TD3842, TD3842A, TD3843A Selling Leads, Datasheet
MFG:TD Package Cooled:3.9 D/C:New
TD3842, TD3842A, TD3843A Datasheet download
Part Number: TD3842
MFG: TD
Package Cooled: 3.9
D/C: New
TD3842, TD3842A, TD3843A
- Table of contents:
Info of TD3842
Info of TD3842A
Info of TD3843A
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About TD3842A
PDF/DataSheet Download
Datasheet: TD3842A
File Size: 361329 KB
Manufacturer: TMC
Download : Click here to Download
About TD3842A
PDF/DataSheet Download
Datasheet: TD3842A
File Size: 361329 KB
Manufacturer: TMC
Download : Click here to Download
About TD3843A
PDF/DataSheet Download
Datasheet: TD3843A
File Size: 361329 KB
Manufacturer: TMC
Download : Click here to Download
TD3842A General Description
The TD3842A/ 3843A/3844A/3845A are fixed frequency current-mode PWM controller. They are specially designed for Off - Line and DC-to-DC converter applications with minimum external components.
These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier. current sensing comparator, and a high current totempole output Ideally suited for driving a power MOSFET. Protection circuity Includes built under-voltage lockout and current limiting. The TD3842A and TD3844A have UVLO thresholds of 16V (on) and 10V (off) The TD 3843A and TD3845A are 8.4V (on) and 7.6V (off) The TD3842A and TD3843A can operate within 100% duty cycle.The TD3844A and TD3845A can operate with 50% duty cycle.
TD3842A Maximum Ratings
| R ating | S ymbol | Value | Unit |
| Bias and Driver Voltages (Zero S eries Impedance, see also Total Device spec) | VCC, VC | 30 | V |
| Total Power S upply and Zener Current | (ICC + IZ) | 30 | mA |
| Output Current, S ource or S ink (Note 1) | IO | 1.0 | A |
| Output E nergy (Capacitive Load per Cycle) | W | 5.0 | mJ |
| Current S ense and Voltage Feedback Inputs | Vin | - 0.3 to + 5.5 | V |
| E rror Amp Output S ink Current | IO | 10 | mA |
| Power Dis s ipation and Thermal Characteris tics Dis s ipation @ TA = 25°C Maximum Power Thermal R es is tance, Junction-to-Air N S uffix, P las tic P ackage Maximum Power Dis s ipation @ TA = 25°C Thermal R es is tance, Junction-to-Air |
PD R QJA PD R QJA |
862 145 1.25 100 |
mW °C/W W °C/W |
| Operating Junction Temperature | TJ | + 150 | °C |
| Operating Ambient Temperature | TA | 0 to + 70 | °C |
| S torage Temperature R ange | Ts tg | - 65 to + 150 | °C |
1. Maximum P ackage power dis s ipation limits mus t be observed.
TD3842A Features
• Low Start Up Current
• Maximum Duty Clamp
• UVLO With Hysteresis
• Operating Frequency Up To 500KHz
• Maximum Duty Clamp
• UVLO With Hysteresis
• Operating Frequency Up To 500KHz
TD3842A Connection Diagram
TD3843A General Description
The TD3842A/ 3843A/3844A/3845A are fixed frequency current-mode PWM controller. They are specially designed for Off - Line and DC-to-DC converter applications with minimum external components.
These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier. current sensing comparator, and a high current totempole output Ideally suited for driving a power MOSFET. Protection circuity Includes built under-voltage lockout and current limiting. The TD3842A and TD3844A have UVLO thresholds of 16V (on) and 10V (off) The TD 3843A and TD3845A are 8.4V (on) and 7.6V (off) The TD3842A and TD3843A can operate within 100% duty cycle.The TD3844A and TD3845A can operate with 50% duty cycle.
TD3843A Maximum Ratings
| R ating | S ymbol | Value | Unit |
| Bias and Driver Voltages (Zero S eries Impedance, see also Total Device spec) | VCC, VC | 30 | V |
| Total Power S upply and Zener Current | (ICC + IZ) | 30 | mA |
| Output Current, S ource or S ink (Note 1) | IO | 1.0 | A |
| Output E nergy (Capacitive Load per Cycle) | W | 5.0 | mJ |
| Current S ense and Voltage Feedback Inputs | Vin | - 0.3 to + 5.5 | V |
| E rror Amp Output S ink Current | IO | 10 | mA |
| Power Dis s ipation and Thermal Characteris tics Dis s ipation @ TA = 25°C Maximum Power Thermal R es is tance, Junction-to-Air N S uffix, P las tic P ackage Maximum Power Dis s ipation @ TA = 25°C Thermal R es is tance, Junction-to-Air |
PD R QJA PD R QJA |
862 145 1.25 100 |
mW °C/W W °C/W |
| Operating Junction Temperature | TJ | + 150 | °C |
| Operating Ambient Temperature | TA | 0 to + 70 | °C |
| S torage Temperature R ange | Ts tg | - 65 to + 150 | °C |
1. Maximum P ackage power dis s ipation limits mus t be observed.
TD3843A Features
• Low Start Up Current
• Maximum Duty Clamp
• UVLO With Hysteresis
• Operating Frequency Up To 500KHz
• Maximum Duty Clamp
• UVLO With Hysteresis
• Operating Frequency Up To 500KHz
TD3843A Connection Diagram
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