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| Advanced Analog Technology, Inc. AAT1107 Details are subject to change without notice. BUCK_BOOST & BOOST PWM CONTROLLER WITH ADJUSTABLE LDO FEATURES Complete PWM Power Control Circuitry CH1: Buck_Boost, CH2: Boost Adjustable Low Dropout (LDO) Regulator Under-Voltage Lockout (UVLO) Protection Totem Pole Output Output Short Circuit Protection Dead Time Control : 0% to 100% Wide Operating Frequency: 10kHz to 800kHz GENERAL DESCRIPTION The AAT1107 provides an integrated two-channel pulse-width-modulation (PWM) solution for the power supply of DC-DC system. This device offers system engineers the flexibility to tailor-make the power supply circuitry for the specific applications. Each channel contains its own error amplifier, PWM comparator, dead-time control (DTC) and output driver. The two channels share common features of under-voltage protection, oscillator, short circuit protection and voltage reference circuit. Two dead-time control inputs are assigned for channel (CH1) and channel 2 (CH2) individually, and dead-time control inputs can be used to control on/off operation. The AAT1107 contains one step-up (boost) circuit at CH2 and one inverting (buck_boost) circuit at CH1. In addition, DTC can be set to provide 0% to 100% dead-time through a resistive divider network and soft-start can be implemented by paralleling the DTC resistor with a capacitor. The Maximum output current of LDO regulator can be enlarged by connecting an nMOSFET (or NPN bipolar) as a source follower stage at OUT3 pin. PIN CONFIGURATION TOP VIEW Ct Rt IE3 IE1 OE1 DTC1 OUT1 GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VREF SCP OUT3 IE2 OE2 DTC2 OUT2 VDD TSSOP-16 PACKAGE - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 1 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 PIN DESCRIPTION Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name Ct Rt IE3 IE1 OE1 DTC1 OUT1 GND VDD OUT2 DTC2 OE2 IE2 NE2 SCP VREF I/O Description - External Timing Capacitance - External Timing Resistance I I O I O O I O I O O Inverting Input of LDO Regulator Inverting Input of Error Amplifier 1 Output of Error Amplifier 1 Output 1 Dead-Time / Soft-Start Setting Output 1 Ground Power Supply Output 2 Output 2 Dead-Time / Soft-Start Setting Output of Error Amplifier 2 Inverting Input of Error Amplifier 2 LDO Output Timer Latch Setting Reference Voltage (2.505V) Output - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 2 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 ABSOLUTE MAXIMUM RATINGS Characteristics Symbol VDD VI VO Value 7.0 VDD Unit V V Supply Voltage Input Voltage ( IE - , DTC) Output Voltage Output Current Operating Free-Air Temperature Range Storage Temperature Range Power Dissipation VDD +0.3 - 120 / + 120 - 20 to + 85 - 45 to + 125 V mA o o IO TC Tstorage C Pd 500 C mW RECOMMENDED OPERATING CONDITIONS Supply Voltage Input Voltage, IE1, IE2, IE3 Output Voltage Oscillator (OSC) Capacitance Oscillator (OSC) Resistance Oscillation (OSC) Frequency Output Current, I OUT1 , I OUT 2 Output Current, I OUT 3 Operating Free-Air Temperature Symbol VDD Vcm Min 4.0 Max 6.5 Unit V 0.5 0 100 5.1 10 - 20 1.6 VDD 15,000 50.0 800 + 50 / - 50 V V pF k VO C OSC R OSC f OSC I O12 I O3 TC kHz mA 30 85 mA o C - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 3 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) Oscillator Parameter Symbol Test Condition C OSC = 220pF , R OSC = 10k Min Typ Max Unit Frequency f OSC 320 400 480 kHz VDD = 4.0V to 6.0V Frequency Change with VDD f V TC = 25o C C OSC = 220pF R OSC = 10k 1 % Under-Voltage Protection Parameter Symbol Test Condition Min Typ Max Upper Threshold Voltage Lower Threshold Voltage Hysteresis (VUPH - VUPL ) VUPH VUPL VHYS TC = 25 C TC = 25o C TC = 25o C o 2.6 2.9 3.2 2.83 - Unit V V V 2.23 2.53 0.37 Short Circuit Protection Control Parameter Symbol Test Condition Min Typ Max Unit Input Threshold Voltage Input Threshold Voltage Input Threshold Voltage Short-Circuit Detect Threshold Voltage SCP Terminal Source Current Stand-by Voltage Latch Voltage Vr 2 Vr1 Vr 3 Vtscd I SCP VSTB VLT CH2 CH1 CH3 2.10 0.95 1.48 - 3 .5 2.40 1.05 1.05 1.64 - 2 .5 2.65 1.15 1.80 - 1 .5 V V V A - 50 30 100 100 mV mV Note 1: Typical values of all parameters are specified at TC = 25o C . - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 4 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.) Reference Voltage Parameter Internal Reference Voltage Reference Voltage Input Voltage Regulation Output Regulation EA (Error Amplifier) Parameter Symbol Test Condition Min Typ Max Unit o VREFi I REF = -1mA , TC = 25 C 1.220 1.233 1.246 V VREF I REF = -1mA , TC = 25o C 2.430 2.505 2.580 VRI VRO I REF = -1mA , VDD =4.0V to 6.0V I REF = -0.1mA to - 1mA - 1 1 5 - mV mV Input Offset Voltage Input Bias Current Input Voltage Range Open-Loop Voltage Gain Output Voltage Swing Output Sink Current Output Source Current Common-Mode Rejection Ratio Operating Current Parameter VIO I IB VIR Test Condition CH1, CH2, Unity Gain Min Typ Max Unit 0.5 70 2.3 - 15 6 100 mV nA V dB V mA A CH1, CH2 CH1, CH2 85 2.5 0.7 20 - 75 1.6 0.9 - 45 A VO VOS+ VOS- I OS+ I OS- CMRR OE=1.25V OE=1.25V 3 60 80 - dB Test Condition Min Typ Max Unit mA mA I DD-OFF Supply Current I DD-ON Output "OFF" State R OSC = 10k - 1.8 2.0 - - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 5 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.) Dead-Time Control & PWM PARAMETER Input Bias Current Symbol TEST CONDITION VDTC =2V I IB MIN TYP MAX UNIT 0.1 1.0 V 1.87 1.97 2.07 Input Threshold Voltage (DTC1) Input Threshold Voltage (DTC2) Latch Input Voltage (DTC1) Latch Input Voltage (DTC2) Latch Mode Source Current (DTC1) Latch Mode Source Current (DTC2) Output Stage Parameter High-Level Output Voltage V1d 0 V1d100 V2d 0 V2d100 V1DTC V2 DTC I1DTC I 2 DTC Duty=0%, f OSC =10kHz Duty=100%, f OSC =10kHz Duty=0%, f OSC =10kHz Duty=100%, f OSC =10kHz I DTC = 40A I DTC = 100A DTC1=0V DTC2=2.0V 1.38 1.38 1.87 2.28 - 1.48 1.48 1.97 2.48 0.1 1.58 1.58 2.07 0.3 V V V V A A - 560 - 200 - 560 - 200 Symbol Test Condition VOH I O = -50mA Min 3.6 Typ 4.0 Max - Unit V V ns ns A Low-Level Output Voltage Rise Time Fall Time Leakage Current Capacitance at the Output Pin LDO Parameter Output Voltage VOL t RISE t FALL I LEAK CL I O = +50mA C L =1,000pF C L =1,000pF VO =6.0V - 0.8 100 100 - 1.2 5.0 - pF Symbol Test Condition Vrd VDD =5V, VOUT 3 =3.3V Min 3.17 Typ 3.30 Max 3.43 Unit V % % Line Regulation Load Regulation LR I LR O VDD =4.0V~6.5V, I OUT 3 =10mA I OUT 3 =1mA~30mA - 0.08 0.1 0.30 - - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 6 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 BLOCK DIAGRAM OE1 IE1 Vr1 VDD VERFi 1.233V Err-Amp SCP Comp PWM Vr2 IE3 OUT1 GND Vr3 VREFi 1.233V UVC VDD OUT2 IE2 OE2 Err-Amp PWM VREF UVC Ct DTC1 OSC DTC2 UVC UVC LATCH VDD LATCH Rt UVLO VDD SCP SCP IE3 OUT3 UVC VREFi 1.233V VREF VREF VREF - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 7 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 APPLICATION CIRCUIT 1 VDD U1 VDD VN1 C1 C11 OUT1 R5 Q1 D1 L1 C9 OE1 R1 R2 VN1 IE1 L2 VREF VP2 C2 R6 AAT1107 D2 VP2 Q2 OE2 R3 OUT2 OUT3 R11 C10 IE2 R4 VP3 IE3 R12 C12 VREF C20 C5 R9 R7 Ct DTC1 Rt DTC2 R10 R8 C4 SCP GND Rt Ct CSCP - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 8 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 APPLICATION CIRCUIT 2 VDD C11 Optional Circuit: Positive charge pump circuit U1 VDD VN1 C1 D4 VP4 OUT1 Q1 D1 L1 C9 R5 VN1 C8 D3 C7 OE1 R1 R2 IE1 L2 VREF VP2 C2 R6 AAT1107 D2 VP2 OE2 R3 Q2 OUT2 VDD OUT3 R11 Q3 C10 IE2 R4 VP3 C12 C13 VN2 D5 D6 C14 IE3 VREF C20 C5 R9 R7 R12 Ct DTC1 Rt DTC2 R10 R8 C4 Optional Circuit: enlarge output current Optional Circuit : negative charge pump circuit SCP GND Rt Ct CSCP - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 9 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 BUCK-BOOST] INVERTING^ TIMING CHART] CH1^ 1.97V OE DTC 1.05V 1.48V PWMOUTPUT OUTPUT 1.64V SCP tSCP SCPCOMP 2.53V VDD LOCKOUT FREE Note: t scp C SCP Vr 2 I SCP - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 10 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 BOOST ] STEP-UP^ TIMING CHART ] CH-2^ 2.40V 1.97V DTC OE 1.48V PWMOUTPUT OUTPUT 1.64V SCP tSCP SCP COMP 2.53V VDD LOCKOUT FREE Note: t scp C SCP Vr 2 I SCP - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 11 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 PACKAGE DIMENSION 16-PIN TSSOP - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 12 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 PACKAGE DIMENSION (CONT.) SYMBOLS A A1 A2 b C D E E1 e L y DIMENSIONS IN MILLIMETERS MIN 1.05 0.05 -----0.20 -----4.900 6.20 4.30 -----0.50 -----TYP 1.10 0.10 1.00 0.25 0.127 5.075 6.40 4.40 0.65 0.60 -----MAX 1.20 0.15 1.05 0.28 -----5.100 6.60 4.50 -----0.70 0.076 DEMINSIONS IN INCHES MIN 0.041 0.002 -----0.008 -----0.1930 0.244 0.170 -----0.020 -----TYP 0.043 0.004 0.039 0.010 0.005 0.1998 0.252 0.173 0.026 0.024 -----MAX 0.047 0.006 0.041 0.011 -----0.2000 0.260 0.177 -----0.028 0.003 0 o 4 o 8 o 0 o 4 o 8o NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS 2. LEAD FRAME MATERIAL: OLIN C7025/EFTEC 64T 3. DIMENSION "D" DOES NOT INCLUDE MOLD FLASH, TIE BAR BURRS AND GATE BURRS. MOLD FLASH, TIE BAR BURRS AND GATE BURRS SHALL NOT EXCEED 0.006" [0.15 MILLIMETERS] PER END. DIMENSION "E1" DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" [0.25 MILLIMETERS] PER SIDE. 4. DIMENSION "b" DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.003" [0.08 MILLIMETERS] TOTAL IN EXCESS OF THE "b" DIMENSION AT MAXIMUM MATERIAL CONDITION. DAMBAR CANNOT BE LOCATED ON THE LOWER RADIUS OR THE FOOT. MINIMUM SPACE BETWEEN PROTRUSION AND AN ADJACENT LEAD TO BE 0.0028" [0.07 MILLIMETERS]. 5. TOLERANCE: 0.010 [0.25 MILLIMETERS] UNLESS OTHERWISE SPECIFIED. 6. OTHERWISE DIMENSION FOLLOW ACCEPTABLE SPEC. 7. REFERENCE DOCUMENT: JEDEC SPEC MO-153. - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 13 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 TAPE AND REEL - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 14 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 TAPE AND REEL (CONT.) NOTE: 1. 2. 3. 4. 5. 6. 10 SPROCKET HOLE PITCH CUMULATIVE TOLERANCE 0.2 MILLIMETERS. CAMBER NOT TO EXCEED 1 MILLIMETER IN 100 MILLIMETERS. MATERIAL: ANTI-STATIC BLACK ADVANTEK POLYSTYRENE. A 0 AND B 0 MEASURED ON A PLANE 0.3 MILLIMETERS ABOVE THE BOTTOM OF THE POCKET. K 0 MEASURED FROM A PLANE ON THE INSIDE BOTTOM OF THE POCKET TO THE TOP SURFACE OF THE CARRIER. POCKET POSITION RELATIVE TO SPROCKET HOLE MEASURED AS TRUE POSITION OF POCKET, NOT POCKET HOLE. PART MARKING TSSOP16 TOP MARKING AAT1107 XXXXXX TSSOP16 BACK MARKING YYWW - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 15 of 16 V 1.0 Advanced Analog Technology, Inc. AAT1107 ORDERING INFORMATION - - xAEWAniN/|-1/2q - Advanced Analog Technology, Inc. - Page 16 of 16 V 1.0 |
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