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See Technical Specifications

TL1451ACN +BOM

3.6V to 50V dual channel controller with Wide input voltage range

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TL1451ACN
Datasheet:

TL1451ACN Datasheet (PDF)
Topology:

Boost, Buck, Flyback, Forward, SEPIC
Vin (min) (V):

3.6
Vin (max) (V):

50
Vout (min) (V):

1
EDA/CAD Models:

Request Free CAD Models for TL1451ACN

TL1451ACN General Description

The TL1451A incorporates on a single monolithic chip all the functions required in the construction of two pulse-width-modulation (PWM) control circuits. Designed primarily for power-supply control, the TL1451A contains 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 uncommitted output transistors provide common-emitter output capability for each controller. The internal amplifiers exhibit a common-mode voltage range from 1.04 V to 1.45 V. The dead-time control (DTC) comparator has no offset unless externally altered and can provide 0% to 100% dead time. The on-chip oscillator can be operated by terminating RT and CT. During low V_CC conditions, the undervoltage lockout control circuit feature locks the outputs off until the internal circuitry is operational.

The TL1451AC is characterized for operation from -20°C to 85°C. The TL1451AQ is characterized for operation from -40°C to 125°C. The TL1451AM is characterized for operation from -55°C to 125°C.

Key Features

Complete PWM Power Control Circuitry
Completely Synchronized Operation
Internal Undervoltage Lockout Protection
Wide Supply Voltage Range
Internal Short-Circuit Protection
Oscillator Frequency.500 kHz Max
Variable Dead Time Provides Control Over Total Range
Internal Regulator Provides a Stable 2.5-V Reference Supply
Available in Q-Temp Automotive
HighRel Automotive Applications
Configuration Control / Print Support
Qualification to Automotive Standards

Specifications

Topology	Boost, Buck, Flyback, Forward, SEPIC	Vin (min) (V)	3.6
Vin (max) (V)	50	Vout (min) (V)	1
Vout (max) (V)	50	Regulated outputs (#)	2
Switching frequency (min) (kHz)	50	Switching frequency (max) (kHz)	500
Iq (typ) (mA)	1.7	Features	Nonsynchronous rectification
Duty cycle (max) (%)	100	Rating	Automotive, Catalog
Operating temperature range (°C)	-20 to 85, -40 to 125, 0 to 0	Type	Controller
feature-topology		feature-number-of-outputs
feature-output-voltage-v	1	feature-minimum-output-current-a
feature-maximum-output-current-a		feature-minimum-input-voltage-v	3.6
feature-maximum-switching-frequency-khz	500	feature-maximum-input-voltage-v
feature-operating-supply-voltage-v		feature-maximum-supply-current-ma
feature-maximum-power-dissipation-mw		feature-minimum-switching-frequency-khz
feature-synchronous-rectifier		feature-synchronous-clock
feature-packaging	Tube	feature-rad-hard
feature-pin-count	16	feature-cecc-qualified	No
feature-esd-protection		feature-military	No
feature-aec-qualified	No	feature-aec-qualified-number
feature-eccn-code	EAR99	feature-svhc	No
feature-svhc-exceeds-threshold	No