AAT4297ITP-T1 ANALOGICTECH [Advanced Analogic Technologies], AAT4297ITP-T1 Datasheet

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AAT4297ITP-T1

Manufacturer Part Number
AAT4297ITP-T1
Description
Single/Dual RGB Controller
Manufacturer
ANALOGICTECH [Advanced Analogic Technologies]
Datasheet
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
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.
Typical Application
4295.2006.03.1.3
EN/SET
EN/SET
AAT4295/97
VCC
GND
V
CC
2
Cwire™)
*S4
*S5
*S6
S1
S2
S3
RB1
D1
RB2
D2
Features
Applications
RB3
D3
Input Voltage Range: 1.8V to 5.5V
Independent Low-Side N-Channel MOSFET
Switches:
— AAT4295: Three Channels
— AAT4297: Six Channels
User-Programmable S
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
Cell Phones
Multiple Low Power Switching
Personal Communication Devices
Portable Electronic Devices
RB4
Single/Dual RGB Controller
*D4
RB5
*D5
* AAT4297 Only
RB6
*D6
SmartSwitch
2
Cwire Interface
AAT4295/97
1

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AAT4297ITP-T1 Summary of contents

Page 1

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 ...

Page 2

Pin Descriptions Pin Number Symbol AAT4295 AAT4297 1 8 VCC 10 EN/SET 5 1 GND ...

Page 3

Absolute Maximum Ratings Symbol Description V to GND Power Supply to GND CC INx to GND All Input (Drain) to GND EN/SET EN/SET to GND T Operating Junction Temperature Range J Thermal Information 2 Symbol Description θ Thermal Resistance JA ...

Page 4

Electrical Characteristics V = 5.0V -40°C to +85°C, unless otherwise noted. Typical values are Symbol Description V Supply Voltage Range CC I Quiescent Current Q I Off Supply Current Q(OFF) Off Switch Current for Any ...

Page 5

Typical Characteristics Quiescent Current vs. Input Voltage 3.5 3.0 85°C 2.5 2.0 1.5 25°C 1.0 0.5 0.0 1.5 2 2.5 3 3.5 Input Voltage (V) Off-Supply Current vs. Temperature 0.006 0.005 0.004 3.3V 0.003 ...

Page 6

Typical Characteristics EN/SET Timeout vs. Input Voltage 250 T 225 OFF 200 175 150 125 100 75 50 1.5 2 2.5 3 3.5 Input Voltage (V) EN/SET Off Timeout vs. Input Voltage 300 -40°C 250 200 150 100 50 1.5 ...

Page 7

Typical Characteristics Transition of Outputs ( 20mA) OUT1 OUT2 EN/SET (5V/div) V OUT1 (5V/div) V OUT2 (5V/div) I OUT1 (20mA/div) Time (50µs/div) Turn-Off Transient Characteristic ( 20mA) OUT1 OUT2 EN/SET (5V/div) V OUT1 (20mV/div, ...

Page 8

Functional Block Diagram EN/SET VCC Functional Description The AAT4295/97 is comprised of three or six low- side N-channel MOSFET load switches primarily targeted for general purpose applications where several load circuits need to be connected to a com- mon ground ...

Page 9

Control Figure 1: Switch Input Circuit. The state of each switch is controlled via the EN/SET pin using AnalogicTech's S face. To enable a respective switch, a series of clocked pulses should be applied to the EN/SET pin. The number ...

Page 10

AAT4297 Clock OUT6 OUT5 OUT4 OUT3 OUT2 OUT1 ...

Page 11

Sn T EN/SET 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-posi- tion low-side switch. For some applications, ...

Page 12

T = 85°C. Typical conditions are cal- A culated under normal ambient conditions, where T = 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 ...

Page 13

Li-Ion 10µF Battery 2.8V - 4.2V CP ON/OFF EN/SET DATA Figure 4: Single RGB LED Fashion Light Solution Using an AAT4295. VIN VOUT AAT3110 Li-Ion 10µF Battery 2. SHDN C- ON/OFF GND EN/SET DATA Figure 5: ...

Page 14

VOUT1 VIN VOUT2 VIN AAT3112 Li-Ion 10µF Battery 2.8V - 4.2V RGB/Light EN1 Enable Flash Enable EN2 GND EN/SET DATA Figure 6: RGB LED Fashion Light With a Dual Mode Light/Strobe Flash Input Voltage Supply VCC AAT4297 ...

Page 15

... 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 Single/Dual RGB Controller Marking 1 Part Number (Tape and Reel) RBXYY AAT4295IJS-T1 RCXYY AAT4297ITP-T1 SC70JW-8 0.225 ± 0.075 0.100 0.45 ± 0.10 2.10 ± 0.30 AAT4295/97 2 0.048REF 4° ± 4° 15 ...

Page 16

BSC 0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC 3.00 ± 0.10 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. ...

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