SmartSwitch
™
General Description
The AAT4295/97 SmartSwitch is a member of
AnalogicTech's Application Specific Power MOS-
FET™ (ASPM™) product family. The AAT4295/97
is comprised of three/six low-side N-channel MOS-
FET 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 limi-
tations 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™ (S
2
Cwire™)
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 config-
uration. In the enabled state, the AAT4295/97 typi-
cally 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.
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.
Features
• Input Voltage Range: 1.8V to 5.5V
• Independent Low-Side N-Channel MOSFET
Switches:
— AAT4295: Three Channels
— AAT4297: Six Channels
• User-Programmable S
2
Cwire 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
AAT4295/97
Single/Dual RGB Controller
Typical Application
D1
RB1
D2
RB2
D3
RB3
*D4
RB4
*D5
RB5
*D6
RB6
EN/SET
S1
S2
S3
*S4
*S5
*S6
GND
EN/SET
V
CC
* AAT4297 Only
AAT4295/97
VCC
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