DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver General Description Features The AAT4902 is a member of Skyworks' Application Specific Power MOSFET (ASPMTM) product family. It is a full-bridge, constant output voltage power stage operating with supply voltage range of 2.5V to 5.5V. The output states of AAT4902 are controlled by the input signals according to the input to output logic table. The output high voltage VOH is equal to 2.0 times of VLIM (the constant voltage setting point voltage) when VLIM ≤ VM/2 or equal to VM (the motor supply voltage) when VLIM > VM/2. AAT4902 is protected from shoot-through current by integrated break-before-make circuitry. • Wide Supply Voltage Range ▪VDD Range: 2.5V to 5.5V ▪ VM Range: 2.5V to 5.5V • One Channel Constant Output Voltage Driver • Low Quiescent Mode ▪ 70µA in Quiescent Mode ▪ Less than 1µA in Shutdown Mode • Over-Temperature Protection • ±400mA Maximum Output Current • -40°C to 85°C Temperature Range • WLCSP-9 Package The internal over-temperature protection circuitry turns off the device when an over-temperature fault occurs and recovers automatically when the fault is removed. Applications • Digital Still Cameras (DSCs) • Smart Phones The AAT4902 is offered in the Pb-free, 9-pin wafer-level chip-scale package (WLCSP) package and is specified over the -40°C to +85°C temperature range. Typical Application VM 2.2μF VDD 2.2μF Enable EN INA INA INB INB VDD VM OUTA AAT4902 VLIM VLIM Motor OUTB GND Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 1 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Pin Descriptions Pin # Symbol A1 A2 A3 OUTA VM OUTB B1 INA B2 PGND B3 INB C1 C2 C3 VDD EN VLIM Description Output of the constant voltage H bridge. Motor power supply stage. Output of the constant voltage H bridge Input logic signal to control the output driver stage together with INB according to the input-output table. Power ground of the output driver stage. Input logic signal to control the output driver stage together with INA according to the input-output table. Supply voltage for the control circuit. Enable control; active high. Constant output voltage setting signal. Pin Configuration WLCSP-9 (Top View) 2 A B C 1 OUTA INA VDD 2 VM PGND EN 3 OUTB INB VLIM Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Absolute Maximum Rating TA = 25°C. Symbol VDD VM VIN VLIM PD TOPR TJMAX TSTG IOUT Description Power Supply Voltage Motor Power Supply Voltage Control Input Voltage Constant-Voltage Setting Power Dissipation Operating Temperature Range Junction Temperature Storage Temperature Range H-Bridge Ouput Current Value Units -0.3 to 6.0 -0.3 to 6.0 -0.3 to VDD + 0.3 -0.3 to VM + 0.3 704 -40 to 85 150 -55 to +150 -500 to +500 V V V V mW °C °C °C mA/ch Thermal Consideration Symbol PD θJA TJ Description Maximum Power Dissipation Thermal Resistance Operating Junction Temperature Range Value Units 704 142 -40 to 150 mW mW/°C °C Recommended Operating Conditions TA =-40°C to +85°C. Symbol VDD VM VIN VLIM IOUT Description Power Supply Voltage Motor Power Supply Voltage Control Input Voltage Constant-Voltage Setting H-Bridge Output Current Min Typ Max Units 2.5 2.5 0 0 3.0 5.0 5.5 5.5 VDD VM ±400 V V V V mA Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 3 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Electrical Characteristics TA = 25°C, VDD = 3.0V, VM = 5.0V unless otherwise specified. Symbol Description Conditions IS Shutdown Current VEN = 0 IOP Operating Current VEN = VINA = VDD, VINB = 0V, IVDD + IVM, No Load IQ Quiescent Current VEN = VDD, VINA = VINB = 0V, IVDD + IVM VINH VINL IINH IINL RIN IVLIM VUVLO 4 Input Voltage High Input Voltage Low High Level Input Current Low Level Input Current Pull-down Resistor Constant Voltage Control Input Current UVLO Voltage RON Output On-Resistance VOH TON TOFF TR TF TSD THYS Output H Voltage Turn-On Time Turn-Off Time Rise Time Fall Time Over-Temperature Threshold Over-Temperature Hysteresis Min Typ Max Units 0 1 µA 450 µA 70 µA 2 VIN = 3V VIN = 0V IOUT = ±400mA, VM = 5.0V, high and low sides in total VLIM = 1V, 10Ω Load IOUT = ±150mA, 10Ω Load IOUT = ±150mA, 10Ω Load IOUT = ±150mA, 10Ω Load IOUT = ±150mA, 10Ω Load 15 -1 50 -1.5 1.6 1.9 2.4 V V µA µA kΩ µA V 0.65 1.2 Ω 2 1.5 0.1 0.2 0.02 150 15 2.1 3 1 4 0.5 V µs µs µs µs °C °C 30 0 100 -0.5 0.7 60 200 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Timing Diagram 100% 50% 50% TON Input Logic Signal TOFF IOUT 0% TON TBBM TOFF 90% TBBM 90% 50% 50% 10% 10% 10% 50% 90% 10% 50% 90% TF 0% -100% TF TR 100% TR Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 5 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Typical Characteristics Operating Current vs. Power Supply Voltage Operating Current vs. Temperature (VM = 5V; VLIM = 0.75V; VEN = 3V; VINA = 3V; VINB = 0V; No Load) (VM = 5V; VLIM = 0.75V; VEN = 3V; VINA = 3V; VINB = 0V; No Load) 460 Operating Current (µA) Operating Current (µA) 510 480 450 420 VDD = 2.5V VDD = 3.6V VDD = 5.5V 390 360 -40 -15 10 35 60 445 440 435 3.7 4.0 4.3 4.6 4.9 5.2 5.5 (VM = 5V; VLIM = 0.75V; VEN = 3V; VINA = VINB = 0V) Quiescent Current (µA) 85 90 80 70 VDD = 2.5V VDD = 3.6V VDD = 5.5V 60 50 -40 -15 10 35 60 81 77 73 69 65 2.5 85 Temperature (°C) 1.6 VEN(L) (V) 1.6 1.4 1.2 85°C 25°C -40°C 0.8 3.4 3.7 4.0 4.3 4.6 Power Supply Voltage (V) 4.9 3.7 4.0 4.3 4.6 4.9 5.2 5.5 (VM = 5V; VLIM = 1V; VINA = 3V; VINB = 0V) 1.8 1.0 3.4 EN Input Low Threshold Voltage vs. Power Supply Voltage (VM = 5V; VLIM = 1V; VINA = 3V; VINB = 0V) 3.1 3.1 1.8 2.8 2.8 Power Supply Voltage (V) EN Input High Threshold Voltage vs. Power Supply Voltage VEN(H) (V) 3.4 Power Supply Voltage (V) 100 6 3.1 Quiescent Current vs. Power Supply Voltage Quiescent Current vs. Temperature 2.5 2.8 (VM = 5V; VLIM = 0.75V; VEN = 3V; VINA = VINB = 0V) Quiescent Current (µA) 450 430 2.5 85 Temperature (°C) 455 5.2 5.5 1.4 1.2 85°C 25°C -40°C 1.0 0.8 2.5 2.8 3.1 3.4 3.7 4.0 4.3 4.6 4.9 Power Supply Voltage (V) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 5.2 5.5 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Typical Characteristics INA/B Input High Threshold Voltage vs. Power Supply Voltage INA/B Input Low Threshold Voltage vs. Power Supply Voltage (VM = 5V; VLIM = 1V; VEN = 3V) 1.8 1.6 1.6 VENA(L) (V) VENA(H) (V) (VM = 5V; VLIM = 1V; VEN = 3V) 1.8 1.4 1.2 85°C 25°C -40°C 1.0 0.8 2.5 2.8 3.1 3.4 3.7 4.0 4.3 4.6 4.9 5.2 1.4 1.2 85°C 25°C -40°C 1.0 0.8 2.5 5.5 2.8 3.1 Power Supply Voltage (V) Shutdown Current vs. Temperature 4.6 4.9 5.2 5.5 4.4 3.8 VOH (V) Shutdown Current (µA) 4.3 5.0 0.06 0.04 3.2 2.6 2.0 0.02 0.00 -40 85°C 25°C -40°C 1.4 -15 10 35 60 0.8 0.5 85 0.7 0.9 1.1 1.3 Temperature (°C) High Side RDS(ON) vs. Temperature 650 1.9 2.1 2.3 2.5 Low Side RDS(ON) vs. Temperature 400 VDD = 2.5V VDD = 3.6V VDD = 5.5V 350 550 450 350 250 -40 1.7 (VM = 5V; VLIM = 3V; VEN = VINB = 3V; VINA = 0V; IOUT = 0.4A) RDS(ON)L (mΩ) 750 1.5 VLIM (V) (VM = 5V; VLIM = 3V; VEN = VINA = 3V; VINB = 0V; IOUT = 0.4A) RDS(ON)H (mΩ) 4.0 (VM = 5V; VDD = 3V; VEN = VINA = 3V; VINB = 0V) VDD = 2.5V VDD = 5.5V 0.08 3.7 Output H Voltage vs. VLIM (VM = 5V; VLIM = 1V; VEN = VINA = VINB = 0V) 0.10 3.4 Power Supply Voltage (V) VDD = 2.5V VDD = 3.6V VDD = 5.5V 300 250 200 -15 10 35 Temperature (°C) 60 85 150 -40 -15 10 35 60 85 Temperature (°C) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 7 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Typical Characteristics High Side RDS(ON) vs. Output Current Low Side RDS(ON) vs. Output Current (VM = 5V; VLIM = 3V; VEN = VINA = 3V; VINB = 0V) (VM = 5V; VLIM = 3V; VEN = VINB = 3V; VINA = 0V) 300 600 280 VDD = 2.5V VDD = 3.6V VDD = 5.5V 500 450 RDS(ON)L (mΩ) RDS(ON)H (mΩ) 550 400 260 240 220 350 300 VDD = 2.5V VDD = 3.6V VDD = 5.5V 0 40 80 120 160 200 240 280 320 360 200 400 Output Current (mA) 0 40 80 R DS(ON) (mΩ) 200 240 280 320 360 400 Input-Output Logic (VM = 5V; VLIM = 3V; VEN = 3V; IOUT = 0.4A) (VDD = VM = VINA = VINB = VLIM = 3.6V) INA (5V/div) High Side Low Side 500 160 Output Current (mA) MOSFETs RDS(ON) vs. Power Supply Voltage 600 120 INB (5V/div) VOUTA (2V/div) 400 300 VOUTB (2V/div) 200 0 0 0 0 100 2.5 2.8 3.1 3.4 3.7 4.0 4.3 4.6 4.9 5.2 5.5 Time (400µs/div) Power Supply Voltage (V) Turn On Turn Off (VDD = VM = 3.6V; VLIM = 0.75V; ILOAD = 150mA) INA (2V/div) VOUTA (1V/div) IOUT (100mA/div) INA (2V/div) 0 VOUTA (1V/div) 0 IOUT (100mA/div) 0 Time (400ns/div) 8 (VDD = VM = 3.6V; VLIM = 0.75V; ILOAD = 150mA) 0 0 0 Time (40ns/div) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Functional Block Diagram VDD UVLO VM Bandgap and Thermal Shutdown EN Sense 1 INA Logic Drive Stage INB OUTA Sense 2 OUTB VLIM PGND AGND Functional Description Input-Output Logic Table The AAT4902 is a full bridge driver configured with two half bridges. Each half bridge’s high-side MOSFET will be turned on when INA/B is driven high, and the low-side MOSFET will be turned off when INA/B is driven low. Each channel of AAT4902 can supply ±400mA to load. The device operating current is 70μA typical with VDD = VM = 5.0V and no input signal. When the enable pin (EN) is set to low, the device is turned off and the shutdown current is less then 0.1μA. The AAT4902 is protected from shoot-through current by the integrated breakbefore-make circuitry. The AAT4902 is configured with two input control pins, INA and INB. The control pins are active high to enable the H-bridge outputs. If INA and INB are in anti-phase, the device provides forward/reverse signal to drive the motor. Output H Voltage The output H voltage (VOH) can be programmed by setting the VLIM pin (constant output voltage setting pin): When VLIM ≤ VM/2, the output H voltage (VOH) is equal to 2.0 times VLIM; when VLIM > VM/2, the output H voltage (VOH) approximates VM voltage. Table 1 shows the Input-Output logic for the AAT4902. Input INA L L H H Output INB L H L H OUTA L L H Z OUTB L H L Z Table 1: AAT4902 Input-Output Logic Table. Note: When Z is the Constant-Voltage Driver state both top and bottom power MOSFETs are turned off. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 9 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Application Information Shoot-Through Protection Supply Capacitor The supply capacitor provides a low impedance loop for the edges of pulsed current drawn by the AAT4902 and reduces the surge current drawn from the input power. A 2.2μF or larger X7R or X5R low ESR/ESL ceramic capacitor is selected for the power supply decoupling. The capacitor should be placed as closely as possible to the VDD pin. This keeps the high frequency content of input current localized, minimizing EMI and supply voltage ripple. Output H Voltage The output H voltage (VOH) can be programmed by setting VLIM (constant output voltage setting voltage); the VM voltage should never be exceeded: The internal high-side and low-side MOSFETs of the AAT4902 cannot conduct at the same time to prevent shoot-through current. When the high-side MOSFET turns on, the low-side MOSFET turns off first; after breakbefore-make time (TBBM; see Timing Diagram), the highside MOSFET then turns on. Similarly, before the low-side MOSFET turns on, the high-side MOSFET turns off; after a certain break-before-make time (TBBM), the low-side MOSFET turns on. The dead time between the high-side and low-side turn-on should be kept as low as possible to minimize current flows through tbe body diode of the high-side and/or low-side MOSFET(s). The break-beforemake shoot-through protection significantly reduces losses associated with the driver at high frequency. Over-Temperature Protection (Voltage in V; when VLIM > VM/2, output H voltage is equal to the VM voltage) Over-temperature protection is active and disables the AAT4902 when the die temperature of the device exceeds tSD (150°C). When the fault is removed by the die temperature dropping below tSD minus the hysteresis of 15°C, the AAT4902 automatically recovers to normal operation. For example, if VLIM is 1.0V and VM is 5.0V, then the output H voltage (VOH) is 2.0V typical. Thermal Calculations VOH = 2.0 · VLIM Figure 1 shows the relation between the output H voltage (VOH) and VLIM. Output H Voltage vs. VLIM (VDD = VM = 5.5V; IOUT = 0; TA = 25°C) Output H Voltage (V) 6 The AAT4902 can provide ±400mA output current to drive a motor. The limiting characteristic for the maximum output power is essentially package power dissipation and the device's internal thermal limit. At any given ambient temperature (TA), the maximum package power dissipation can be determined by the following equation: 5 PD(MAX) = 4 TJ(MAX) - TA ΘJA 3 Where: 2 TJ (MAX) = junction temperature of the die (125°C) TA = ambient temperature (25°C) θJA = thermal resistance (142°C/W) 1 0 0 1 2 3 4 5 6 VLIM (V) Figure 1: Output H Voltage vs. VLIM. 10 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Typical Application Circuit VM 2.5 - 5.5V CIN 2.2μF VDD 2.5 - 5.5V CIN 2.2μF Enable EN INA VDD VM OUTA INA DC M Motor AAT4902 INB INB VLIM VLIM OUTB GND Figure 2: Full Bridge Motor Driver Application Using AAT4902. Evaluation Board Schematic J1 M1 U1 AAT4902 VDD C1 CIN 2.2μF EN INA INB C2 B1 B3 VM VDD EN VLIM INA INB OUTA GND B2 OUTB M2 A2 C3 A1 A3 R1 VLIM C1 2.2μF OUTA Motor OUTB VM M3 M4 GND GND U1: AAT4902IUR C1, CIN: 0603 X7R 2.2μF 10V GRM188R71A225KE15 Figure 3: AAT4902 Evaluation Board Schematic. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 11 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Evaluation Board Layout Figure 4: AAT4902 Evaluation Board Top Side Layout. Figure 5: AAT4902 Evaluation Board Top Side Layout (detail). Figure 6: AAT4902 Evaluation Board Bottom Side Layout. 12 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 DATA SHEET AAT4902 One-Channel Full-Bridge Motor Driver Ordering information Package Marking1 Part Number (Tape and Reel)2 WLCSP-9 E9YY AAT4902IUR-T1 Skyworks Green™ products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of Green™, document number SQ04-0074. Package Information WLCSP-9 0.2 (Ref.) Pin 1 Indication 0.800 BSC 0.300 0.100 0.170 ± 0.025 0.620 ± 0.085 0.100 0.300 1.200 ± 0.035 0.400 BSC 0.800 BSC 0.205 ± 0.025 0.380 ± 0.025 Side View 1.200 ± 0.035 Top View Line 2 0.070 ± 0.035 Line 1 Bottom View All dimensions in millimeters. 1 .YY = date code. 2 .Sample stock is generally held on part number listed in BOLD. Copyright © 2012 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes. No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale. THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202219A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 30, 2012 13