aat3351 data sheet - Skyworks Solutions, Inc.

DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
General Description
Features
The AAT3351 is a low-noise, constant-frequency charge
pump DC/DC converter that uses a dual-mode load
switch (1x) and fractional (1.5x) charge pump to maximize efficiency for white LED applications. The AAT3351
is capable of driving 4 white LEDs at a total of 120mA
from single 2.7V to 5.5V input. The current sinks may be
operated individually or in parallel while driving highercurrent LEDs. A low external parts count (two 1µF flying
capacitors and two small 1µF capacitors at VIN and VOUT)
makes the AAT3351 ideal for small battery-powered
applications.
•
•
•
•
•
•
•
•
•
Drives up to 4 LEDs at up to 30mA, each
Automatic Switching Between 1x and 1.5x Modes
1MHz Switching Frequency
Linear LED Output Current Control
▪ Single-wire, S2Cwire Interface
▪32-step
±10% LED Output Current Accuracy
3% LED Output Current Matching
Low-Current Shutdown Mode
Automatic Soft-Start
TSOPJW-14 and TDFN33-12 Packages
Skyworks' S2Cwire™ serial digital input is used to enable,
disable, and set current to one of 32 levels for the LEDs.
Applications
The AAT3351 is equipped with built-in short-circuit protection. The soft-start circuitry prevents excessive inrush
current at start-up and mode transitions. The AAT3351
family is available in Pb-free, space-saving TSOPJW and
TDFN33 packages, and operates over the -40°C to
+85°C ambient temperature range.
•
•
•
•
•
•
Cellular and Smart Phones
Digital Still and Video Cameras
PDAs
Portable Devices
Portable Media Players
Other White LED Backlighting
Typical Application
C1
1µF
VBATTERY
3.6V
C IN
1µF
EN/SET
S2Cwire Serial Control
C1+
C2+
C1-
C2-
IN
OUT
C2
1µF
C OUT
1µF
AAT3351
D1
D2
D3
D4
D1
EN/SET
D2
D3
D4
GND
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
1
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Pin Descriptions
Pin Number
TDFN33-12
TSOPJW-14
Name
1
2
D4
2
3
12
11
EN/SET
C2-
4
10
C2+
5
9
OUT
6
8
C1-
7
7
C1+
8
6
IN
9
5
GND
10
4
D1
11
3
D2
12
1
D3
N/A
EP
13, 14
N/A
N/C
EP
Function
Backlight LED 4 current sink. D4 controls the current through backlight LED 4.
Connect the cathode of backlight LED 4 to D4. If not used, connect D4 to OUT.
S2Cwire serial interface control pin.
Negative terminal of charge pump capacitor 2.
Positive terminal of charge pump capacitor 2. Connect the 1μF charge pump
capacitor 2 from C2+ to C2-.
Charge pump output. OUT is the output of the charge pump and supplies current
to the backlight LEDs. Connect the backlight LED anodes to OUT. Bypass OUT to
PGND with a 1μF or larger ceramic capacitor as close to the AAT3351 as possible.
Negative terminal of charge pump capacitor 1.
Positive terminal of charge pump capacitor 1. Connect the 1μF charge pump
capacitor 1 from C1+ to C1-.
Power input. Connect IN to the input source voltage. Bypass IN to GND with a 1μF
or larger ceramic capacitor as close to the AAT3351 as possible.
Ground pin.
Backlight LED 1 current sink. D1 controls the current through backlight LED 1.
Connect the cathode of backlight LED 1 to D1. If not used, connect D1 to OUT.
Backlight LED 2 current sink. D2 controls the current through backlight LED 2.
Connect the cathode of backlight LED 2 to D2. If not used, connect D2 to OUT.
Backlight LED 3 current sink. D3 controls the current through backlight LED 3.
Connect the cathode of backlight LED 3 to D3. If not used, connect D3 to OUT.
Not connected.
Exposed paddle (bottom). Connect to GND directly beneath package.
Pin Configuration
TSOPJW-14
(Top View)
2
D3
D4
D2
D1
GND
IN
C1+
1
14
2
13
3
12
4
11
5
10
6
9
7
8
N/C
N/C
EN/SET
C2C2+
OUT
C1
TDFN33-12
(Top View)
D4
EN/SET
C2C2+
OUT
C1-
1
12
2
11
3
10
4
9
5
8
6
7
D3
D2
D1
GND
IN
C1+
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Absolute Maximum Ratings
TA = 25°C unless otherwise noted.
Symbol
VIN
VOUT
VEN/SET
VEN/SET(MAX)
IOUT
TJ
Description
Input Voltage
Charge Pump Output
EN/SET to GND Voltage
Maximum VEN/SET to VIN Voltage (VEN/SET - VIN)
Maximum DC Output Current
Operating Junction Temperature Range
Value
Units
-0.3 to 6
-0.3 to 6
-0.3 to 6
+0.3
150
-40 to 150
V
V
V
V
mA
°C
Value
Units
Thermal Information1
Symbol
Description
PD
Maximum Power Dissipation1
θJA
Maximum Thermal Resistance
TDFN33-122
TSOPJW-143
TDFN33-12
TSOPJW-14
2000
625
50
160
mW
°C/W
1. Mounted on 1.6mm thick FR4 circuit board.
2. Derate 25mW/°C above 25°C ambient temperature.
3. Derate 6.25mW/°C above 25°C ambient temperature.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
3
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Electrical Characteristics
VIN = 3.6V; CIN = COUT = 1µF; C1 = C2 = 1µF; TA = -40°C to 85°C unless otherwise noted. Typical values are TA = 25°C.
Symbol
Description
Input Power Supply
VIN
Input Voltage Range
IIN
Input Operating Current
IIN(SHDN)
VIN_(TH)
LED Current
ID_(MAX)
ID_(DATA31)
ΔI(D_X)/ID_AVG)
VD_(TH)
Shutdown Current
Charge Pump Mode Hysteresis
Sink Outputs
D1-D4 Current Accuracy
D1-D4 Current Accuracy
D1-D4 Current Matching1
Hysteresis for Mode Change
IOUT(MAX)
Charge Pump Maximum Output Current
fOSC
Clock Frequency
VD_(TH)
Charge Pump Mode Transition Threshold
tSS
Charge Pump Startup Time
EN/SET S2Cwire Control
VENH
EN/SET Input High Threshold Voltage
VENL
EN/SET Input Low Threshold Voltage
IEN(LKG)
EN Input Leakage Current
tEN/SET(HI_MIN)
EN/SET Minimum High Time
tEN/SET(HI_MAX)
EN/SET Maximum High Time
tEN/SET(LOW)
EN/SET Input Low Time
t EN/SET(OFF)
EN/SET Input OFF Timeout
tEN/SET(LAT)
EN/SET Input Latch Timeout3
Conditions
Min
-40°C ≤ TA ≤ 85°C
1x Mode, ID1 = ID2 = ID3
= ID4 = OFF
EN/SET = IN
1.5x Mode, ID1 = ID2 =
ID3 = ID4 = OFF
EN/SET = GND
1x to 1.5x Transition at Any IDX
2.7
EN/SET = S2C DATA 1
EN/SET = S2C DATA 31
EN/SET = S2C DATA 1, ID1 = ID2 = ID3 =
ID4 = 30mA
ID1 = ID2 = ID3 = ID4 = 30mA, 1.5x to 1x
Mode
VIN = 3.0V, VF = 4.0V
27
Typ
Max
Units
5.5
V
2
4
6
7.2
µA
V
33
mA
mA
±3
0.15
%
0.25
150
1
0.15
150
EN/SET = IN; VIN - VF = 1V
1.4
EN/SET = IN = 5V
0.4
1
-1
50
0.3
75
75
500
500
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
V
mA
MHz
V
µs
1. LED current match is defined as 100 (IDX - IAVG)/IAVG.
2. 1x mode output impedance is defined as (VIN - VOUT)/IOUT.
3. If the part has been shut down, the latch time will be 500µs longer for soft start of charge pump.
4
1
0.15
30
0.5
mA
V
V
µA
ns
µs
µs
µs
µs
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Typical Characteristics
VIN = 3.6V, CIN = COUT = C1 = C2 = 1μF; TA = 25°C, unless otherwise noted.
No Load Operating Current vs. Input Voltage
(1x Mode)
No Load Operating Current vs. Input Voltage
(1.5x Mode)
2.5
8
2.45
7
2.4
6
IIN (mA)
IIN (mA)
2.35
2.3
2.25
2.2
85°C
25°C
0°C
-40°C
2.15
2.1
2.05
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5
4
3
85°C
25°C
0°C
-40°C
2
1
0
5.5
2.7
3.1
3.5
Input Voltage (V)
4.7
0.60
100
Efficiency (%)
0.40
0.30
0.20
0.10
VF = 3.3V
VF = 3.0V
VF = 2.7V
-15
10
35
60
85
85
70
55
40
2.7
3.1
Temperature (°C)
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
1.5x Output Voltage vs. Load Current
1.5x Mode Operating Characteristics
(VIN = 3.3V; 30mA/ch Backlight, 1.5x Mode, COUT = 1µF)
5.5
VOUT
(AC coupled) 0
(50mV/div)
C1+
(2V/div)
5
4.5
4
VIN = 3.3V
VIN = 3.6V
VIN = 4.2V
3.5
3
5.5
(DATA = 1, 30mA/ch)
0.50
0.00
-40
5.1
Efficiency vs. Input Voltage
(30mA/ch)
Current Matching (%)
4.3
Input Voltage (V)
Backlight Current Matching vs. Temperature
Output Voltage (V)
3.9
0
50
100
Load Current (mA)
150
200
C2+
0
(2V/div)
0
VIN
(AC coupled) 0
(20mV/div)
Time (1µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
5
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Typical Characteristics
VIN = 3.6V, CIN = COUT = C1 = C2 = 1μF; TA = 25°C, unless otherwise noted.
EN/SET Input Latch Timeout vs. Input Voltage
EN/SET Input Off Timeout vs. Input Voltage
490
180
440
390
140
TEN/SET(OFF) (µs)
TEN/SET(LAT) (µs)
160
120
100
80
-40°C
25°C
85°C
60
40
2.7
3.1
3.5
3.9
4.3
4.7
5.1
290
240
190
40
2.7
1.10
1.00
1.00
VENL (V)
VENH (V)
1.10
0.90
0.80
-40°C
25°C
85°C
0.70
0.60
3.9
4.3
4.7
5.1
Input Voltage(V)
4.7
5.1
5.5
0.80
-40°C
25°C
85°C
0.70
0.60
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Turn-On to 1.5x Mode Backlight
(VIN = 3.6V; 30mA/ch)
(VIN = 3.3V; 30mA/ch)
EN
(2V/div) 0
EN
(4V/div)
VOUT
(2V/div) 0
VOUT
(4V/div)
VBL
0
(2V/div)
VBL
(4V/div)
0
IIN
(200mA/div) 0
IIN
(400mA/div)
0
6
4.3
0.90
Turn-On to 1x Mode Backlight
Time (100µs/div)
3.9
EN Input Low Threshold Voltage
vs. Input Voltage
1.20
3.5
3.5
Input Voltage (V)
1.20
3.1
3.1
EN Input High Threshold Voltage
vs. Input Voltage
2.7
-40°C
25°C
85°C
140
90
5.5
Input Voltage (V)
340
0
0
Time (40µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Typical Characteristics
VIN = 3.6V, CIN = COUT = C1 = C2 = 1μF; TA = 25°C, unless otherwise noted.
Turn-Off from 1.5x Mode Backlight
(VIN = 3.3V; 30mA/ch)
EN
(2V/div)
VOUT
(4V/div)
0
0
VBL
(4V/div) 0
IIN
(200mA/div) 0
Time (20ms/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
7
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Functional Block Diagram
IN
C1+
C1C2+
Dual-mode
Charge Pump
1x/1.5x
OUT
C24
EN/SET
32-step S2Cwire
Backlight Control
D1
D2
Control
Logic
D3
D4
GND
Functional Description
Application Information
The AAT3351 is a high efficiency charge pump white
LEDs driver for portable applications which can drive 4
channels at up to 30mA each.
Current Level Settings
The current sink magnitude is controlled by the EN/SET
serial data S2Cwire interface. The interface records rising
edges of the EN/SET pin and decodes them into 32 individual current level settings.
LED Drivers
The AAT3351 is a fractional charge pump and can multiply the input voltage by 1 or 1.5 times. The charge pump
switches at a fixed frequency of 1MHz. The internalmode-selection-circuit automatically switches the mode
between 1x and 1.5x mode based on the input voltage,
LED forward voltage, and load current. This mode switching maximizes the efficiency throughout the entire load
range. When the input voltage is high enough, the
AAT3351 operates in 1x mode to provide maximum efficiency. If the input voltage drops too low to supply programmed LED current when the battery discharges and
the voltage decays, 1.5x mode is automatically enabled.
When the battery is connected to a charger and the input
voltage increases sufficiently, the device will switch back
to 1x mode.
LED current level is set via Skyworks' Simple Serial
Control (S2Cwire) interface in a linear scale. The LED
current decreases linearly with each increasing code in
steps of approximately 1mA as shown in Table 1 and
Figure 1.
S2Cwire
Data
LED Current
(mA)
S2Cwire
Data
LED Current
(mA)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
30
29
28
27.1
26.1
25.2
24.2
23.2
22.3
21.3
20.3
19.4
18.4
17.4
16.5
15.5
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
14.5
13.5
12.6
11.6
10.6
9.7
8.7
7.7
6.8
5.8
4.8
3.9
2.9
1.9
1
0.5
Table 1: S2Cwire Data vs. LED Current.
8
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
35
LED Current (mA)
30
25
20
15
10
5
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
S2Cwire Data
Figure 1: S2Cwire Data vs. LED Current.
EN/SET Serial Interface
edge of EN/SET enables the charge pump, which reaches full capacity after the soft-start time tSS. and initially
sets the output LED current to full scale. Once EN/SET
has been held in the logic high state for time tLAT, the
programmed current is seen at the current sink outputs.
The LED current magnitude is controlled by the EN/SET
pin using the S2Cwire interface. The interface records
rising edges of the EN/SET pin and decodes them into 32
individual current level settings. Code 1 is full scale, and
Code 32 is the lowest setting equal to 500µA. The interface resets back to state 1 after the 32nd clock. The EN/
SET counter can be clocked at speeds up to 1MHz, so
intermediate states are not visible, but is designed to
accommodate a wide range of data rates. The first rising
When EN/SET is held low for an amount of time greater
than tOFF, the AAT3351 enters into shutdown mode and
draws less than 1µA from IN. The internal data register
is reset to 0 during shutdown. The EN/SET timing diagram is shown on Figure 2.
THI
TLO
TOFF
TLAT
EN/SET
1
Data Reg
2
n-1
n <= 32
0
n
0
Figure 2: EN/SET Timing Diagram.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
9
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
LED Selection
and total energy usage...not just % efficiency.
The AAT3351 is designed to drive white LEDs with forward voltages from 2V to 4.8V. Since D1 through D4
output current sinks are matched with negligible voltage
dependence; the LED constant current and brightness
will be matched regardless of their forward voltage (VF)
levels.
The AAT3351 efficiency may be quantified under specific
conditions and is dependent upon the input voltage and
voltage on D1 through D4 for a given constant current
setting.
Test Current/Channel Disable
Each current sink channel is equipped with a test current
function. While it is enabled, the AAT3351 automatically
detects the presence of LEDs all the time. Unused channels that are tied to OUT or LED loads that are failed will
be automatically disabled.
Device Switching Noise Performance
The AAT3351 operates at a fixed frequency of 1MHz to
control noise and limit harmonics that can interfere with
the RF operation of cellular telephone handsets or other
communication devices. Noise injected back to 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 AAT3351 softstart feature prevents noise transient effects associated
with inrush currents during startup of the charge pump
circuit.
Depending on the combination of VIN and voltages
sensed at the current sinks D1-D4, the device will operate in 1X mode. When any one of the voltages sensed at
the current sinks D1-D4 drops below the charge pump
mode transient threshold, the device will operate in 1.5X
charge pump mode. Each of these modes will yield different efficiency values. Refer to the following two sections for efficiency calculation of each mode.
1x Mode Efficiency
The AAT3351's 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.
An expression for the ideal efficiency (η) in 1x charge
pump mode can be expressed as:
η=
-or-
VF
η (%) = 100 · V
IN
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 AAT3351, it is very difficult to measure efficiency in terms of a percent value comparing input power
over output power. Since the AAT3351 outputs are pure
constant current sinks 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 components count, reliability, operating range,
10
POUT VF · IOUT
V
=
≈ F
PIN
VIN · IOUT VIN
1.5x Charge Pump Mode Efficiency
The AAT3351 contains a fractional charge pump which
will boost the input supply voltage when 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
one half times the input voltage. Efficiency (η) for an
ideal 1.5x charge pump can be calculated by the following equation:
η=
POUT VF · IOUT
=
PIN
VIN · IOUT
=
VF · IOUT
VF
≈
VIN · 1.5 · IOUT 1.5 · VIN
-or-
VF
η (%) = 100 · 1.5 ·V
IN
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Capacitor Selection
Ceramic Capacitor Materials
Careful selection of the four external capacitors CIN, C1,
C2, and COUT is important because they will affect turn-on
time, output ripple, and transient load performance.
Optimum performance will be obtained when low equivalent series resistance (ESR) ceramic capacitors are
used. In general, low ESR may be defined as less than
100mΩ. A value of 1μF for all four capacitors is a good
starting point when choosing capacitors. If the LED current sinks are only programmed for low current levels,
then the capacitor size may be decreased.
Ceramic capacitors less than 0.1μF are typically made
from NPO or C0G materials. NPO and C0G materials
have tight tolerance and are stable over temperature.
Capacitors with large values are typically composed of
X7R, X5R, Z5U, or Y5V dielectric materials.
Large ceramic capacitors, greater than 2.2μF, are often
available in low-cost Y5V and Z5U dielectrics, but capacitors greater than 1μF are usually not required for
AAT3351 applications.
Capacitor area is another contributor to ESR. Capacitors
that are physically larger will have lower ESR when compared to equivalent material but smaller capacitors.
These larger devices can improve circuit transient
response when compared to an equal value capacitor in
a smaller size.
Capacitor Characteristics
Ceramic composition capacitors are highly recommended over all other types of capacitors for use with the
AAT3351. Ceramic capacitors offer many advantages
over their tantalum and aluminum electrolytic counterparts. A ceramic capacitor has very low ESR, is lowest
cost, has a smaller PCB footprint, and is non-polarized.
Low ESR ceramic capacitors help to maximize charge
pump transient response. Since ceramic capacitors are
non-polarized, they are not prone to incorrect connection damage.
Evaluation Board Layout
When designing a PCB for the AAT3351, the key requirements are:
1. Place two flying capacitors C1 and C2 as close to the
chip as possible; otherwise 1.5x mode performance
will be compromised.
2. Place input and output decoupling caps as close to
the chip as possible to reduce switching noise and
output ripple.
Equivalent Series Resistance
ESR is an important characteristic to consider when
selecting a capacitor. ESR is a resistance internal to a
capacitor that is caused by the leads, internal connections, size or area, material composition, and ambient
temperature. Capacitor ESR is typically measured in milliohms for ceramic capacitors and can range to more
than several ohms for tantalum or aluminum electrolytic
capacitors.
Manufacturer
Murata
AVX
TDK
Taiyo Yuden
Part Number
Value (μF)
Voltage (V)
Temperature
Coefficient
Case
GRM219R71C104KA01
GRM188R61A105KA61
GRM219R61A475KE19
0603ZD105K
C1608X5R1E105K
C1608X5R1A475K
LMK107BJ475KA
0.1
1
4.7
1
1
4.7
4.7
10
10
10
10
25
10
10
X7R
X5R
X5R
X5R
X5R
X5R
X5R
0805
0603
0805
0603
0603
0603
0603
Table 2: Surface Mount Capacitors.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
11
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Evaluation Board Schematic
R12 0
J1
EN/SET
C1-
DC+
1
DC-
2
C1
1µF
1
2
C1+
3
4
5
3
C8
10µF
6
U1
COUT
1µF
D3
D2
D1
GND
VIN
C2-
12
11
10
9
R9 0
8
7
R10 0
D1
R11 0
D2
EXP PAD
0
JP1
AAT3351IWP-T1
D4
EN/SET
C1+
C1OUT
C2+
C2+
CIN
1µF
C2C2
1µF
JP5
C6
4.7µF
S2C
R5 R4 R3
1K 1K 1K
S1
UP
S2
DOWN
S3
CYCLE
R2
20K
1
2
S1
S2
S3
3
4
U2
PIC12F675
VDD
GP5
GP4
GP3
VSS
GP0
GP1
GP2
C4
0.1µF
8
7
6
VR1
POT10K
5
R7
330
LED2
Red
R6
330
GND
LED1
Green
Figure 3: AAT3351IWP Evaluation Board Schematic.
12
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
D3
D4
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
0
C1
1µF
J1
DC+
DC-
COUT
1µF
2
12
8
7
9
11
13
U1
AAT3351ITO-T1
D4
EN/SET
C1C1+
OUT
C2N/C
D3
D2
D1
GND
IN
C2+
N/C
R12
1
3
4
5
6
10
14
0
R9
0
R10
D1
0
R11
D2
D3
D4
V _MCU
CIN
1µF
C2 1µF
EN
AAT 3351
White LED
Driver
R2
20k
R5 R4
1k 1k
UP
S1
DOWN
S2
CYCLE
S3
R3
1k
1
2
3
4
U2
VDD
GP5
GP4
GP3
PIC12F675
VSS
GP0
GP1
GP2
C4
R7
0.1µF 330
8
7
6
5
LED2
Red
S2Cwire
Microcontroller
R6
330
LED1
Green
Figure 4: AAT3351ITO Evaluation Board Schematic.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
13
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Evaluation Board Layout
Figure 5: AAT3351IWP Evaluation Board
Top Side Layout.
14
Figure 6: AAT3351IWP Evaluation Board
Bottom Side Layout.
Figure 7: AAT3351ITO Evaluation Board
Top Side Layout.
Figure 8: AAT3351ITO Evaluation Board
Bottom Side Layout.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
AAT3351 Evaluation Board Bill of Materials
Component
Part Number
U1
AAT3351IWP-T1/AAT3351ITO-T1
U2
CIN, COUT, C1, C2
C4
C6
C8
D1-D4
LED1
LED2
R2
R3-R5
R6-R7
R8
R9-R12
S1, S2, S3
VR1
PIC12F675
GRM188R61A105KA61
GRM219R71C104KA01
GRM219R61A475KE19
DNP
LW M673
21UGC/TR8 Green LED; 0805
21SRC/TR8 Red LED; 0805
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
Chip Resistor
PTS645TL50
EVN-5ESX50B14
Description
High Efficiency 1X/1.5X Charge Pump for
White LED; TDFN33-12/TSOPJW-14 Package
8-Bit CMOS, FLASH-Based μC; 8-Pin MCU
1μF, 10V, X5R, 10%, 0603
0.1μF, 10V, X7R, 10%, 0805
4.7μF, 10V, X5R, 10%, 0805
Do Not Place
Mini TOPLED White LED
LED0 CMD15
LED7 CMD15
20K, 1/16W, 1%, 0603
1K, 1/16W, 1%, 0603
330, 1/16W, 1%, 0603
1M, 1/16W, 1%, 0603
0, 1/16W, 1%, 0603
Switch Tact, SPST, 5mm
10K POT; 3mm Squared SMD
Manufacturer
Skyworks
Microchip
Murata
Murata
Murata
Osram
Chicago Miniature Lamp
Chicago Miniature Lamp
Vishay
Vishay
Vishay
Vishay
Vishay
ITT Industries
Panasonic-ECG
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
15
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
Ordering Information
Package
Marking1
Part Number(Tape & Reel)2
TSOPJW-14
TDFN33-12
8UXYY
5YXYY
AAT3351ITO-T1
AAT3351IWP-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.
Package Information3
TSOPJW-14
2.85 ± 0.20
2.40 ± 0.10
0.20 +- 0.10
0.05
0.40 BSC
Top View
0.04 REF
0.05 +- 0.05
0.04
Side View
0.15 ± 0.05
+ 0.05
1.05 - 0.00
+ 0.000
1.00 - 0.075
3.05 +- 0.05
0.10
4° ± 4°
0.45 ± 0.15
2.75 ± 0.25
End View
All dimensions in millimeters.
1. XYY = assembly and date code.
2. Sample stock is generally held on part numbers listed in BOLD.
3.The leadless package family, which includes QFN, TQFN, DFN, TDFN and STDFN, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing
process. A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection.
16
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
DATA SHEET
AAT3351
High Efficiency 1x/1.5x Charge Pump
TDFN33-12
Index Area
0.43 ± 0.05
0.1 REF
C0.3
0.45 ± 0.05
2.40 ± 0.05
3.00 ± 0.05
Detail "A"
3.00 ± 0.05
1.70 ± 0.05
Top View
Bottom View
0.23 ± 0.05
Pin 1 Indicator
(optional)
0.05 ± 0.05
0.23 ± 0.05
0.75 ± 0.05
Detail "A"
Side View
All dimensions in millimeters.
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 • [email protected] • www.skyworksinc.com
202166A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 12, 2012
17