Allegro MicroSystems A4491EESTR-T Microcontrollers
Switching Regulator, Current-mode, 1.5A, 630kHz Switching Freq-Max, 4 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, MO-220WGGD, QFN-20
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
A4491EESTR-T
Detailed Description
Switching Regulator, Current-mode, 1.5A, 630kHz Switching Freq-Max, 4 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, MO-220WGGD, QFN-20
Package
20-WFQFN Exposed Pad
Lifecycle Status
Active
Datasheet
A4491EESTR-T Datasheet
Quick Jump:
Technical Specifications
Allegro MicroSystems A4491EESTR-T Microcontrollers technical specifications.
General
Series
A4491
RoHS
Yes
Package / Case
20-WFQFN Exposed Pad
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
4.3 V
Lifecycle Status
Active
Output Type
Adjustable
Max Input Voltage
23V
Switching Frequency
550kHz
Alternate Parts Comparison (A4491EESTR-T vs A3941KLPTR-T vs A4988SETTR-T vs A5984GLPTR-T)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 20-WFQFN Exposed Pad | 28-TSSOP | 28-VFQFN Exposed Pad | 24-TSSOP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 150°C (TA) | -20°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) |
| Supply Voltage | 4.3 V | 5.5V ~ 50V | 3V ~ 5.5V | 8V ~ 40V |
| Lifecycle Status | Active | Active | Active | Active |
| Function | Step-Down | Controller - Commutation, Direction Management | Driver - Fully Integrated, Control and Power Stage | Driver - Fully Integrated, Control and Power Stage |
| Output Configuration | Positive | Pre-Driver - Half Bridge (2) | Half Bridge (4) | Half Bridge (4) |
| Output Current | 4.5 A | -- | 2A | 2A |
| Interface | -- | PWM | Logic | Logic |
| Applications | -- | Automotive | General Purpose | General Purpose |
| Technology | -- | Power MOSFET | DMOS | DMOS |
| Action |
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