Document
AAT4295/97
Single/Dual RGB Controller General Description
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.
Features
• •
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
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™) Applications interface. After a short set of data pulses is sent to the EN/SET input and the line is pulled to logic high, • Cell Phones the device is enabled with the desired switch config• Multiple Low Power Switching uration. In the enabled state, the AAT4295/97 typi• Personal Communication Devices cally consumes less than 3µA of quiescent current. Portable Electronic Devices www.DataSheet4U.com • 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
VCC
VCC
AAT4295/97
S1 S2 S3
D1 RB1
D2 RB2
D3 RB3
*D4 RB4
*D5 RB5
*D6 RB6
EN/SET
EN/SET
*S4 *S5 GND *S6
* AAT4297 Only
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AAT4295/97
Single/Dual RGB Controller Pin Descriptions
Pin Number
AAT4295 AAT4297
Symbol
VCC N/C EN/SET
Function
Input supply voltage. No connection. 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. Drain of the N-channel MOSFET for Channel 1. Drain of the N-channel MOSFET for Channel 2. Drain of the N-channel MOSFET for Channel 3. Drain of the N-channel MOSFET for Channel 5. Drain of the N-channel MOSFET for Channel 4. Drain of the N-channel MOSFET for Channel 6.
1 2, 3 4
8 9, 10, 12 11
5 6 7 8 N/A N/A N/A
1 2 3 6 4 5 7
GND S1 S2 S3 S5 S4 S6
Pin Configuration
AAT4295 SC70JW-8 (Top View) GND S1 S2 S5 S4 S3 AAT4297 TSOPJW-12 (Top View) N/C EN/SET N/C N/C VCC S6
1 2 3 4 5 6
12 11 10 9 8 7
VCC N/C N/C EN/SET
1 2 3 4
8 7 6 5
S3 S2 S1 GND
2
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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
6.0 -0.3 to 6.0 -0.3 to 6.0 -40 to 150
Units
V V V °C
Thermal Information2
Symbol
θJA PD
Description
Thermal Resistance Maximum Power Dissipation SC70JW TSOPJW SC70JW TSOPJW
Value
225 160 4403 6254
Units
°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
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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) IDS(OFF) RDS(ON) TCRDS TON EN/SET VEN(L) VEN(H) TEN/SET LO TEN/SET_HI_MIN TEN/SET_HI_MAX TOFF TLAT IEN/SET
Description
Supply Voltage Range Quiescent Current Off Supply Current Off Switch Current for Any Switch On-Resistance On-Resistance Temperature Coefficient Output Turn-On Time2
Conditions
VCC = 5V, EN/SET = VCC, IOUT = No Load, All Switches On EN/SET = 0, VCC = 5V, VOUT Open EN/SET = 0, VCC = 5V, VOUT = 0 VCC = 5V VCC = 3.6V
Min
1.8
Typ
Max
5.5
Units
V µA µA µA Ω ppm/°C
3.0
10 1.0
0.1 1.9 2.1 2800
1.0 6.0 7.0
VIN = 5V, RPULLUP = 250Ω, COUT = 0.1µF
0.6
2.7 0.3
µs V V µs ns µs µs µs µA
Enable T.