. It
can also drive higher current LEDs because its current
sinks can operate in parallel. It enables white or other
color LED applications that require uniform intensity
and/or linear progressions in brightness. Capable of
operating efficiently with DC voltage supplies ranging
from 2.8V to 5.5V, it is ideal for small, battery-powered
applications because very few external components are
needed: typically one small-dimension 1μF capacitor
across the C+ and C- pins and two small-dimension
2.2μF capacitors to GND from the VCC and Vout pins.
The ZLED7012’s Pulse Count Control (PCC) serial digital input is used to enable/disable the LEDs and set the
current level (14 settings using a nearly logarithmic
scale to provide a linear brightness progression). This
simple, high-speed interface allows efficient real-time
management of LEDs via microcontrollers or control
systems.
The ZLED7012’s features include integrated soft-start
circuitry to protect against excessive in-rush current during power-on and a low-current shutdown mode that
reduces quiescent current consumption to approximately
1μA (typical) by disconnecting the load from the input
when the EN/SET pin is low for a specified time.
Benefits
 Current matching accuracy: ±0.9% (typical)
 One-pin on/off or brightness control for up to four
LEDs via a simple PCC serial interface—no pulsewidth modulation or additional control circuit needed
 14 programmable current levels for achieving realtime control of effects such as LED fade-out or
sudden changes in brightness
 Low EMI and back-injected noise because the
charge pump is not inductor-based
 Very few external components needed for operation
 Flexible design enables diverse LED applications: up
to 20mA per channel
 LED driver family concept with low-voltage
six-channel LED driver ZLED7022
Available Support

Evaluation Kit
Physical Characteristics
 Voltage supply: 2.8V to 5.5V DC
 Operating temperature: -40°C to 85°C
 Small footprint 12-pin UTQFN package (2mm×2mm)
Features
 Low quiescent current in low-current shutdown
mode: 1μA typical; <2μA maximum
 Integrated thermal shutdown protection prevents
damage by shutting down the ZLED7012 if the die
junction temperature exceeds 160°C (typical)
 Fixed charge pump switching frequency: 1MHz (typ.)
 Soft-start feature protects against excessive
inrush current during power-on
ZLED7012 Application Circuit
© 2010 Zentrum Mikroelektronik Dresden AG - Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.
The information furnished in this publication is subject to changes without notice.
ZLED7012
Low-Voltage Four-Channel LED Driver
Block Diagram
Typical Applications
 LED backlighting for portable devices
 LED lighting for cell phones, smartphones. PDAs
 Illumination of digital photo frames
 Backlighting for GPS / navigation systems
 Low voltage LED lighting fixtures
 General purpose low-voltage industrial and consumer applications
Ordering Information
Product Sales Code
Description
Package
ZLED7012-ZI1R
ZLED7012 – Low-Voltage Four-Channel LED Driver
UTQFN12 (2x2)mm Tape & Reel
ZLED7012KIT-E1
ZLED7012 Evaluation Board
Kit
Sales and Further Information
www.zmdi.com
Zentrum Mikroelektronik
Dresden AG (ZMD AG)
Zentrum Mikroelektronik
Dresden AG, Japan Office
ZMD America, Inc.
Grenzstrasse 28
01109 Dresden
Germany
8413 Excelsior Drive
Suite 200
Madison, WI 53717
USA
Phone +49 (0)351.8822.7.533
Fax
+49 (0)351.8822.8.7533
Phone
Fax
+1 (608) 829-1987
+1 (631) 549-2882
2nd Floor, Shinbashi Tokyu Bldg.
4-21-3, Shinbashi, Minato-ku
Tokyo, 105-0004
Japan
Phone +81.3.6895.7410
Fax
+81.3.6895.7301
[email protected]
ZMD FAR EAST, Ltd.
3F, No. 51, Sec. 2,
Keelung Road
11052 Taipei
Taiwan
Phone +886.2.2377.8189
Fax
+886.2.2377.8199
DISCLAIMER: This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Zentrum Mikroelektronik Dresden AG (ZMD AG) assumes no obligation
regarding future manufacture unless otherwise agreed to in writing. The information furnished hereby is believed to be true and accurate. However, under no circumstances shall ZMD AG be liable to any customer, licensee, or
any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of or in any way related to the furnishing, performance, or use of this technical data. ZMD AG
hereby expressly disclaims any liability of ZMD AG to any customer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liability of ZMD AG for any damages in
connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty, tort (including negligence), strict liability, or otherwise.
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.
ZLED7012
Low-Voltage Four-Channel LED Driver
Contents
1
2
3
4
IC Characteristics .......................................................................................................................................................... 6
1.1.
Absolute Maximum Ratings ................................................................................................................................... 6
1.2.
Operating Conditions ............................................................................................................................................. 6
1.3.
Electrical Parameters ............................................................................................................................................. 6
1.4.
Typical Performance Graphs ................................................................................................................................. 7
Circuit Description ......................................................................................................................................................... 9
2.1.
Block Diagram........................................................................................................................................................ 9
2.2.
ZLED7012 Overview.............................................................................................................................................. 9
2.3.
ZLED7012 Soft-Start Feature .............................................................................................................................. 10
2.4.
ZLED7012 Low-Current Shutdown Mode ............................................................................................................ 10
2.5.
LED Current Control ............................................................................................................................................ 10
2.6.
PCC Serial Digital Interface ................................................................................................................................. 11
Operating Conditions................................................................................................................................................... 11
3.1.
RF Noise Reduction............................................................................................................................................. 11
3.2.
ZLED7012 Thermal Protection............................................................................................................................. 11
Application Circuit Design............................................................................................................................................ 12
4.1.
Applications.......................................................................................................................................................... 12
4.2.
External Components .......................................................................................................................................... 12
4.2.1.
External Capacitors Cout and Cin................................................................................................................. 12
4.2.2.
External Pump Capacitor .............................................................................................................................. 12
4.2.3.
LEDs ............................................................................................................................................................. 13
4.3.
Unused LED Driver Pins ...................................................................................................................................... 13
5
ESD Protection............................................................................................................................................................ 13
6
Pin Configuration and Package ................................................................................................................................... 13
7
Ordering Information ................................................................................................................................................... 15
8
Glossary ...................................................................................................................................................................... 15
9
Document Revision History ......................................................................................................................................... 15
Data Sheet
November 9, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
4 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
List of Figures
Figure 1.1
Operating Current ICC over Supply Voltage VCC Range (2.8V to 5.5V) at 25°C .............................................. 7
Figure 1.2
LED Current over Supply Voltage VCC Range (2.8V to 5.5V) for Outputs D0:D3 (LED0:LED3) ..................... 8
Figure 1.3
Shutdown Current ISD over Supply Voltage VCC Range (2.8V to 5.5V) ........................................................... 8
Figure 1.4
Current ICC over Temperature Range (-40°C to +85°C) .................................................................................. 8
Figure 1.5
Efficiency (%) over the VCC Range (2.8V to 5.5V) at 25°C ............................................................................. 9
Figure 2.1
PCC Serial Digital Interface Signal Timing ................................................................................................... 11
Figure 4.1
Basic Application Circuit using D2:D0 .......................................................................................................... 12
Figure 6.1
Pin Configuration ZLED7012 – Top View ..................................................................................................... 13
Figure 6.2
UTQFN-12 Package Drawing ....................................................................................................................... 14
List of Tables
Table 2.1
Current Output Settings ................................................................................................................................ 10
Table 6.1
Layout Requirements and Pin Descriptions—12-pin UTQFN Package ........................................................ 14
Table 6.2
UTQFN-12 Package Dimensions ................................................................................................................. 14
Data Sheet
November 9, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
5 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
1
IC Characteristics
1.1.
Absolute Maximum Ratings
No.
PARAMETER
SYMBOL
1.1.1
Input voltage referenced to
ground
VCC
1.1.2
EN/SET voltage referenced
to ground
VEN/SET
1.1.3
Maximum soldering
temperature
TLEAD
1.1.4
Maximum Thermal
Resistance
θJA
1.1.5
Junction temperature
TJ
1.2.
CONDITIONS
MIN
TYP
MAX
UNIT
-0.3
6.0
V
-0.3
VCC+0.3
V
At ZLED7012 lead;
10 seconds maximum
300
°C
UTQFN-12 package
60
°C/W
150
°C
MAX
UNIT
-40
Operating Conditions
No.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
1.2.1
Operating temperature
Tamb
-40
+85
°C
1.2.2
Input voltage
VCC
2.8
5.5
V
1.3.
Electrical Parameters
Except as noted, conditions for the following specifications are Tamb = -40°C to +85°C (25°C typical);
VCC = 2.8V to 5.5V; Cin = Cout = 2.2μF; Cpump = 1µF
Production testing is at 25°C. At other temperatures within the specified operating range, functional operation of the ZLED7012
and specified parameters are guaranteed by characterization, design, and process control.
Parameters marked with an asterisk (*) are guaranteed by design.
No.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
2.8 ≤ VCC ≤ 5.5;
ISET = 20mA; No Load
0.6
1.0
mA
ISHDN
VEN/SET = 0V
1.0
2.0
μA
ID-Match
ISET = 20mA
±0.9
%
Input Power Supply
1.3.1
Operating current
1.3.2
Current consumption in
shutdown mode
1.3.3
Current matching between
channels
ICC
Charge Pump
1.3.4
Charge pump frequency *
fCP
1.0
MHz
1.3.5
Soft-start time *
TSS
33.0
μs
Data Sheet
November 9, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
6 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
No.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
0.4
V
EN/SET Input (PCC Serial Digital Interface)
1.3.6
Enable threshold low
VEN_L
VCC = 2.8V
1.3.7
Enable threshold high
VEN_H
VCC = 5.5V
1.3.8
EN/SET low time
1.3.9
Minimum EN/SET high time TEN/SET_HI_MIN
1.3.10
Maximum EN/SET high time TEN/SET_HI_MAX
1.3.11
EN/SET off timeout *
TOFF
500
μs
1.3.12
EN/SET latch timeout *
TLAT
500
μs
1.3.13
Internal EN/SET pull-down
resistor
1.4.
TEN/SET_LO
1.4
V
0.3
75
50
ns
75
REN/SET_DOWN
μs
500
μs
kΩ
Typical Performance Graphs
Figure 1.1
Operating Current ICC over Supply Voltage VCC Range (2.8V to 5.5V) at 25°C
Data Sheet
November 9, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
7 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
Figure 1.2
LED Current over Supply Voltage VCC Range (2.8V to 5.5V) for Outputs D0:D3 (LED0:LED3)
TAMB = 25°C
ISET = 20mA
Figure 1.3
Shutdown Current ISD over Supply Voltage VCC Range (2.8V to 5.5V)
TAMB = 25°C
Figure 1.4
Current ICC over Temperature Range (-40°C to +85°C)
Data Sheet
November 9, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
8 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
Figure 1.5
2
Efficiency (%) over the VCC Range (2.8V to 5.5V) at 25°C
Circuit Description
2.1.
Block Diagram
2.2.
ZLED7012 Overview
The ZLED7012 is a low-noise, constant-frequency charge pump DC/DC converter for driving up to four LEDs with constant
current at a level controlled via a PCC serial digital interface, providing a uniform and linear brightness progression. Its 20mA
(maximum) current output per LED channel is optimal for low-voltage or battery-powered applications, such as portable
applications powered by 1-cell lithium batteries. The ZLED7012’s current sinks can operate in parallel for driving higher current
LEDs. Only a few, small external components are needed for typical applications. The ZLED7012’s charge pump operates at a
fixed frequency (1MHz typical) with minimal noise and harmonics.
Data Sheet
November 9, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
9 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
The current sinks [D3:D0] are controlled by the PCC serial data input on the EN/SET pin. Data is written to an internal data
register that sets the outputs to one of 14 current levels. The Vout pin provides a shared supply voltage for the LEDs. The
capacitor across the C+ and C- pins is the “pump capacitor” used by the charge pump.
2.3.
ZLED7012 Soft-Start Feature
The soft-start feature protects against excessive inrush currents during the start-up of the charge pump circuit. This prevents
potential transient noise effects that can affect initial performance, especially in battery-operated applications toward the end of
the battery life.
2.4.
ZLED7012 Low-Current Shutdown Mode
The ZLED7012 enters a low-current shutdown mode whenever its EN/SET input is held low longer than TOFF (500μs minimum). In the low-current shutdown mode, the ZLED7012 draws minimal current (ISHDN=1μA typical, 2μA maximum) and the
internal data register that controls output current is reset to 0, which disables the outputs.
2.5.
LED Current Control
The ZLED7012’s Pulse Count Control (PCC) serial digital interface is used to enable/disable the LED outputs and set the
constant current level to one of 14 settings using a nearly logarithmic scale (approximately 1.5dB difference between settings)
to provide a linear brightness progression as the current level increases/decreases. See Table 2.1 for the current level
settings.
Because [D3:D0] are independent constant current sinks, the voltage at the LED output being driven is determined by the
LED’s forward voltage (VF). This enables accurate LED brightness control and matching by the control system.
Table 2.1
Current Output Settings
Data Level
Current Output per Channel (mA)
1
20.0
2
17.0
3
14.0
4
12.0
5
10.0
6
8.6
7
7.0
8
6.0
9
5.0
10
4.2
11
3.6
12
3.0
13
2.4
14
1.8
Data Sheet
November 9, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
10 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
2.6.
PCC Serial Digital Interface
The ZLED7012 detects the rising edges of the control signal input on the EN/SET pin via an internal counter and decodes the
signal into one of the 14 current level settings given in Table 2.1. The control signal timing can vary (even during a programming cycle), and its frequency can range from high data rates (e.g., 1MHz) to very low rates (e.g., 15kHz). (Also see section
2.4.) After sending the constant current level code data, the control system holds the EN/SET signal high for time TLAT (500μs
minimum) so that the ZLED7012 latches the programmed current level code into the data register and the current level
becomes active as illustrated in Figure 2.1. The internal counter is then reset to zero to be ready for the next programming
cycle. This process is repeated for the next data sent by the control system for subsequent current level programming. See
section 2.4 regarding the low-current shutdown mode, which is entered when the EN/SET signal remains low for longer than
TOFF (500μs minimum).
Figure 2.1
PCC Serial Digital Interface Signal Timing
THI
TLO
TLAT
TOFF
EN/SET
1
2
Data Reg
n
1
n= 14
n
0
IOUT
3
Operating Conditions
3.1.
RF Noise Reduction
The ZLED7012 charge pump operates at a fixed frequency of 1MHz (typical) to limit noise and harmonics and prevent generation of RF interference by the ZLED7012, which could affect operation of local communication devices, such as cell phones.
The soft-start feature also prevents noise transients caused by inrush currents due to charge pump start-up.
The ZLED7012 has significantly lower back-injected noise at the input pin of the charge pump (typically 60mV peak-to-peak),
compared to inductor-based DC/DC boost converter solutions for white LED backlight applications (typically 10 times higher).
3.2.
ZLED7012 Thermal Protection
The ZLED7012 includes an on-board temperature sensing circuit that shuts down the ZLED7012 and turns off its outputs if the
die junction temperature exceeds 160°C (typical).
Data Sheet
November 9, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
11 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
4
Application Circuit Design
4.1.
Applications
The ZLED7012 is designed for white or other color LED applications requiring a controlled LED current that is generated from
a varying input voltage. Typical applications include main/sub LCD display backlighting, cell phones (including smartphones),
personal digital assistants (PDAs), MP3/MP4 devices, portable media players (PMPs), and general purpose low-voltage
industrial applications. See section 4.2.3 for details and requirements for the LEDs.
Figure 4.1
4.2.
4.2.1.
Basic Application Circuit using D2:D0
External Components
External Capacitors Cout and Cin
The values and type of capacitors used for Cin and Cout can affect several circuit parameters including transient performance,
turn-on time, and output ripple. Use low equivalent series resistance (ESR) ceramic capacitors (internal resistance < 100mΩ)
for best performance, lower costs, and component size reduction. Low ESR capacitors can enable applications at the highest
LED forward voltage with the lowest supply voltage. Tantalum and aluminum electrolytic are not generally recommended
because the ESR is typically in the range of several ohms.
Note: The recommended starting value when determining the optimal value for Cout is 2.2μF. There is often a design trade-off
between low ESR ratings and smaller size because physically larger ceramic capacitors usually have a relatively lower ESR,
which can improve the operating range of the circuit.
Cin is a bypass capacitor ( 2.2μF) essential to proper operation because it must deliver the dynamic current for the charge
pump.
4.2.2.
External Pump Capacitor
The external pump capacitor Cpump connected between the C+ and C- pins is an essential part of the ZLED7012’s internal
charge pump circuit. Because the ZLED7012 operates at a constant charge-pump frequency of 1MHz (typical), it is important
that the pump capacitance is greater than 0.47μF so it can transfer enough charge each cycle to supply sufficient load current.
To reduce voltage fluctuations on the supply line, do not use a value for the pump capacitor that is greater than the bypass
capacitor, Cin.
Data Sheet
November 9, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
12 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
Select a pump capacitor value in the range of 0.47µF to 2.2µF depending on output current requirements; 1µF is recommended for most applications. When designing the circuit to operate at high levels of output current, choose a higher value of
capacitance; low output currents do not require a large pump capacitor. As with Cin and Cout, low ESR ceramic capacitors are
recommended for the pump capacitor. See section 4.2.1 for a discussion of low ESR capacitors.
4.2.3.
LEDs
The ZLED7012’s low dropout current sinks are capable of driving most types of LEDs with forward voltages as high as 4.7V at
full current with a Vcc input supply of 2.8V to 5.5V. High-current LEDs can be driven by using any of the D3:D0 pins in parallel.
The brightness of the LEDs being driven will match despite any variations in the forward voltage (VF) of the individual LEDs
because the [D3:D0] output current sinks are matched with negligible voltage dependence (see section 1.3 for specifications).
4.3.
Unused LED Driver Pins
LED driver pin D0 must always be used. If any of the LED driver pins [D1:D3] are unused, disable the pin(s) by connecting
them to ground to avoid noise coupling.
5
ESD Protection
From each I/O or VCC pin to GND, there is an ESD protection of ±3000V. Between the I/O pins, there is an ESD protection of
±1000V according the Human Body Model (HBM). The ESD test follows the Human Body Model with 1.5 kΩ/100 pF based
on MIL 883-G, Method 3015.7.
Pin Configuration and Package
Data Sheet
November 9, 2010
D1
D2
D3
12
11
10
Pin Configuration ZLED7012 – Top View
VOUT
2
8
NC
VCC
3
7
GND
6
NC
EN/SET
9
5
1
C-
D0
4
Figure 6.1
C+
6
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
13 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
Table 6.1
Layout Requirements and Pin Descriptions—12-pin UTQFN Package
Pin
Name
No.
D0
1
LED output channel; pin must be used.
Vout
2
Charge pump output that drives load circuits; a 2.2μF (typical) capacitor must be connected from Vout to
GND pin.
Vcc
3
Power supply input; a 2.2μF (minimum) bypass capacitor must be connected from Vcc to GND pin.
C+
4
Positive terminal of external pump capacitor.
C-
5
Negative terminal of external pump capacitor.
EN/SET
6
PCC serial input for enabling/disabling LEDs and setting current levels.
GND
7
Ground.
NC
8
No connection.
NC
9
No connection.
D3
10
LED output; if not used, connect to ground to avoid noise coupling.
D2
11
LED output; if not used, connect to ground to avoid noise coupling.
D1
12
LED output; if not used, connect to ground to avoid noise coupling.
Figure 6.2
Description
UTQFN-12 Package Drawing
e
b
Pin 1
E
A
A1
A2
D
Bottom View
Table 6.2
Side View
UTQFN-12 Package Dimensions
Symbol
A
A1
A2
Data Sheet
November 9, 2010
Min
0.50
0.00
Dimension (mm)
Nom
0.55
-0.25
Max
0.60
0.05
Symbol
D
E
e
b
Min
1.95
1.95
0.20
Dimension (mm)
Nom
2.00
2.00
0.50
0.25
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
Max
2.05
2.05
0.30
14 of 15
ZLED7012
Low-Voltage Four-Channel LED Driver
7
Ordering Information
Product Sales Code
Description
Package
ZLED7012-ZI1R
ZLED7012 – Low-Voltage Four-Channel LED Driver
UTQFN12 (2x2)mm, Tape & Reel
ZLED7012KIT-E1
ZLED7012 Evaluation Board
Kit
8
Glossary
Term
Description
EMI
Electromagnetic Interference
ESR
Equivalent Series Resistance: a capacitor parameter affected by characteristics such as component
composition, size, leads, internal connections, and temperature
PCC
Pulse Count Control: a serial digital interface
9
Document Revision History
Revision
Date
1.0
November 9, 2010
Description
Official Release
Sales and Further Information
www.zmdi.com
Zentrum Mikroelektronik
Dresden AG (ZMD AG)
Zentrum Mikroelektronik
Dresden AG, Japan Office
ZMD America, Inc.
Grenzstrasse 28
01109 Dresden
Germany
8413 Excelsior Drive
Suite 200
Madison, WI 53717
USA
Phone +49 (0)351.8822.7.533
Fax
+49 (0)351.8822.8.7533
Phone
Fax
+1 (608) 829-1987
+1 (631) 549-2882
[email protected]
2nd Floor, Shinbashi Tokyu Bldg.
4-21-3, Shinbashi, Minato-ku
Tokyo, 105-0004
Japan
Phone +81.3.6895.7410
Fax
+81.3.6895.7301
ZMD FAR EAST, Ltd.
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Taiwan
Phone +886.2.2377.8189
Fax
+886.2.2377.8199
DISCLAIMER: This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Zentrum Mikroelektronik Dresden AG (ZMD AG) assumes no obligation
regarding future manufacture unless otherwise agreed to in writing. The information furnished hereby is believed to be true and accurate. However, under no circumstances shall ZMD AG be liable to any customer, licensee, or
any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of or in any way related to the furnishing, performance, or use of this technical data. ZMD AG
hereby expressly disclaims any liability of ZMD AG to any customer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liability of ZMD AG for any damages in
connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty, tort (including negligence), strict liability, or otherwise.
Data Sheet
November 9, 2010
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.0
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
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