Advanced Analog Technology, Inc. AAT1118 Details are subject to change without notice. ADJUSTABLE TRIPLE-CHANNEL TFT LCD DC-DC CONVERTER Features General Description Built in 1.6A, 0.2Ω Switching NMOS The AAT1118 is an adjustable triple-channel TFT Fault and Thermal Protection LCD DC-DC converter that provides one current Internal Soft-Start Function mode PWM, one positive charge pump and one Internal Power Up Sequencing negative charge pump. Built-in functions include Dual Adjustable Charge Pump Output soft-start and power up sequencing. When power is Positive Output to 40V Negative Output to − 40V Power Good Output TSSOP-16 Package turned on, soft-start avoids inrush current. Power up sequencing feature provides compensation for LCD panel to maintain a smooth voltage during a turn-on cycle. The DC-DC converter consists of an on-chip voltage reference, error amplifier, current sense, Pin Configuration (Top View) pulse width modulation controller, under-voltage lockout protection, thermal detect, soft-start, and fault protection circuit. When the two charge pumps are in operation, the output voltage would be doubled and the generated VP3 and VP2 could switch on or off TFT gate. With the minimal external components, the AAT1118 offers a simple and economical solution for TFT LCD power. (TSSOP-16 Package) – – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 1 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 Ordering Information DEVICE TYPE PART NUMBER PACKAGE PACKING TEMP. RANGE AAT1118 AAT1118-T1-T T1:TSSOP16 T: Tape and reel -40 °C to +85 °C MARKING AAT1118 XXXXXX MARKING DESCRIPTION 1. Part Name 2. Lot No. (6~9 digits) NOTE: All AAT Products are Lead Free and Halogen Free. Description PIN NO. NAME I/O DESCRIPTION 1 PGO O HV Switch Output 2 IN1 I Inverting Input Pin of PWM Error Amplifier 3 EO I Output Pin of PWM Error Amplifier 4 VDD - Power Supply 5 GND - Ground 6 VREF O Reference Voltage Output 7 IN3 I Charge Pump Channel 3 Feedback Input 8 IN2 I Charge Pump Channel 2 Feedback Input 9 SHDN I Shutdown Control Pin; High for Enable 10 OUT2 O Charge Pump Channel 2 Output 11 VDD1 - High Voltage Power Supply 12 OUT3 O Charge Pump Channel 3 Output 13 VDD2 - High Voltage Power Supply 14 GND2 - Ground 15 SW O Switch Pin 16 GND1 - SW MOS Ground – – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 2 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 Absolute Maximum Ratings PARAMETER SYMBOL VALUE UNIT VDD to GND VDD 7 V SW to GND VSW 18 V VDD1 , VDD2 to GND Input Voltage 1 (IN1, IN2, IN3, SHDN) VDDH V I1 16 VDD +0.3 V V Output Voltage 1 (EO, VREF ) VO1 VDD +0.3 V Output Voltage 2 (OUT2, OUT3, SW, PGO) VO2 VDDH +0.3 V Operating Free-Air Temperature Range TC − 40 to + 85 C Tstorage − 45 to + 125 C Pd 750 Storage Temperature Range Power Dissipation – mW – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 3 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 Electrical Characteristics, VDD= 3.3V, VDDH= 10V Operating Power PARAMETER Input Supply Voltage Range SYMBOL VDD VDD Under Voltage Lockout VUVLO Regulated Output Voltage Range VP1 Quiescent Current I VDD Shutdown Current I SHDN TEST CONDITION Falling Rising MIN TYP MAX UNIT 5.5 V 2.6 2.1 2.2 2.3 V 2.5 V 2.3 2.4 6 14 V VIN1 =1.1V, switching 0.5 3 0.8 6 mA mA VSHDN =GND 0.1 10.0 µA VIN1 =1.3V, not switching Thermal Shutdown 160 Reference Voltage PARAMETER Reference Voltage SYMBOL TEST CONDITION VREF IVref = 100µA IVref = 100µA, VRI VDD =2.5V~5V Line Regulation VRO Load Regulation IVref = 0~100µA C MIN TYP MAX UNIT 1.238 1.250 1.262 V - 2 5 mV - 1 5 mV EA (Error Amplifier) PARAMETER SYMBOL TEST CONDITION Feedback Voltage VIN1 Level to VEO =1.24V Input Bias Current I B1 VIN1=1.24V produce Feedback-Voltage Line Regulation VRI Level to produce VEO =1.24V 2.6V < VDD < 5.5V Transconductance gm ΔI=5µA Voltage Gain AV Fault Detect Trigger Voltage VFI – MIN TYP MAX UNIT 1.238 1.250 1.262 V 0 40 nA 0.05 0.15 % /V 105 240 µA /V 70 1,500 1.07 1.10 V /V 1.14 V – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 4 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 Electrical Characteristics, VDD= 3.3V, VDDH= 10V Oscillator PARAMETER SYMBOL TEST CONDITION MIN TYP MAX UNIT Oscillation Frequency f OSC 1,100 1,320 1,600 kHz Maximum Duty Cycle D MAX 79 85 92 % MIN TYP MAX UNIT 1.1 1.6 2.1 N-Channel Switch PARAMETER Current Limit On-Resistance Leakage Current SYMBOL TEST CONDITION I LIM R ON I SW =1.2A 0.28 0.50 A Ω I SWOFF VSW =12V 0.01 20.00 µA Control Inputs Characteristics PARAMETER SYMBOL TEST CONDITION MIN TYP Input Low Voltage VIL Input High Voltage VIH Hysteresis VHYS 0.1 VDD I PH 0.001 SHDN Pull Up Current – MAX 0.3 VDD 0.7 VDD V V V 1.000 – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 5 of 14 UNIT V 2.0011 µA Advanced Analog Technology, Inc. AAT1118 Electrical Characteristics, VDD= 3.3V, VDDH= 10V Soft Start & Fault Detect Time PARAMETER SYMBOL TEST CONDITION MIN TYP MAX UNIT Channel 1 Soft Start Time t SS1 14 ms Channel 2 Soft Start Time t SS2 3.5 ms Channel 3 Soft Start Time t SS3 3.5 ms During Fault Protect Trigger Time t FP 83 ms IN1 Fault Protection Voltage VF1 1.05 1.10 1.15 V IN2 Fault Protection Voltage VF2 0.08 0.13 0.18 V IN3 Fault Protection Voltage VF3 1.05 1.10 1.15 V – – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 6 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 Electrical Characteristics, VDD= 3.3V, VDDH= 10V Charge Pump Regulator Characteristics PARAMETER VDD1 Input Supply Range VDD2 Input Supply Range SYMBOL TEST CONDITION MIN TYP MAX UNIT VDD1 6 15 V VDD2 6 15 V IN2 Threshold Voltage IN2 − 50 0 50 mV IN3 Threshold Voltage IN3 1.20 1.25 1.30 V IN2 Input Bias Current I B2 VIN2= − 0.05V − 50 50 nA IN3 Input Bias Current I B3 V IN3= − 1.5V − 50 50 nA 640 740 kHz R ONP2 3 20 Ω R ONN2 3 20 Ω R ONP3 3 20 Ω 3 20 Ω 30 mA Charge Pump Frequency f OSCP 540 OUT2 Switch R-on OUT3 Switch R-on R Continuous Output Current ONN3 I OUT – – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 7 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 BLOCK DIAGRAM AAT1118 VDD EO SHDN Thermal SHDN SHDN Error Amplifier IN1 VREF SW Comparator Bandgap & Soft Start Control Logic 1.24v Driver PGO GND1 Clock Oscillator Slope Compensation ∑ Current sense OSC GND VDD2 VDD1 EN1 EN3 EN2 Power Up Sequence Fault Detect OUT3 OSC OSC OUT2 IN1 GND2 1.24v GND2 IN3 – IN2 – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 8 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 Typical Operating Characteristics (VIN = 3.3V, TC = +25°C, unless otherwise noted.) 10.04 100 10.02 95 10 9.98 90 9.96 85 9.94 9.92 80 9.9 75 9.88 70 9.86 65 9.84 0 100 200 300 400 500 600 0 700 800 100 200 300 400 500 90 100 85 95 90 80 85 75 80 70 75 65 70 60 65 0 100 200 300 400 0 500 50 100 150 200 250 300 350 35 40 -5.8 55 -5.85 50 45 -5.9 40 -5.95 35 30 -6 25 -6.05 0 5 10 15 20 25 30 35 40 20 0 – 5 10 15 20 25 30 – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 9 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 Typical Operating Characteristics (Continued) (VIN = 3.3V, TC = +25°C, unless otherwise noted.) 18.05 80 18 75 70 17.95 65 17.9 60 17.85 55 17.8 50 17.75 45 17.7 40 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 1.2 1.15 1.1 1.05 1 0.95 0.9 0.85 2.5 3 3.5 4 – 4.5 5 5.5 – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 10 of 14 V 2.0011 20 Advanced Analog Technology, Inc. AAT1118 Typical Operating Characteristics (Continued) (VIN = 3.3V, TC = +25°C, unless otherwise noted.) – – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 11 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 Application Circuit AAT1118 – – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 12 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 Timing Chart AAT1118 V DD SHDN 90% 9V V P1 0V V -8V P2 25V V 0V P3 14ms Max. 3.5ms 3.5ms PGO – – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 13 of 14 V 2.0011 Advanced Analog Technology, Inc. AAT1118 Package Dimension 16-Pin TSSOP Symbol A A1 A2 b C D E E1 e L y θ Dimensions In Millimeters Min TYP Max 1.05 1.10 1.20 0.05 0.10 0.15 -----1.00 1.05 0.20 0.25 0.28 -----0.127 -----4.900 5.075 5.100 6.2 6.4 6.6 4.3 4.4 4.5 -----0.65 -----0.5 0.6 0.7 ----------0.076 0˚ 4˚ 8˚ – Dimensions In Inches Min TYP Max 0.041 0.043 0.047 0.002 0.004 0.006 -----0.039 0.041 0.008 0.010 0.011 -----0.005 -----0.1930 0.1998 0.2000 0.244 0.252 0.260 0.170 0.173 0.177 -----0.026 -----0.020 0.024 0.028 ----------0.003 0˚ 4˚ 8˚ – 台灣類比科技股份有限公司 – Advanced Analog Technology, Inc. – Page 14 of 14 V 2.0011