PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander General Description Features The AAT4292 SmartSwitchTM is a member of AnalogicTech’s Application Specific Power MOSFETTM (ASPMTM) product family. The AAT4292 has seven P-channel MOSFETs configured for use as a high side microprocessor GPIO expander powered from a common supply source. Operating over a 1.8V to 5.5V range, the AAT4292 is ideal for portable Li-Ion/Polymer powered products. The state of each output channel is controlled with a single GPIO line via the EN/SET pin using AnalogicTech’s Simple Serial Control™ (AS2Cwire™) interface. • • • • • VIN Range: 1.8V – 5.5V 7 Independent Output Channels 1.1Ω RDS(ON) per Channel User Programmable AS2Cwire Interface Low Quiescent Current ▪ 6.3μA Operational ▪ 0.1μA in shutdown • -40°C to +85°C Temperature Range • Available in SC70JW-10 Package The switch states are controlled by AnalogicTech’s Simple Serial Control (AS2Cwire) interface which permits ease of control and efficiency of size. The quiescent supply current is very low, typically 6.3μA. In shutdown mode, the supply current is reduced to less than 1μA. Applications The AAT4292 is offered in a Pb-free, 10-pin SC70JW package specified over the -40°C to +85°C temperature range. • Cell Phone Keypad, Backlight And Fashion Lighting Control • I/O Expander • Media Players • Multiple Channel Low Power Switching • Portable Electronic Devices Typical Application Input Voltage Supply VIN CIN 1μF OUT1 Output 1 OUT2 Output 2 OUT3 Output 3 AAT4292 Control Logic EN/SET OUT4 Output 4 OUT5 Output 5 OUT6 Output 6 OUT7 Output 7 GND 4292.2008.08.1.0 www.analogictech.com 1 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Pin Descriptions Symbol Pin # OUT4 OUT5 OUT6 OUT7 GND 1 2 3 4 5 EN/SET 6 OUT1 OUT2 OUT3 7 8 9 VIN 10 Function P-channel MOSFET drain; Channel 4 output pin. P-channel MOSFET drain; Channel 5 output pin. P-channel MOSFET drain; Channel 6 output pin. P-channel MOSFET drain; Channel 7 output pin. Ground connection. Input control pin using AS2Cwire serial interface. The device records rising edges of the clock, and decodes them into 128 states controlling the ON/OFF states of the outputs. See Table 1 and Table 2 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. P-channel MOSFET drain; Channel 1 output pin. P-channel MOSFET drain, Channel 2 output pin. P-channel MOSFET drain, Channel 3 output pin. Input supply voltage. VIN is connected to the P-channel MOSFET common sources. Connect a 1μF ceramic capacitor from VIN to GND. Pin Configuration SC70JW-10 (Top View) OUT4 OUT5 OUT6 OUT7 GND 2 1 10 2 9 3 8 4 7 5 6 VIN OUT3 OUT2 OUT1 EN/SET www.analogictech.com 4292.2008.08.1.0 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Absolute Maximum Ratings1 Symbol VIN VOUT VEN/SET IMAX TJ VESD Description VIN to GND OUT to GND EN/SET to GND Maximum Continuous Switch Current Operating Junction Temperature Range ESD Rating – HBM2 Value Units -0.3 to 6.0 -0.3 to VIN + 0.3 -0.3 to 6.0 250 -40 to 150 4000 V V V mA °C V Value Units 225 440 °C/W mW Thermal Information Symbol ΘJA PD Description Thermal Resistance Maximum Power Dissipation4 (TA = 25°C) 3 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. Human body model is a 100pF capacitor discharged through a 1.5kΩ resistor to each pin. 3. Mounted on a FR4 board. 4. Derate 4.4mW/°C above 25°C. 4292.2008.08.1.0 www.analogictech.com 3 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Electrical Characteristics1 VIN = 5.0V, TA = -40°C to 85°C unless otherwise noted. Typical values are TA = 25°C. Symbol Description Conditions Power Supply and MOSFETs VIN Operation Voltage IQ Quiescent Current ISD(OFF) Shutdown Current RDS(ON) P-Channel High-Side MOSFET On-State Resistance Min Output Turn-On Delay Time2 Turn-On Rise Time Output Turn-Off Delay Time3 Control Logic (EN/SET) VEN(L) Enable Threshold Low VEN(H) Enable Threshold High tLO EN/SET Low Time tHI tOFF tLAT ISINK Minimum EN/SET High Time EN/SET Off Timeout EN/SET Latch Timeout EN/SET Input Leakage Current Max Units 5.5 V 6.3 10 μA 0.1 1.1 1.2 1.5 2.5 2800 1.0 1.7 1.8 2.2 3.8 μA 1.8 EN/SET = VIN = 5V, IOUTn = 0, All Switches ON EN/SET = GND, VIN = 5V, OUTn = 0 VIN = 5.0V, IOUTn = 100mA, TA = 25oC VIN = 4.2V, IOUTn = 100mA, TA = 25oC VIN = 3.0V, IOUTn = 100mA, TA = 25oC VIN = 1.8V, IOUTn = 100mA, TA = 25oC TCRDS On-State Resistance Temperature Coefficient Switch Timing tD(ON) tR tD(OFF) Typ VIN = 5V, RLOAD = 500Ω, COUT = 100nF VIN = 5V, RLOAD = 500Ω, COUT = 100nF VIN = 5V, RLOAD = 500Ω VIN = 1.8V VIN = 5.5V VEN/SET < 0.4V VIN ≤ 2.5V VIN > 2.5V VEN/SET = 5.5V ppm/°C 40 270 40 ns 0.4 1.6 100 1.3 1.15 0.01 Ω 500 250 4.0 4.0 1.0 V V ns ns μs μs μA 1. The AAT4292 is guaranteed to meet performance specification over the –40°C to +85°C operating temperature range, and is assured by design, characterization and correlation with statistical process controls. 2. tD(ON) is the time after latch timeout to 90% of the output voltage. 3. tD(OFF) is the time after off timeout to 10% of the output voltage. 4 www.analogictech.com 4292.2008.08.1.0 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Typical Characteristics Unless otherwise noted, VIN = 5.0V, CIN = 1μF, COUTn = 0.1μF, TA = 25°C. Quiescent Current vs. Input Voltage Quiescent Current vs. Temperature 8 Quiescent Current (µA) Quiescent Current (µA) 8 7 6 5 4 3 2 7 6 5 4 3 VIN = 5.0V VIN = 3.3V 2 1.5 2 2.5 3 3.5 4 4.5 5 -40 5.5 -15 10 Input Voltage (V) 35 60 85 Temperature (°C) VEN(H) and VEN(L) vs. Input Voltage RDS(ON) vs. Input Voltage 1.5 2.7 1.4 2.5 1.3 2.3 1.2 RDS(ON) (Ω Ω) VEN(H) and VEN(L) (V) (IOUT1-7 = 100mA) 1.1 1 0.9 0.8 0.7 0.5 1.5 2 2.5 3 3.5 4 4.5 5 2.1 1.9 1.7 1.5 1.3 1.1 VEN(H) VEN(L) 0.6 RDS1 RDS2 RDS3 RDS4 RDS5 RDS6 RDS7 0.9 0.7 1.5 5.5 2 2.5 1.4 1.4 1.3 1.3 1.2 1.2 1.1 RDS1 RDS2 RDS3 RDS4 RDS5 RDS6 RDS7 1 0.9 0.8 0.7 0.6 -15 10 35 4.5 5 5.5 60 1.1 RDS1 RDS2 RDS3 RDS4 RDS5 RDS6 RDS7 1 0.9 0.8 0.7 0.6 85 0.5 -40 Temperature (°C) 4292.2008.08.1.0 4 RDS(ON) vs. Temperature (VIN = 5.0V; IOUT1-7 = 10mA) RDS(ON) (Ω Ω) RDS(ON) (Ω Ω) RDS(ON) vs. Temperature (VIN = 5.0V; IOUT1-7 = 100mA) -40 3.5 Input Voltage (V) Input Voltage (V) 0.5 3 -15 10 35 60 85 Temperature (°C) www.analogictech.com 5 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Typical Characteristics Unless otherwise noted, VIN = 5.0V, CIN = 1μF, COUTn = 0.1μF, TA = 25°C. EN/SET Latch Timeout vs. Temperature EN/SET Off Timeout vs. Temperature 1.5 VIN = 5.0V VIN = 3.3V Off Timeout, tOFF (µs) Latch Timeout, tLAT (µs) 1.4 1.3 1.2 1.1 VIN = 5.0V VIN = 3.3V 1.4 1.3 1.2 1.1 1 -40 -15 10 35 60 85 -40 Temperature (°C) -15 10 35 60 85 Temperature (°C) EN/SET Timeout vs. Input Voltage Turn-On Characteristic (VIN = 5V; RL2 = RL6 = RL7 = 50Ω Ω; CO2 = CO6 = CO7 = 0.1µF) 1.8 Off Timeout Latch Timeout Timeout (µs) 1.7 VOUT7 (5V/div) 1.6 1.5 VOUT6 (5V/div) 1.4 1.3 VOUT2 (5V/div) 1.2 1.1 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 EN/SET (5V/div) Input Voltage (V) Turn-On Characteristic Time (2µs/div) Turn-On Characteristic (VIN = 5V; RL2 = RL6 = RL7 = 50Ω Ω; CO2 = CO6 = CO7 = 0.1µF) (VIN = 5V; RL2 = RL6 = RL7 = 50Ω Ω; CO2 = CO6 = CO7 = 0.1µF) VOUT7 (5V/div) VOUT7 (5V/div) VOUT6 (5V/div) VOUT6 (5V/div) VOUT2 (5V/div) VOUT2 (5V/div) EN/SET (5V/div) EN/SET (5V/div) Time (10µs/div) 6 Time (10µs/div) www.analogictech.com 4292.2008.08.1.0 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Typical Characteristics Unless otherwise noted, VIN = 5.0V, CIN = 1μF, COUTn = 0.1μF, TA = 25°C. Turn-On Characteristic Turn-On Characteristic (VIN = 5V; RL2 = RL6 = RL7 = 50Ω Ω; CO2 = CO6 = CO7 = 0.1µF) (VIN = 5V; RL2 = RL6 = RL7 = 50Ω Ω; CO2 = CO6 = CO7 = 0.1µF) VOUT7 (5V/div) VOUT6 (5V/div) VOUT7 (5V/div) VOUT6 (5V/div) VOUT2 (5V/div) VOUT2 (5V/div) EN/SET (5V/div) EN/SET (5V/div) Time (10µs/div) Transition of Outputs Time (10µs/div) Turn-Off Characteristic (VIN = 5V; RL2 = RL6 = RL7 = 50Ω Ω; CO2 = CO6 = CO7 = 0.1µF) (VIN = 5V; RL2 = RL6 = RL7 = 50Ω Ω; CO2 = CO6 = CO7 = 0.1µF) VOUT7 (5V/div) VOUT7 (5V/div) VOUT6 (5V/div) VOUT6 (5V/div) VOUT2 (5V/div) VOUT2 (5V/div) EN/SET (5V/div) EN/SET (5V/div) Time (10µs/div) 4292.2008.08.1.0 Time (10µs/div) www.analogictech.com 7 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Functional Block Diagram VIN OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 Logic Control and Level Shift UVLO ROM EN/SET AS2Cwire Interface GND Functional Description The AAT4292 consists of seven P-channel MOSFET power switches designed for I/O expansion applications. The device operates with input voltages ranging from 1.8V to 5.5V which, along with its extremely low operating current, makes it ideal for battery-powered applications. In cases where the input voltage drops below 1.8V, the AAT4292 MOSFETs are protected from entering the linear region of operation by automatically shutting down. 8 In addition, the TTL-compatible EN/SET pin makes the AAT4292 an ideal level-shifted load switch. An optional slew rate controlling feature eliminates inrush current when a MOSFET is turned on, allowing the AAT4292 to be implemented with a small input capacitor or no capacitor at all, while maintaining isolation between channels. During slewing, the current ramps linearly until it reaches the level required for the output load condition. The proprietary control method works by careful control and monitoring of the MOSFET gate volt- www.analogictech.com 4292.2008.08.1.0 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander age. When the device is switched ON, the gate voltage is quickly increased to the threshold level of the MOSFET. Once at this level, the current begins to slew as the gate voltage is slowly increased until the MOSFET becomes fully enhanced. Once it has reached this point, the gate is quickly increased to the full input voltage and RDS(ON) is minimized. AS2Cwire Serial Interface The ON/OFF states of the seven MOSFET switches are controlled by the EN/SET serial clock input. An internal control counter is clocked on the rising edges of the EN/ SET pin and is decoded into 128 possible states of the MOSFET (see Table 1 and Table 2). The counter can be clocked at speeds up to 1MHz, but the count value is not latched until clocking has stopped and the EN/SET pin has remained high for the tLAT timeout (approximate 1.15μs typical). The first rising edge of EN/SET enables the AAT4292 and is counted as the first clock. AS2Cwire relies on the number of rising edges of the EN/ SET pin to address and load the registers, as illustrated in Figure 1. AS2Cwire latches data (1 to 32 edges) or address (33 to 36 edges) after the EN/SET pin has been held high for time tLAT. The interface records rising edges of the EN/SET pin and decodes them into one of four addresses corresponding to the address table (Table 1), or 1 of 32 data settings corresponding to the switch code table (Table 2). The combined address and data is used to decode one of 128 possible switch states. Address and Data are differentiated by the number of rising edges on the EN/SET pin. 1 to 32 rising edges signifies Data, and 33 to 36 rising edges signifies Address. The counter can be clocked at speeds up to 1MHz, such that intermediate states are not visible. The first rising edge of EN/SET enables the IC and turns the switches OUT3-OUT7 on. Once the final clock cycle is received, the EN/SET pin is held high to maintain the device setting. The device is disabled after the EN/SET pin transitions to a logic low state for tOFF timeout (approximate 1.3μs typical). There are four address switch bank in AAT4292, which is selected by the corresponding rising edges 33 to 36, after remaining the EN/SET high for the tLAT timeout, then the clock number is latched and the relevant address switch bank (0 to 3) is asserted. Next, the corresponding rising edges of Data from 1 to 32 can be serial submitted, and closed by the EN/SET remaining high for tLAT timeout. After the timeout tLAT, the outputs status is updated accordingly. The AAT4292 is disabled after the EN/SET pin has transitioned and remained in a logic low for tOFF timeout, and the quiescent current drops to 0.1μA typically. The ON/OFF states of the seven output channels are 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 one of 128 possible states using a short address and data word (see Tables 1 and 2). Address Code Address Switch Bank Code EN/SET Rising Edges 0 1 2 3 33 34 35 36 Table 1: AS2Cwire Address Table. 4292.2008.08.1.0 www.analogictech.com 9 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Data Code Address Data OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 Address Data OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 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 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 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 2 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 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 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 Address Data OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 Address Data OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 1 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 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 3 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 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 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: AS2Cwire Data Code Table. 10 www.analogictech.com 4292.2008.08.1.0 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Application Information Thermal Considerations The AAT4292 is designed to deliver continuous output load currents. Due to its high integration, care must be taken in designing for higher load conditions. If greater loads are required, outputs can be tied together to deliver higher power to a given load. For the thermal calculation, assuming that the total current capability of the seven channels is ITOTAL, each chanI nel has the same current which is IOUT = TOTAL 7 , then 2 PTOTAL = 7IOUT2RDS(ON) = 7 ITOTAL RDS(ON) = PD - PDERATE(TA - 25) 7 Where: PD = 440mW when TA = 25°C PDERATE = 4.4mW/°C RDS(ON) = 1.7Ω (maximum) when VIN = 5.0V For example, at 25oC ambient, the AAT4292 power capability is PTOTAL = 440mW, then ITOTAL ≅ 1.35A at VIN = 5.0V. The current capability for each channel is IOUT = 192mA. At 85oC ambient, the AAT4292 power capability is PTOTAL = 440 - (85 - 25)4.4 = 176mW, then ITOTAL ≅ 0.85A at VIN = 5.0V. The current capability for each channel is IOUT = 121mA. Output Sequencing If output sequencing is not necessary, then a pulse burst of 33 address clocks followed by 1 data clock will switch on all of the outputs simultaneously. Alternately, the OUT3 to OUT7 will be switched on simultaneously on the first rising edge of the EN/SET pin after the tLAT timeout. 4292.2008.08.1.0 Output sequencing is accomplished via a series of pulses on the EN/SET pin. Each time a new pulse burst is asserted on EN/SET, the AAT4292 internal clock counter starts to count and sends the counted clock number to the register. After the tLAT timeout, the internal clock counter is reset and waits for the next pulse burst. For example, to sequence the outputs in order from OUT1 to OUT7, seven clock bursts are input on the EN/SET pin. From Table 1 and Table 2, the first bust of 34 address clocks followed by 32 data clocks turns on OUT1. The next burst of 33 address clocks followed by 32 data clocks will add OUT2. Then the burst of 33 address clocks followed by 16 data clocks will add OUT3; the burst of 33 address clocks followed by 8 data clocks will add OUT4; the burst of 33 address clocks followed by 4 data clocks will add OUT5; the burst of 33 address clocks followed by 2 data clocks will add OUT6; the burst of 33 address clocks followed by 1 data clock will add OUT7. Likewise, the outputs can be turned on/off in any order by adding the corresponding clock bursts. Input Capacitor Normally, the input capacitor value could be ten times that of the total load capacitors. If the device outputs OUT1 to OUT7 have capacitor loads, depending on the load capacitor value, it is recommended that a 1μF to 10μF 0603 or 0805 ceramic capacitor be placed as close as possible between VIN and GND. For example, if the capacitor load at each output is 0.1μF, the Murata GRM21BR61C106K ceramic capacitor (10μF/16V/0805/ X5R) or a similar capacitor could be used. This helps to provide a low impendence loop to charge the load capacitors during the MOSFET switches' turn-on transient and keep the VIN voltage stable. www.analogictech.com 11 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Timing Diagram Address Data T LAT TLAT THI TLO EN/SET 1 2 32 33(34,35,36) 1 2 n≤32 OUT1 To OUT2 00 (or previous state ) 11( or 10,01,00 ) 00000 (or previous state ) 32-n Figure 1: AS2Cwire Timing Diagram. Application Circuits VIN : 1.8V to 5.5V VIN AAT4292 OUT1 1 EN/SET OUT2 System μController OUT3 GPIO 2 OUT4 GPIO 3 OUT5 GPIO 4 OUT6 GPIO 5 OUT7 EN 1 EN 2 EN 3 EN 4 EN 5 EN 6 EN 7 Function 1 Function 2 Function 3 Function 4 Function 5 Function 6 Function 7 GPIO 6 GPIO 7 GPIO 2 to GPIO 7 are now free for other uses Figure 2: GPIO I/O Expander (condense seven GPIO control lines to one). 12 www.analogictech.com 4292.2008.08.1.0 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander CIN AAT4292IJS SC70JW-10 2x2mm 1μF 1 Battery + 2 3 Battery - 4 R4 R5 R6 R7 LED4 LED5 LED6 LED7 5 OUT4 10 VIN OUT5 OUT3 OUT6 OUT2 OUT7 8 7 OUT1 GND GND 9 6 EN/SET R1 R2 R3 LED1 LED2 LED3 R8 100k GND GND Clock Figure 3: Keypad, Backlighting, or Fashion Lighting Control. Evaluation Board Schematic J1 Input Voltage VCC JP1 DC+ C9 3 2 1 U1 DC- 10μF 1 CON 1 2 TP4 3 TP5 4 TP6 R4 330Ω R5 330Ω C5 0.1μF C4 0 .1 μF LED4 R6 330Ω TP7 R7 330 Ω C7 0 .1μF C6 0.1μF LED5 5 OUT4 VIN OUT5 OUT 3 OUT6 OUT 2 OUT7 OUT 1 GND EN /SET GND 10 9 8 TP3 7 TP2 6 TP1 R1 330Ω C1 0.1 μF AAT4292 LED6 LED1 LED7 LED2 R3 R2 330Ω 330Ω C2 0 .1μF C3 0.1μF LED3 R8 100kΩ GND GND GND JP2 U2 OSC1 R13 330Ω R9 1kΩ C8 R10 1kΩ 1 2 3 4 R 11 1kΩ GND 1μF SW3 LED8 VDD GP5 GP4 GP3 VSS GP0 GP1 GP2 8 7 6 5 GND 20MHz PIC12F675 SW2 TP8 _GND SW1 GND Figure 4: AAT4292 Evaluation Board Schematic. 4292.2008.08.1.0 www.analogictech.com 13 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Evaluation Board Layout Figure 5: AAT4292 Evaluation Board Layout Top Layer (not to scale). 14 Figure 6: AAT4292 Evaluation Board Layout Bottom Layer (not to scale). www.analogictech.com 4292.2008.08.1.0 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Ordering Information Package Marking1 Part Number (Tape & Reel)2 SC70JW-10 4WXYY AAT4292IJQ-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/about/quality.aspx. Packaging Information SC70JW-10 2.20 ± 0.20 1.75 ± 0.10 0.40 BSC 0.225 ± 0.075 Top View 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 2.00 ± 0.20 2.10 ± 0.30 Side View End View All dimensions in millimeters. 1. XYY= assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD. 4292.2008.08.1.0 www.analogictech.com 15 PRODUCT DATASHEET AAT4292 SmartSwitchTM Seven Channel High-Side I/O Expander Advanced Analogic Technologies, Inc. 3230 Scott Boulevard, Santa Clara, CA 95054 Phone (408) 737-4600 Fax (408) 737-4611 © 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. Except as provided in AnalogicTech’s terms and conditions of sale, AnalogicTech assumes no liability whatsoever, and AnalogicTech disclaims any express or implied warranty relating to the sale and/or use of AnalogicTech products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. 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. AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. 16 www.analogictech.com 4292.2008.08.1.0