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UC3845BN USED CIRCUIT

Catalog Datasheet MFG & Type PDF Document Tags

-20/UC3845BN USED CIRCUIT

Abstract: UC3843BN Shutdown. i" i 9- osc I JL The sim ple two transistor circuit can be used in place of the , flip flop used only in UC3844B and UC3845B) March 1999 1/15 UC2842B/3B/4B/5B - UC3842B/3B/4B , UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B THERMAL DATA Sym bol Rth j-amb D escri p tio n M , lo = 1mA 5.00 20 3 V ref 25 4.9 O utput Short Circuit 20 mV 3 5.1 , respected; low duty cycle pulse techniques are used during test maintain T j as close to Tamb as possible
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OCR Scan
UC3843BN UC384 UC3842B UC3843B

UC3843bn diagram

Abstract: ic uc3845bn simple two transistor circuit can be used in place of the SCR as shown. All resistors are 10K. Figure , BLOCK DIAGRAM (toggle flip flop used only in UC3844B and UC3845B) vi ft JÎ34V GROUND U sU V LO s/R , ; UC3842BN UC3843BN UC3844BN UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B THERMAL DATA Symbol Rthj-amb , Total Output Variation eN Output Noise Voltage Long Term Stability Isc fosc Output Short Circuit , respected; low duty cycle pulse techniques are used during test maintain Tj as close to Tam b as possible. 2
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OCR Scan
UC3843bn diagram ic uc3845bn UC3845BN internal block diagram D95IN332 N347 uc3843bd1

uc38428

Abstract: UC28428 (min)- The simple two transistor circuit can be used in place of the SCR as shown. All resistors are , flop used only in UC3844B and UC3845B) GROUND Vi < J-J- 5 ¿34V Ihs^LO ND r^i I â  RT/CT , UC2845BN UC3842BN UC3843BN UC3844BN UC3845BN r=Z SGS-THOMSON ôsieRQiiLiieTfflsiRioÅ"s This Material , °C, 1000Hrs (note 2) 5 25 5 25 mV I sc Output Short Circuit -30 -100 -180 -30 -100 -180 mA OSCILLATOR , dissipation limits must be respected; low duty cycle pulse techniques are used during test maintain Tj as
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OCR Scan
C3842 uc38428 UC28428 c3842b uc3845bn ic AJ21S C2842

UC3845BN

Abstract: MBR370 circuit used to obtain the data is constructed to minimize common inductance in the drain and gate , drain­gate capacitance varies greatly with applied voltage. Accordingly, gate charge data is used. In most , analysis of the drive circuit so that At high switching speeds, parasitic circuit elements complicate the analysis. The inductance of the MOSFET source lead, inside the package and in the circuit wiring , typical switching performance is affected by the parasitic circuit elements. If the parasitics were not
Motorola
Original
MTP3N120E AN1327 MBR370 MTP3N120E-D Flyback Switching Power Supply UC3845BN USED CIRCUIT MUR430 Motorola diode 207 MTP3N120E/D 220AB

MUR430

Abstract: UC3845BN maintain a value of unity regardless of the switching speed. The circuit used to obtain the data is , . Accordingly, gate charge data is used. In most cases, a satisfactory estimate of average input current (I G(AV) ) can be made from a rudimentary analysis of the drive circuit so that t = Q/IG(AV) During the rise and , (off). At high switching speeds, parasitic circuit elements complicate the analysis. The inductance of the MOSFET source lead, inside the package and in the circuit wiring which is common to both the drain
ON Semiconductor
Original
mtp3n120

UC3843bn diagram

Abstract: ic uc3845bn The simple two transistor circuit can be used in place of the SCR as shown. All resistors are 10K , operation, a PWM BLOCK DIAGRAM (toggle flip flop used only in UC3844B and UC3845B) Vi 7 UVLO 34V , ; UC2844BN; UC2845BN; UC3842BN UC3843BN UC3844BN UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B , Output Short Circuit OSCILLATOR SECTION fOSC Frequency -30 Frequency Change with Volt. VCC = , techniques are used during test maintain Tj as close to Tamb as possible. 2. These parameters, although
STMicroelectronics
Original
NE555 PWM 500khz mosfet 4b UC2842BD1 UC2843BD1 UC2842B Single Toggle Flip Flop

uc3843bn

Abstract: ic uc3845bn The simple two transistor circuit can be used in place of the SCR as shown. All resistors are 10K , flip flop used only in UC3844B and UC3845B) Vi 7 34V GROUND 5 UVLO S/R 5V REF INTERNAL BIAS VREF GOOD , UC3845BN 2/15 UC2842B/3B/4B/5B - UC3842B/3B/4B/5B THERMAL DATA Symbol Rth j-amb Description , Total Output Variation eN Output Noise Voltage Long Term Stability ISC Output Short Circuit -100 -180 , package power dissipation limits must be respected; low duty cycle pulse techniques are used during test
STMicroelectronics
Original
ST 2n2222 flip flop T Toggle D95IN E-UC3845BD1 E-UC3845BD1013TR E-UC3845BN
Abstract: circuit can be used in place of the SCR as shown. All resistors are 10K. Figure 21: Error Amplifier , operation, a PWM BLOCK DIAGRAM (toggle flip flop used only in UC3844B and UC3845B) Vi 7 UVLO 34V , ; UC2844BN; UC2845BN; UC3842BN UC3843BN UC3844BN UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B , ) 5 125°C, 1000Hrs Output Short Circuit OSCILLATOR SECTION fOSC Frequency -30 , used during test maintain Tj as close to Tamb as possible. 2. These parameters, although guaranteed STMicroelectronics
Original
E-UC3844BD1 E-UC3844BD1013TR E-UC3844BN

UC3842B

Abstract: UC3845BN The simple two transistor circuit can be used in place of the SCR as shown. All resistors are 10K , flip flop used only in UC3844B and UC3845B) Vi 7 34V GROUND 5 UVLO S/R 5V REF INTERNAL BIAS VREF GOOD , UC3845BN 2/15 UC2842B/3B/4B/5B - UC3842B/3B/4B/5B THERMAL DATA Symbol Rth j-amb Description , Total Output Variation eN Output Noise Voltage Long Term Stability ISC Output Short Circuit -100 -180 , package power dissipation limits must be respected; low duty cycle pulse techniques are used during test
STMicroelectronics
Original
UC3843BD1 SO8 uc2843bn 2843BN UC2843B E-UC2843BN E-UC2844BD1 UC2844B E-UC2844BD1013TR
Abstract: circuit can be used in place of the SCR as shown. All resistors are 10K. Figure 21: Error Amplifier , operation, a PWM BLOCK DIAGRAM (toggle flip flop used only in UC3844B and UC3845B) Vi 7 UVLO 34V , ; UC2844BN; UC2845BN; UC3842BN UC3843BN UC3844BN UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B , ) 5 125°C, 1000Hrs Output Short Circuit OSCILLATOR SECTION fOSC Frequency -30 , used during test maintain Tj as close to Tamb as possible. 2. These parameters, although guaranteed STMicroelectronics
Original
E-UC2845BD1 UC2845B E-UC2845BD1013TR E-UC2845BN

UC3843bn diagram

Abstract: circuit can be used in place of the SCR as shown. All resistors are 10K. Figure 21: Error Amplifier , operation, a PWM BLOCK DIAGRAM (toggle flip flop used only in UC3844B and UC3845B) Vi 7 UVLO 34V , ; UC2844BN; UC2845BN; UC3842BN UC3843BN UC3844BN UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B , ) 5 125°C, 1000Hrs Output Short Circuit OSCILLATOR SECTION fOSC Frequency -30 , used during test maintain Tj as close to Tamb as possible. 2. These parameters, although guaranteed
STMicroelectronics
Original
E-UC3843BD1 E-UC3843BD1013TR E-UC3843BN
Abstract: circuit can be used in place of the SCR as shown. All resistors are 10K. Figure 21: Error Amplifier , operation, a PWM BLOCK DIAGRAM (toggle flip flop used only in UC3844B and UC3845B) Vi 7 UVLO 34V , ; UC2844BN; UC2845BN; UC3842BN UC3843BN UC3844BN UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B , ) 5 125°C, 1000Hrs Output Short Circuit OSCILLATOR SECTION fOSC Frequency -30 , used during test maintain Tj as close to Tamb as possible. 2. These parameters, although guaranteed STMicroelectronics
Original
E-UC2842BD1 E-UC2842BD1013TR E-UC2842BN
Abstract: circuit can be used in place of the SCR as shown. All resistors are 10K. Figure 21: Error Amplifier , operation, a PWM BLOCK DIAGRAM (toggle flip flop used only in UC3844B and UC3845B) Vi 7 UVLO 34V , ; UC2844BN; UC2845BN; UC3842BN UC3843BN UC3844BN UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B , ) 5 125°C, 1000Hrs Output Short Circuit OSCILLATOR SECTION fOSC Frequency -30 , used during test maintain Tj as close to Tamb as possible. 2. These parameters, although guaranteed STMicroelectronics
Original
E-UC3842BD1 E-UC3842BD1013TR E-UC3842BN

uc3845bn ic

Abstract: uc3842b equivalent 0.5mA at TA(min). The simple two transistor circuit can be used in place of the SCR as shown. All , (toggle flip flop used only in UC3844B and UC3845B) Vi 7 UVLO 34V GROUND S/R 5 8 5V , UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B THERMAL DATA Symbo l Rth j-amb Description Minid , 10KHz Tj = 25°C (note 2) Tamb = (note 2) 5 125°C, 1000Hrs Output Short Circuit , package power dissipation limits must be respected; low duty cycle pulse techniques are used during test
STMicroelectronics
Original
uc3842b equivalent IC uc3843B Datasheet of ic ne555 uc3843b circuit diagram pin configuration transistor 2N2222 pwm ne555

ic uc3845bn

Abstract: UC3843bn diagram The simple two transistor circuit can be used in place of the SCR as shown. All resistors are 10K , BLOCK DIAGRAM (toggle flip flop used only in UC3844B and UC3845B) Vi 7 UVLO 34V GROUND S/R , ; UC2844BN; UC2845BN; UC3842BN UC3843BN UC3844BN UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B , Output Short Circuit OSCILLATOR SECTION fOSC Frequency -30 Frequency Change with Volt. VCC = , techniques are used during test maintain Tj as close to Tamb as possible. 2. These parameters, although
STMicroelectronics
Original
Diode RL 4B NE555 PWM UC3842BD1 RS flip flop IC UC3843B applications NE555 frequency variation
Abstract: circuit can be used in place of the SCR as shown. All resistors are 10K. Figure 21: Error Amplifier , operation, a PWM BLOCK DIAGRAM (toggle flip flop used only in UC3844B and UC3845B) Vi 7 UVLO 34V , ; UC2844BN; UC2845BN; UC3842BN UC3843BN UC3844BN UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B , ) 5 125°C, 1000Hrs Output Short Circuit OSCILLATOR SECTION fOSC Frequency -30 , used during test maintain Tj as close to Tamb as possible. 2. These parameters, although guaranteed STMicroelectronics
Original
E-UC2843BD1 E-UC2843BD1013TR

UC3845BN USED CIRCUIT

Abstract: MBR370 circuit used to obtain the data is constructed to minimize common inductance in the drain and gate , drain­gate capacitance varies greatly with applied voltage. Accordingly, gate charge data is used. In most , analysis of the drive circuit so that At high switching speeds, parasitic circuit elements complicate the analysis. The inductance of the MOSFET source lead, inside the package and in the circuit wiring , typical switching performance is affected by the parasitic circuit elements. If the parasitics were not
Motorola
Original
AN569 MOC8102 mosfet transistor 800 volts.400 amperes

uc3842b equivalent

Abstract: UC3843bn diagram 0.5mA at TA(min). The simple two transistor circuit can be used in place of the SCR as shown. All , latched operation,a PWM BLOCK DIAGRAM (toggle flip flop used only in UC3844B and UC3845B) Vi 7 , UC3845BN UC2842B/3B/4B/5B - UC3842B/3B/4B/5B THERMAL DATA Symbo l Rth j-amb Description Minid , 10KHz Tj = 25°C (note 2) Tamb = (note 2) 5 125°C, 1000Hrs Output Short Circuit , package power dissipation limits must be respected; low duty cycle pulse techniques are used during test
STMicroelectronics
Original
2N222 Diode 4B ct2n DATA SHEET OF NE555 DATASHEET Transistor BC109 NE555 applications

uc3845 buck converter schematic

Abstract: UC3845 application note buck used in off-line applications in the 100 W - 300 W region. This application note illustrates the , output stage. The power switch (SW) is used to create a rectangular voltage waveform whose amplitude is , transformer. Also, a core and bobbin set must be used that has sufficient creepage (distance over a surface , flux density (Bmax) dictates how much magnetization energy, which is not used, must be released by , protect the gate of the power MOSFET. In this example, an EFD25 core will be used. The primary turns
ON Semiconductor
Original
uc3845 buck converter schematic UC3845 application note buck UC3845 buck N34356 cramer transformers VZ nichicon AND8039/D

MBR370

Abstract: AN1327 unity regardless of the switching speed. The circuit used to obtain the data is constructed to minimize , mount package which allows it to be used in applications that require the use of surface mount , . Accordingly, gate charge data is used. In most cases, a satisfactory estimate of average input current (IG(AV) can be made from a rudimentary analysis of the drive circuit so that At high switching speeds, parasitic circuit elements complicate the analysis. The inductance of the MOSFET source lead
Motorola
Original
MTB3N120E MTB3N120E/D
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