NJW4132 Switching Regulator IC for Boost Converter Current Mode Control w/ 45V/1.75A MOSFET GENERAL DESCRIPTION ■ PACKAGE OUTLINE The NJW4132 is a boost converter with 45V/1.75A MOSFET. It corresponds to high oscillating frequency, and Low ESR Output Capacitor (MLCC) within wide input range from 4.5V to 40V. Therefore, the NJW4132 can realize downsizing of applications with a few external parts so that adopts current mode control. Also, it has a soft start function, external clock synchronization, over current protection and thermal shutdown circuit. It is suitable for boost application to a Car Accessory, Office Automation Equipment, Industrial Instrument and so on. NJW4132U2 FEATURES Current Mode Control External Clock Synchronization Wide Operating Voltage Range 4.5V to 40V Switching Current 1.75A min. PWM Control Built-in Compensation Circuit Correspond to Ceramic Capacitor (MLCC) Oscillating Frequency 300kHz typ. (A ver.) 700kHz typ. (B ver.) Soft Start Function 10ms typ. UVLO (Under Voltage Lockout) Over Current Protection (Hiccup type) Thermal Shutdown Protection Standby Function Package Outline NJW4132U2 : SOT-89-5 PRODUCT CLASSIFICATION Version Oscillation Frequency Package NJW4132U2-A A 300kHz typ. SOT-89-5 NJW4132U2-B B 700kHz typ. SOT-89-5 Part Number Ver.2013-04-16 Operating Temperature Range General Spec. -40°C to +85°C General Spec. -40°C to +85°C -1- NJW4132 PIN CONFIGURATION 5 (2) 4 PIN FUNCTION 1. SW 2. GND 3. IN4. EN/SYNC 5. V+ 1 2 3 NJW4132U2 BLOCK DIAGRAM V+ SW UVLO TSD EN/SYNC Enable (Standby) High: ON Low : OFF(Standby) 100kΩ SYNC S Q OSC Buffer R Low Frequency Control PWM INER⋅AMP Soft Start Vref OCP CURRENT SENSE 1V SLOPE COMP. GND -2- Ver.2013-04-16 NJW4132 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Supply Voltage V+ SW pin Voltage VSW IN- pin Voltage VINEN/SYNC pin Voltage VEN/SYNC (Ta=25°C) MAXIMUM RATINGS UNIT +45 V +45 V -0.3 to +6 V +45 V SOT-89-5 625 (*1) Power Dissipation PD mW 2,400 (*2) Junction Temperature Range Tj -40 to +150 °C Operating Temperature Range Topr -40 to +85 °C Storage Temperature Range Tstg -40 to +150 °C (*1): Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm2) (*2): Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard, 4Layers) (For 4Layers: Applying 74.2×74.2mm inner Cu area and a thermal via hall to a board based on JEDEC standard JESD51-5) RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL Supply Voltage V+ External Clock Input Range fSYNC A version B version Ver.2013-04-16 MIN. 4.5 TYP. – MAX. 40 UNIT V 290 690 – – 500 1,000 kHz -3- NJW4132 (Unless otherwise noted, V+=VEN./SYNC=12V, Ta=25°C) ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Under Voltage Lockout Block ON Threshold Voltage OFF Threshold Voltage Hysteresis Voltage VT_ON VT_OFF VHYS TSS Soft Start Block Soft Start Time TEST CONDITION MIN. TYP. MAX. UNIT V+= L → H V+= H → L 4.2 4.1 70 4.35 4.25 100 4.5 4.4 – V V mV VB=0.95V 5 10 15 ms 270 630 – – 300 700 50 117 330 770 – – kHz kHz kHz kHz Oscillator Block Oscillation Frequency Oscillation Frequency OCP operates Oscillation Frequency deviation (Supply voltage) Oscillation Frequency deviation (Temperature) Error Amplifier Block Reference Voltage Input Bias Current PWM Comparate Block Maximum Duty Cycle Minimum ON Time1 (Use Built-in Oscillator) Minimum ON Time2 (Use Ext CLK) fOSC fOSC_LIM fDV V+=4.5V to 40V – 1 – % fDT Ta=-40°C to +85°C – 5 – % -1.0% -0.1 1.0 – +1.0% +0.1 V µA 85 – – – – 90 300 110 220 90 – 425 155 355 125 % ns ns ns ns – 42 – ms – 1.75 – 0.4 2.1 – 0.65 2.25 1 Ω A µA VB IB MAXDUTY tON-min1 tON-min2 OCP Block COOL DOWN Time tCOOL Output Block Output ON Resistance Switching Current Limit SW Leak Current RON ILIM ILEAK -4- A version, VIN-=0.9V B version, VIN-=0.9V A version, VIN-=0.4V B version, VIN-=0.4V VIN-=0.9V A version B version A version, fSYNC=400kHz B version, fSYNC=800kHz ISW=1A VEN/SYNC=0V, VSW=45V Ver.2013-04-16 NJW4132 (Unless otherwise noted, V+=VEN/SYNC=12V, Ta=25°C) ELECTRICAL CHARACTERISTICS PARAMETER Standby Control Block ON Control Voltage OFF Control Voltage Input Bias Current (EN/SYNC pin) SYMBOL VON VOFF IEN TEST CONDITION VEN/SYNC= L → H VEN/SYNC= H → L VEN/SYNC=12V MIN. TYP. MAX. UNIT 1.6 0 – – V+ 0.5 V V – 165 300 µA – 2.1 2.65 mA – 2.5 3.0 mA – – 1 µA General Characteristics Quiescent Current Standby Current Ver.2013-04-16 IDD IDD_STB A version, RL=no load, VIN-=0.9V B version, RL=no load, VIN-=0.9V VEN/SYNC=0V -5- NJW4132 TYPICAL APPLICATIONS Boost Converter V IN L CIN SBD COUT V OUT CFB R2 RFB V+ SW NJW4132 EN/ SYNC GND R1 IN- EN/SYNC High: ON Low: OFF (Standby) Buck-Boost (SEPIC) Converter V IN L1 CIN C1 SBD COUT V OUT CFB R2 RFB SW V+ NJW4132 EN/ SYNC GND L2 R1 IN- EN/SYNC High: ON Low: OFF (Standby) -6- Ver.2013-04-16 NJW4132 TYPICAL CHARACTERISTICS Oscillation Frequency vs. Supply Voltage (A ver., VIN-=0.9V, Ta=25°C) Oscillation Frequency vs. Supply Voltage (B ver., VIN-=0.9V, Ta=25°C) 720 Oscillation Frequnecny fOSC (kHz) Oscillation Frequnecny fOSC (kHz) 320 315 310 305 300 295 290 285 280 715 710 705 700 695 690 685 680 0 10 20 30 + Supply Voltage V (V) 40 0 Quiescent Current vs. Supply Voltage (A ver., RL=no load, VIN-=0.9V, Ta=25°C) 40 Quiescent Current vs. Supply Voltage (B ver., RL=no load, VIN-=0.9V, Ta=25°C) 3 Quiescent Current IDD (mA) 3 Quiescent Current IDD (mA) 10 20 30 + Supply Voltage V (V) 2.5 2 1.5 1 0.5 0 2.5 2 1.5 1 0.5 0 0 10 20 30 + Supply Voltage V (V) 40 0 10 20 30 + Supply Voltage V (V) 40 Reference Voltage vs. Supply Voltage (Ta=25°C) Reference Voltage VB (V) 1.01 1.005 1 0.995 0.99 0 Ver.2013-04-16 10 20 30 + Supply Voltage V (V) 40 -7- NJW4132 TYPICAL CHARACTERISTICS Oscillation Frequency vs Temperature + (A ver., V =12V, VIN-=0.9V) 780 Oscillation Frequency fosc (kHz) Oscillation Frequency fosc (kHz) 330 320 310 300 290 280 270 760 740 720 700 680 660 640 620 -50 -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Reference Voltage vs. Temperature + (V =12V) Switching Current Limit ILIM (A) Reference Voltage VB (V) 2.8 1.005 1 0.995 2.6 2.4 + V =4.5V, 12V, 40V 2.2 2 1.8 1.6 1.4 0.99 -50 -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Output ON Resistance vs. Temperature (ISW=1A) -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Under Voltage Lockout Voltage vs. Temperature 4.5 0.8 4.45 0.7 0.6 + V =4.5V, 12V, 40V 0.5 0.4 0.3 0.2 Threshold Voltage (V) Output ON Resistance RON (Ω) -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Switching Current Limit vs. Temperature 1.01 VT_ON 4.4 4.35 4.3 VT_OFF 4.25 4.2 4.15 0.1 4.1 0 -50 -8- Oscillation Frequency vs Temperature + (B ver., V =12V, VIN-=0.9V) -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Ver.2013-04-16 NJW4132 TYPICAL CHARACTERISTICS Soft Start Time vs. Temperature + (V =12V, VB=0.95V) 15 Soft Start Time Tss (ms) 14 13 12 11 10 9 8 7 6 5 -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Minimum ON Time1 vs. Temperature + (A ver., V =12V) Minimum ON Time1 vs. Temperature + (B ver., V =12V) 180 Minimum ON Time1 tON-min1 (ns) Minimum ON Time1 tON-min1 (ns) 450 400 350 300 250 200 150 140 120 100 80 60 -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) -50 Maximum Duty Cycle vs. Temperature + (A ver., V =12V, VIN-=0.9V) 98 96 94 92 90 88 86 84 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Maximum Duty Cycle vs. Temperature + (B ver., V =12V, VIN-=0.9V) 100 Maximum Duty Cycle MAXDUTY (%) 100 Maximum Duty Cycle MAXDUTY (%) 160 98 96 94 92 90 88 86 84 -50 Ver.2013-04-16 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) -9- NJW4132 TYPICAL CHARACTERISTICS Quiescent Current vs. Temperature (A ver., RL=no load, VIN-=0.9V) 3 2.5 + V =12V, 40V 2 + V =4.5V 1.5 1 0.5 Quiescent Current IDD (mA) Quiescent Current IDD (mA) 3 -50 + V =4.5V, 12V, 40V 2 1.5 1 0.5 -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Standby Current vs. Temperature (VEN/SYNC=0V) 0.9 0.8 0.7 0.6 0.5 + V =40V + V =12V + V =4.5V 0.4 0.3 0.2 0.1 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Switching Leak Current vs. Temperature + (V =12V, VEN/SYNC=0V, VSW=45V) 3 Switching Leak Current ILEAK (µA) 1 Standby Current IDD_STB (µA) 2.5 0 0 2.5 2 1.5 1 0.5 0 0 -50 - 10 - Quiescent Current vs. Temperature (B ver., RL=no load, VIN-=0.9V) -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Ver.2013-04-16 NJW4132 MEMO [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. Ver.2013-04-16 - 11 -