AAT1401

Advanced Analog Technology, Inc. AAT1401 Details are subject to change without notice. FOUR-CHANNEL DIGITAL STILL CAMERA POWER SUPPLY FEATURES Complete PWM Power Control Circuitry Input Voltage Range: 3.0V to 6.5V (CH1~CH4) Low Start-Up Voltage: 1.4V (CH4) Separate On/Off Control for CH1~CH4 Supports Synchronous Boost/Buck Rectification (CH1) Supports Synchronous Boost Rectification (CH4) Supports Boost/Buck Conversion (CH2) Supports Boost Conversion (CH3) Supports White LED Driver (CH3) Totem-Pole Output Short Circuit Protection Wide Operating Frequency: 100 kHz to 1MHz GENERAL DESCRIPTION The AAT1401 provides an integrated four channel pulse-width-modulation (PWM) solution for the power supply of DC-DC converter; this device offers system engineer flexibility to tailor-make the power supply circuitry for specific applications. Each channel contains its own error amplifier, PWM comparator, dead-time control (DTC) and output driver. The under-voltage protection, oscillator, short circuit protection and voltage reference circuit are the common features for the four channels. In addition to a boost conversion, AAT1401 also has two synchronous rectification systems with alternatives of a synchronous boost or buck on channel one (CH1) and a boost or buck conversion on channel two (CH2). LQFP48 and VQFN40 Package APPLICATIONS Camcorders Digital Cameras CCD Imaging Devices – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 1 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 PIN CONFIGURATION AAT1401 AAT1401 1 1 (VQFN-40) (LQFP-48) FUNCTION TABLE Condition SHDN “Lo” SD − Channel Status CH1 Off Off On Off On Off On Off On CH2 Off CH3 Off CH4 Off X SD1= “Lo” SD1= “Hi” SD2= “Lo” SD2= “Hi” SD3= “Lo” SD3= “Hi” SD4= “Lo” SD4= “Hi” “Hi” – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 2 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 PIN DESCRIPTION (VQFN-40) Pin No 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 33 34 35 36 37 38 39 40 Name MC1 SD1 SD4 SHDN IE1 IE4 DTC1 OE1 DTC4 NC OE4 RT CT VB GND VDD I/O I I I I I I I O I O O P P O I I I I I O O I I I O O O P P O O O Function Boost or Buck Select for CH1 ON/OFF Control for CH1 ON/OFF Control for CH4 Power ON/OFF Control Inverted Input for Error Amplifier 1 (EA1) Inverted Input for Error Amplifier 4 (EA4) Dead Time Control of CH1 Output for Error Amplifier 1 (EA1) Dead Time Control of CH4 Output for Error Amplifier 4 (EA4) External Frequency Setting Resistor External Frequency Setting Capacitor Reference Voltage 2.77V Output Ground Power Supply Reference Voltage 1.245V Output Short Circuit Protection Capacitor Connection Pin ON/OFF Control for CH3 ON/OFF Control for CH2 Inverted Input 2 for Error Amplifier 3 (EA3) Inverted Input for Error Amplifier 3 (EA3) Inverted Input for Error Amplifier 2 (EA2) Output for Error Amplifier 3 (EA3) Output for Error Amplifier 2 (EA2) Dead Time Control of CH3 Dead Time Control of CH2 Boost or Buck Select for CH2 CH2 Totem Pole Type Output CH3 Totem Pole Type Output CH4 Synchronous Rectifier Side Output Output Buffer Ground Output Buffer Power Supply CH4 Totem Pole Type Output CH1 Totem Pole Type Output CH1 Synchronous Rectifier Side Output VREF SCP SD3 NC SD2 IE3A IE3 IE2 OE3 OE2 DTC3 DTC2 MC2 NC OUT2 NC OUT3 OUT4_2 PGND PVDD OUT4_1 NC OUT1_1 OUT1_2 – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 3 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 PIN DESCRIPTION (LQFP-48) Pin No. 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 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Name NC NC MC1 SD1 SD4 SHDN IE1 IE4 DTC1 OE1 DTC4 NC OE4 RT CT NC VB NC GND NC VDD I/O I I I I I I I O I O O P P O I I I I I O O I I I O O O P P O O O Function Boost or Buck Select for CH1 ON/OFF Control for CH1 ON/OFF Control for CH4 Power ON/OFF Control Inverted Input for Error Amplifier 1 (EA1) Inverted Input for Error Amplifier 4 (EA4) Dead Time Control of CH1 Output for Error Amplifier 1 (EA1) Dead Time Control of CH4 Output for Error Amplifier 4 (EA4) External Frequency Setting Resistor External Frequency Setting Capacitor Reference Voltage 2.77V Output Ground Power Supply Reference Voltage 1.245V Output Short Circuit Protection Capacitor Connection Pin ON/OFF Control for CH3 ON/OFF Control for CH2 Inverted Input 2 for Error Amplifier 3 (EA3) Inverted Input for Error Amplifier 3 (EA3) Inverted Input for Error Amplifier 2 (EA2) Output for Error Amplifier 3 (EA3) Output for Error Amplifier 3 (EA2) Dead Time Control of CH3 Dead Time Control of CH2 Boost or Buck Select for CH2 VREF SCP SD3 NC SD2 IE3A IE3 IE2 OE3 OE2 DTC3 DTC2 MC2 NC NC OUT2 NC OUT3 NC OUT4_2 PGND NC PVDD OUT4_1 NC OUT1_1 OUT1_2 CH2 Totem Pole Type Output CH3 Totem Pole Type Output CH4 Synchronous Rectifier Side Output Output Buffer Ground Output Buffer Power Supply CH4 Totem Pole Type Output CH1 Totem Pole Type Output CH1 Synchronous Rectifier Side Output – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 4 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 BLOCK DIAGRAM – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 5 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage Input Voltage ( IE − , DTC − , SD − , SHDN) Symbol VDD VI VO Value 7 VDD Unit V V Output Voltage Output Current Output Peak Current ( t w ≦2µs, Duty≦5%) Operating Temperature Range Storage Temperature Range VDD +0.3 +20 +200 − 20 to + 85 − 45 to + 125 V mA mA ℃ ℃ IO I opeak TC Tstorage RECOMMENDED OPERATING CONDITIONS Parameter Startup Supply Voltage, CH4 Supply Voltage, VDD (CH1~CH4) Symbol VDD VDD VI VO Min 3.0 0.28 0 Max 1.4 6.5 1.55 Unit V V V V Input Voltage, (IE1~IE4) Output Voltage Oscillator Capacitor Oscillator Resistor (Note 1) Oscillator Frequency Output Current, (CH1~CH4) Output Current of Error Amplifier Operating Free-Air Temperature VDD 560 80 800 15 − 60 + 85 C OSC R OSC f OSC IO I OE TC 50 10 100 − 20 pF kΩ kHz mA µA ℃ – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 6 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) OSCILLATOR Parameter Symbol Frequency “Hi” Level Output Voltage “Lo” Level Output Voltage f OSC VOSCH VOSCL Test Condition C OSC = 100pF , R OSC = 35 kΩ Min Typ Max Unit 450 500 550 kHz V V C OSC = 100pF , R OSC = 35 kΩ C OSC = 100pF , R OSC = 35 kΩ VDD = 3.0V to 6.5V, TC = 25 oC C OSC = 100pF, R OSC = 35 kΩ 0.927 1.025 1.123 0.274 0.323 0.371 Frequency Change with VDD Frequency Change with TC f ∆V - 1 5 % f ∆T - 1 - % UNDER VOLTAGE PROTECTION Parameter Symbol Test Condition VUPH TC = 25 oC Upper Threshold Voltage Min Typ Max Unit 2.53 - 2.72 2.47 0.25 2.91 - V V V Lower Threshold Voltage Hysteresis ( VUPH – VUPL ) VUPL VHYS TC = 25 C TC = 25 C o o SHORT CIRCUIT PROTECTION CONTROL Parameter Symbol Test Condition Min Typ Max Unit Input Threshold Voltage Latch Reset Voltage Short-Circuit Detection Threshold Voltage SCP Terminal Source Current Vt VR Vtscd I SCP CH1,2,3,4 TC = 25 oC 1.220 1.245 1.285 0.58 − 3.5 V V V µA 2.47 0.63 − 2.5 0.68 − 1.5 Note 1: Typical values of all parameters except for ∆VREF VREF (dev) and f ∆T are specified at TC =25 ℃. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 7 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 ELECTRICAL CHARACTERISTICS, SPECIFIED (SEE NOTE 1) (CONT.) REFERENCE VOLTAGE Parameter VDD = 5.0V (UNLESS OTHERWISE Reference Voltage Short-Circuit Output Current Input Voltage Regulation Output Regulation Reference Voltage Change with Temperature EA (ERROR AMPLIFIER) Parameter Symbol Test Conditions Min Typ Max o VREF I REF = −1mA , TC = 25 C 1.227 1.245 1.263 I os VREF = 0 − 35 − 17 −8 VRI I REF = −1mA , − 10 10 VDD = 3.0V to 6.5V VRO I REF = −0.1mA to − 10 10 − 1 mA ∆VREF VREF TC = − 20 ℃ to +85℃ Unit V mA mV mV % - 0.5 - Symbol Test Condition Min Typ Max Unit VTH Threshold Voltage VTH3 VTH3A Input Bias Current Input Voltage Range Open-Loop Voltage Gain Unity-Gain Bandwidth Output Voltage Swing Output Sink Current Output Source Current I IB VIR A VO BW1 VOS+ VOS− I OS+ I OS− CH1,2,4, OE=0.7V CH3 1.227 1.245 1.263 1.242 1.260 1.278 V CH3 0.352 0.370 0.398 CH1,4, VI = 0.28V to ±10 ±20 nA 1.55V CH1,4 0.28 65 1.3 OE=0.7V OE=0.7V 2.5 83 10 5.0 − 106 1.55 0.2 − 60 V dB MH z V mA µA – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 8 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.) DEAD-TIME CONTROL Parameter Input Bias Current (DTC1~DTC4) Test Condition Min Typ Max Unit I BDTC VDTC = 0.2V to 1.3V Vd0 Vd100 Duty = 0%, f OSC = 500kHz Duty = 100%, f OSC = 500kHz Duty = 100%, f OSC = 500kHz - - 200 - nA V Input Threshold Voltage (DTC1,2,3) Input Threshold Voltage (DTC4) 0.323 0.423 - 1.125 1.225 - V4d 0 Duty = 0%, f OSC = 500kHz V4d100 0.223 0.323 - 1.025 1.125 V OUTPUT STAGE Parameter ROH Output ON Resistor ROL SHUTDOWN ( SD − ) Parameter High Level SD − Low Level SD − Input Current OPERATING CURRENT Parameter Test Condition Min I O = − 15mA (CH1~CH3) - Typ Max Unit 18 9 16 9 30 15 25 15 I O = −15mA (CH4) I O = 15mA (CH1~CH3) I O = 15mA (CH4) - Ω Ω HSD LSD Test Condition Active Mode Stand-by Mode CH1~CH4 Min 1.4 - Typ Max 0.6 ±10 ±20 Unit V V nA Test Condition Min Typ Max Supply Current I DD−OFF SHDN=0V I DD−ON SHDN=“Hi”; SD1~SD4= “Hi” - 4.8 10 7.0 Unit µA mA – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 9 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 APPLICATION CIRCUIT CH1 Synchronous Solution – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 10 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 APPLICATION CIRCUIT CH1 Non-Synchronous Solution – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 11 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 APPLICATION CIRCUIT CH2 Solution – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 12 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 APPLICATION CIRCUIT CH3 Solution – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 13 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 APPLICATION CIRCUIT CH4 Synchronous Solution CH4 Non-Synchronous Solution – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 14 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 OPERATION CONDITION SETTING – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 15 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 PACKAGE DIMENSION VQFN40 PACKAGE – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 16 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 PACKAGE DIMENSION VQFN40 PACKAGE (CONT.) – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 17 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 PACKAGE DIMENSION (CONT.) VQFN40 PACKAGE (CONT.) DIMENSIONS IN MILLIMETERS SYMBOL DIMENSIONS IN INCHES MIN A A1 b C D D2 E E2 e L y 0.80 0.00 0.225 0.19 5.90 4.650 5.90 4.650 ----0.35 0 TYP 0.90 0.02 0.250 0.20 6.00 4.800 6.00 4.800 0.50 0.40 ----- MAX 1.00 0.05 0.275 0.25 6.10 4.950 6.10 4.950 ----0.45 0.076 MIN 0.031 0 0.009 0.0075 0.232 0.183 0.232 0.183 ----0.014 0 TYP 0.035 0.0008 0.010 0.0080 0.236 0.189 0.236 0.189 0.020 0.016 ----- MAX 0.039 0.0020 0.011 0.0100 0.240 0.195 0.240 0.195 ----0.018 0.003 NOTE: THE TERMINAL #1 IDENTIFIER IS A LASER MARKED FEATURE. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 18 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 PACKAGE DIMENSION LQFP48 PACKAGE – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 19 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 PACKAGE DIMENSION LQFP48 PACKAGE (CONT.) – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 20 of 21 V 0.1 Advanced Analog Technology, Inc. AAT1401 PACKAGE DIMENSION LQFP48 PACKAGE (CONT.) DIMENSIONIN MILLIMETERS SYMBOL MIN ----0.05 1.35 0.17 0.09 8.80 6.90 8.80 6.90 ----0.45 ----0C 0 o TYP --------1.40 0.22 ----9.00 7.00 9.00 7.00 0.50 0.60 1.00 3.5 C ----o MAX 1.60 0.15 1.45 0.27 0.20 9.20 7.10 9.20 7.10 ----0.75 ----7.0 o C 0.08 A A1 A2 b C E E1 D D1 e L L1 θ y – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 21 of 21 V 0.1