TL1454ACPWR
ActiveDUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT
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TL1454ACPWR
ActiveDUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT
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Technical Specifications
Parameters and characteristics for this part
| Specification | TL1454ACPWR |
|---|---|
| Clock Sync | False |
| Control Features | Frequency Control, Dead Time Control |
| Duty Cycle (Max) [Max] | 100 % |
| Frequency - Switching [Max] | 2 MHz |
| Frequency - Switching [Min] | 50 kHz |
| Function | Step-Up, Step-Up/Step-Down, Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 85 C |
| Operating Temperature [Min] | -20 °C |
| Output Configuration | Positive, Isolation Capable |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 16-TSSOP |
| Package / Case [x] | 0.173 in |
| Package / Case [y] | 4.4 mm |
| Supplier Device Package | 16-TSSOP |
| Synchronous Rectifier | True |
| Topology | Boost, Flyback, Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 20 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 3.6 V |
TL1454A Series
Dual-Channel Pulse-Width-Modulation (PWM) Control Circuit
| Part | Output Type | Output Phases | Clock Sync | Operating Temperature [Min] | Operating Temperature [Max] | Number of Outputs | Function | Output Configuration | Topology | Package / Case | Package / Case [x] | Package / Case [y] | Duty Cycle (Max) [Max] | Frequency - Switching [Max] | Frequency - Switching [Min] | Synchronous Rectifier | Supplier Device Package | Control Features | Mounting Type | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Package / Case [custom] | Package / Case [custom] | Package / Case | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Texas Instruments | Transistor Driver | 1 | -20 °C | 85 C | 2 | Step-Down Step-Up Step-Up/Step-Down | Isolation Capable Positive | Boost Buck Flyback | 16-SOIC | 0.154 in | 3.9 mm | 100 % | 2 MHz | 50 kHz | 16-SOIC | Dead Time Control Frequency Control | Surface Mount | 20 V | 3.6 V | ||||||
Texas Instruments | Transistor Driver | 1 | -20 °C | 85 C | 2 | Step-Down Step-Up Step-Up/Step-Down | Isolation Capable Positive | Boost Buck Flyback | 16-SOIC | 0.154 in | 3.9 mm | 100 % | 2 MHz | 50 kHz | 16-SOIC | Dead Time Control Frequency Control | Surface Mount | 20 V | 3.6 V | ||||||
Texas Instruments | Transistor Driver | 1 | -20 °C | 85 C | 2 | Step-Down Step-Up Step-Up/Step-Down | Isolation Capable Positive | Boost Buck Flyback | 16-TSSOP | 0.173 in | 4.4 mm | 100 % | 2 MHz | 50 kHz | 16-TSSOP | Dead Time Control Frequency Control | Surface Mount | 20 V | 3.6 V | ||||||
Texas Instruments | Transistor Driver | 1 | -20 °C | 85 C | 2 | Step-Down Step-Up Step-Up/Step-Down | Isolation Capable Positive | Boost Buck Flyback | 16-SOIC | 0.154 in | 3.9 mm | 100 % | 2 MHz | 50 kHz | 16-SOIC | Dead Time Control Frequency Control | Surface Mount | 20 V | 3.6 V | ||||||
 Texas Instruments | Transistor Driver | 1 | -20 °C | 85 C | 2 | Step-Down Step-Up Step-Up/Step-Down | Isolation Capable Positive | Boost Buck Flyback | 16-SSOP | 100 % | 2 MHz | 50 kHz | 16-SSOP | Dead Time Control Frequency Control | Surface Mount | 20 V | 3.6 V | 0.209 in | 5.3 mm | ||||||
 Texas Instruments | Transistor Driver | 1 | -20 °C | 85 C | 2 | Step-Down Step-Up Step-Up/Step-Down | Isolation Capable Positive | Boost Buck Flyback | 16-SSOP | 100 % | 2 MHz | 50 kHz | 16-SSOP | Dead Time Control Frequency Control | Surface Mount | 20 V | 3.6 V | 0.209 in | 5.3 mm | ||||||
Texas Instruments | 16-SOIC | 0.154 in | 3.9 mm | 16-SOIC | Surface Mount | ||||||||||||||||||||
 Texas Instruments | 16-DIP | 16-PDIP | Through Hole | 0.3 in | 7.62 mm |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 6.17 | |
| Digi-Reel® | 1 | $ 6.17 | ||
| Tape & Reel (TR) | 2000 | $ 3.10 | ||
| Texas Instruments | LARGE T&R | 1 | $ 4.86 | |
| 100 | $ 3.96 | |||
| 250 | $ 3.11 | |||
| 1000 | $ 2.64 | |||
Description
General part information
TL1454A Series
The TL1454A is a dual-channel pulse-width-modulation (PWM) control circuit, primarily intended for low-power, dc/dc converters. Applications include LCD displays, backlight inverters, notebook computers, and other products requiring small, high-frequency, dc/dc converters.
Each PWM channel has its own error amplifier, PWM comparator, dead-time control comparator, and MOSFET driver. The voltage reference, oscillator, undervoltage lockout, and short-circuit protection are common to both channels.
Channel 1 is configured to drive n-channel MOSFETs in step-up or flyback converters, and channel 2 is configured to drive p-channel MOSFETs in step-down or inverting converters. The operating frequency is set with an external resistor and an external capacitor, and dead time is continuously adjustable from 0 to 100% duty cycle with a resistive divider network. Soft start can be implemented by adding a capacitor to the dead-time control (DTC) network. The error-amplifier common-mode input range includes ground, which allows the TL1454A to be used in ground-sensing battery chargers as well as voltage converters.
Documents
Technical documentation and resources