TC96C555MJA

1 TC96C55 3A OUTPUT PROGRAMMABLE POWER OSCILLATOR FEATURES s s s s s Controllable Duty Cycle Wide Operating Range ............................. 5V to 18V High Peak Output Current .................................. 3A High Capacitive Load Drive Capability .................................... 1800pF in 20nsec Short Delay Time ............................. < 150nsec Typ GENERAL DESCRIPTION The TC96C555 Power Oscillator is an easily programmed IC that can be used in simple switch-mode power supplies, diode doublers and inverters, and similar circuits where high-current pulses are needed in an economical form. The TC96C555 uses TelCom Semiconductors' new Tough CMOS™ process. The output drive capability is similar to the TC4423/4/5 MOSFET Drivers, which can switch in 25nsec into a capacitive load of 1,800pF. The TC96C555 will not latch up under any conditions within their power and voltage ratings. They can accept, without damage, up to 1.5A of reverse current (of either polarity) being forced back into the output. All terminals are also fully protected against up to 4kV of electrostatic discharge. The peak output is rated at 3A. Split outputs permits driving of an external pair of MOSFETS, with controllable cross conduction between upper and lower devices. PIN CONFIGURATIONS (DIP and SOIC) Operating Temp Range 0°C to +70°C 0°C to +70°C – 40°C to +85°C – 40°C to +85°C – 55°C to +125°C VR2 VIN VREF VR1 1 2 3 4 TC96C555CPA TC96C555EPA 2 3 4 5 6 APPLICATIONS s s s s s Fixed Frequency Power Oscillator Voltage Controlled Oscillator Low Power Buck Regulator Supply MOSFET Driver Simple diode inverters and doublers ORDERING INFORMATION Part No. TC96C555COA TC96C555CPA TC96C555EOA TC96C555EPA TC96C555MJA Package 8-Pin SOIC 8-Pin Plastic DIP 8-Pin SOIC 8-Pin Plastic DIP 8-Pin CerDIP 8 7 6 5 GND OUT OUT VDD VR2 VIN VREF VR1 1 2 3 4 TC96C555COA TC96C555EOA 8 7 6 5 GND OUT OUT VDD FUNCTIONAL BLOCK DIAGRAM VDD 3 +4V VREF 4 3V 2 ISOURCE 1V 2V 3V Q1 7 VIN 2V 1V Q3 1 3V Q2 6 OUTPUT B OUTPUT A 8 VREF VR1 7 VR2 ISINK 5 GND 8 TC96C555-7 10/21/96 TELCOM SEMICONDUCTOR, INC. 4-159 3A OUTPUT PROGRAMMABLE POWER OSCILLATOR TC96C555 ABSOLUTE MAXIMUM RATINGS SOIC RΘJ-A .................................................................... 155°C/W SOIC RΘJ-C ....................................................................... 45°C/W Operating Temperature Range C Version ............................................... 0°C to +70°C E Version .......................................... – 40°C to +85°C M Version ....................................... – 55°C to +125°C Package Power Dissipation (TA ≤ 70°C) Plastic DIP ......................................................730mW CerDIP ............................................................800mW SOIC ...............................................................470mW Supply Voltage ......................................................... +20V Input Voltage, Pin 1 or 4 ................. VDD +0.3 to GND –0.3 Maximum Chip Temperature ................................. +150°C Storage Temperature Range ................ – 65°C to +150°C Package Thermal Resistance CerDIP RΘJ-A ................................................................ 150°C/W CerDIP RΘJ-C ................................................................... 50°C/W PDIP RΘJ-A .................................................................... 125°C/W PDIP RΘJ-C ....................................................................... 42°C/W ELECTRICAL CHARACTERISTICS: unless otherwise specified TA = +25°C with 5V ≤ VDD ≤ 18V. Symbol Parameter Pin 4 Input Current for ISOURCE Control Pin 1 Input Current for ISINK Control Test Condition (VREF - VR1) / RCHG Fig. 2 (VREF - VR2) / RDIS Fig. 2 VDD = 15V, IREF = 10µA VDD = 7V to 18V IREF = 0 to 1mA – 55 ≤ Temp ≤ 125°C Min 5.0 5.0 3.8 — — — — 2.85 0.85 Typ — — 4 0.6 0.1 — 1100 3.0 1 2 1 1.0 8 Max 150 150 4.2 1 0.2 5 2000 3.15 1.15 2.2 1.2 1.1 15 Unit µA µA V %/V %/mA % ppm/°C V V V V V mA Programmable Current Range Reference Section VREF Line Regulation of VREF Load Regulation of VREF VDRIFT TCVREF VR1, VR2 VREF - VR Vih Vil Vih - Vil IREF VREF Drift Over Lifetime VREF Tempco Voltage at Pin 1 & 4 Voltage Across RCHG and RDIS Pin 2, High Switching Threshold Pin 2, Low Switching Threshold Delta High to Low Threshold VREF Pin 3 Short to GND Pin 5 VDD = 15V VDD = 15V VDD = 15V VDD = 15V 1.8 0.8 0.9 — ELECTRICAL CHARACTERISTICS: unless otherwise specified TA = +25°C with 10V ≤ VDD ≤ 18V: Symbol Oscillator Voltage Stability Temperature Stability VDD = 7 to 18V – 55 ≤ Temp ≤ 125°C IDD0 ≤ VIN ≤ 3V C1 = 1800pF C1 = 1800pF C1 = 1800pF C1 = 1800pF – – – – – – – VDD – 0.025 – 1 0.4 2 23 20 140 100 – – 3.5 2.5 3 5 – 3 30 30 180 140 – 0.025 5 5 – %/V %/°C mA nsec nsec nsec nsec V V Ω Ω A Parameter Test Condition Min Typ Max Unit Power Supply Power Supply Current Switching Time1 tR tF tD1 tD2 Rise Time Fall Time Delay Time Delay Time High Output Voltage Low Output Voltage Output Res Hi State Output Res Lo State Peak Output Current Output VOH VOL RO RO IPK 4-160 VDD = 15V VDD = 15V VDD = 18V – – – TELCOM SEMICONDUCTOR, INC. 3A OUTPUT PROGRAMMABLE POWER OSCILLATOR TC96C555 ELECTRICAL CHARACTERISTICS: specifications over operating temperature range unless otherwise specified 5.0V < VDD