AAT1107 AAT | Alldatasheet
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Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 1 of 16 V 1.0 AAT1107 Details are subject to change without notice. BUCK_BOOST & BOOST PWM CONTROLLER WITH ADJUSTABLE LDO
FEATURES
z Complete PWM Power Control Circuitry CH1: Buck_Boost, CH2: Boost z Adjustable Low Dropout (LDO) Regulator z Under-Voltage Lockout (UVLO) Protection z Totem Pole Output z Output Short Circuit Protection z Dead Time Control : 0% to 100% z Wide Operating Frequency: 10kHz to 800kHz PIN CONFIGURATION IE1 OE1 DTC1 GND OUT1 VREF OUT3 SCP IE2 OE2 DTC2 OUT2 TOP VIEW IE3 VDD TSSOP-16 PACKAGE Rt Ct 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.
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 2 of 16 V 1.0 AAT1107 PIN DESCRIPTION Pin No Name I/O
Description
t C External Timing Capacitance t R External Timing Resistance IE3 I Inverting Input of LDO Regulator IE1 I Inverting Input of Error Amplifier 1 OE1 O Output of Error Amplifier 1 DTC1 I Output 1 Dead-Time / Soft-Start Setting OUT1 O Output 1 GND Ground VDD Power Supply OUT2 O Output 2 DTC2 I Output 2 Dead-Time / Soft-Start Setting OE2 O Output of Error Amplifier 2 IE2 I Inverting Input of Error Amplifier 2 NE2 O LDO Output SCP Timer Latch Setting REF V O Reference Voltage (2.505V) Output
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 3 of 16 V 1.0 AAT1107 ABSOLUTE MAXIMUM RATINGS Characteristics Symbol Value Unit Supply Voltage DD V 7.0 V Input Voltage ( IE , DTC) I V DD V V Output Voltage O V DD V +0.3 V Output Current O I 120 120 + mA Operating Free-Air Temperature Range C T to C o Storage Temperature Range storage T to 125 C o Power Dissipation d P 500 mW RECOMMENDED OPERATING CONDITIONS Symbol Min Max Unit Supply Voltage DD V 4.0 6.5 V Input Voltage, IE1, IE2, IE3 cm V 0.5 1.6 V Output Voltage O V DD V V Oscillator (OSC) Capacitance OSC C 100 15,000 pF Oscillator (OSC) Resistance OSC R 5.1 50.0 Ω k Oscillation (OSC) Frequency OSC f 800 kHz Output Current, OUT I OUT I O I 50 − mA Output Current, OUT I O I mA Operating Free-Air Temperature C T C o
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 4 of 16 V 1.0 AAT1107 ELECTRICAL CHARACTERISTICS, DD V = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) Oscillator Parameter Symbol Test Condition Min Typ Max Unit Frequency OSC f pF 220 COSC = Ω k R OSC 320 400 480 kHz Frequency Change with DD V V 6.0V to 4.0V VDD = C TC o pF 220 COSC = Ω k R OSC Under-Voltage Protection Parameter Symbol Test Condition Min Typ Max Unit Upper Threshold Voltage UPH V C TC o 2.6 2.9 3.2 V Lower Threshold Voltage UPL V C TC o 2.23 2.53 2.83 V Hysteresis ( UPL UPH V V HYS V C TC o 0.37 V Short Circuit Protection Control Parameter Symbol Test Condition Min Typ Max Unit Input Threshold Voltage r V CH2 2.10 2.40 2.65 V Input Threshold Voltage r V CH1 0.95 1.05 1.15 V Input Threshold Voltage r V CH3 1.05 Short-Circuit Detect Threshold Voltage tscd V 1.48 1.64 1.80 V SCP Terminal Source Current SCP I 5.3 5.2 5.1 A µ Stand-by Voltage STB V 100 mV Latch Voltage LT V 100 mV Note 1: Typical values of all parameters are specified at C TC o
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 5 of 16 V 1.0 AAT1107 ELECTRICAL CHARACTERISTICS, DD V = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.) Reference Voltage Parameter Symbol Test Condition Min Typ Max Unit Internal Reference Voltage REFi V mA IREF C TC o 1.220 1.233 1.246 Reference Voltage REF V mA IREF C TC o 2.430 2.505 2.580 V Input Voltage Regulation RI V mA IREF DD V =4.0V to 6.0V mV Output Regulation RO V mA 1.0 IREF to mA mV EA (Error Amplifier) Parameter Test Condition Min Typ Max Unit Input Offset Voltage IO V CH1, CH2, Unity Gain mV Input Bias Current IB I CH1, CH2 100 nA Input Voltage Range IR V CH1, CH2 0.5 1.6 V Open-Loop Voltage Gain VO A dB OS V 2.3 2.5 Output Voltage Swing OS V 0.7 0.9 V Output Sink Current OS I OE=1.25V mA Output Source Current OS I OE=1.25V A µ Common-Mode Rejection Ratio CMRR dB Operating Current Parameter Test Condition Min Typ Max Unit OFF DD I Output ”OFF” State 1.8 mA Supply Current ON DD I Ω k R OSC 2.0 mA
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 6 of 16 V 1.0 AAT1107 ELECTRICAL CHARACTERISTICS, DD V = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.) Dead-Time Control & PWM PARAMETER Symbol TEST CONDITION MIN TYP MAX UNIT Input Bias Current IB I DTC V =2V 0.1 1.0 V d V Duty=0%, OSC f =10kHz 1.87 1.97 2.07 Input Threshold Voltage (DTC1) 100 d V Duty=100%, OSC f =10kHz 1.38 1.48 1.58 V d V Duty=0%, OSC f =10kHz 1.38 1.48 1.58 Input Threshold Voltage (DTC2) 100 d V Duty=100%, OSC f =10kHz 1.87 1.97 2.07 V Latch Input Voltage (DTC1) DTC V A IDTC µ 2.28 2.48 V Latch Input Voltage (DTC2) DTC V A 100 IDTC µ 0.1 0.3 V Latch Mode Source Current (DTC1) DTC DTC1=0V 560 200 A µ Latch Mode Source Current (DTC2) DTC DTC2=2.0V 560 200 A µ Output Stage Parameter Symbol Test Condition Min Typ Max Unit High-Level Output Voltage OH V mA IO 3.6 4.0 V Low-Level Output Voltage OL V mA IO 0.8 1.2 V Rise Time RISE t L C =1,000pF 100 ns Fall Time FALL t L C =1,000pF 100 ns Leakage Current LEAK I O V =6.0V 5.0 A µ Capacitance at the Output Pin L C pF LDO Parameter Symbol Test Condition Min Typ Max Unit Output Voltage rd V DD V =5V, OUT V =3.3V 3.17 3.30 3.43 V Line Regulation I LR DD V =4.0V~6.5V, OUT I =10mA 0.08 0.30 Load Regulation O LR OUT I =1mA~30mA 0.1
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 7 of 16 V 1.0 AAT1107 BLOCK DIAGRAM SCP VREF UVLO OE1 IE1 IE2 OE2 DTC1 DTC2 SCP UVC LATCH UVC UVC VREF VREF VREF VDD Rt GND Ct LATCH PWM PWM UVC Err-Amp Err-Amp UVC OSC VDD SCP Comp Vr3 IE3 OUT3 VERFi 1.233V VREFi 1.233V VREFi 1.233V Vr1 Vr2 IE3 OUT1 VDD OUT2 VDD
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 8 of 16 V 1.0 AAT1107 APPLICATION CIRCUIT 1 AAT1107 OUT1 OUT2 VDD VDD OE1 IE1 OE2 IE2 Ct Rt GND SCP DTC2 DTC1 VREF VN1 VREF VP2 CSCP VN1 C11 VP2 C10 Ct Rt R10 R11 R12 C12 VP3 OUT3 IE3 C20
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 9 of 16 V 1.0 AAT1107 APPLICATION CIRCUIT 2 AAT1107 OUT1 OUT2 VDD VDD OE1 IE1 OE2 IE2 Ct Rt GND SCP DTC2 DTC1 VREF VN1 VREF VP2 CSCP VN1 C11 VP4 VP2 C10 Optional Circuit: Positive charge pump circuit Ct Rt R10 OUT3 IE3 VP3 C12 R11 R12 VDD Optional Circuit: enlarge output current C13 C14 VN2 Optional Circuit : negative charge pump circuit C20
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 10 of 16 V 1.0 AAT1107 BUCK-BOOST（INVERTING） TIMING CHART（CH1） Note: SCP r SCP scp I V C t 1.64V 2.53V LOCKOUT FREE 1.97V 1.48V tSCP 1.05V OE DTC PWMOUTPUT OUTPUT SCP SCPCOMP VDD
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 11 of 16 V 1.0 AAT1107 BOOST （STEP-UP）TIMING CHART （CH-2） Note: SCP r SCP scp I V C t 1.64V 2.53V LOCKOUT FREE tSCP PWMOUTPUT OUTPUT SCP SCP COMP VDD 1.97V 1.48V OE DTC 2.40V
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 12 of 16 V 1.0 AAT1107 PACKAGE DIMENSION 16-PIN TSSOP
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 13 of 16 V 1.0 AAT1107 PACKAGE DIMENSION (CONT.) DIMENSIONS IN MILLIMETERS DEMINSIONS IN INCHES SYMBOLS MIN TYP MAX MIN TYP MAX A 1.05 1.10 1.20 0.041 0.043 0.047 0.05 0.10 0.15 0.002 0.004 0.006 1.00 1.05 0.039 0.041 b 0.20 0.25 0.28 0.008 0.010 0.011 C 0.127 0.005 D 4.900 5.075 5.100 0.1930 0.1998 0.2000 E 6.20 6.40 6.60 0.244 0.252 0.260 4.30 4.40 4.50 0.170 0.173 0.177 e 0.65 0.026 L 0.50 0.60 0.70 0.020 0.024 0.028 y 0.076 0.003 θ o o o o 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.
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 14 of 16 V 1.0 AAT1107 TAPE AND REEL
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 15 of 16 V 1.0 AAT1107 TAPE AND REEL (CONT.) NOTE: 1. 10 SPROCKET HOLE PITCH CUMULATIVE TOLERANCE ± 0.2 MILLIMETERS. 2. CAMBER NOT TO EXCEED 1 MILLIMETER IN 100 MILLIMETERS. 3. MATERIAL: ANTI-STATIC BLACK ADVANTEK POLYSTYRENE. A AND B MEASURED ON A PLANE 0.3 MILLIMETERS ABOVE THE BOTTOM OF THE POCKET. K MEASURED FROM A PLANE ON THE INSIDE BOTTOM OF THE POCKET TO THE TOP SURFACE OF THE CARRIER. 6. 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
Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 16 of 16 V 1.0 AAT1107