TC170 Microchip Technology Inc., TC170 Datasheet
TC170
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TC170 Summary of contents
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... Two or more TC170 controllers can be slaved together for parallel operation. Circuits can operate from a master TC170 internal oscillator or an external system oscillator. The TC170 operates from 16V power supply. An internal 2%, 5.1V reference minimizes external component count. The TC170 is pin compatible with the Unitrode controller ...
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... REF 2 5.1-Volt Reference Undervoltage Lockout PWM Q R Comparator PWM Latch + – Q4 Shutdown Comparator – Positive Feedback 3.5kΩ TC170 Output Output Ground 1 Current Limit/ Soft-Start Adjust 16 + Shutdown 350 – mV 6kΩ © 2005 Microchip Technology Inc. ...
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... JA SOIC (Wide) θ ....................................... 23°C/W JC PDIP (Narrow) θ .................................... 95°C/W JA PDIP (Narrow) θ .................................... 55°C/W JC Operating Temperature Range ............... 0°C to +70°C Storage Temperature Range.............. -65°C to +150°C TC170 ELECTRICAL SPECIFICATIONS Electrical Characteristics 16V Symbol Parameter Reference Voltage V Reference Voltage REF Line Regulation Load Regulation ...
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... TC170 TC170 ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics 16V Symbol Parameter Output Stage V Output Voltage DD V Output Low Level OL V Output Low Level OL V Output High Level OH V Output High Level OL t Output Rise Time R t Output Fall Time F Undervoltage Lockout ...
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... Supplies power to operate the output drivers only OUTPUT B Output of phase B from push pull transistors Voltage bias supply for all TC170 circuits except the output transistors SHDN Input pin to disable both output drives to 0V OFF. © 2005 Microchip Technology Inc. Description ...
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... PCL normally. 3.2 Output Shutdown The TC170 outputs can be turned OFF quickly through the shutdown input (pin 16). A signal greater than 350mV at pin 16 forces the shutdown comparator output HIGH. The PWM latch is held set, disabling the outputs also turned ON /R1 is greater than 125μ ...
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... From Undervoltage Lockout Q4 + – Limit Buffer Amplifier Lock-Up Amplifier – Positive Feedback 3.5kΩ FIGURE 3- 3.15 Current Sense Amplifier RS TC170 TC170 10 "A" Output R Off (Low PWM Latch 5.1V V REF Shutdown Comparator 16 + – 6kΩ 350mV ABOVE GROUND RESISTIVE SENSING ...
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... Voltage- mode controllers unequally share the load current, decreasing system reliability. Two or more TC170 controllers can be slaved together for parallel operation. Circuits can operate from a master TC170 internal oscillator with an external driver (Figure 3-5). Devices can also be slaved to an external oscillator (Figure 3-6) ...
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... R O FIGURE 3- – two outputs 100 120 140 160 180 200 TC170 On-Time Output Dead Time ( OSCILLATOR FREQUENCY VS. OSCILLATOR RESISTANCE ° +25 C 250pF 500pF 1000pF 750pF OSCILLATOR FREQUENCY (kHz) DS21395C-page 9 ...
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... TC170 4.0 TYPICAL CHARACTERISTICS Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e ...
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... Carrier Tape, Number of Components Per Reel and Reel Size Package 16-Pin SOIC (W) © 2005 Microchip Technology Inc. User Direction of Feed P Standard Reel Component Orientation for TR Suffix Device Carrier Width (W) Pitch (P) Part Per Full Reel 1000 TC170 W Reel Size 13 in DS21395C-page 11 ...
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... TC170 5.3 Package Dimensions 16-Pin PDIP (Narrow) .045 (1.14) .030 (0.76) .770 (19.56) .740 (18.80) .200 (5.08) .140 (3.56) .150 (3.81) .115 (2.92) .110 (2.79) .090 (2.29) 16-Pin SOIC (Wide) .413 (10.49) .398 (10.10) .019 (0.48) .050 (1.27) TYP. .014 (0.36) DS21395C-page 12 PIN 1 .270 (6.86) .240 (6.10) .040 (1.02) .020 (0.51) .014 (0.36) .008 (0.20) .070 (1.78) .022 (0.56) .045 (1.14) .015 (0.38) PIN 1 .299 (7.59) .419 (10.65) .291 (7.40) ...
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... The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. © 2005 Microchip Technology Inc. TC170 DS21395C-page13 ...
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... TC170 NOTES: DS21395C-page14 © 2005 Microchip Technology Inc. ...
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... Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. © 2005 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC ...
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... Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2005 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris ...