HT83063AREZ

HT83063A 1.5 A, Step-Up/Down/ Inverting Switching Regulators (compatible to MC33063) The HT83063A Series is a monolithic control circuit containing the primary functions required for DC−to−DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step−Down and Step−Up and Voltage−Inverting applications with a minimum number of external components. Features • • • • • • • • ESOP−8 8 Operation from 3.0 V to 40 V Input Low Standby Current Current Limiting Output Switch Current to 1.5 A Output Voltage Adjustable Frequency Operation to 100 kHz Precision 2% Reference Pb−Free Packages are Available 1 DIP−8 8 1 DFN8 4*4 1 ORDERING INFORMATION HT83063AREZ ESOP8 HT83063ARDZ DFN8 HT83063ANZ DIP8 TA = -40 to 85C for all packages. 1 Drive 8 Collector Q2 S Q Q1 R Ipk 7 Sense Switch Collector 100 2 Switch Emitter Ipk Oscillator CT 6 VCC 3 Comparator + - Timing Capacitor 1.25 V Reference Regulator Comparator 5 Inverting Input 4 GND (Bottom View) This device contains 79 active transistors. Figure 1. Representative Schematic Diagram Rev. 01 HT83063A 1 8 Driver Collector Switch Emitter 2 7 Ipk Sense Timing Capacitor 3 6 VCC GND 4 5 Comparator Inverting Input Switch Collector ÇÇ ÇÇ ÇÇ ÇÇ ÇÇ Switch Collector Switch Emitter Timing Capacitor EP Flag GND (Top View) (Top View) Ç Ç Ç Ç Ç Driver Collector Ipk Sense VCC Comparator Inverting Input Figure 2. Pin Connections MAXIMUM RATINGS Rating Symbol Value Unit Power Supply Voltage VCC 40 Vdc Comparator Input Voltage Range VIR −0.3 to + 40 Vdc Switch Collector Voltage VC(switch) 40 Vdc Switch Emitter Voltage (VPin 1 = 40 V) VE(switch) 40 Vdc VCE(switch) 40 Vdc Driver Collector Voltage VC(driver) 40 Vdc Driver Collector Current (Note 1) IC(driver) 100 mA ISW 1.5 A PD 1.25 W RqJA 115 °C/W PD 625 mW RqJA 160 °C/W Switch Collector to Emitter Voltage Switch Current Power Dissipation and Thermal Characteristics Plastic Package, P, P1 Suffix TA = 25°C Thermal Resistance SOIC Package, D Suffix TA = 25°C Thermal Resistance DFN Package TA = 25°C PD 1.25 mW RqJA 80 °C/W Operating Junction Temperature TJ +150 °C Operating Ambient Temperature Range TA Thermal Resistance °C HT84063 0 to +70 HT82063 −40 to +125 HT83063 Storage Temperature Range −40 to + 85 Tstg −65 to +150 °C Rev. 01 HT83063A ELECTRICAL CHARACTERISTICS (VCC = 5.0 V, TA = Tlow to Thigh [Note 4], unless otherwise specified.) Symbol Min Typ Max Unit Frequency (VPin 5 = 0 V, CT = 1.0 nF, TA = 25°C) fosc 24 33 42 kHz Charge Current (VCC = 5.0 V to 40 V, TA = 25°C) Ichg 24 35 42 mA Idischg 140 220 260 mA Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C) Idischg/Ichg 5.2 6.5 7.5 − Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C) Vipk(sense) 250 300 350 mV Saturation Voltage, Darlington Connection ( ISW = 1.0 A, Pins 1, 8 connected) VCE(sat) − 1.0 1.3 V Saturation Voltage (Note 6) (ISW = 1.0 A, RPin 8 = 82 W to VCC, Forced b ] 20) VCE(sat) − 0.45 0.7 V hFE 50 75 − − IC(off) − 0.01 100 mA 1.225 1.21 1.25 − 1.275 1.29 − − 1.4 1.4 5.0 6.0 IIB − −20 −400 nA ICC − − 4.0 mA Characteristics OSCILLATOR Discharge Current (VCC = 5.0 V to 40 V, TA = 25°C) OUTPUT SWITCH (Note 5) DC Current Gain (ISW = 1.0 A, VCE = 5.0 V, TA = 25°C) Collector Off−State Current (VCE = 40 V) COMPARATOR Vth Threshold Voltage TA = 25°C TA = Tlow to Thigh Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V) HT84064 HT83063 Input Bias Current (Vin = 0 V) Regline V mV TOTAL DEVICE Supply Current (VCC = 5.0 V to 40 V, CT = 1.0 nF, Pin 7 = VCC, VPin 5 > Vth, Pin 2 = GND, remaining pins open) Forced b of output switch : IC output w 10 IC driver – 7.0 mA * * The 100 W resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts. Rev. 01 HT83063A 18 OFF TIME (ms) 14 140 12 120 ON TIME (ms) 10 100 8 80 6 OFF TIME (ms) 4 60 40 FREQUENCY (kHz) 2 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 20 200 mV/DIV 160 V OSC , OSCILLATOR VOLTAGE (V) 16 ON TIME (ms), FREQUENCY (kHz) 180 VCC = 5.0 V, Pin 7 = VCC Pin 5 = GND, TA = 25°C VCC = 5.0 V Pin 7 = VCC Pin 2 = GND Pins 1, 5, 8 = Open CT = 1.0 nF TA = 25°C 0 5.0 10 ms/DIV Figure 4. Timing Capacitor Waveform Ct, TIMING CAPACITOR CAPACITANCE (nF) Figure 3. Oscillator Frequency VCE(sat), SATURATION VOLTAGE (V) VCE(sat), SATURATION VOLTAGE (V) 1.8 1.7 1.6 1.5 1.4 1.3 VCC = 5.0 V Pins 1, 7, 8 = VCC Pins 3, 5 = GND TA = 25°C (See Note 7) 1.2 1.1 1.0 0 0.2 0.4 0.6 0.8 1.0 1.2 IE, EMITTER CURRENT (A) 1.4 1.1 1.0 0.9 0.7 0.6 0.4 0.3 0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 IC, COLLECTOR CURRENT(A) 1.4 1.6 Figure 6. Common Emitter Configuration Output Switch Saturation Voltage versus Collector Current 3.6 380 3.2 VCC = 5.0 V Ichg = Idischg I CC, SUPPLY CURRENT (mA) VIPK(sense), CURRENT LIMIT SENSE VOLTAGE (V) Forced b = 20 0.1 0 1.6 400 320 300 280 260 240 220 200 -55 VCC = 5.0 V Pin 7 = VCC Pins 2, 3, 5 = GND TA = 25°C (See Note 7) 0.5 Figure 5. Emitter Follower Configuration Output Saturation Voltage versus Emitter Current 360 340 Darlington Connection 0.8 2.8 2.4 2.0 1.6 1.2 CT = 1.0 nF Pin 7 = VCC Pin 2 = GND 0.8 0.4 0 -25 0 25 50 75 TA, AMBIENT TEMPERATURE (°C) 100 Figure 7. Current Limit Sense Voltage versus Temperature 125 0 5.0 10 15 20 25 30 VCC, SUPPLY VOLTAGE (V) 35 40 Figure 8. Standby Supply Current versus Supply Voltage 7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible. Rev. 01 HT83063A 170 mH L 1 8 180 S Q Q2 R Q1 7 2 1N5819 Ipk Rsc 0.22 Vin 12 V OSC 6 + CT 3 CT VCC 100 + - Comp. 5 1.25 V Ref Reg 1500 pF 4 1.0 mH R2 R1 Vout 28 V/175 mA 47 k 2.2 k Vout + 330 + CO 100 Optional Filter Test Conditions Results Line Regulation Vin = 8.0 V to 16 V, IO = 175 mA 30 mV = ±0.05% Load Regulation Vin = 12 V, IO = 75 mA to 175 mA 10 mV = ±0.017% Output Ripple Vin = 12 V, IO = 175 mA 400 mVpp Efficiency Vin = 12 V, IO = 175 mA 87.7% Output Ripple With Optional Filter Vin = 12 V, IO = 175 mA 40 mVpp Figure 9. Step−Up Converter Rev. 01 HT83063A 8 1 7 R Vout 8 7 2 2 Rsc Rsc Vin Vout 1 Vin 6 6 R ³ 0 for constant Vin Figure 10. External Current Boost Connections for IC Peak Greater than 1.5 A 9a. External NPN Switch 9b. External NPN Saturated Switch (See Note 8) 8. If the output switch is driven into hard saturation (non−Darlington configuration) at low switch currents (≤ 300 mA) and high driver currents (≥ 30 mA), it may take up to 2.0 ms to come out of saturation. This condition will shorten the off time at frequencies ≥ 30 kHz, and is magnified at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a non−Darlington configuration is used, the following output drive condition is recommended. Rev. 01 HT83063A 1 8 S Q Q2 Q1 R 7 2 Ipk Rsc 0.33 Vin 25 V OSC 6 100 + CT VCC + - 1.25 V Ref Reg Comp. 1N5819 3 L CT 220 mH 470 pF 4 5 3.6 k R1 1.0 mH Vout 5.0 V/500 mA R2 + 1.2 k 470 + CO Vout 100 Optional Filter Test Conditions Results Line Regulation Vin = 15 V to 25 V, IO = 500 mA 12 mV = ±0.12% Load Regulation Vin = 25 V, IO = 50 mA to 500 mA 3.0 mV = ±0.03% Output Ripple Vin = 25 V, IO = 500 mA 120 mVpp Short Circuit Current Vin = 25 V, RL = 0.1 W 1.1 A Efficiency Vin = 25 V, IO = 500 mA 83.7% Output Ripple With Optional Filter Vin = 25 V, IO = 500 mA 40 mVpp Figure 11. Step−Down Converter 8 1 1 V 8 7 Vout Rsc Vin 7 2 6 2 Rsc Vin 6 Figure 12. External Current Boost Connections for IC Peak Greater than 1.5 A 11a. External NPN Switch 11b. External PNP Saturated Switch Rev. 01 HT83063A 1 8 S Q Q2 R Q1 7 2 Ipk Rsc 0.24 OSC 6 Vin 4.5 V to 6.0 V 88 mH L CT VCC 3 + 100 + - Comp. + 1.25 V Ref Reg 1500 pF 1N5819 4 5 1.0 mH R1 Vout -12 V/100 mA 953 R2 1000 mf 8.2 k + Vout CO + 100 Optional Filter Test Conditions Results Line Regulation Vin = 4.5 V to 6.0 V, IO = 100 mA 3.0 mV = ± 0.012% Load Regulation Vin = 5.0 V, IO = 10 mA to 100 mA 0.022 V = ± 0.09% Output Ripple Vin = 5.0 V, IO = 100 mA 500 mVpp Short Circuit Current Vin = 5.0 V, RL = 0.1 W 910 mA Efficiency Vin = 5.0 V, IO = 100 mA 62.2% Output Ripple With Optional Filter Vin = 5.0 V, IO = 100 mA 70 mVpp Figure 13. Voltage Inverting Converter 8 1 1 Vout 8 7 2 7 Vout Vin 3 6 Vin 6 2 3 + + 4 4 Figure 14. External Current Boost Connections for IC Peak Greater than 1.5 A 13a. External NPN Switch 13b. External PNP Saturated Switch Rev. 01 HT83063A Calculation Step−Up ton/toff V out ) V V F V out ) V |V out| ) V F * V sat * V out in(min) CT 2I ǒ t on ) t off F * V sat 1 f t on ) t ton ) 1 t off off ton ) 1 t off (ton + toff) − toff (ton + toff) − toff (ton + toff) − toff 10−5 out(max) ton 4.0 x ǒ Ǔ t on ) 1 t off 2I 0.3/Ipk(switch) (V in ton ) 1 t off 4.0 x Ipk(switch) V 1 f t on ) t ton CO V Voltage−Inverting 1 f toff Rsc in(min) * V sat in(min) (ton + toff) L(min) * V Step−Down * V sat) in(min) I pk(switch) 9 V Ǔ t on(max) ǒ 10−5 off in(min) I I I outt on ripple(pp) 2I out(max) 0.3/Ipk(switch) (V 4.0 x 10−5 ton ton * V sat * V out) pk(switch) Ǔ t (t ) t ) pk(switch) on off 8V ripple(pp) on(max) ǒ out(max) ǒ Ǔ t on ) 1 t off 0.3/Ipk(switch) (V * V sat) in(min) I pk(switch) 9 V Ǔ t on(max) I outt on ripple(pp) Vsat = Saturation voltage of the output switch. VF = Forward voltage drop of the output rectifier. The following power supply characteristics must be chosen: Vin − Nominal input voltage. Vout − Desired output voltage, |V out| + 1.25 1 ) R2 R1 Iout − Desired output current. fmin − Minimum desired output switching frequency at the selected values of Vin and IO. Vripple(pp) − Desired peak−to−peak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the line and load regulation. ǒ Ǔ NOTE: For further information refer to Application Note AN920A/D and AN954/D. Figure 17. Design Formula Table Rev. 01 HT83063A ESOP8 Rev. 01 HT83063A DIP−8 D A D1 E 8 5 E1 1 4 NOTE 5 F c E2 END VIEW TOP VIEW NOTE 3 e/2 A NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: INCHES. 3. DIMENSION E IS MEASURED WITH THE LEADS RESTRAINED PARALLEL AT WIDTH E2. 4. DIMENSION E1 DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. DIM A A1 b C D D1 E E1 E2 E3 e L INCHES NOM MAX −−−− 0.210 −−−− −−−− 0.018 0.022 0.010 0.014 0.365 0.400 −−−− −−−− 0.310 0.325 0.250 0.280 0.300 BSC −−−− −−−− 0.430 0.100 BSC 0.115 0.130 0.150 MIN −−−− 0.015 0.014 0.008 0.355 0.005 0.300 0.240 MILLIMETERS MIN NOM MAX −−−− −−−− 5.33 0.38 −−−− −−−− 0.35 0.46 0.56 0.20 0.25 0.36 9.02 9.27 10.02 0.13 −−−− −−−− 7.62 7.87 8.26 6.10 6.35 7.11 7.62 BSC −−−− −−−− 10.92 2.54 BSC 2.92 3.30 3.81 L A1 C SEATING PLANE E3 e 8X SIDE VIEW b 0.010 M C A END VIEW Rev. 01 HT83063A DFN8, 4x4 A B D PIN ONE REFERENCE 2X ÉÉÉ ÉÉÉ ÉÉÉ 0.15 C 0.10 C 8X L1 DETAIL A E OPTIONAL CONSTRUCTIONS 0.15 C 2X 0.08 C NOTE 4 EXPOSED Cu DETAIL B ÇÇÇ (A3) A A1 C ÇÇÇ 1 e A1 ALTERNATE CONSTRUCTIONS 5 DIM A A1 A3 b D D2 E E2 e K L L1 MILLIMETERS MIN MAX 0.80 1.00 0.00 0.05 0.20 REF 0.25 0.35 4.00 BSC 1.91 2.21 4.00 BSC 2.09 2.39 0.80 BSC 0.20 −−− 0.30 0.50 −−− 0.15 SOLDERING FOOTPRINT* L 2.21 4 ÇÇ Ç 8 8X SEATING PLANE ÉÉ ÇÇ ÇÇ A3 MOLD CMPD DETAIL B D2 K ÇÇ ÉÉ TOP VIEW SIDE VIEW DETAIL A NOTES: 1. DIMENSIONS AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. DIMENSION b APPLIES TO PLATED TERMINAL AND IS MEASURED BETWEEN 0.15 AND 0.30MM FROM TERMINAL TIP. 4. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. 5. DETAILS A AND B SHOW OPTIONAL CONSTRUCTIONS FOR TERMINALS. L L 8X 0.63 E2 8X 4.30 2.39 b PACKAGE OUTLINE 0.10 C A B 0.05 C NOTE 3 BOTTOM VIEW 8X 0.80 PITCH 0.35 DIMENSIONS: MILLIMETERS Rev. 01