TJ34063AGD

DC-DC Converter Control Circuits TJ34063A FEATURES         Output Switch Current In Excess of 1.5A 2% Reference Accuracy Low Quiescent Current : 2.5mA(Typ.) Operating From 3V to 40V Frequency Operation to 100KHz Active Current Limiting Moisture Sensitivity Level 3 for SMD Package TJ34063AG is Halogen Free Products SOP-8 PKG APPLICATION  Battery Chargers ORDERING INFORMATION  NICs / Switches / Hubs Device Package  ADSL Modems  Negative Voltage Power Supplies TJ34063AGD SOP-8 DESCRIPTION The TJ34063A series is a monolithic control circuit delivering the main functions for DC-DC voltage converting. The device contains an internal temperature compensated reference, comparator, duty cycle controlled oscillator with an active current limit circuit driver and high current output switch. Output voltage is adjustable through two external resistors with a 2% reference accuracy. Employing a minimum number of external components the TJ34063A devices series is designed for StepDown, Step-Up and Voltage-Inverting applications. ABSOLUTE MAXIMUM RATINGS (Note 1) CHARACTERISTIC SYMBOL MIN. MAX. UNIT Power Supply Voltage VCC - 40 V Comparator Input Voltage Range VIR -0.3 40 V Switch Collector Voltage VSWC 40 V Switch Emitter Voltage(VSWC=40V) VSWE 40 V Switch Collector to Emitter Voltage VCE 40 V Driver Collector Voltage Vdc - 40 V Idc - 100 mA ISW - 1.5 A Driver Collector Current Switch Current Jul. 2018 - Rev. 0.1 (Note 2) -1- HTC DC-DC Converter Control Circuits TJ34063A ABSOLUTE MAXIMUM RATINGS (Continued) CHARACTERISTIC SYMBOL MIN. MAX. UNIT Power Dissipation (at TA = 25°C) SOP-8 PDMAX_SOP-8 0.76 W Thermal Resistance(*) SOP-8 θJA-SOP-8 130 °C/W Operating Junction Temperature Range Storage Temperature Range TJ -40 150 °C TSTG -65 150 °C Note 1. Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. (*) This value depends from thermal design of PCB on which the device is mounted. RECOMMENDED OPERATING CONDITIONS CHARACTERISTIC SYMBOL MIN. MAX. UNIT Supply Voltage VCC 3 40 V Operating Ambient Temperature TA -40 125 °C ORDERING INFORMATION Package SOP-8 Order No. TJ34063AGD Description 1.5A, 100kHz Supplied As Status Reel Active TJ 34063 Package Type D : SOP-8 Green Mode G : Halogen Free Temperature Range A : -40℃~125℃ Root Name Product Code Jul. 2018 - Rev. 0.1 -2- HTC DC-DC Converter Control Circuits TJ34063A PIN CONFIGURATION 1 8 2 7 3 6 4 5 SOP-8 PIN DESCRIPTION SOP-8 PKG Pin No. Name Function 1 Switch Collector Internal switch transistor collector 2 Switch Emitter Internal switch transistor emitter 3 Timing Capacitor Timing Capacitor to control the switching frequency 4 GND Ground pin for all internal circuits 5 Comparator Inverting Input Inverting input pin for internal comparator 6 VCC Voltage supply 7 IPK Sense 8 Driver Collector Peak Current Sense Input by monitoring the voltage drop across an external I sense resistor to limit the peak current through the switch Voltage driver collector BLOCK DIAGRAM Driver Collector 8 S 1 Switch Collector 2 Switch Emitter IPK Oscillator 3 Timing Capacitor 1.25V Reference Regulator 4 GND Q R IPK Sense VCC Jul. 2018 - Rev. 0.1 Q1 7 6 Comparator + Comparator Inverting Input Q2 5 -3- HTC DC-DC Converter Control Circuits TJ34063A ELECTRICAL CHARACTERISTICS (Refer to the test circuits, VCC=5V, TA=TLOW to THIGH, unless otherwise specified, see note 2) SYMBOL PARAMETER TEST CONDITIONS MIN. TYP. MAX. UNIT OSCILLATOR FOSC Frequency VPIN5=0V, CT=1nF, TA=25℃ 24 33 42 KHz ICHG Charge Current VCC=5 to 40V, TA=25℃ 24 35 42 ㎂ Discharge Current VCC=5 to 40V, TA=25℃ 140 220 260 ㎂ IDISCHG/ICHG Discharge to Charge Current Ratio Pin 7= VCC, TA=25℃ 5.2 6.5 7.5 VIPK(SENSE) Current Limit Sense Voltage ICHG=IDISCHG, TA=25℃ 250 300 350 mV IDISCHG OUTPUT SWITCH VCE(SAT) Saturation Voltage, Darlington connection ISW=1A, Pins 1,8 connected 1.0 1.3 V VCE(SAT) Saturation Voltage ISW=1A, RPIN8=82Ω to VCC, Forced β ~ 20 0.45 0.7 V DC Current Gain ISW=1A, VCE=5V, TA=25℃ Collector Off-State Current VCE= 40V 1.0 100 ㎂ 1.25 1.275 V 1.29 V hFE IC(OFF) 50 75 COMPARATOR VTH REGLINE IIB TA=25℃ 1.225 TA=TLOW to THIGH 1.21 Threshold Voltage Threshold Voltage Line Regulation VCC= 3 to 40V 1.4 5 mV Input Bias Current VIN= 0V -20 -400 nA VCC= 5 to 40V, CT=1nF Pin7= VCC, VPIN5>VTH, Pin2=GND Remaining pins open 1.4 4 mA TOTAL DEVICE ICC Supply Current Note 1. Maximum package power dissipation limit must be observed. Note 2. TLOW= '-40℃, THIGH= '+125℃ Note 3. If Darlington configuration is not used, care must be taken to avoid deep saturation of output switch. The resulting switch-off time may be adversely affected. In a Darlington configuration the following output driver condition is suggested: Forced β of output switch : Ι C(OUTPUT) Ι C(DRIVER) - 7.0mΑ * ≥10 * Currentless due to a built in 1KΩ anti-leakage resistor Jul. 2018 - Rev. 0.1 -4- HTC DC-DC Converter Control Circuits TJ34063A TYPICAL ELECTRICAL CHARACTERISTICS Emitter Follower Configuration Output Output Switch ON-OFF Time Saturation Voltage vs. Emitter Current vs. Oscillator Timing Capacitor Common Emitter Configuration Output Switch Current Limit Sense Voltage (VIPK) Saturation Voltage vs. Collector Current vs. Temperature Standby supply current vs. Supply voltage Jul. 2018 - Rev. 0.1 -5- HTC DC-DC Converter Control Circuits TJ34063A TYPICAL APPLICATION CIRCUIT Step-Up Converter L1 170uH R3 180Ω 8 1 DRC SWC IPK SWE 7 RSC 0.22Ω 2 6 VCC TC 5 12V 4 CII VIN D1 1N5819 3 GND VOUT C3 1.5nF + C2 100uF 28V / 175mA TJ34063A R1 2.2kΩ + R2 47kΩ C1 330uF Step-Down Converter 8 1 DRC SWC 7 RSC 0.33Ω IPK SWE 6 3 VCC TC 5 25V C2 100uF Jul. 2018 - Rev. 0.1 GND + R1 1.2kΩ L1 220uH 4 CII VIN D1 1N5819 2 C3 470pF + R2 3.6kΩ -6- VOUT C1 470uF 5V / 0.5A HTC DC-DC Converter Control Circuits TJ34063A Step-Up with External NPN Switch 8 S Q R VOUT 1 Q2 + Q1 2 7 RSC VIN IPK Oscillator 3 1.25V Reference Regulator 4 6 Comparator + 5 Voltage Inverting Converter 8 1 DRC SWC IPK SWE 7 RSC 0.24Ω 2 6 3 VCC TC 5 VIN 4.5V to 6V D1 1N5819 4 CII C2 100uF L1 88uH GND + C3 1.5nF VOUT R1 8.2kΩ Jul. 2018 - Rev. 0.1 R2 953Ω C1 1000uF -7- + -12V / 100mA HTC DC-DC Converter Control Circuits TJ34063A Step-Down with External PNP Switch 8 S Q 1 Q2 R Q1 VOUT + 2 7 RSC VIN IPK Oscillator 3 1.25V Reference Regulator 4 6 Comparator + 5 Voltage Inverting with External NPN Switch 8 S Q 1 Q2 R Q1 2 7 RSC VIN IPK Oscillator 3 1.25V Reference Regulator 4 VOUT 6 Comparator + - + 5 Jul. 2018 - Rev. 0.1 -8- HTC DC-DC Converter Control Circuits TJ34063A REVISION NOTICE The description in this data sheet can be revised without any notice to describe its electrical characteristic properly. Jul. 2018 - Rev. 0.1 -9- HTC