ANALOGICTECH AAT4297ITP-T1

AAT4295/97
Single/Dual RGB Controller
General Description
Features
The AAT4295/97 SmartSwitch is a member of
AnalogicTech's Application Specific Power MOSFET™ (ASPM™) product family. The AAT4295/97
is comprised of three/six low-side N-channel MOSFET switches that gate an applied load to ground.
This device is intended for controlling RGB fashion
lighting in portable products; it can also be used for
a combination of general purposes where a load
requires a low-side switch connection to ground.
The AAT4295/97 simplifies design and layout limitations by eliminating the need for multiple GPIO
control lines and discrete MOSFETs to control
product features.
•
•
•
•
•
•
•
•
The state of each output channel is controlled with a
single GPIO line via the EN/SET pin using
AnalogicTech's Simple Serial Control™ (S2Cwire™)
interface. After a short set of data pulses is sent to
the EN/SET input and the line is pulled to logic high,
the device is enabled with the desired switch configuration. In the enabled state, the AAT4295/97 typically consumes less than 3µA of quiescent current.
When EN/SET is pulled to a logic low, the device is
disabled and each output switch is placed in a high
impedance open state.
SmartSwitch™
Input Voltage Range: 1.8V to 5.5V
Independent Low-Side N-Channel MOSFET
Switches:
— AAT4295: Three Channels
— AAT4297: Six Channels
User-Programmable S2Cwire Interface
Single GPIO Controls State of Each MOSFET
Low Quiescent Current: 3µA Typical
Temperature Range: -40°C to +85°C
No External Components Required
Available in Pb-Free Packages
— AAT4295 in 8-Pin SC70JW
— AAT4297 in 12-Pin TSOPJW
Applications
•
•
•
•
Cell Phones
Multiple Low Power Switching
Personal Communication Devices
Portable Electronic Devices
The AAT4295 and AAT4297 operate over an input
voltage range of 1.8V to 5.5V, making them ideal for
battery-powered applications. The three-switch
AAT4295 is offered in a Pb-free, 8-pin SC70JW
package, while the six-switch AAT4297 is offered in a
Pb-free, 12-pin TSOPJW package. Both devices are
rated over the -40°C to +85°C temperature range.
Typical Application
VCC
VCC
AAT4295/97
S1
D1
D2
D3
*D4
*D5
*D6
RB1
RB2
RB3
RB4
RB5
RB6
S2
S3
EN/SET
EN/SET
*S4
*S5
GND
*S6
* AAT4297 Only
4295.2006.03.1.3
1
AAT4295/97
Single/Dual RGB Controller
Pin Descriptions
Pin Number
AAT4295
AAT4297
Symbol
Function
1
8
VCC
Input supply voltage.
2, 3
9, 10, 12
N/C
No connection.
4
11
EN/SET
5
1
GND
6
2
S1
Drain of the N-channel MOSFET for Channel 1.
7
3
S2
Drain of the N-channel MOSFET for Channel 2.
8
6
S3
Drain of the N-channel MOSFET for Channel 3.
N/A
4
S5
Drain of the N-channel MOSFET for Channel 5.
N/A
5
S4
Drain of the N-channel MOSFET for Channel 4.
N/A
7
S6
Drain of the N-channel MOSFET for Channel 6.
Input control pin using S2Cwire serial interface. The device records
rising edges of the clock and decodes them into eight states, which
control the ON/OFF states of the MOSFETs. See Table 1 for output
settings. In addition, a logic low forces the device into shutdown
mode, reducing the supply current to less than 1µA. This pin should
not be left floating.
Ground connection.
Pin Configuration
AAT4295
SC70JW-8
(Top View)
VCC
N/C
N/C
EN/SET
2
1
8
2
7
3
6
4
5
AAT4297
TSOPJW-12
(Top View)
S3
S2
S1
GND
GND
S1
S2
S5
S4
S3
1
12
2
11
3
10
4
9
5
8
6
7
N/C
EN/SET
N/C
N/C
VCC
S6
4295.2006.03.1.3
AAT4295/97
Single/Dual RGB Controller
Absolute Maximum Ratings1
Symbol
VCC to GND
INx to GND
EN/SET
TJ
Description
Power Supply to GND
All Input (Drain) to GND
EN/SET to GND
Operating Junction Temperature Range
Value
Units
6.0
-0.3 to 6.0
-0.3 to 6.0
-40 to 150
V
V
V
°C
Value
Units
Thermal Information2
Symbol
Description
θJA
Thermal Resistance
PD
Maximum Power Dissipation
SC70JW
TSOPJW
SC70JW
TSOPJW
225
160
4403
6254
°C/W
mW
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 board.
3. Derated 4.4mW/°C above 25°C.
4. Derated 6.25mW/°C above 25°C.
4295.2006.03.1.3
3
AAT4295/97
Single/Dual RGB Controller
Electrical Characteristics1
VCC = 5.0V; TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
VCC
IQ
IQ(OFF)
Description
Supply Voltage Range
Quiescent Current
IDS(OFF)
Off Supply Current
Off Switch Current for Any
Switch
RDS(ON)
On-Resistance
TCRDS
TON
EN/SET
VEN(L)
VEN(H)
TEN/SET LO
TEN/SET_HI_MIN
TEN/SET_HI_MAX
TOFF
TLAT
IEN/SET
Conditions
On-Resistance Temperature
Coefficient
Output Turn-On Time2
Min
Typ
1.8
VCC = 5V, EN/SET = VCC, IOUT =
No Load, All Switches On
EN/SET = 0, VCC = 5V, VOUT Open
3.0
Max
Units
5.5
V
10
µA
1.0
µA
EN/SET = 0, VCC = 5V, VOUT = 0
0.1
1.0
µA
VCC = 5V
VCC = 3.6V
1.9
2.1
6.0
7.0
Ω
2800
VIN = 5V, RPULLUP = 250Ω, COUT = 0.1µF
Enable Threshold Low
VIN = 1.8V
Enable Threshold High
VIN = 5.5V
EN/SET Low Time
Minimum EN/SET High Time
Maximum EN/SET High Time
EN/SET Off Timeout
EN/SET Latch Timeout
EN/SET Input Leakage
0.6
1.4
0.5
ppm/°C
2.7
µs
0.3
V
V
µs
ns
µs
µs
µs
µA
75
50
-1
75
500
500
1
1. The AAT4295 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
2. TON is the time after latch timeout to 10% of the output voltage. See Figure 1, Timing Diagram.
4
4295.2006.03.1.3
AAT4295/97
Single/Dual RGB Controller
Typical Characteristics
Quiescent Current vs. Input Voltage
Quiescent Current vs. Temperature
3.0
3.0
Quiescent Current (µA)
Quiescent Current (µ
µA)
3.5
85°C
2.5
2.0
1.5
-40°C
25°C
1.0
0.5
0.0
1.5
2
2.5
3
3.5
4
4.5
5
2.0
1.5
1.0
-40
5.5
VIN = 5V
2.5
VIN = 3.6V
-20
0
20
40
60
Input Voltage (V)
Temperature (°°C)
Off-Supply Current vs. Temperature
RDS(ON) vs. Input Voltage
80
100
(ILOAD = 20mA)
3.5
VIN = 5V
0.005
0.004
3.0
VIN = 4.2V
RDS(ON) (Ω
Ω)
Quiescent Current (µA)
0.006
VIN = 3.3V
0.003
0.002
0.001
0
20
40
60
80
100
RDS1
RDS5
2.0
RDS2
2.5
3.0
3.5
4.0
4.5
Input Voltage (V)
RDS(ON) vs. Temperature
RDS(ON) vs. Temperature
(VIN = 3.6V; ILOAD = 20mA)
(VIN = 5V; ILOAD = 20mA)
5.0
5.5
3.0
2.5
RDS4
RDS3
RDS6
RDS(ON) (Ω)
RDS(ON) (Ω)
RDS6
Temperature (°°C)
3.0
2.0
1.5
1.0
RDS4
2.0
1.0
1.5
0.000
-20
2.5
1.5
VIN = 1.8V
-40
RDS3
RDS5
-40
-20
0
RDS2
RDS1
20
40
RDS6
2.0
1.5
60
80
100
RDS4
RDS3
RDS2
RDS5
Temperature (°°C)
4295.2006.03.1.3
2.5
1.0
-40
-20
0
20
RDS1
40
60
80
100
Temperature (°°C)
5
AAT4295/97
Single/Dual RGB Controller
Typical Characteristics
EN/SET Latch Timeout vs. Input Voltage
EN/SET Timeout vs. Input Voltage
300
250
Latch Timeout, TLAT (µs)
TOFF
225
Timeout (µs)
200
175
TLATCH
150
125
100
75
50
1.5
2
2.5
3
3.5
4
4.5
5
5.5
-40°C
250
200
150
85°C
25°C
100
50
1.5
Input Voltage (V)
2
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Turn-On Characteristic
EN/SET Off Timeout vs. Input Voltage
(IOUT1 = IOUT2 = 20mA)
Off Timeout, TOFF (µs)
300
-40°C
250
EN/SET
(5V/div)
200
150
VOUT1
(5V/div)
VOUT2
(5V/div)
85°C
25°C
100
IOUT1
(20mA/div)
50
1.5
2
2.5
3
3.5
4
5
5.5
Input Voltage (V)
Time (50µs/div)
Turn-On Characteristic
Turn-Off Characteristic
(IOUT1 = IOUT2 = 20mA)
(IOUT1 = IOUT2 = 20mA)
EN/SET
(5V/div)
EN/SET
(5V/div)
VOUT1
(5V/div)
VOUT1
(5V/div)
VOUT2
(5V/div)
VOUT2
(5V/div)
IOUT1
(20mA/div)
IOUT1
(20mA/div)
Time (50µs/div)
6
4.5
Time (50µs/div)
4295.2006.03.1.3
AAT4295/97
Single/Dual RGB Controller
Typical Characteristics
Transition of Outputs
Turn-On Transient Characteristic
(IOUT1 = IOUT2 = 20mA)
(IOUT1 = IOUT2 = 20mA)
EN/SET
(5V/div)
EN/SET
(5V/div)
VOUT1
(20mV/div,
AC coupled)
VOUT1
(5V/div)
VOUT2
(5V/div)
VOUT2
(5V/div)
IOUT1
(20mA/div)
IOUT1
(20mA/div)
Time (50µs/div)
Time (50µs/div)
Turn-Off Transient Characteristic
Turn-On Fall Time vs. Temperature
(IOUT1 = IOUT2 = 20mA)
1.0
0.8
VOUT1
(20mV/div,
AC coupled)
0.6
Time (µs)
EN/SET
(5V/div)
VOUT2
(5V/div)
IOUT1
(20mA/div)
TON (Fall Time)
0.4
0.2
0.0
-40
-20
0
Time (50µs/div)
40
60
80
100
Temperature (°°C)
VIH vs. Input Voltage
VIL vs. Input Voltage
1.1
1.0
1.0
0.9
-40°C
-40°C
0.8
VIL (V)
0.9
VIH (V)
20
0.8
0.7
85°C
25°C
0.7
0.6
85°C
25°C
0.5
0.6
0.4
0.5
0.3
1.5
2.0
2.5
3.0
3.5
4.0
Input Voltage (V)
4295.2006.03.1.3
4.5
5.0
5.5
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage (V)
7
AAT4295/97
Single/Dual RGB Controller
Functional Block Diagram
EN/SET
S2 Cwire Interface
VCC
Control Logic
S1
S2
S3
S4*
S5*
S6*
GND
* AAT4297 only
Functional Description
The AAT4295/97 is comprised of three or six lowside N-channel MOSFET load switches primarily
targeted for general purpose applications where
several load circuits need to be connected to a common ground and controlled from a single microcontroller GPIO output. When a given switch is
enabled, the respective switch connects the load
input (S1 to S3 for the AAT4295 and S1 to S6 for the
AAT4297) to ground through the N-channel MOSFET. Each low-side N-channel MOSFET transistor
has a typical on resistance (RDS(ON)) of 2Ω when
operating from a 3.6V supply. Both the AAT4295
8
and AAT4297 have been designed to operate with
an input voltage range of 1.8V to 5.5V, making them
ideal for battery-powered applications.
These devices may be used for load switching
applications such as RGB LED fashion lighting,
display or keypad backlight LEDs, miscellaneous
indicator LED lamps, as well as audio and RF circuits or any other system with a power requirement
that does not exceed the thermal dissipation limits
of the load switch and device package.
Each switch input may be represented by the following circuit (Figure 1) and simplified equivalent
model (Figure 2).
4295.2006.03.1.3
AAT4295/97
Single/Dual RGB Controller
Control
S1 to S6
Control
2Ω
S1 to S6
Figure 1: Switch Input Circuit.
The state of each switch is controlled via the
EN/SET pin using AnalogicTech's S2Cwire interface. To enable a respective switch, a series of
clocked pulses should be applied to the EN/SET
pin. The number of pulses clocked will determine
the switch configuration based on the truth table
given in Table 1. At the end of the serial pulse data
set, the EN/SET set pin should be held high to latch
the clocked data and enable the desired switch
configuration. When the device is enabled with the
EN/SET held to a logic high state, the quiescent
current consumption will typically increase to 3µA
at normal ambient room temperatures. If output
sequencing of the switches is not necessary, all of
the switches may be turned on simultaneously on
the first rising edge of the EN/SET pin by simply
pulling the EN/SET to a logic high level. The
default configuration for one clock pulse is to
enable all switches to the "on" state. However, if
output sequencing is desired, a series of pulses on
the EN/SET pin will set the outputs to the desired
state (refer to Table 2 for output settings). For LED
lighting applications, the EN/SET line may be
clocked at rates up to 1MHz, allowing the user to
not only control brightness, but (in the case of color
RGB LEDs) color as well.
4295.2006.03.1.3
Figure 2: Simplified Equivalent Model.
Output Settings
The ON/OFF state of the MOSFET switches is
controlled by the EN/SET serial data input. An
internal control counter is clocked on the rising
edge of the EN/SET pin, and is decoded into the 8
possible states of the MOSFET for the AAT4295
(see Table 1) and 64 possible states for the
AAT4297 (see Table 2). The counter rolls over
after 8 clocks and the table repeats.
Clock
OUT3
OUT2
OUT1
1
2
3
4
5
6
7
8
on
on
on
on
off
off
off
off
on
on
off
off
on
on
off
off
on
off
on
off
on
off
on
off
Table 1: AAT4295 EN/SET Settings.
9
AAT4295/97
Single/Dual RGB Controller
AAT4297
AAT4297
AAT4295 (only)
Clock OUT6 OUT5 OUT4 OUT3 OUT2 OUT1
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
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
on
on
on
on
on
on
on
on
off
off
off
off
off
off
off
off
on
on
on
on
on
on
on
on
off
off
off
off
off
off
off
off
on
on
on
on
off
off
off
off
on
on
on
on
off
off
off
off
on
on
on
on
off
off
off
off
on
on
on
on
off
off
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
Clock
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
OUT6 OUT5 OUT4 OUT3 OUT2 OUT1
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
on
on
on
on
on
on
on
on
off
off
off
off
off
off
off
off
on
on
on
on
on
on
on
on
off
off
off
off
off
off
off
off
on
on
on
on
off
off
off
off
on
on
on
on
off
off
off
off
on
on
on
on
off
off
off
off
on
on
on
on
off
off
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
Table 2: Output Settings.
The S2Cwire interface relies on the number of rising edges of the EN/SET pin to load the internal
register to a desired count. S2Cwire control latches
data after the EN/SET pin has been held high for
the preset latch enable time (TLAT). The interface
records rising edges of the EN/SET pin and
decodes them into one of 8 states for the AAT4295
or to one of 64 states for the AAT4297, as indicated in Tables 1 and 2. The counter can be clocked
at speeds up to 1MHz, so different switch combi10
nations may be clocked in lighting applications
without any visible perception to the user.
Alternatively, the EN/SET clock pulses may be
entered one at a time for the desired setting. The
first rising edge of EN/SET enables the IC and
turns all the switches ON. Once the final clock
cycle is received, the EN/SET pin is held high to
maintain the device setting. The device is disabled
500µs (TOFF) after the EN/SET pin transitions to a
logic low state (see Figure 3).
4295.2006.03.1.3
AAT4295/97
Single/Dual RGB Controller
Sn
TH
TL
TLAT
TON
TO
T OFF
EN/SET
Figure 3: EN/SET Timing Diagram.
Application Information
External Component Selection
The AAT4295 and AAT4297 have been designed
so that no external parts are required for the device
to function as a general purpose three- or six-position low-side switch. For some applications, the
addition of bypass capacitors or pull-up or pulldown resistors may be desired to improve overall
system performance.
For lighting applications, such as controlling RGB
LEDs, keypad or display backlight LEDs, or photo
flash LEDs, no bypass capacitors are necessary.
For other general purpose load switching applications which may use some or all of the outputs to
switch light load current levels to application circuits, good engineering practice would dictate the
use of small bypass capacitors placed on the VCC
input and each switch connection that is used to
conduct current from the load to ground. The use
of small ceramic capacitors between the input and
output nodes will aid in reducing line and load transient response effects when the load switch on a
given output is turned on or off.
Input Capacitor
Typically, a 0.1µF capacitor is recommended for
CIN in most applications to provide input line transient response immunity to small changes in the
input supply. A CIN capacitor is not required for
basic operation. If used, CIN should be located as
close to the device VIN pin as practically possible.
There is no specific capacitor equivalent series
resistance (ESR) requirement for CIN; however, for
higher current operation, ceramic capacitors are
recommended for CIN due to their inherent capability over tantalum or aluminum electrolytic capacitors to withstand input current surges from low
impedance sources, such as batteries in portable
devices.
4295.2006.03.1.3
Output Capacitor
For typical applications where the AAT4295/97 is
used for LED lighting control, no output capacitors
are required because the end load is not sensitive
to device turn-on or turn-off transient effects.
For improved load transient response in systems
using the AAT4295/97 for load switching, the addition of a small output capacitor placed between the
output pins and ground can have a beneficial
effect. A 0.1µF ceramic capacitor is suggested as
a reasonable value for an output capacitor.
The output capacitor has no specific capacitor type
or ESR requirement. If desired, COUT may be
increased to a value greater than 0.1µF without
limit to accommodate any load transient condition
without adversely affecting the device turn-on slew
rate time.
Thermal Considerations
The AAT4295 and AAT4297 are designed to sink a
continuous load current to ground when a respective switch is enabled via the S2Cwire control. The
limiting characteristic for maximum safe operating
load current through a given switch or set of switches is package power dissipation. In order to obtain
high operating currents, careful device layout and
circuit operating conditions must be taken into
account. At any given ambient temperature (TA),
the maximum package power dissipation can be
determined by the following equation:
PD(MAX) =
TJ(MAX) - TA
θJA
Constants for the AAT4295 are maximum junction
temperature, TJ(MAX) = 125°C, and package thermal
resistance, θJA = 225°C/W. Worst case conditions
are calculated at the maximum operating tempera11
AAT4295/97
Single/Dual RGB Controller
ture, where TA = 85°C. Typical conditions are calculated under normal ambient conditions, where TA
= 25°C. At 25°C ambient, the AAT4295 is capable
of dissipating 444.4mW of power and the AAT4297
is capable of dissipating 625mW of power. At 85°C
ambient, the AAT4295 is capable of dissipating
177.8mW of power and the AAT4297 can dissipate
250mW.
The power dissipation of any given MOSFET
switch is limited by its respective on resistance
(RDS). The RDS of any given MOSFET switch is
controlled by the applied gate voltage to the switch,
which is set by the applied VCC supply and the
ambient operating temperature. Switch RDS for
the AAT4295 or AAT4297 may be estimated by
using the RDS versus Temperature curve in the
Typical Characteristics section of this datasheet.
The maximum current of any given switch can be
calculated for a given operating temperature and
VCC supply level. The corresponding RDS is determined by use of the RDS vs. Temperature curve for
the given VCC.
Given the maximum package power dissipation
and operating temperature, the maximum current
through any switch or combination of switches can
be calculated using the following formula:
1
⎛ PD(MAX)⎞ 2
ISWITCH(MAX) = ⎝ R ⎠
DS
Example: If all the switches on an AAT4295 were
closed simultaneously, each switch could handle
up to 271mA of current at 25°C for total of 813mA.
For the same set of operating conditions at 25°C,
the AAT4297 can handle up to 208mA per switch
for a total of 1.25A for all six switches. If the load
current for a desired application exceeds the recommended current at a given temperature, two or
more switches may be operated in parallel as long
as the overall power dissipation of the device package is not exceeded. If different current levels are
passed through different switches on a given
device, then one should total up the power dissipation for each switch and assure the sum of the
power dissipation does not exceed the power rating for the package.
Application Circuits
Today, many mobile phones and similar products
contain RGB LED fashion lighting, LCD display and
sub-display, as well as keypad backlighting and
photo flash LEDs. Due to the nature of common
anode RGB LEDs, the AAT4295 and AAT4297
make ideal low-cost lighting control solutions. In
general, most types of LEDs can be controlled via a
low-side MOSFET switch and current limiting ballast resistor. The following application circuits
(Figures 4 through 7) show voltage boosting charge
pumps to power RGB and flash LEDs. However, if
a voltage or current source is already available in a
given product design, the charge pump circuit block
may be replaced with the existing power source
solution. Since both the AAT4295 and AAT4297
require only one GPIO line from the system microcontroller to enable and disable all the switches via
the EN/SET input, these solutions can provide a
simple way to add lighting solutions to existing
design platforms.
Driving LED Loads
When driving LEDs with a voltage source, series
ballast resistors must be used to limit the LED forward current. The LED current will vary with supply
voltage and LED forward voltage. Most types of
LEDs have forward voltage specifications ranging
from 2.0V to 5.0V. When controlling an LED of any
type with a low-side MOSFET switch, the necessary series ballast resistor value can be calculated
from the following formula:
RBALLAST =
(VIN - VF)
- RDS(ON)
ILED
Where:
RBALLAST is the value of resistor to be placed in
series with the LED (Ω).
VIN is the input supply voltage to the device (V).
VF is the forward voltage of the LED (V).
RDS(ON) is the resistance of the switch when it is
turned on (Ω).
ILED is the desired operating current of the LED (A).
12
4295.2006.03.1.3
AAT4295/97
Single/Dual RGB Controller
RGB LED
VIN
Li-Ion
Battery
2.8V - 4.2V
VOUT
AAT3110
10µF
VCC
10µF
R
RR
1µF
SHDN
GND
B
AAT4295
C+
CP ON/OFF
G
RG
RB
S1
C-
S2
S3
EN/SET DATA
EN/SET
GND
Figure 4: Single RGB LED Fashion Light Solution Using an AAT4295.
RGB LED
VIN
Li-Ion
Battery
2.8V - 4.2V
10µF
10µF
AAT3110
R1
VCC
VOUT
AAT4297
EN/SET
DATA
SHDN
GND
RG1
RB1
B1
R2
RR2
RG2
G2
B2
RB2
S1
C+
S2
1µF
CP
ON/OFF
RR1
G1
RGB LED
S3
C-
S4
EN/SET
S5
S6
GND
Figure 5: Dual RGB LED Fashion Light Solution Using an AAT4297.
4295.2006.03.1.3
13
AAT4295/97
Single/Dual RGB Controller
VOUT1
VOUT2
VIN
Li-Ion
Battery
2.8V - 4.2V
VCC
C1+
1µF
AAT3112
10µF
RGB LED
10µF
VIN
R1
AAT4297
C1-
EN2 GND
Flash
RB1
RLIGHT
S2
1µF
EN1
Flash Enable
R G1
B1
S1
C2+
RGB/Light
Enable
RR1
G1
Flash LED
R FLASH
S3
C2-
S4
EN/SET
DATA
S5
EN/SET
S6
GND
Figure 6: RGB LED Fashion Light With a Dual Mode Light/Strobe Flash
LED Solution Using an AAT4297.
Input
Voltage
Supply
RGB LED
VCC
R
AAT4297
RR
G
RG
B
RB
Main Display
Sub Display
Flash LED
D1
D2
D3
D4
D5
D6
Flash
RD1
RD2
RD3
R D4
RD5
RD6
RFLASH
S1
S2
S3
S4
EN/SET
DATA
EN/SET
S5
S6
GND
Figure 7: Total Lighting Control Solution Using an AAT4297. Includes RGB Fashion Light,
Main Display and Sub-Display LCD Backlight, and Photo Flash LED.
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AAT4295/97
Single/Dual RGB Controller
Ordering Information
Package
Marking1
Part Number (Tape and Reel)2
SC70JW-8
RBXYY
AAT4295IJS-T1
TSOPJW-12
RCXYY
AAT4297ITP-T1
All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means
semiconductor products that are in compliance with current RoHS standards, including
the requirement that lead not exceed 0.1% by weight in homogeneous materials. For more
information, please visit our website at http://www.analogictech.com/pbfree.
Package Information
SC70JW-8
2.20 ± 0.20
1.75 ± 0.10
0.50 BSC 0.50 BSC 0.50 BSC
0.225 ± 0.075
2.00 ± 0.20
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
0.048REF
2.10 ± 0.30
All dimensions in millimeters.
1. XYY = assembly and date code.
2. Sample stock is generally held on part numbers listed in BOLD.
4295.2006.03.1.3
15
AAT4295/97
Single/Dual RGB Controller
TSOPJW-12
2.85 ± 0.20
2.40 ± 0.10
0.10
0.20 +- 0.05
0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC
7° NOM
0.04 REF
0.055 ± 0.045
0.15 ± 0.05
+ 0.10
1.00 - 0.065
0.9625 ± 0.0375
3.00 ± 0.10
4° ± 4°
0.45 ± 0.15
0.010
2.75 ± 0.25
All dimensions in millimeters.
© Advanced Analogic Technologies, Inc.
AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights,
or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice.
Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. AnalogicTech
warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with AnalogicTech’s standard warranty. Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed.
Advanced Analogic Technologies, Inc.
830 E. Arques Avenue, Sunnyvale, CA 94085
Phone (408) 737-4600
Fax (408) 737-4611
16
4295.2006.03.1.3