AIC1630ACN

AIC1630A HIGH-EFFICIENCY STEP-UP DC/DC CONVERTER CONTROLLER SPEC NO: DS-1630A-04 FEATURES Default +5V Output Voltage. Adjustable Output Voltage with Two Resistors. Power-Saving Shutdown Mode (7µA typical). 120KHz Switching Rate. On-Chip Low Battery Detector. DESCRIPTION The AIC1630A is a DC-DC converter designed to drive an external power switch for more flexibility, especially in higher voltage and larger power applications. Typically six components are required to set up a step up configuration easily achieving efficiency beyond 80%. A few more components are required to set up a step down configuration delivering 4A load current with 83% typical efficiency, 86% at 2A load, and 300µA quiescent current. The output voltage can be internally set to 5V or externally set to an arbitrary value below breakdown voltage of the power switch. Logiccontrolled shutdown mode is provided for power saving. The low battery detector can be also configured as a linear regulator. 120KHz switching rate reduces the inductor size. Inductors of 25µH to 50µH inductance are recommended for most applications. APPLICATIONS Palmtop & Notebook Computers. Battery Charger Supply. Cellular Telephone. LCD Contrast Supply. Flash Memory Programmer. Battery Backup Supplies. Portable Instruments. TYPICAL APPLICATION CIRCUIT +VIN 50µH 100Ω 100µF R3 L C1 + SD VIN EXT 2SC4672 100µF C3 LOAD Q1 1 GND VOUT LBI LBO FB EXT INT R2 R1 +VOUT D1 1N5819 5nF C2 270Ω R4 AIC1630A Note : VIN ≥ 1.8V , VOUT ≤ 7V High Efficiency Step-Up DC/DC Converter ORDERING INFORMATION AIC1630A XX PACKAGE TYPE N: PLASTIC DIP S: SMALL OUTLINE TEMPERATURE RANGE C=0°C~70°C ORDER NUMBER AIC1630ACN (PLASTIC DIP) AIC1630ACS (PLASTIC SO) PIN CONFIGURATION TOP VIEW SD 1 VIN EXT 2 3 8 VOUT 7 LBI 6 LBO 5 FB GND 4 ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 1 AIC1630A HIGH-EFFICIENCY STEP-UP DC/DC CONVERTER CONTROLLER SPEC NO: DS-1630A-04 ABSOLUTE MAXIMUM RATINGS Supply Voltage ………………………..……………………………………………… 7.0V DC Voltage Applied On All Other Pins ………………………………………………. 7.0V Operating Temperature Range ………………………………………………… 0°C~70°C Storage Temperature Range ……………………………………………… -65°C ~150°C TEST CIRCUIT Refer to Typical Application Circuit. ELECTRICAL CHARACTERISTICS PARAMETER Input Voltage Default Output Voltage Switch Off Current Shutdown Mode Current Recovery Time from Shutdown Efficiency Line Regulation Load Regulation Oscillator Frequency LBI Pin Trip Point FB Threshold Voltage EXT Pin Driving Capability IL=200mA (VIN=3.0V, Ta=25°C, unless otherwise specified.) MIN. 1.8 4.8 5 105 7 TEST CONDITIONS TYP. MAX. 7 5.2 140 15 UNIT V V µA µA mS % %VOUT %VOUT VIN=2.5V, IL=200mA IL=300mA Fig. 1 in Appl. Examples VIN=2.2~3.3V VOUT=5V, IL=100mA IL=10mA~500mA VOUT=5V 90 1.17 0.598 Pin 8=5V, Pin 3= 0.85V Sourcing Sinking VIN=2V 0.4 85 0.6 2.5 120 1.22 0.617 80 50 45 10 10 150 1.27 0.636 KHz V V mA mA Ω nA/Pin nA/Pin LBO “ON Resistance” Input Pin Bias Current Output Pin Leakage ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 2 AIC1630A HIGH-EFFICIENCY STEP-UP DC/DC CONVERTER CONTROLLER SPEC NO: DS-1630A-04 TYPICAL PERFORMANCE CHARACTERISTICS Ext Pin Sourcing Capability 85 80 70 90 Ext Pin Sourcing Capability vs Temperature VOUT=5V 80 VOUT=5V (mA) 60 50 40 IEXT (mA) Ta=25°C 70 60 IEXT Ext Pin Voltage=0.85V 50 VOUT=3V 30 20 0.6 0.8 1 40 VOUT=3V 0 10 20 30 40 50 60 70 80 30 EXT Pin Voltage (V) 1.2 1.4 1.6 1.8 2 Temperature (°C) Ext Pin Sinking Capability 85 80 75 70 55 53 51 49 Ext Pin Sinking Capability vs Temperature Ta=25°C VOUT=5V Ext Pin Voltge=0.85V VOUT=5V IEXT (mA) 65 60 55 50 45 40 35 0.6 0.8 IEXT (mA) 47 45 43 41 39 37 VOUT=3V VOUT=3V 1 1.2 1.4 1.6 1.8 2.0 35 0 10 20 30 40 50 60 70 80 EXT Pin Voltage (V) Temperature(°C) Switch off Supply Current vs Input Voltage 110 105 100 120 Switch Off Supply Current vs Temperature 115 Ta=25°C 110 IS (µA) 95 90 85 80 75 IS (µA) VIN=3V 105 100 95 90 1.5 2 2.5 3 3.5 4 4.5 5 0 10 20 30 40 50 60 70 80 VIN (V) Temperature (°C) ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 3 AIC1630A HIGH-EFFICIENCY STEP-UP DC/DC CONVERTER CONTROLLER SPEC NO: DS-1630A-04 TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED) Shutdown Mode Supply Current vs Input Voltage 8.2 9.4 Shutdown Mode Supply Current vs Temperature 8 Ta=25°C 7.8 9 VIN=3V 8.6 IS (µA) 7.6 IS (µA) 1 1.5 2 2.5 3 3.5 4 4.5 5 8.2 7.4 7.8 7.2 7.4 7 7 0 10 20 30 40 50 60 70 80 VIN (V) Temperature (°C) Oscillator Frequency vs Input Voltage 130 120 123 Oscillator Frequency vs Temperature 122 (KHz) VIN=3V 110 100 90 80 70 60 1 1.5 2 2.5 3 3.5 Ta=25°C Frequency Frequency (KHz) 121 120 119 118 117 4 4.5 5 0 10 20 VIN (V) Temperature (°C) 30 40 50 60 70 80 BLOCK DIAGRAM SD 100mV VIN FB EXT= LOW OSC + Shutdow n VOUT LBI 1 .22V + LBO EXT + 0.628V FB EXT= HIGH GND + - FB 100mV ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 4 AIC1630A HIGH-EFFICIENCY STEP-UP DC/DC CONVERTER CONTROLLER SPEC NO: DS-1630A-04 PIN DESCRIPTION PIN 1: SD - The AIC1630A goes in shutdown mode and consumes less than 10µ A when SD pin is pulled to ground and it goes in normal operating mode when the SD pin is pulled to a positive voltage above 100mV. - Input supply. where R2= R1=Resistor connected between FB pin and VOUT pin. Resistor connected between FB pin and ground. VOUT=Output voltage to be set. PIN 6: LBO - Open drain output of the battery low detector, with 45Ω “ON resistance” at VIN=2V. It is pulled low when the voltage on LBI pin is below 1.22V. PIN 7: LBI - The noninverting input of the battery low detector, of which the inverting input is internally connects to 1.22V voltage reference. PIN 2: VIN PIN 3: EXT - Push-pull drive output to drive external power switch. PIN 4: GND - Ground. PIN 5: FB - Output voltage can either be internally set to 5 volt by grounding FB pin, or be externally set to an arbitrary voltage by applying to FB pin the divider voltage of two divider resistors. VOUT voltage is given following equation: R1 VOUT = -1 R2 0.628 by the PIN 8: VOUT- The output voltage feedbacks to the IC through this pin. If output voltage was externally set, the VOUT pin can be tied to any low impedance node with voltage between the external power switch threshold and 7V APPLICATION EXAMPLES 95 VOUT (+5V) VIN 100Ω 90 85 80 100µF + C1 L 1N5819 50µH SD VIN VOUT LBI LBO FB AIC1630A Efficiency (% ) R3 V IN= 4.5V V IN= 3V V IN= 3.3V V IN= 2.2V 75 70 65 60 5nF C2 D1 100µF LOAD 2SC4672 Q1 EXT GND V IN= 2V + C3 270Ω R4 0 100 200 300 400 500 600 700 800 Load Current (mA ) Fig. 1 5V Output Step-Up Converter ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 5 AIC1630A HIGH-EFFICIENCY STEP-UP DC/DC CONVERTER CONTROLLER SPEC NO: DS-1630A-04 APPLICATION EXAMPLES VOUT (+12V) 100Ω (CONTINUED) 85 VIN VIN=5V R3 C1 SD 220µF L 47µH D2 1N4148 2SC4672 Q1 1K R4 GND FB 10K R2 70 0 30 60 90 120 150 180 VOUT 180K LBI LBO R1 Efficiency (%) + VIN=4.5V 80 VIN=3.3V VIN=2.75V VIN EXT 1N5819 D1 LOAD 100µF OS-CON 75 + C3 VIN=2.25V 210 240 270 AIC1630A Load Current (mA) Note : VIN ≥ 2.2V Fig. 2 12V Output Step-Up Converter for Flash Memory 95 VOUT (+36V) VS(+3/5V) 90 V IN = 2 0 V V IN = 1 6 V 1M R1 C1 L 220µH Efficiency (% ) VIN + 47µF SD VIN EXT VOUT LBI LBO FB 85 V IN = 1 2 V V IN = 8 V V IN = 6 V 80 1N5819 D1 2SC4672 Q1 LOAD + C3 33µF 120Ω R3 GND 75 AIC1630A 17.8K R2 70 0 10 V IN = 5 V 20 30 40 50 V s= 5 V 60 70 Load Current (mA ) Fig. 3 36V Output Step-Up Converter for Color LCD 88 VIN D1 1N5819 VOUT (-24V) C3 L 150µH VS (+3/5V) C6 5nF 86 84 V IN = 1 5 V V IN = 1 0 V V IN = 2 0 V V IN = 5 V + 10µF C1 SD VIN VOUT LBI LBO FB Ef ficiency (% ) 90K R1 82 80 78 76 74 + 0.1µF C2 47µF 2SC4672 Q1 EXT 1.2K R3 C5 5nF GND C4 + 47µF 1N5819 LOAD 1N5819 D2 D3 AIC1630A 2.4K R2 72 70 0 5 10 15 20 25 30 V s= 5 V 35 40 45 Load Current (m A ) Fig. 4 -24V Output Inverting Converter for LCD ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 6 AIC1630A HIGH-EFFICIENCY STEP-UP DC/DC CONVERTER CONTROLLER SPEC NO: DS-1630A-04 APPLICATION EXAMPLES VIN 150µH D1 1N5819 VOUT (-24V) C5 L C3 10µF 2SC4672 Q1 VS (+3/5V) + 220µF (CONTINUED) 78 76 74 72 Vs= 3V V IN= 5V V IN= 4V V IN= 3V + C1 150Ω SD VIN EXT R3 D4 GND VOUT 90K LBI LBO FB 2.4K R1 5nF D2 10µF C2 + 120Ω R4 Efficiency (% ) 70 68 66 64 62 60 58 56 0 5 10 15 20 25 C4 + 33µF 1N5819 LOAD 1N5819 D3 AIC1630A R2 V IN= 2V 1N4148 Load Current (mA) Fig. 5 2V Input 20mA Load -24V Output Inverting Converter for LCD VOUT (+12V) 95 VIN C3 L D1 1N5819 50µH + 220µF VS (+3/5V) + 10µF C1 SD VOUT LBI LBO FB 10K R2 180K R1 90 V IN= 20V Efficiency (% ) V IN= 16V V IN= 12V V IN= 8V V IN= 6V 85 D2 1N5819 47µF C2 2SC4672 Q1 VOUT (-12V) + 10µF C5 + VIN 120Ω R4 430Ω R3 EXT GND 80 47µF + D3 1N5819 C4 AIC1630A D4 1N4148 75 V IN= 5V 70 0 10 20 30 40 50 Vs= 5V 60 70 Load Current (mA) Fig. 6 12V Dual Output Converter for computer for computer Interfacing SI9430DY MBR360 Q2 V IN + 1 00 µF C1 5.1V ZD1 R3 100K 9014 Q1 R4 270Ω L 50 µH D1 + C2 220 µF 91 V OUT (+5V) 89 87 VIN= 12V V IN= 8V + 10 µF C3 680P R5 36K Quicient Current = 300µA C4 EXT GND LBO FB R2 6.4K SD VIN MPSA13 VOUT LBI R1 45K L O A D Efficiency (% ) 85 83 81 79 77 75 0 VIN= 16V VIN= 20V AIC1630A 1 1.5 2 2.2 2.5 3 3.5 4 Load Current (A ) Fig. 7 5V Output Step-Down Converter -1 ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 7 AIC1630A HIGH-EFFICIENCY STEP-UP DC/DC CONVERTER CONTROLLER SPEC NO: DS-1630A-04 APPLICATION EXAMPLES SI9430DY MBR360 VIN L (CONTINUED) VOUT (+5V) C2 + R3 100K Q1 5.1V 9014 ZD1 100µF C1 Q3 1N4148 D2 9014 270Ω R4 Q2 50µH D1 220µF + 90 V IN= 8V Efficiency (% ) + 10µF C4 C3 V IN= 12V SD VIN VOUT LBI LBO FB R2 6.4K R1 45K L O A D 85 V IN= 16V MPSA13 680P R5 36K Quicient Current = 300µA EXT GND V IN= 20V 80 0 AIC1630A 1 Load Current (A) 2 3 4 5 Fig. 8 5V Output Step-Down Converter -2 2A FUSE 50µH L1 1N5819 D2 240K BATTERY PACK R3 + C2 220 R10 R9 + 100µF C4 +VIN (VIN