AAT1341

Advanced Analog Technology, Inc. AAT1341 Details are subject to change without notice 2-CHANNEL SWITCHING REGULATOR FEATURES Complete PWM Power Control Circuitry Under-Voltage Lockout (UVLO) Protection Open Drain Output Output Short Circuit Protection Low Dissipation Current：1.6mA Dead-Time Control：0 % to 100% Wide Operating Frequency： 10kHz to 800kHz GENERAL DESCRIPTION The AAT1341 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 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 of the two channels. Both channels of AAT1341 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 CH1 and CH2 individually, and dead-time control inputs can be used to control on / off operation. With a minimal number of external components, the AAT1341 offers a simple and cost effective solution. VDD Range：4.0V to 14.0V PIN CONFIGURATION TO V W P IE Ct Rt N E1 IE1 O E1 D1 TC O T1 U GD N 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 V EF R SC P N E2 IE2 O E2 D2 TC O T2 U VD D SO P-16PA K G CAE – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 1 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 PIN DESCRIPTION PIN NO NAME Ct 1 I/O DESCRIPTION I I I I I I O External Timing Capacitance External Timing Resistance 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Rt NE1 IE1 OE1 DTC1 OUT1 GND VDD OUT2 DTC2 OE2 IE2 NE2 SCP VREF 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 Power Supply I 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 16 V1.0 Advanced Analog Technology, Inc. AAT1341 ABSOLUTE MAXIMUM RATINGS CHARACTERISTICS SYMBOL VDD VI VO VALUE 14.0 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 − 20 to + 85 − 45 to + 125 V mA o o IO TC Tstorage C C Pd 500 mW RECOMMENDED OPERATING CONDITION CHARACTERISTICS Supply Voltage, VDD Input Voltage, IE1, IE2 SYMBOL VDD Vcm MIN 4.0 MAX 14.0 UNIT V 0.5 0 100 5.1 10 − 20 1.6 VDD 15,000 50.0 800 100 85 V V pF kΩ Output Voltage Oscillation (OSC) Capacitance Oscillation (OSC) Resistance Oscillation (OSC) Frequency Output Current, I OUT1 , I OUT 2 Operating Free-Air Temperature VO C OSC R OSC f OSC IO TC kHz mA o C – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 3 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 ELECTRICAL CHARACTERISTICS, VDD = 6.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) OSCILLATOR PARAMETER TEST CONDITION C OSC = 220pF, R OSC = 10kΩ MIN TYP MAX UNIT Frequency f OSC 320 400 480 kHz Frequency Changes with VDD f ∆V VDD = 4.0V to 14.0V, TC = 25 oC C OSC = 220pF, R OSC =10 kΩ - 1 - % UNDER VOLTAGE PROTECTION PARAMETER Upper Threshold Voltage VUPH TEST CONDITION TC = 25 oC MIN TYP MAX UNIT - 2.90 2.53 0.37 - V V V Lower Threshold Voltage Hysteresis ( VUPH – VUPL ) VUPL VHYS TC = 25 C TC = 25 C o o SHORT CIRCUIT PROTECTION CONTROL PARAMETER TEST CONDITION MIN TYP MAX UNIT Input Threshold Voltage Short-Circuit Detect Threshold Voltage SCP Terminal Source Current Stand-by Voltage Latch Voltage Vr1 Vr 2 I SCP VSTB VLT CH1, CH2 0.90 1.48 − 3 .5 1.05 1.64 − 2 .5 1.20 1.80 − 1 .5 V V µA - 50 30 100 100 mV mV Note1: 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 16 V1.0 Advanced Analog Technology, Inc. AAT1341 ELECTRICAL CHARACTERTISTICS, VDD = 6.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.) REFERENCE VOLTAGE PARAMTER SYMBOL TEST CONDITION MIN TYP MAX UNIT Reference Voltage Input Voltage Regulation Output Regulation VREF VRI VRO I REF = −1mA , TC = 25 oC I REF = −1mA , VDD = 4.0V to 14.0V I REF = −0.1mA to − 3.0 mA 2.4 - 2.5 1 1 2.6 5 10 V mV mV EA (ERROR AMPLIFIER) PARAMETER SYMBOL VIO Input Offset Voltage TEST CONDITION MIN TYP MAX UNIT CH1, CH2, Unity Gain CH1, CH2 CH1, CH2 0.5 70 2.3 - ±15 85 2.5 0.7 20 − 45 6 ±100 1.6 0.9 - mV nA V dB V mA µA dB Input Bias Current Input Voltage Range Open-Loop Voltage Gain Output Voltage Swing Output Sink Current Output Source Current Common-Mode Rejection Ratio I IB VIR A VO VOS+ VOS− I OS+ I OS− CMRR OE=1.25V OE=1.25V 3 − 75 60 80 – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 5 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 ELECTRICAL CHARACTERISTICS, VDD = 6.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.) DEAD-TIME CONTROL & PWM PARAMETER SYMBOL I IB Input Bias Current TEST CONDITION VDTC = 2.0V MIN TYP MAX UNIT 1.79 1.32 2.28 0.1 1.97 1.48 2.48 1.0 2.15 1.64 - µA V V µA Input Threshold Voltage (DTC) Latch Input Voltage Latch Mode Source Current OUTPUT STAGE PARAMETER Vd 0 Vd100 VDTC I DTC Duty = 0%, f OSC = 10kHz Duty = 100%, f OSC = 10kHz I DTC = 40µA DTC1, DTC2=0V − 560 − 200 Saturation Voltage Leakage Current OPERATING CURRENT PARAMETER SYMBOL VSAT I LEAK TEST CONDITION MIN I O = 75mA（CH1, CH2） VO =14.0V - TYP MAX UNIT 0.8 - 1.2 5.0 V µA TEST CONDITION MIN TYP MAX UNIT I DD−OFF Supply Current I DD−ON Output “OFF” State R OSC = 10kΩ - 1.3 1.6 1.8 2.3 mA mA – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 6 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 BLOCK DIAGRAM OE1 NE1 IE1 Err-Amp SCP Comp PWM OUT1 GND UVC NE2 IE2 OE2 Err-Amp PWM V REF UVC OUT2 Ct DTC1 OSC V REF UVC Rt DTC2 UVC LATCH UVLO VDD LATCH V SCP DD S CP UVC V REF VREF V REF – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 7 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 APPLICATION CIRCUIT VREF VDD R12 R13 R11 Optional Circuit: Charge Pump Circuit VDD VN1 C1 VP3 Q1 D1 L1 C9 NE1 R5 OUT1 VN1 D3 Inverting Output C8 D4 C7 OE1 R1 R2 R3 R4 IE1 VP2 VREF AAT1341 OUT2 VDD R16 VDD VDD L2 VP2 Q3 D2 Q2 Q4 C10 Step Up Output R17 VREF R14 C2 NE2 R6 OE2 IE2 R15 R18 VREF C4 R7 R9 C5 Ct DTC1 Rt DTC2 R8 R10 GND Ct Rt SCP CSCP – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 8 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 TIMING CHART 1.97V OE DTC 1.05V 1.48V PWM OUTPUT OUTPUT 1.64V SCP tSCP SCP Comp 2.53V VDD LOCKOUT FREE 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 16 V1.0 Advanced Analog Technology, Inc. AAT1341 PACKAGE DIMENSION 16-PIN SOP – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 10 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 PACKAGE DIMENSION (CONT.) – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 11 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 PACKAGE DIMENSION (CONT.) SYMBOLS A A1 A2 b C D E E1 e L y θ NOTE: 1. 2. 3. DIMENSIONS IN MILLIMETERS MIN TYP MAX 1.47 1.60 1.73 0.10 -----0.25 -----1.45 -----0.33 0.41 0.51 0.19 0.20 0.25 9.80 9.91 10.01 5.79 5.99 6.20 3.81 3.91 3.99 -----1.27 -----0.38 0.71 1.27 ----------0.076 o -----0 8o DEMINSIONS IN INCHES MIN TYP MAX 0.058 0.063 0.068 0.004 -----0.010 -----0.057 -----0.013 0.016 0.020 0.0075 0.0080 0.0098 0.386 0.390 0.394 0.228 0.236 0.244 0.150 0.154 0.157 -----0.050 -----0.015 0.028 0.050 ---------0.003 o -----0 8o 4. 5. 6. 7. CONTROLLING DIMENSION: INCH LEAD FRAME MATERIAL: COPPER 194 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 SAHLL NOT EXCEED 0.010” [0.25 MILLIMETERS] PER SIDE. 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]. TOLERANCE: ± 0.010” [0.25 MILLIMETERS] UNLESS OTHERWISE SPECIFIED. OTHERWISE DIMENSION FOLLOW ACCEPTABLE SPEC. REFERENCE DOCUMENT: JEDEC SPEC MS-012 – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 12 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 TAPE AND REEL – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 13 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 TAPE AND REEL (CONT.) X.XXX X X.XXX X.XX X.X X ± 0.0025 ± 0.006 ± 0.025 ± 0.10 ± 0.25 UNIT: MILLIMETERS NOTE: 1. 2. 3. 4. 5. 6. 10 SPROCKET HOLE PITCH CUMULATIVE TOLERANCE ± 0.2. CAMBER NOT TO EXCEED 1 MILLIMETER IN 100 MILLIMETERS. MATERIAL: 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. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 14 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 PART MARKING SOP16 TOP MARKING AAT1341 BXXXXX.X YYWW TAIWAN LOT NO. DATE CODE (0416 = 16th week of Year 2004) NOTE: SOP16 HAS NO BACK MARKING. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 15 of 16 V1.0 Advanced Analog Technology, Inc. AAT1341 ORDERING INFORMATION – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 16 of 16 V1.0