Advanced Analog Technology, Inc. AAT1341 Details are subject to change without notice 2-CHANNEL SWITCHING REGULATOR FEATURES GENERAL DESCRIPTION z Complete PWM Power Control Circuitry 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 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. 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 SOP-16PACKAGE – 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 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 I/O DESCRIPTION I External Timing Capacitance I I I I I O External Timing Resistance 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 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 CONDITION CHARACTERISTICS Supply Voltage, VDD Input Voltage, IE1, IE2 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 f OSC 10 800 kHz Output Current, I OUT1 , I OUT 2 IO - 100 mA Operating Free-Air Temperature TC − 20 85 Output Voltage 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 f OSC Frequency Frequency Changes with VDD f ∆V UNDER VOLTAGE PROTECTION PARAMETER Upper Threshold Voltage VUPH Lower Threshold Voltage Hysteresis ( VUPH – VUPL ) VUPL VHYS TEST CONDITION C OSC = 220pF, R OSC = 10kΩ VDD = 4.0V to 14.0V, TC = 25 oC C OSC = 220pF, R OSC =10 kΩ TEST CONDITION TC = 25 oC MIN TYP MAX UNIT 320 400 480 kHz - 1 - % MIN TYP MAX UNIT - 2.90 - V o - 2.53 - V o - 0.37 - V TC = 25 C TC = 25 C SHORT CIRCUIT PROTECTION CONTROL PARAMETER TEST CONDITION MIN TYP MAX UNIT 0.90 1.05 1.20 V Input Threshold Voltage Vr1 Short-Circuit Detect 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 VLT - 50 30 100 100 mV mV CH1, CH2 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 VREF Reference Voltage Input Voltage Regulation VRI Output 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 I REF = −1mA , TC = 25 oC I REF = −1mA , VDD = 4.0V to 14.0V I REF = −0.1mA to − 3.0 mA TEST CONDITION TYP MAX UNIT 2.4 2.5 2.6 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, Unity Gain MIN 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 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 Input Threshold Voltage (DTC) Latch Input Voltage Latch Mode Source Current OUTPUT STAGE PARAMETER TEST CONDITION VDTC = 2.0V MIN TYP MAX UNIT - 0.1 1.0 Vd 0 Duty = 0%, f OSC = 10kHz 1.79 1.97 2.15 Vd100 Duty = 100%, f OSC = 10kHz 1.32 1.48 1.64 VDTC I DTC = 40µA 2.28 2.48 - V I DTC DTC1, DTC2=0V − 560 − 200 - µA SYMBOL VSAT Saturation Voltage I LEAK Leakage Current OPERATING CURRENT PARAMETER Supply Current TEST CONDITION MIN I O = 75mA（CH1, CH2） VO =14.0V - TEST CONDITION MIN µA V TYP MAX UNIT 0.8 1.2 - 5.0 V µA TYP MAX UNIT I DD−OFF Output “OFF” State - 1.3 1.8 mA I DD−ON R OSC = 10kΩ - 1.6 2.3 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 OUT1 SCP Comp Err-Amp PWM GND UVC NE2 OUT2 IE2 Err-Amp OE2 PWM V REF Ct UVC DTC1 OSC Rt V REF UVC UVC DTC2 LATCH UVLO V REF VREF VDD LATCH V DD SCP SCP V REF UVC – 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 Optional Circuit: Charge Pump Circuit VDD R12 R13 R11 VP3 VDD Q1 OUT1 NE1 VN1 D4 VN1 R5 D1 OE1 L1 C1 R1 D3 C8 Inverting Output C9 C7 IE1 R2 VREF VP2 R3 R4 VDD AAT1341 VDD VDD L2 R16 VP2 OUT2 Q3 D2 R17 NE2 VREF C10 Q4 R6 Step Up Output R18 OE2 R14 Q2 C2 IE2 R15 VREF C4 Ct R7 R9 C5 DTC1 Rt DTC2 R8 GND Ct R10 SCP Rt 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 Note: LOCKOUT FREE 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 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 NOTE: 1. 2. 3. 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 ± 0.0025 X.XXX ± 0.006 X.XX ± 0.025 X.X ± 0.10 X ± 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