Data Sheets - Skyworks Solutions, Inc.

DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
General Description
Features
The AAT3105 is a charge-pump based, current-source
white LED driver capable of driving one to four LEDs up
to 30mA, each. It automatically switches between 1x
mode and 2x mode to maintain the highest efficiency
and optimal LED current matching.
• Drives up to 4 LEDs at up to 30mA each
• Automatic Switching Between 1x and 2x Modes
• 0.85MHz Switching Frequency
• Linear LED Output Current Control
• Universal PWM Interface
• ±10% LED Output Current Accuracy
• ±3% LED Output Current Matching
• Low-current Shutdown Mode
• Built-in Thermal Protection
• Automatic Soft-start
• Available in 2x2mm SC70JW-10 Package
The AAT3105 charge pump’s 1x mode (bypass mode)
has very low resistance, allowing LED current regulation
to be maintained with input supply voltage approaching
the LED forward voltage.
LED brightness is controlled using a universal PWM interface. The AAT3105 is available in a Pb-free, 2x2mm
10-lead SC70JW-10 package
Applications
• Cell Phones
• Digital Still Cameras
• MP3 Players
• Personal Data Assistants (PDAs)
Typical Application
IN
OUT
C+
CIN
1µF
AAT3105
CP
1µF
C OUT
1µF
D1
D2
C-
D3
EN/PWM
Interface
EN/PWM
D4
GND
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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1
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Pin Description
Pin #
Name
1
D2
2
D1
3
OUT
4
5
6
CC+
GND
7
EN/PWM
8
IN
9
D4
10
D3
Function
LED2 Current Source Output. D2 is the output of LED2 current source. Connect LED2’s anode to D2 and its
cathode to GND.
LED1 Current Source Output. D1 is the output of LED1 current source. Connect LED1’s anode to D1 and its
cathode to GND.
Charge Pump Output. OUT is the output of the charge pump. Bypass OUT to GND with a 1μF or larger ceramic capacitor.
Charge Pump Capacitor Negative Node.
Charge Pump Capacitor Positive Node. Connect a 1μF ceramic capacitor between C+ and C-.
Analog Ground. Connect this pin to the system’s analog ground plane.
LED Enable and control input. EN/PWM is the ON/OFF control for the LED and the PWM input for the AAT3105
to control the LED brightness.
Power source input. Connect IN to the power source, typically the battery. Bypass IN to GND with a 1μF or
larger ceramic capacitor.
LED4 Current Source Output. D4 is the output of LED4 current source. Connect LED4’s anode to D4 and its
cathode to GND.
LED3 Current Source Output. D3 is the output of LED3 current source. Connect LED3’s anode to D3 and its
cathode to GND.
Pin Configuration
SC70JW-10
(Top View)
D2
D1
OUT
CC+
2
1
10
2
9
3
8
4
7
5
6
D3
D4
IN
EN/PWM
GND
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Absolute Maximum Ratings1
Symbol
VIN
VEN
TS
TJ
TLEAD
Description
IN, C+, C-, OUT, D1, D2, D3, and D4 Pin Voltages to GND
EN/PWM Pin Voltage to GND
Storage Temperature Range
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
Units
-0.3 to 6.0
-0.3 to VIN + 0.3
-65 to 150
-40 to 150
300
V
V
°C
°C
°C
Value
Units
625
160
mW
°C/W
Thermal Information
Symbol
PD
θJA
Description
Maximum Power Dissipation2,3
Maximum Thermal Resistance 3
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Mounted on an FR4 circuit board.
3. Derate 6.25mW/°C above 40°C ambient temperature.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202125A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 2, 2012
3
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Electrical Characteristics
IN = EN = 3.6V, CIN = 1µF, COUT = 1µF, CP = 1µF, TA = -40°C to 85°C unless otherwise noted. Typical values are at TA
= 25°C.
Symbol
Description
Conditions
Input Power Supply
IN
Input Voltage Range
IIN
Input Operating Current
IIN(SHDN)
Input Shutdown Current
Charge Pump Section
IOUT
OUT Maximum Output Current
VOUT
Charge Pump Output Voltage
fOSC
Charge Pump Oscillator Frequency
VIN_(TH)
Charge Pump Mode Hysteresis
tOUT
LED Output Current Start-up Time
LED Current Source Outputs
ID_(MAX)
D1 – D4 Current Accuracy
ΔID_(MAX)
D1 – D4 Current Matching
ID_(10%)
D1 – D4 Current Accuracy
D1- D4 Charge Pump Mode
VD_(TH)
Transition Threshold
EN/PWM Current Control
EN/PWM Input High Threshold
VENH
Voltage
EN/PWM Input Low Threshold
VENL
Voltage
IEN(LKG)
EN/PWM Input Leakage Current
tPWM(ON)
PWM Control Turn-on Delay
tEN/PWM
EN/PWM Input OFF Timeout
fPWM
PWM Control Frequency
4
Min
Typ
Max
Units
6.1
5.5
8.0
V
mA
3.0
4.6
mA
6.0
8.0
1
mA
μA
2.7
IN = 5.5V, EN = IN, VD1 = VD2 = VD3= VD4 = 0V
IN = 5.5V, EN = IN, ID1 = ID2 = ID3 = ID4 = FS, VD1 =
VD2 = VD3 = VD4 = IN – 1.5V, Excluding IDN current
Operating, ID1 = ID2 = ID3 = ID4 = OPEN
EN/PWM = GND
When charge pump is on
0.60
ID1 = ID2 = ID3 = ID4 =30mA
EN/PWM =IN
Duty Cycle = 100%
Duty Cycle = 100%, VIN – VF = 1.5V
Duty Cycle = 10%, VIN – VF = 1.5V
27
-3
ID1 = ID2 = ID3 = ID4 =30mA, VIN – VD1 is measured.
150
5
0.85
150
110
1.05
250
30
33
3
3.2
mA
%
mA
380
mV
1.4
EN/PWM = IN = 5V
mA
V
MHz
mV
μs
V
-1
0.4
V
1
μA
µs
ms
kHz
2
0.15
Duty cycle = 80%
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50
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Typical Characteristics
VIN = 3.6V, CIN = COUT = CP = 1μF; TA = 25°C, unless otherwise noted.
Shutdown Current vs. Temperature
Quiescent Current vs. Input Voltage
(1x Mode)
7.0
VIN = 5.5V
VIN = 2.7V
0.08
Quiescent Current (mA)
ShutdownnCurrent (µA)
0.10
0.06
0.04
0.02
0.00
-40
-15
10
35
60
5.0
4.0
3.0
85°C
25°C
-40°C
2.0
1.0
85
Temperature (°C)
6.0
2.7
Frequency (KHz)
Operating Current (mA)
6.0
5.8
5.6
5.4
3.1
3.5
3.9
4.3
4.7
5.1
5.1
5.5
-20
0
31
0.8%
30
0.6%
0.4%
0.2%
60
40
60
80
30
Current per Channel (mA)
1.0%
D1
D2
D3
D4
Matching
20
(FPWM = 25KHz)
32
Temperature (°C)
820
LED Current Control vs. PWM Duty Ratio
1.2%
35
840
33
10
860
Temperature (°C)
Current Matching vs. Temperature
-15
880
800
-40
5.5
Supply Voltage (V)
LED Current per Channel (mA)
4.7
900
85°C
25°C
-40°C
6.2
27
-40
4.3
Frequency vs. Temperature
6.4
28
3.9
Supply Voltage (V)
(2x Mode)
29
3.5
No Load Operating Current vs. Input Voltage
5.2
2.7
3.1
0.0%
85
24
18
12
6
0
10
20
30
40
50
60
70
80
90
100
Duty Ratio (%)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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5
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Typical Characteristics
VIN = 3.6V, CIN = COUT = CP = 1μF; TA = 25°C, unless otherwise noted.
Efficiency vs. Input Voltage
EN/SET Input OFF Timeout
vs. Input Voltage
800
100%
750
700
TEN/SET(OFF) (µs)
Efficiency (%)
80%
60%
40%
VF = 2.7V
VF = 3.0V
VF = 3.3V
VF = 3.6V
20%
0%
2.7
3.1
3.5
3.9
4.3
4.7
5.1
550
500
450
300
2.7
5.5
3.1
0.8
0.6
85°C
25°C
-40°C
0.4
3.1
3.5
3.9
4.3
4.7
5.1
Input Voltage (V)
5.5
85°C
25°C
-40°C
0.4
0.2
2.7
5.5
3.1
3.9
4.3
4.7
5.1
Turn On to 2X Mode
(VIN = 3.2V; 30mA/ch)
EN
(4V/div)
0
IIN
(250mA/div)
0
VD1
(2V/div)
0
VOUT
(2V/div)
0
Time (100µs/div)
3.5
Input Voltage (V)
(VIN = 4.2V; 30mA/ch)
6
5.1
0.6
Turn On to 1X Mode
VOUT
(2V/div)
4.7
1.2
0.8
VD1
(2V/div)
4.3
EN Input Low Threshold Voltage
vs. Input Voltage
1.0
IIN
(100mA/div)
3.9
Input Voltage (V)
1.0
EN
(4V/div)
3.5
EN Input High Threshold Voltage
vs. Input Voltage
0.2
2.7
85°C
25°C
-40°C
350
VEN(L) (V)
VEN(H) (V)
600
400
Input Voltage (V)
1.2
650
0
0
0
0
Time (200µs/div)
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5.5
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Typical Characteristics
VIN = 3.6V, CIN = COUT = CP = 1μF; TA = 25°C, unless otherwise noted.
Output Ripple Waveform
Turn Off from 1X Mode
(VIN = 3.2V; 2X Mode; 30mA/ch)
(30mA/ch)
EN
(2V/div)
VIN
(20mV/div)
0
VD1
(2V/div)
0
IIN
(200mA/div)
VOUT
(50mV/div)
0
0
Time (800ns/div)
0
Time (200µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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7
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Functional Block Diagram
C+
C–
OUT
D1
IN
Two-Mode
CP Control
VF Monitoring
D2
4
D3
2x
D4
1x
5
EN/ PWM
PWM Control
Functional Description
The AAT3105 is a low-cost charge-pump solution designed
to drive up to four white LEDs. The charge pump operates
from a 2.7V to 5.5V power source and converts it to voltage levels necessary to drive the LEDs. LED current is
individually controlled through integrated current sources
powered from the output of the charge pump. Low 1x
charge-pump output resistance and low dropout voltage
current sources allow the charge pump to stay in 1x mode
with an input voltage as low as 3.8V and LED forward
voltages of 3.5V. After entering 2x mode, the charge
pump remains in 2x mode until the device resets.
The AAT3105 requires only three external components:
one 1μF ceramic capacitor for the charge pump flying
capacitor (CP), one 1μF ceramic input capacitor (CIN),
8
IREF
GND
5 Bits DAC
one 1μF ceramic output capacitor (COUT). The four constant current outputs of the AAT3105 (D1 to D4) can
drive four individual LEDs with a maximum current of
30mA each. A PWM interface enables the AAT3105 to
change the LED current through the EN/PWM pin.
PWM Interface
The AAT3105 uses a simple PWM interface to control the
effective LED current (RMS) of its current source outputs. The PWM signal should fit the requirements listed
in the electrical characteristic table for proper operation.
When the EN/PWM pin is constantly pulled high, which
means 100% duty ratio, the source current per channel
is typically 30mA. When the EN/PWM pin is pulled low
for less than 150µs, the current source will output 0mA
of current and the charge pump status will remain
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
unchanged. By feeding the EN/PWM pin with a proper
PWM signal, the RMS current of current source outputs
is proportional to the duty ratio of the PWM signal with
very little error, which is introduced timing delay. If EN/
PWM is kept low for longer than 1ms, the device will
enter shutdown mode. In shutdown mode, the device
draws less than 1µA current and all current source outputs are inactive.
The relationship between PWM duty ratio and LED current per channel is shown in Table 1. The PWM signal
should meet the timing requirements shown in the
Electrical Characteristics section of this datasheet in
order to guarantee proper operation and accuracy. For
example, if the minimum PWM duty ratio is designed as
10%, then the PWM frequency should be higher than
6Khz to meet the minimum limit of the EN/PWM input off
time, which is 150µs.
EN/PWM Duty Cycle
(FPWM = 25Khz)
D1-D4 Current (mA)
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
29.9
26.7
23.8
20.8
17.9
15
12
9.1
6.2
3.2
LED Selection
The AAT3105 is specifically designed for driving white
LEDs. However, the device design will allow the AAT3105
to drive most types of LEDs with forward voltage
specifications ranging from 2.2V to 4.7V. LED applications
may include mixed arrangements for display backlighting,
keypad display, and any other application that demands
a constant current source generated from a varying
input voltage. Since the D1 to D4 constant current
sources are matched with negligible supply voltage
dependence, the constant current channels will be
matched regardless of their respective LED forward
voltage (VF) levels.
The low dropout current sources in the AAT3105
maximize performance and make it capable of driving
LEDs with high forward voltages. Multiple channels can
be combined to obtain a higher LED drive current without
complication.
Any unused channel should be connected to GND; the
device will detect and shut down the channel. Do not
connect any unused channel to the OUT pin.
Device Switching Noise Performance
Table 1: PWM Duty Cycle vs. LED Current.
LED Current vs. PWM Duty Ratio
(FPWM = 25KHz)
30
Current per Channel (mA)
Application Information
24
The AAT3105 operates at a fixed frequency of approximately 0.85MHz to control noise and limit harmonics
that can interfere with the RF operation of mobile communication devices. Back-injected noise appearing on
the input pin of the charge pump is 20mV peak-to peak,
typically ten times less than inductor-based DC/DC boost
converter white LED backlight solutions. The AAT3105
soft-start feature prevents noise transient effects associated with inrush currents during start-up of the charge
pump circuit.
18
Shutdown
12
Since the current switches are the only power returns for
all loads, there is no leakage current when all source
switches are disabled. To enter shutdown operation, the
EN/PWM input for the AAT3105 should be strobed low.
After tOFF (500μs), the AAT3105 will be shut down and
typically draws less than 1μA from the input. Registers
are reset to 0 in shutdown.
6
0
10
20
30
40
50
60
70
80
90
100
Duty Ratio (%)
Figure 1: PWM Duty Cycle vs. LED Current.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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9
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Power Efficiency and Device Evaluation
The charge pump efficiency discussion in the following
sections accounts only for efficiency of the charge pump
section itself. Due to the unique circuit architecture and
design of the AAT3105, it is very difficult to measure
efficiency in terms of a percent value comparing input
power over output power.
Since the AAT3105 outputs are pure constant current
sources and typically drive individual loads, it is difficult
to measure the output voltage for a given output to
derive an overall output power measurement. For any
given application, white LED forward voltage levels can
differ, yet the output drive current will be maintained as
a constant.
This makes quantifying output power a difficult task
when taken in the context of comparing to other white
LED driver circuit topologies. A better way to quantify
total device efficiency is to observe the total input power
to the device for a given LED current drive level. The
best white LED driver for a given application should be
based on trade-offs of size, external component count,
reliability, operating range, and total energy usage, not
just output power over input power efficiency.
An expression for the ideal efficiency (η) in 1x chargepump mode can be expressed as:
VF
η (%) = V · 100
IN
For a charge pump led driver with VF of 3.2V and 4.2V
input voltage, the theoretical efficiency is 76%. Due to
internal switching losses and IC quiescent current consumption, the actual efficiency can be measured at
73%.
2x Charge Pump Mode Efficiency
The AAT3105 contains a charge pump which will boost
the input supply voltage in the event where VIN is less
than the voltage required to supply the output. The efficiency (η) can be simply defined as a linear voltage
regulator with an effective output voltage that is equal
to one and two times the input voltage. Efficiency (η) for
an ideal 2x charge pump can typically be expressed as
the output power divided by the input power.
η=
PF
PIN
The AAT3105 efficiency may be quantified under very
specific conditions and is dependent upon the input voltage versus the output voltage across the loads applied
to outputs D1 through D4 for a given constant current
setting. Depending on the combination of VIN and voltages sensed at the current sources, the device will operate in load switch mode. When any one of the voltages
sensed at the current sources nears dropout, the device
will operate in 2x charge pump mode.
In addition, with an ideal 2x charge pump, the output
current may be expressed as 1/3 of the input current.
The expression to define the ideal efficiency (η) can be
rewritten as
Each of these modes will yield different efficiency values.
Refer to the following two sections for explanations for
each operational mode.
VF
η (%) = 2 · V · 100
1x Mode Efficiency
The AAT3105 1x mode is operational at all times and
functions alone to enhance device power conversion efficiency when VIN is higher than the voltage across the
load. When in 1x mode, voltage conversion efficiency is
defined as output power divided by input power.
POUT VF · ILED
VF · ILED
VF
η= P = V ·I =V ·2·I
≈ 2·V
IN
IN
IN
IN
OUT
IN
-or-
IN
For a charge pump current source driver with VF of 3.2V
and 2.7V input voltage, the theoretical efficiency is 59%.
Due to internal switching losses and IC quiescent current
consumption, the actual efficiency can be measured at
57%. Efficiency will decrease substantially as load
current drops below 1mA or when the voltage level at VIN
approaches the voltage level at VOUT.
POUT VF · ILED VF · ILED VF
≈
η= P = V ·I =V ·I
VIN
IN
IN
IN
IN
OUT
10
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Additional Applications
PCB Layout Considerations
The current sources of the AAT3105 can be combined
freely to drive higher current levels through one LED. As
an example, a single LED can be driven at 120mA by
combining together D1 through D4 outputs.
When designing a PCB for the AAT3105, the key requirements are:
For lower-cost applications, the flying capacitor can be
removed; C+ and C- should be floating. This will force
the AAT3105 to operate in 1x mode. To maintain regulated LED current, the input supply voltage has to be
higher than the charge pump's dropout voltage in 1x
mode plus the forward voltage of the LED at the preset
LED current.
Input Voltage
2.7V to 5.5V
IN
C+
C IN
1µF
CP
1µF
1. Place the flying capacitor C1 as close to the chip as
possible; otherwise 2x mode performance will be
compromised.
2. Place the input and output decoupling capacitors C2
and C3 as close to the chip as possible to reduce
switching noise and output ripple.
OUT
AAT3105
C OUT
1µF
D1
D2
C-
D3
EN/PWM
Interface
D4
EN/PWM
GND
Figure 1: Higher Current, Single LED Application.
Input Voltage
> VF + VDROP
IN
C+
C IN
1µF
OUT
AAT3105
C OUT
1µF
D1
D2
C-
D3
EN/PWM
Interface
EN/PWM
D4
GND
Figure 2: Lower Cost 1x Mode Application.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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11
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Evaluation Board PCB Layout
Figure 3: AAT3105 Evaluation Board Top Layer.
Figure 4: AAT3105 Evaluation Board Bottom Layer.
Evaluation Board Schematic
DC+
DC-
J1
DC+
C
1
10µF
2
VIN
C2
1µF
3
OUT
JP1
D4 D3 D2 D1
JP2
JP4
U1
JP5
C1
1µF
JP3
1
2
CC+
IN
3
4
5
D2
D3
D1
D4
OUT
VIN
C- EN/PWM
C+
GND
AAT3105
10
9
8
7
6
EN
C3
1µF
EN
PWM
R2
20K
C6
4.7µF
R5 R4 R3
1K 1K 1K
S1
S1
UP
1
2
3
4
U2
PIC12F675
VDD
VSS
GP5
GP0
GP4
GP1
GP3
GP2
7
6
C4
0.1µF
5
S2
S2
DOWN
S3
CYCLE
VR1
POT10K
8
S3
R6
330
LED1
Green
PWM
Figure 5: AAT3105 Evaluation Board Schematic.
12
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R7
330
LED2
Red
MCU Power
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Evaluation Board Bill of Materials (BOM)
Component
Part Number
U1
AAT3105IJQ-T1
U2
C1, C2, C3
C4
C6
C
D1-D4
LED1
LED2
R2
R3-R5
R6-R7
R8
R9-R12
S1
S2
S3
VR1
PIC12F675
GRM188R61A105KA61
GRM219R71C104KA01
GRM219R61A475KE19
N/A
LW M673
21UGC/TR8 Green LED; 0805
21SRC/TR8 Red LED; 0805
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
PTS645TL50
PTS645TL50
PTS645TL50
EVN-5ESX50B14
Description
High Efficiency 1x/2x Charge Pump for White
LED; SC70JW-10 Package
8-Bit CMOS, FLASH-Based μC; 8-Pin MCU
Cap Ceramic 1uF10V X5R 10% 0603
Cap Ceramic 0.1µF10V X7R 10% 0805
Cap Ceramic 4.7µF10V X5R 10% 0805
Not Soldered
Mini TOPLED White LED; SMD
LED0 CMD15
LED7 CMD15
20K, 1/16W 1% 0603 SMD
1K, 1/16W 1% 0603 SMD
330R, 1/16W 1% 0603 SMD
1M, 1/16W 1% 0603 SMD
0R, 1/16W 1% 0603 SMD
Switch Tact, SPST, 5mm
Switch Tact, SPST, 5mm
Switch Tact, SPST, 5mm
10K POT; 3mm Squared SMD
Manufacturer
Skyworks
Microchip
Murata
Murata
Murata
N/A
Osram
Chicago Miniature Lamp
Chicago Miniature Lamp
Vishay
Vishay
Vishay
Vishay
Vishay
ITT Industries
ITT Industries
ITT Industries
Panasonic-ECG
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202125A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 2, 2012
13
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Ordering Information
Package
Interface
Current Control, Inverting
Marking1
Part Number (Tape and Reel)2
SC70JW-10
PWM
Linear
5WXYY
AAT3105IJQ-T1
Skyworks Green™ products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of Green™, document number
SQ04-0074.
Packaging Information
SC70JW-10
2.20 ± 0.20
1.75 ± 0.10
0.40 BSC
0.225 ± 0.075
Top View
0.100
7° ± 3°
0.45 ± 0.10
4° ± 4°
0.05 ± 0.05
0.15 ± 0.05
1.10 MAX
0.85 ± 0.15
2.00 ± 0.20
2.10 ± 0.30
Side View
End View
All dimensions in millimeters.
1. XYY = assembly and date code.
2. Sample stock is generally held on part numbers listed in BOLD.
14
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202125A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 2, 2012
DATA SHEET
AAT3105
Low Cost 1x/2x Four-Channel Charge Pump WLED Driver
Copyright © 2012 Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a
service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no
responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes.
No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale.
THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR
PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES
NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM
THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper
use or sale.
Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product
design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters.
Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for
identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202125A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 2, 2012
15