tl1451a is an integrated circuit produced by texas instruments. It is mainly used for power supply control and supports pwm control circuits.
The TL1451A is a single monolithic chip that contains the functions required to build two pulse-width-modulation (PWM) control circuits. It is designed primarily for power-supply control and includes an on-chip 2.5-V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, undervoltage lockout circuitry, and dual common-emitter output transistor circuits. The TL1451AQ-Q1 is characterized for operation from −40°C to 125°C.
This datasheet (SGLS304, June 2005) presents the TL1451A-Q1 feature list, functional block diagram, absolute maximum ratings, recommended operating conditions, and electrical characteristics for the reference, undervoltage lockout, short-circuit protection control, oscillator, and dead-time control sections. The available PW package device is the TL1451AQPWRQ1 in a TSSOP package, supplied left-end taped and reeled.
| Supply voltage | 3.6 V to 50 V |
|---|---|
| Operating free-air temperature range | −40°C to 125°C |
| Oscillator frequency | 1 kHz to 500 kHz |
| Internal reference supply | 2.5 V |
| Collector output current | 20 mA |
| Collector output voltage | 50 V |
| Package | TSSOP (PW) |
| Qualification | AEC-Q100 |
It is a single monolithic chip containing the functions needed to build two PWM control circuits, intended primarily for power-supply control.
The recommended supply voltage range is 3.6 V to 50 V.
It is characterized for operation from −40°C to 125°C.
The oscillator frequency is specified up to 500 kHz.