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Infineon Technologies AG DC-DC Converters, Switching Regulators TLF50281EL

Description
The wide input voltage range from 4.75 to 45 V makes the TLF50281EL suitable for a wide variety of applications. The device is designed to be used under harsh automotive environmental conditions. The switching frequency of nominal 2.2 MHz allows the use of small and cost-effective inductors and capacitors, resulting in a low, predictable output voltage ripple and in minimized consumption of board space. In light load condition the device operates in Pulse Frequency Modulation (PFM) to optimize the efficiency. Between the single pulses, all internal controlling circuitry is switched off to reduce the internal power consumption. The voltage regulation loop provides an excellent line and load regulation, the stability of the loop is ensured by an internal compensation network. This compensation network combined with a current mode regulation control guarantees a highly effective line transient rejection. During start-up the integrated soft-start limits the in rush current peak and prevents from an output voltage overshoot. The TLF50281EL includes protection features such as a cycle-by-cycle current limitation, over-temperature shutdown and input under voltage lockout. The enable function, in shutdown mode with less than 2 μA current consumption, enables easy power management in battery-powered systems. In addition, the TLF50281EL is providing a reset output with adjustable threshold and a timeout watchdog with adjustable timing to monitor and control the µC. Summary of Features 500 mA step down voltage regulator 5 V Output voltage ± 2% output voltage tolerance Low quiescent current (less than 45μA at nominal battery voltage) Current mode PWM regulation PFM mode for light load current Input voltage range from 4.75V to 45V Integrated power transistor 2.2 MHz switching frequency 100% Duty cycle Synchronization input Very low shutdown current consumption (<2 μA) Integrated compensation Integrated soft-start function Reset generator with adjustable threshold Watchdog with adjustable timing Input undervoltage lockout Suited for automotive applications: Tj = -40 °C to +150 °C Green Product (RoHS compliant) AEC Qualified Benefits Low current consumption for permanently Vbat-connnected systems High switching frequency reduces value and size of coil and output capacitor Low drop-out operation due to 100% DC No external components required for compensation and soft-start Flexibility in setting reset threshold Flexibility in setting watchdog timing Family Overview For an overview of other available options in this family please click here.
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Suppliers

Company
Product
Description
Supplier Links
DC-DC Converters, Switching Regulators - TLF50281EL - Infineon Technologies AG
Neubiberg, Germany
DC-DC Converters, Switching Regulators
TLF50281EL
DC-DC Converters, Switching Regulators TLF50281EL
The wide input voltage range from 4.75 to 45 V makes the TLF50281EL suitable for a wide variety of applications. The device is designed to be used under harsh automotive environmental conditions. The switching frequency of nominal 2.2 MHz allows the use of small and cost-effective inductors and capacitors, resulting in a low, predictable output voltage ripple and in minimized consumption of board space. In light load condition the device operates in Pulse Frequency Modulation (PFM) to optimize the efficiency. Between the single pulses, all internal controlling circuitry is switched off to reduce the internal power consumption. The voltage regulation loop provides an excellent line and load regulation, the stability of the loop is ensured by an internal compensation network. This compensation network combined with a current mode regulation control guarantees a highly effective line transient rejection. During start-up the integrated soft-start limits the in rush current peak and prevents from an output voltage overshoot. The TLF50281EL includes protection features such as a cycle-by-cycle current limitation, over-temperature shutdown and input under voltage lockout. The enable function, in shutdown mode with less than 2 μA current consumption, enables easy power management in battery-powered systems. In addition, the TLF50281EL is providing a reset output with adjustable threshold and a timeout watchdog with adjustable timing to monitor and control the µC. Summary of Features 500 mA step down voltage regulator 5 V Output voltage ± 2% output voltage tolerance Low quiescent current (less than 45μA at nominal battery voltage) Current mode PWM regulation PFM mode for light load current Input voltage range from 4.75V to 45V Integrated power transistor 2.2 MHz switching frequency 100% Duty cycle Synchronization input Very low shutdown current consumption (<2 μA) Integrated compensation Integrated soft-start function Reset generator with adjustable threshold Watchdog with adjustable timing Input undervoltage lockout Suited for automotive applications: Tj = -40 °C to +150 °C Green Product (RoHS compliant) AEC Qualified Benefits Low current consumption for permanently Vbat-connnected systems High switching frequency reduces value and size of coil and output capacitor Low drop-out operation due to 100% DC No external components required for compensation and soft-start Flexibility in setting reset threshold Flexibility in setting watchdog timing Family Overview For an overview of other available options in this family please click here.

The wide input voltage range from 4.75 to 45 V makes the TLF50281EL suitable for a wide variety of applications. The device is designed to be used under harsh automotive environmental conditions. The switching frequency of nominal 2.2 MHz allows the use of small and cost-effective inductors and capacitors, resulting in a low, predictable output voltage ripple and in minimized consumption of board space. In light load condition the device operates in Pulse Frequency Modulation (PFM) to optimize the efficiency. Between the single pulses, all internal controlling circuitry is switched off to reduce the internal power consumption. The voltage regulation loop provides an excellent line and load regulation, the stability of the loop is ensured by an internal compensation network. This compensation network combined with a current mode regulation control guarantees a highly effective line transient rejection. During start-up the integrated soft-start limits the in rush current peak and prevents from an output voltage overshoot. The TLF50281EL includes protection features such as a cycle-by-cycle current limitation, over-temperature shutdown and input under voltage lockout. The enable function, in shutdown mode with less than 2 μA current consumption, enables easy power management in battery-powered systems. In addition, the TLF50281EL is providing a reset output with adjustable threshold and a timeout watchdog with adjustable timing to monitor and control the µC.


Summary of Features

  • 500 mA step down voltage regulator
  • 5 V Output voltage
  • ± 2% output voltage tolerance
  • Low quiescent current (less than 45μA at nominal battery voltage)
  • Current mode PWM regulation
  • PFM mode for light load current
  • Input voltage range from 4.75V to 45V
  • Integrated power transistor
  • 2.2 MHz switching frequency
  • 100% Duty cycle
  • Synchronization input
  • Very low shutdown current consumption (<2 μA)
  • Integrated compensation
  • Integrated soft-start function
  • Reset generator with adjustable threshold
  • Watchdog with adjustable timing
  • Input undervoltage lockout
  • Suited for automotive applications: Tj = -40 °C to +150 °C
  • Green Product (RoHS compliant)
  • AEC Qualified

Benefits

  • Low current consumption for permanently Vbat-connnected systems
  • High switching frequency reduces value and size of coil and output capacitor
  • Low drop-out operation due to 100% DC
  • No external components required for compensation and soft-start
  • Flexibility in setting reset threshold
  • Flexibility in setting watchdog timing

Family Overview

For an overview of other available options in this family please click here.

Supplier's Site Datasheet
Integrated Circuits - TLF50281EL - LIXINC Electronics Co., Limited
Hong Kong, China
Integrated Circuits
TLF50281EL
Integrated Circuits TLF50281EL
TLF50281 - OPTIREG SWITCHERS (AU

TLF50281 - OPTIREG SWITCHERS (AU

Supplier's Site Datasheet
PMIC - Voltage Regulators - DC DC Switching Controllers - TLF50281EL - Nova Technology(HK) Co.,Ltd
Futian District, Shenzhen, China
PMIC - Voltage Regulators - DC DC Switching Controllers
TLF50281EL
PMIC - Voltage Regulators - DC DC Switching Controllers TLF50281EL
Regulator Output DC-DC Controller IC

Regulator Output DC-DC Controller IC

Supplier's Site Datasheet
Voltage Regulators - DC DC Switching Regulators - TLF50281EL - Quarktwin Technology Ltd.
Shenzhen, Guangdong, China
Voltage Regulators - DC DC Switching Regulators
TLF50281EL
Voltage Regulators - DC DC Switching Regulators TLF50281EL
Buck Switching Regulator IC Positive Fixed 5V 1 Output 500mA 14-LSSOP (0.154", 3.90mm Width) Exposed Pad

Buck Switching Regulator IC Positive Fixed 5V 1 Output 500mA 14-LSSOP (0.154", 3.90mm Width) Exposed Pad

Supplier's Site Datasheet
Yishun, Singapore
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators
1357092-TLF50281EL
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators 1357092-TLF50281EL
Win Source Part Number: 1357092-TLF50281EL Category: Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators Temperature Range - Operating: -40°C ~ 150°C (TJ) ECCN: EAR99 Fake Threat In the Open Market: 51 pct. Mfr: Infineon Technologies Package: Bulk Product Status: Active Package / Case: 14-LSSOP (0.154", 3.90mm Width) Exposed Pad Supplier Device Package: PG-SSOP-14-1 Base Product Number: TLF50281 Mounting Type: Surface Mount HTSUS: 8542.39.0001 Function: Step-Down Output Type: Fixed Output Configuration: Positive Voltage - Input (Max): 45V Voltage - Output (Min/Fixed): 5V Current - Output: 500mA Topology: Buck Number of Outputs: 1 Voltage - Input (Min): 4.75V Frequency - Switching: 2.2MHz Synchronous Rectifier: No

Win Source Part Number: 1357092-TLF50281EL
Category: Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators
Temperature Range - Operating: -40°C ~ 150°C (TJ)
ECCN: EAR99
Fake Threat In the Open Market: 51 pct.
Mfr: Infineon Technologies
Package: Bulk
Product Status: Active
Package / Case: 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
Supplier Device Package: PG-SSOP-14-1
Base Product Number: TLF50281
Mounting Type: Surface Mount
HTSUS: 8542.39.0001
Function: Step-Down
Output Type: Fixed
Output Configuration: Positive
Voltage - Input (Max): 45V
Voltage - Output (Min/Fixed): 5V
Current - Output: 500mA
Topology: Buck
Number of Outputs: 1
Voltage - Input (Min): 4.75V
Frequency - Switching: 2.2MHz
Synchronous Rectifier: No

Supplier's Site Datasheet

Technical Specifications

  Infineon Technologies AG LIXINC Electronics Co., Limited Nova Technology(HK) Co.,Ltd Quarktwin Technology Ltd. Win Source Electronics
Product Category IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators
Product Number TLF50281EL TLF50281EL TLF50281EL TLF50281EL 1357092-TLF50281EL
Product Name DC-DC Converters, Switching Regulators Integrated Circuits PMIC - Voltage Regulators - DC DC Switching Controllers Voltage Regulators - DC DC Switching Regulators Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators
Configuration / Function Buck Buck
Package Type Other; PG-SSOP-14 Other; Bulk SSOP; Other; 14-LSSOP (0.154\", 3.90mm Width) Exposed Pad SSOP; Other; Bulk
Life Cycle Stage active and preferred Active Active
Operating Temperature -40 to 150 C (-40 to 302 F) -40 to 150 C (-40 to 302 F) -40 to 150 C (-40 to 302 F)
Output Voltage Type Fixed; Fixed Fixed; Fixed
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