Allegro MicroSystems Inc. Adjustable Freq. Buck Or Buck/Boost Pre- Reg A4411KLVTR-T

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Adjustable Freq. Buck Or Buck/Boost Pre- Reg - A4411KLVTR-T - Allegro MicroSystems Inc.
Manchester, NH, United States
Adjustable Freq. Buck Or Buck/Boost Pre- Reg
A4411KLVTR-T
Adjustable Freq. Buck Or Buck/Boost Pre- Reg A4411KLVTR-T
The A4411 is a power management IC that can be configured as a buck or buck/boost pre-regulator to efficiently convert automotive battery voltages into a tightly regulated intermediate voltage complete with control, diagnostics, and protections. The output of the pre-regulator supplies a 5 V/150 mAMAX LDO for “local” sensors (V5SNR), a 5 V / 200 mAMAX LDO for communications (V5CAN), a 5 V / 120 mAMAX tracking/ protected LDO for remote sensors (V5P), and a 0.8 to 3.3 V / 800 mAMAX adjustable synchronous buck regulator (ADJ). Designed to supply CAN or microprocessor power supplies in high-temperature environments, the A4411 is ideal for underhood applications. The A4411 can be enabled by its logic level (ENB) or highvoltage (ENBAT) input. The A4411 includes a TRACK pin to set the reference of the V5P tracking regulator to either V5SNR or the buck FBADJ pin, so the A4411 can be adapted across multiple platforms with different sensors and supply rails. Diagnostic outputs from the A4411 include a power-on-reset output (NPOR) with a fixed delay, an ENBAT status output, and a Power OK output for the 5 V LDOs (POK5V). Dual bandgaps, one for regulation and one for fault checking, improve long-term reliability of the A4411. The A4411 contains a Pulse-Width Window Watchdog (PWWD) that can be programmed to detect pulse widths from 1 to 2 ms (WDADJ). The watchdog has an activation delay that scales with the pulse-width setting to accommodate processor startup. The tolerance of the Watchdog’s Window can be set to ±8%, ±13%, or ±18% using the WDTOL pin. The watchdog has an active-low enable pin (WDENn) to facilitate initial factory programming or field reflash programming. Protection features include under- and overvoltage lockout on all four CPU supply rails. In case of a shorted output, all linear regulators feature foldback overcurrent protection. In addition, the V5P output is protected from a short-to-battery event. Both switching regulators include pulse-by-pulse current limit, hiccup mode short-circuit protection, LX short circuit protection, missing asynchronous diode protection (VREG only), and thermal shutdown. The A4411 is supplied in a low-profile 38-lead eTSSOP package (suffix “LV”) with exposed power pad.

The A4411 is a power management IC that can be configured as a buck or buck/boost pre-regulator to efficiently convert automotive battery voltages into a tightly regulated intermediate voltage complete with control, diagnostics, and protections. The output of the pre-regulator supplies a 5 V/150 mAMAX LDO for “local” sensors (V5SNR), a 5 V / 200 mAMAX LDO for communications (V5CAN), a 5 V / 120 mAMAX tracking/ protected LDO for remote sensors (V5P), and a 0.8 to 3.3 V / 800 mAMAX adjustable synchronous buck regulator (ADJ). Designed to supply CAN or microprocessor power supplies in high-temperature environments, the A4411 is ideal for underhood applications.

The A4411 can be enabled by its logic level (ENB) or highvoltage (ENBAT) input. The A4411 includes a TRACK pin to set the reference of the V5P tracking regulator to either V5SNR or the buck FBADJ pin, so the A4411 can be adapted across multiple platforms with different sensors and supply rails. Diagnostic outputs from the A4411 include a power-on-reset output (NPOR) with a fixed delay, an ENBAT status output, and a Power OK output for the 5 V LDOs (POK5V). Dual bandgaps, one for regulation and one for fault checking, improve long-term reliability of the A4411.

The A4411 contains a Pulse-Width Window Watchdog (PWWD) that can be programmed to detect pulse widths from 1 to 2 ms (WDADJ). The watchdog has an activation delay that scales with the pulse-width setting to accommodate processor startup. The tolerance of the Watchdog’s Window can be set to ±8%, ±13%, or ±18% using the WDTOL pin. The watchdog has an active-low enable pin (WDENn) to facilitate initial factory programming or field reflash programming.

Protection features include under- and overvoltage lockout on all four CPU supply rails. In case of a shorted output, all linear regulators feature foldback overcurrent protection. In addition, the V5P output is protected from a short-to-battery event. Both switching regulators include pulse-by-pulse current limit, hiccup mode short-circuit protection, LX short circuit protection, missing asynchronous diode protection (VREG only), and thermal shutdown.

The A4411 is supplied in a low-profile 38-lead eTSSOP package (suffix “LV”) with exposed power pad.

Supplier's Site Datasheet
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - Linear + Switching - A4411KLVTR-T - Shenzhen Shengyu Electronics Technology Limited
Futian, China
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - Linear + Switching
A4411KLVTR-T
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - Linear + Switching A4411KLVTR-T
IC REG QD BUCK/BST/LNR 38ETSSOP

IC REG QD BUCK/BST/LNR 38ETSSOP

Supplier's Site
Voltage Regulators - Linear + Switching - 620-1746-2-ND - DigiKey
Thief River Falls, MN, United States
Voltage Regulators - Linear + Switching
620-1746-2-ND
Voltage Regulators - Linear + Switching 620-1746-2-ND
PMIC - Voltage Regulators - Linear + Switching 4 Output Step-Down (Buck) (1) Synchronous or Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (3) 250kHz ~ 2.4MHz 38-eTSSOP

PMIC - Voltage Regulators - Linear + Switching 4 Output Step-Down (Buck) (1) Synchronous or Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (3) 250kHz ~ 2.4MHz 38-eTSSOP

Supplier's Site Datasheet
Voltage Regulators - Linear + Switching - A4411KLVTR-T - Quarktwin Technology Ltd.
Shenzhen, Guangdong, China
Voltage Regulators - Linear + Switching
A4411KLVTR-T
Voltage Regulators - Linear + Switching A4411KLVTR-T
PMIC - Voltage Regulators - Linear Switching 4 Output Step-Down (Buck) (1) Synchronous or Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (3) 250kHz ~ 2.4MHz 38-eTSSOP

PMIC - Voltage Regulators - Linear Switching 4 Output Step-Down (Buck) (1) Synchronous or Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (3) 250kHz ~ 2.4MHz 38-eTSSOP

Supplier's Site Datasheet
PMIC - PMIC - Voltage Regulators - Linear + Switching - A4411KLVTR-T - 858950-A4411KLVTR-T - Win Source Electronics
Yishun, Singapore
PMIC - PMIC - Voltage Regulators - Linear + Switching - A4411KLVTR-T
858950-A4411KLVTR-T
PMIC - PMIC - Voltage Regulators - Linear + Switching - A4411KLVTR-T 858950-A4411KLVTR-T
Manufacturer: Allegro MicroSystems, LLC Win Source Part Number: 858950-A4411KLVTR-T Series: Automotive, AEC-Q100 Operating Temperature Range: -40°C ~ 135°C Features: PMIC - Voltage Regulators - Linear Switching 4 Output Step-Down (Buck) (1) Synchronous or Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (3) 250kHz ~ 2.4MHz 38-eTSSOP Package: 38-TFSOP (0.173", 4.40mm Width) Exposed Pad Package: Reel - TR Mounting: Surface Mount Family Name: A4411 Categories: Integrated Circuits (ICs) Case / Package: 38-eTSSOP ECCN: EAR99 Popularity: Medium Fake Threat In the Open Market: 46 pct. Supply and Demand Status: Limited Quantity per package: 8000 MSL Level: 1 (Unlimited) Estimated Pruduction Lead Time: 7 Weeks REACH Status: REACH Unaffected HTSUS: 8542.39.0001 Other Part Number: 620-1746-6, 620-1746-1, 620-1746-2

Manufacturer: Allegro MicroSystems, LLC
Win Source Part Number: 858950-A4411KLVTR-T
Series: Automotive, AEC-Q100
Operating Temperature Range: -40°C ~ 135°C
Features: PMIC - Voltage Regulators - Linear Switching 4 Output Step-Down (Buck) (1) Synchronous or Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (3) 250kHz ~ 2.4MHz 38-eTSSOP
Package: 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
Package: Reel - TR
Mounting: Surface Mount
Family Name: A4411
Categories: Integrated Circuits (ICs)
Case / Package: 38-eTSSOP
ECCN: EAR99
Popularity: Medium
Fake Threat In the Open Market: 46 pct.
Supply and Demand Status: Limited
Quantity per package: 8000
MSL Level: 1 (Unlimited)
Estimated Pruduction Lead Time: 7 Weeks
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Other Part Number: 620-1746-6, 620-1746-1, 620-1746-2

Supplier's Site Datasheet
PMIC - Voltage Regulators - Linear + Switching - A4411KLVTR-T - Lingto Electronic Limited
Shenzhen, China
PMIC - Voltage Regulators - Linear + Switching
A4411KLVTR-T
PMIC - Voltage Regulators - Linear + Switching A4411KLVTR-T
IC REG QD BUCK/BST/LNR 38ETSSOP

IC REG QD BUCK/BST/LNR 38ETSSOP

Supplier's Site Datasheet

Technical Specifications

  Allegro MicroSystems Inc. Shenzhen Shengyu Electronics Technology Limited DigiKey Quarktwin Technology Ltd. Win Source Electronics Lingto Electronic Limited
Product Category IC Linear Voltage Regulators IC Switching Voltage Regulators IC Linear Voltage Regulators IC Linear Voltage Regulators IC Linear Voltage Regulators IC Linear Voltage Regulators
Product Number A4411KLVTR-T A4411KLVTR-T 620-1746-2-ND A4411KLVTR-T 858950-A4411KLVTR-T A4411KLVTR-T
Product Name Adjustable Freq. Buck Or Buck/Boost Pre- Reg Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - Linear + Switching Voltage Regulators - Linear + Switching Voltage Regulators - Linear + Switching PMIC - PMIC - Voltage Regulators - Linear + Switching - A4411KLVTR-T PMIC - Voltage Regulators - Linear + Switching
Regulator Type Low Dropout Standard; Low Dropout
Package Type Other; 38-Pin TSSOP Other; 38-TFSOP (0.173", 4.40mm Width) Exposed Pad Other; 38-TFSOP (0.173\", 4.40mm Width) Exposed Pad SSOP; Other; 38-eTSSOP
Life Cycle Stage Active Active Active
VIN 3.5 to 36 volts
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