Advanced Analog Technology, Inc. AAT1343 Details are subject to change without notice 2-CHANNEL SWITCHING REGULATOR FEATURES GENERAL DESCRIPTION z Complete PWM Power Control Circuitry z Precision Reference：2.5V ± 1% (25 oC) z Under-Voltage Lockout (UVLO) Protection z Open Drain Output z Output Short Circuit Protection z Low Dissipation Current：1.6mA z Dead-Time Control：0 % to 100% z Wide Operating Frequency： The AAT1343 provides an integrated two-channel pulse-width-modulation (PWM) solution for the power supply of DC-DC system; this device offers the systems 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 these two channels. Both channels of AAT1343 can be used for DC-DC converter operations including step-up, step-down, and inverting. Dead-time control can be set to provide 0% to 100% dead-time through a resistive divider network. Soft-start can be implemented by paralleling the DTC resistor with a capacitor. Two dead-time control inputs are assigned for channel 1 (CH1) and channel 2 (CH2) individually, and dead-time control inputs can be used to control on / off operation. With a minimal number of external components, the AAT1343 offers a simple and cost effective solution. 10kHz to 800kHz z VDD Range：4.0V to 14.0V PIN CONFIGURATION TOP VIEW Ct 1 16 VREF Rt 2 15 SCP NE1 3 14 NE2 IE1 4 13 IE2 OE1 5 12 OE2 DTC1 6 11 DTC2 OUT1 7 10 OUT2 GND 8 9 VDD TSSOP-16 PACKAGE – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 1 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 PIN DESCRIPTION PIN NO. 1 NAME Ct I/O DESCRIPTION I External Timing Capacitor 2 Rt I 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NE1 IE1 OE1 DTC1 OUT1 GND VDD OUT2 DTC2 OE2 IE2 NE2 SCP VREF I I I I O External Timing Resistor Noninverting Input of Error Amplifier 1 Inverting Input of Error Amplifier 1 Output of Error Amplifier 1 Output 1 Dead-Time / Soft-Start Setting Output 1 Ground I Power Supply O Output 2 I Output 2 Dead-Time / Soft-Start Setting I Output of Error Amplifier 2 I Inverting Input of Error Amplifier 2 I Noninverting Input of Error Amplifier 2 I Timer Latch Setting O Reference Voltage (2.5V) Output – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 2 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 ABSOLUTE MAXIMUM RATINGS CHARACTERISTICS VALUE 14.0 VDD UNIT V V Output Voltage SYMBOL VDD VI VO VDD +0.3 V Output Current IO 120 mA Operating Free-Air Temperature Range TC − 20 to + 85 o Tstorage − 45 to + 125 o Pd 500 Supply Voltage Input Voltage ( IE − , DTC) Storage Temperature Range Power Dissipation C C mW RECOMMENDED OPERATING CONDITIONS CHARACTERISTICS Supply Voltage, VDD SYMBOL VDD Vcm MIN 4.0 MAX 14.0 UNIT V 0.5 1.6 V VO 0 VDD V Oscillation (OSC) Capacitance C OSC 100 15,000 pF Oscillation (OSC) Resistance R OSC 5.1 50.0 kΩ Oscillation (OSC) Frequency Output Current, I OUT1 , I OUT 2 f OSC 10 800 kHz IO - 100 mA TC − 20 85 Input Voltage at IE1 and IE2 Output Voltage Operating Free-Air Temperature o C – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 3 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 ELECTRICAL CHARACTERISTICS, VDD = 6.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) OSCILLATOR PARAMETER Frequency Frequency Changes with VDD SYMBOL f OSC f ∆V UNDER VOLTAGE PROTECTION PARAMETER SYMBOL Upper Threshold VUPH Voltage Lower Threshold VUPL Voltage Hysteresis VHYS ( VUPH – VUPL ) TEST CONDITION C OSC = 220pF, R OSC = 10 kΩ VDD = 4.0V to 14.0V, TC = 25 oC, C OSC = 220pF, R OSC = 10 kΩ TEST CONDITION MIN TYP MAX UNIT 320 400 480 kHz - 1 - % MIN TYP MAX UNIT TC = 25 oC 2.6 2.9 3.2 V TC = 25 oC 2.23 2.53 2.83 V TC = 25 oC - 0.37 - V SHORT CIRCUIT PROTECTION CONTROL PARAMETER SYMBOL TEST CONDITION MIN TYP MAX UNIT 0.95 1.05 1.15 V Input Threshold Voltage Vr1 Short-Circuit Detection Threshold Voltage Vr 2 1.48 1.64 1.80 V SCP Terminal Source Current I SCP − 3 .5 − 2 .5 − 1 .5 µA Stand-by Voltage Latch Voltage VSTB - 50 30 100 100 mV mV CH1, CH2 VLT Note 1: Typical values of all parameters are specified at TC =25 oC. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 4 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 ELECTRICAL CHARACTERISTICS, VDD = 6.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.) REFERENCE VOLTAGE PARAMETER Reference Voltage SYMBOL VREF Input Voltage Regulation VRI Output Voltage Regulation VRO EA (ERROR AMPLIFIER) PARAMETER SYMBOL VIO Input Offset Voltage Input Bias Current Input Voltage Range Open-Loop Voltage Gain Output Voltage Swing TEST CONDITION MIN TYP MAX UNIT I REF = −1mA , TC = 25 oC 2.480 2.505 2.530 I REF = −1mA , VDD = 4.0V to 14.0V I REF = −0.1mA to − 3.0 mA TEST CONDITION CH1, CH2, Unity Gain V - 1 5 mV - 1 10 mV MIN TYP MAX UNIT - - 6 mV 0.5 ± 15 ± 100 - 1.6 nA V A VO 70 85 - dB VOS+ 2.3 2.5 - VOS− - 0.7 0.9 I IB VIR CH1, CH2 CH1, CH2 V Output Sink Current I OS+ OE=1.25V 3 20 - Output Source Current I OS− OE=1.25V − 75 − 45 - mA µA 60 80 - dB Common-Mode Rejection Ratio CMRR – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 5 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 ELECTRICAL CHARACTERISTICS, VDD = 6.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.) DEAD-TIME CONTROL & PWM PARAMETER SYMBOL I IB Input Bias Current Input Threshold Voltage (DTC) Latch Input Voltage Latch Mode Source Current OUTPUT STAGE PARAMETER Saturation Voltage Leakage Current TEST CONDITION VDTC = 2.0V MIN TYP MAX UNIT µA 0.1 1.0 Vd 0 Duty = 0%, f OSC = 10kHz 1.87 Vd100 Duty = 100%, f OSC = 10kHz 1.38 1.48 1.58 VDTC I DTC = 40µA 2.28 2.48 - V I DTC DTC1, DTC2 = 0V − 560 − 200 - µA SYMBOL VSAT I LEAK OPERATING CURRENT SYMBOL PARAMETER I DD−OFF Supply Current I DD−ON 1.97 V TEST CONDITION MIN I O = 75mA（CH1, CH2） - VO =14.0V TEST CONDITION 2.07 - MIN TYP MAX UNIT 0.8 1.2 - 5 V µA TYP MAX UNIT Output “OFF” State - 1.3 1.8 mA R OSC =10 kΩ - 1.6 2.3 mA – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 6 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 BLOCK DIAGRAM OE1 NE1 IE1 OUT1 SCP Comp Err-Amp PWM GND UVC NE2 OUT2 IE2 OE2 Err-Amp PWM V REF Ct UVC DTC1 OSC Rt V REF UVC UVC DTC2 LATCH UVLO VDD LATCH VDD SCP V REF SCP VREF V REF UVC – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 7 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 APPLICATION CIRCUIT – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 8 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 TIMING CHART 1.97V OE DTC 1.05V 1.48V PWM OUTPUT OUTPUT 1.64V SCP tSCP SCP Comp 2.53V Lockout Free V DD Note: t SCP ≅ C SCP Vr 2 I SCP – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 9 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 PACKAGE DIMENSION 16-PIN TSSOP – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 10 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 PACKAGE DIMENSION (CONT.) SYMBOLS DIMENSIONS IN MILLIMETERS DEMINSIONS IN INCHES MIN TYP MAX MIN TYP MAX A 1.05 1.10 1.20 0.041 0.043 0.047 A1 0.05 0.10 0.15 0.002 0.004 0.006 A2 ------ 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 E1 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 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. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 11 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 TAPE AND REEL PACKING METHOD: 2,500PCS/REEL, 1 REEL/BOX – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 12 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 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 AAT1343 XXXXXX TSSOP16 BACK MARKING YYWW – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 13 of 14 V1.0 Advanced Analog Technology, Inc. AAT1343 ORDERING INFORMATION – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 14 of 14 V1.0