Semiconductors
Passive Components
Sensors
Power
Optoelectronics
For Reference Only
| Part Number | A4491EESTR-T |
| OEMstron Part # | A4491EESTR-T |
| Manufacturer | Allegro MicroSystems, LLC |
| Category | Semiconductors › Power Management ICs › Voltage Regulators - DC DC Switching Regulators |
| Description | IC REG BUCK ADJ TRPL 20QFN |
| Lifecycle | Active |
| RoHS | No RoHS Information |
| EDA/CAD Models | A4491EESTR-T PCB Footprint and Symbol |
| Warehouses | USA, Europe, China, Hong Kong SAR |
| Estimated Delivery | Jan 20 - Jan 25 (Choose Expedited Shipping) |
| Warranty | Up to 1 year [Limited-Warranty]* |
| Payment |  |
| Shipping |  |
A4491EESTR-T Specifications
| Part Number | A4491EESTR-T | |
| Brand | Allegro MicroSystems, LLC | |
| Lifecycle | Active | |
| RoHS | No RoHS Information | |
| Product Line | Semiconductors | |
| Category | Power Management ICs | |
| Subcategory | Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | Allegro MicroSystems, LLC | |
| Series | - | |
| Function | Step-Down | |
| Output Configuration | Positive | |
| Topology | Buck | |
| Output Type | Adjustable | |
| Number of Outputs | 3 | |
| Voltage - Input (Min) | 4.5V | |
| Voltage - Input (Max) | 23V | |
| Voltage - Output (Min/Fixed) | 0.8V | |
| Voltage - Output (Max) | 20.7V | |
| Current - Output | - | |
| Frequency - Switching | 550kHz | |
| Synchronous Rectifier | No | |
| Operating Temperature | -40°C ~ 85°C (TA) | |
| Mounting Type | Surface Mount | |
| Package / Case | 20-WFQFN Exposed Pad | |
| Supplier Device Package | 20-QFN (4x4) |
A4491EESTR-T Documents
Industry Leaders in Quality
Cooperation comes from trust,
And trust is based on quality.
Global Supply Chains - Reliable and Authorized Distributor Resources
| Part Number | Description | Stock |
|
A4491EESTR-T D# V79:2366_17788111 Allegro MicroSystems LLC |
Conv DC-DC 4.5V to 23V Step Down Single-Out 4.5A 20-Pin QFN EP T/R RoHS: Compliant
|
Americas - 51355 |
| Part Number | Description | Stock |
|
A4491EESTR-T D# A4491EESTR-T Allegro MicroSystems LLC |
Conv DC-DC 3-OUT Step Down 4.5V to 23V 20-Pin QFN T/R (Alt: A4491EESTR-T) |
Europe - 7496 |
| Part Number | Description | Stock |
|
A4491EESTR-T Allegro MicroSystems LLC |
IC REG BUCK ADJ TRPL 20QFN |
18000 |
| Part Number | Description | Stock |
|
A4491EESTR-T D# 2156-A4491EESTR-T-ND Rochester Electronics LLC |
TRIPLE OUTPUT STEP DOWN SWITCHIN |
47600 In Stock |
| Part Number | Description | Stock |
|
A4491EESTR-T Allegro MicroSystems LLC |
In stock shipping within 2days |
19182 |
| Part Number | Description | Stock |
|
A4491EESTRT Allegro MicroSystems LLC |
OEM/CM QUOTES ONLY | NO BROKERS |
2071 |
| Part Number | Description | Stock |
|
A4491EESTR-T Allegro MicroSystems LLC |
OEM/CM Immediate delivery |
23422 |
| Part Number | Description | Stock |
|
A4491EESTR-T D# XSKDRABS0061390 Allegro MicroSystems LLC |
TRIPLE OUTPUT STEP DOWN SWITCHING REGULATOR |
5996 |
| Part Number | Description | Stock |
|
A4491EESTR-T Allegro MicroSystems LLC |
SWITCHING REGULATOR, CURRENT-MODE, 1.5A, 630KHZ SWITCHING FREQ-MAX |
1200 |
| Part Number | Description | Stock |
|
A4491EESTR-T Allegro MicroSystems LLC |
A4491 - Triple Output Step Down Switching Regulator RoHS: Compliant
|
47600 |
| Part Number | Description | Stock |
|
A4491EESTRT Allegro MicroSystems LLC |
OEM/CM ONLY |
19394 |
| Part Number | Description | Stock |
|
A4491EESTR-T Allegro MicroSystems LLC |
IN stock Immediate delivery |
23407 |
| Part Number | Description | Stock |
|
A4491EESTR-T Allegro MicroSystems LLC |
shipping today |
585 |
| Part Number | Description | Stock |
|
A4491EESTR-T D# 26115925 Allegro MicroSystems LLC |
Conv DC-DC 4.5V to 23V Step Down Single-Out 4.5A 20-Pin QFN EP T/R RoHS: Compliant
|
Americas - 51355 |
| Part Number | Description | Stock |
|
A4491EESTR-T Allegro MicroSystems LLC |
IC REG BUCK ADJ TRPL 20QFN |
870 |
The Products You May Be Interested In
 |
XC9245A3LC7R-G | 400MA SYNCHRONOUS STEP-DOWN DCDC | 402 More on Order |
|
XC9258A27EER-G | 1A COT CONTROL SYNCHRONOUS STEP- | 195 More on Order |
|
XC9262A22C1R-G | ULTRA SMALL 1.5A COT CONTROL SYN | 211 More on Order |
 |
AP1530SL-13 | IC REG BUCK ADJUSTABLE 3A 8SOP | 406 More on Order |
 |
LT3686IDD#TRPBF | IC REG BUCK ADJ 1.2A 10DFN | 135 More on Order |
 |
TPS61222DCKR | IC REG BOOST 5V 200MA SC70-6 | 168206 More on Order |
|
XD9261B1MDER-Q | HISAT-COT CONTROL 1.5A SYNCHRONO | 129 More on Order |
 |
LT1375CN8#PBF | IC REG BUCK SEPIC ADJ 1.5A 8DIP | 435 More on Order |
 |
ISL8013AIRZ | IC REG BUCK ADJUSTABLE 3A 16QFN | 1441 More on Order |
 |
LT1070CT#PBF | IC REG MULT CONFG ADJ 5A TO220-5 | 794 More on Order |
|
XC9235B3LC4R-G | 600MA SYNCHRONOUS STEP-DOWN DCDC | 128 More on Order |
|
XD9261A1MDER-Q | HISAT-COT CONTROL 1.5A SYNCHRONO | 266 More on Order |
Quick Inquiry
| In Stock | 16,967 - More on Order |
|---|---|
| Quote Limit | No Limit |
| Lead-Time | Can Ship Immediately |
| Minimum | 1 |
Add to Shopping Cart
Pricing (USD)
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1 | $ 0.9038 | $ 0.9038 |
| 100 | $ 0.9038 | $ 90.3800 |
| 500 | $ 0.9038 | $ 451.9000 |
| 1000 | $ 0.9038 | $ 903.8000 |
| 2500 | $ 0.9038 | $ 2,259.5000 |
OEMstron will offer the most competitive prices for you, please refer to the quotations.
Contact Us
- CALL US
86-755-83232896
- SKYPE
- Message
Please feel free to contact us for details.
Our Certificates
