APW38HC44AKI-TR

APW38HC42A/3A/4A/5A CMOS Current-Mode PWM Voltage Controller Features • • • • • • • • • • • Ultralow start-up current (25µA typical) Low operating current (2mA typical) Fast output rise/fall times : General Description The APW38HC4XA family are fixed frequency, high performance, current-mode PWM controller with 1.2 A drive current capability. Undervoltage lockout circuitry allows the APW38HC42A and APW38HC44A versions to start up at 14.5V and operate down to 9V, and the APW38HC43A and APW38HC45A versions start at 8.4V with operateion down to 7.6V. All versions operate up to 24V. The ultra low start-up current 25µA (typical), and operating current 2mA (typical) have been designed to improve the converter efficiency. High output driving capability up to 1.2A ensures the fast switching to minimize the switching losses. The APW38HC4XA features a trimmed and temperature compensated oscillator discharge current and bandgap reference. APW38HC4XA is available in both 8-pin plastic DIP and SOP packages. −15ns rise/10ns fall High output drive (1.2A peak current) CMOS outputs with rail-to-rail swing Current-mode operation up to 1MHz Trimmed 5V bandgap reference Pin-to-pin compatible with MIC38HC4X Trimmed oscillator discharge current UVLO with hysteresis Low cross-conduction currents Applications • • • Current-mode , Off-line , Switched-mode Power Supplies Current-mode , DC-to-DC converters Various converters ( step-down, step-up, flyback , forward, and synchronous FET) Pin Description COMP FB ISNS RT/CT 1 2 3 4 8 7 6 5 VREF VDD OUT GND Ordering and Marking Information APW 38HC4XA Lead Free Code Handling Code Temp. Range Package Code Package Code J : DIP - 8 K : SOP-8 Temp. Range C : 0 to 70 °C I : -40 to 85 ° C Handling Code TU : Tube TR : Tape & Reel Lead Free Code L : Lead Free Device Blank : Original Device X - 2/3/4/5 XXXXX - Date Code APW 384XA J : APW 38HC4XA XXXXX APW 38HC4XA X - 2/3/4/5 XXXXX - Date Code APW 384XA K : XXXXX ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright  ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 1 www.anpec.com.tw APW38HC42A/3A/4A/5A Selection Guide Duty Cycle 0~96% 0~50% Startup 8.4V Minimum Operating 7.6V APW38HC43A APW38HC45A Startup 14.5V Minimum Operating 9V APW38HC42A APW38HC44A Block Diagram VDD 5V Reference VREF UVLO RT/CT Oscillator OUT T Q FB 2.5V E. A. 2R R S Q R + + COMP GND ISNS Functional Pin Description Pin Name 1 2 3 4 5 6 7 8 Pin Number COMP FB ISNS RT/CT GND OUT VDD VREF Function Description Compensation: Connect external compensation network to modify the error amplifier output. Feedback (Input): Error amplifier input. Feedback is 2.5V at desired output voltage. Current Sense (Input): Current sense comparator input. Connect to current sensing resistor or current transformer. Timing Resistor/Timing Capacitor: Connect external RC network to select switching frequency. Ground: Combined analog and power ground. Power Output: Totem-pole output. Analog Supply (Input): Controller circuitry supply input. Return to analog ground (AGND). 5V Reference (Output): Connect external RC network. 2 www.anpec.com.tw Copyright  ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 APW38HC42A/3A/4A/5A Absolute Maximum Ratings Symbol VDD VISNS VFB TJ TSTG TSDR VESD Supply Voltage Current Sense Voltage Feedback Voltage Junction Temperature Range Storage Temperature Soldering Temperature Minimum ESD Rating Parameter Rating 24 -0.3 to 5.5 -0.3 to 5.5 300 -65 to 150 300,10 Seconds ±3 Unit V V V °C °C °C kV Thermal Characteristics Symbol θJA Parameter Thermal Resistance in Free Air DIP SOP Value 125 175 Unit °C/W Electrical Characteristics VDD =15V, Note3 ; RT=9.09KΩ; CT=3.3nF; -40oC ≤ TA ≤ 85oC; unless noted Symbol Parameter Test Conditions T A=25°C, IO (Output Current)=1mA 12V ≤ V DD ≤ 1 8V, IO=5 µ A 1mA ≤ IO ≤ 2 0mA Line, Load, Temp. 10Hz ≤ f ≤10kHz, T A = 2 5oC T A = 1 25 oC, 1000 hrs APW38HC4XA Min. Typ. Max. 4.90 5.00 1 6 0.2 50 5 -55 52 0.2 0.03 8.4 8.4 1.6 2.50 5.10 20 25 5.18 25 -120 55 1.0 9.0 9.5 Unit V mV mV mV/°C V µV mV mA kHz % %/°C mA V P-P 2.58 V REFERENCE VOLTAGE V REF Reference Voltage REG line Line Regulation REG load Load Regulation Temp. Stability Total Output Variation Output Noise Voltage Long Term Stability ISC Output Short Circuit OSCILLATOR F OSC Initial Accuracy Voltage Stability Temp. Stability IDISCHG Clock Ramp Reset Current 4.82 -25 T A=25°C, Note 4 12V ≤ V DD ≤ 1 8V T MIN ≤ T A ≤ T MAX T A=25°C, V RT/CT=2V T A=T MIN to T MAX V RT/CT p eak to peak V COMP=2.5V 3 49 7.7 7.2 V OSC Amplitude ERROR AMPLIFIER Input Voltage Copyright  ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 2.42 www.anpec.com.tw APW38HC42A/3A/4A/5A Electrical Characteristics (Cont.) VDD =15V, Note3 ; RT=9.09KΩ; CT=3.3nF; -40oC ≤ TA ≤ 85oC; unless noted Symbol ERROR IFB A VOL BW Parameter Test Conditions V FB=5V 2≤ VO ≤ 4 V 12 ≤ V DD ≤ 1 8V V FB=2.7V, V COMP =1.1V V FB=2.3V, V COMP =5V V FB=2.3V, R L =15k to GND V FB=2.7V, R L =15k to VREF Notes 1,2 V COMP=5V, Note 1 12 ≤ V DD ≤ 1 8V, Note 1 V ISNS =5V 60 0.7 60 2 -0.5 5 70 1.0 7 -1 5.4 0.01 3.0 1.0 70 120 Sourcing Current = 200mA Sinking Current = 200mA T A =25 °C, C L=1nF T A =25 °C, C L=1nF APW38HC42/4A 13.5 APW38HC43/5A 7.8 APW38HC42/4A 8.0 APW38HC43/5A 7.0 APW38HC42/3A APW38HC44/5A 94 46 6.3 4 15 10 14.5 8.4 9.0 7.6 96 50 0 30 25 2.0 150 150 4.0 30 20 15.5 9.0 10.0 8.2 APW38HC4XA Min. Typ. Max. 0.1 Unit µA dB MHz dB mA mA V V V/V V dB µA ns Ω ns ns V V AMPLIFIER Input Bias Current Open Loop Gain Unity Gain Bandwidth PSRR Output Sink Current Output Source Current V OH Output Voltage (High) V OL Output Voltage (Low) CURRENT SENSE A Gain V THM Maximum Threshold PSRR IISNS Input Bias Current TD Delay to Output OUTPUT R DS(ON) H igh R DS(ON) L ow tR Rise Time tF Fall Time UNDERVOLTAGE LOCKOUT V DD(ST) Start Threshold V DD(MIN) Minimum Operating Voltage PULSE WIDTH MODULATOR D MAX D MIN Maximum Duty Cycle Minimum Duty Cycle 1.1 3.15 1.1 0.1 250 2.85 0.9 % % TOTAL STANDBY CURRENT V DD=13V, APW38HC42/4A V DD=7.5V, APW38HC43/5A IDD(OP) Operating Supply Current V FB = V ISNS= 0V, C L =1nF Note 1 : Parameter measured at trip point of latch with VFB=0V. IDD(ST) Start-Up Current µA mA Note 2 : Gain defined as : A= ∆VCOMP , 0 200V 10ms , Itr > 1 00mA Carrier Tape & Reel Dimensions t P P1 D Po E F W Bo Ao Ko D1 T2 J C A B T1 Application SOP-8 Application SOP-8 A 330 ±1 F B 62 ± 1.5 D C 12.75 + 0.1 5 D1 J 2 + 0.5 Po T1 12.4 +0.2 P1 T2 2 ± 0.2 Ao W 12 + 0.3 - 0.1 Bo 5.2 ± 0.1 P 8 ± 0.1 Ko E 1.75 ± 0.1 t 5.5 ± 0.1 1.55 ±0.1 1.5+ 0.25 4.0 ± 0.1 2.0 ± 0.1 6.4 ± 0.1 2.1 ± 0.1 0.3 ±0.013 (mm) Copyright  ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 10 www.anpec.com.tw APW38HC42A/3A/4A/5A Cover Tape Dimensions Application SOP- 8 Carrier Width 12 Cover Tape Width 9.3 Devices Per Reel 2500 Customer Service Anpec Electronics Corp. Head Office : 5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, R. O. C. Tel : 886-2-89191368 Fax : 886-2-89191369 Copyright  ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 11 www.anpec.com.tw