# Stmicroelectronics Dc/dc Conv, Buck, 300Khz, 150Deg C - L4978D

**Manufacturer:** STMICROELECTRONICS  
**MPN:** `L4978D`

The L4978D is a switching regulator from STMicroelectronics, capable of stepping down input voltages from 3.3 to 50 volts. It is available in quantities of 10 or 50 pieces.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | STMICROELECTRONICS |
| Manufacturer name | STMICROELECTRONICS |
| Manufacturer | STMICROELECTRONICS, ST MICROELECTRONICS, STMicroelectronics, Stmicroelectronics |
| CategoryL1 | Semiconductors - ICs |
| CategoryL2 | Power Management ICs - PMIC |
| CategoryL3 | Voltage Regulators |
| CategoryL4 | DC / DC Switching Regulators |
| Extra Product Name | Stmicroelectronics Dc/dc Conv, Buck, 300Khz, 150Deg C - L4978D |
| jsonUrlData | Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators > DC / DC Switching Regulators |
| moq | 1 |
| MPN | L4978D |
| multiple | 1 |
| qtyInStock | 66 |
| SKU | 25M9043 |
| tierMinQty1 | 1 |
| tierMinQty2 | 10 |
| tierMinQty3 | 25 |
| tierMinQty4 | 98 |
| tierMinQty5 | 147 |
| tierMinQty6 | 294 |
| tierMinQty7 | 539 |
| tierMinQty8 | 1029 |
| tierPrice1 | 1.3 |
| tierPrice2 | 1.3 |
| tierPrice3 | 1.3 |
| tierPrice4 | 1.3 |
| tierPrice5 | 1.3 |
| tierPrice6 | 1.3 |
| tierPrice7 | 1.3 |
| tierPrice8 | 1.3 |
| url | https://www.newark.com/25M9043?CMP=AFC-DATAALCHEMY |
| Part Number | L4978D |
| ASIN | B008QYBM68, B00MMUTQW4, B00MMUTRY6, B00MMUTT1W, B00MMUTU02, B00MMUTUYS, B01MRV63AU, B07346RTQV |
| AdultProduct | False |
| Asin | B008QYBM68, B00HKJ85CO, B00LVHQOJ2, B00LVHQPNM, B00LVHQR26, B00LVHQS0W, B00MEKHONU, B00MMUTQW4, B00MMUTRY6, B00MMUTT1W, B00MMUTU02, B00MMUTUYS, B011NIXVFI, B011NIY0IU, B011NIY3LE, B011NIY6OI, B01MRV63 |
| Autographed | False |
| Batteries_required | False |
| Binding | Electronics, Tools & Home Improvement |
| Brand | STMicroelectronics |
| Bullet_point | OutputCurrent-Max: 220 µA, OutputTypeRegulators: Adjustable, SwitchingFrequency-Max: 300 kHzOperatingTempRange: -40 to +150 °C; DutyCycleMax: 97 %; Efficiency: 87 %; NoofOutputs: 1; QuiescentCurrent:  |
| Case | 1, 10, 100, 5, 50 |
| Cat | Industrial & Scientific |
| CatId | 16310091 |
| CatTree | 16310091, 16310161, 306506011, 306831011, 306842011 |
| CatalogNumberList | MS 511-L4978D, MS 511-L4978D X1, MS 511-L4978D X10, MS 511-L4978D X100, MS 511-L4978D X5, MS 511-L4978D X50 |
| ClassificationId | 306506011, 306843011 |
| DisplayName | Communication Integrated Circuits, Industrial Electrical |
| Feature | <b>Price For:</b> Pack of 100<b>Order Unit:</b> Tape & Reel Full\xa01 <b>DC / DC Converter IC Case:</b>: SOIC <b>Input Voltage Max:</b>: 55 <b>Input Voltage Min:</b>: 8 <b>MSL:</b>: - <b>No. of Output |
| Generic_keyword | component, electric, electrical, electronic, eletric, regulators |
| Height | 1.968503935, 180, 243, 5.0, 500, 51, 56, 75 |
| Identifier | 4550015121383 |
| IdentifierType | EAN |
| IsDeadAsin | True |
| ItemClassification | BASE_PRODUCT |
| ItemName | ST MICROELECTRONICS L4978D Analog switching-regulators L4978 Series 55 V 220 uA 300 kHz Buck Through Hole Switching Regulator - SOIC-16-5 item(s), ST MICROELECTRONICS L4978D L4978 Series 55 V 220 uA 3 |
| Item_name | ST MICROELECTRONICS L4978D Analog switching-regulators L4978 Series 55 V 220 uA 300 kHz Buck Through Hole Switching Regulator - SOIC-16-5 item(s), ST MICROELECTRONICS L4978D L4978 Series 55 V 220 uA 3 |
| Item_package_quantity | 1 |
| Item_package_weight | 0.3 |
| Item_type_keyword | communication-integrated-circuits, electronic-components |
| Item_weight | 0.01, 0.2 |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Newark | 25M9043 | 1.3 | 1 | 66 | 1 |
| Radwell | L4978D | 2.41 | 1 | 19 | 1 |
| Future Electronics | 4106682 | 1.9593 | 1 | 63 | 1225 |
| Win Source | L4978D | 2.26 | 1 | 1688 | 15 |
| RS Delivers | 168-6456 | 3.212 | 1 | None | 49 |
| TME | L4978D |  |  | None | 1 |
| 4 Star Electronics | L4978D |  |  | None | 1 |
| AmazonSC | B07346RTQV |  |  | None | 1 |
| Digi-Key | 1506406 |  |  | None | 1 |
| Arrow | L4978D | 1.415 | 1 | 9 | 1 |
| Mouser | 511-L4978D | 3.41 | 1 | 1774 | 1 |
| RS Delivers | 686-8237 | 4.59 | 1 | 14 | 1 |
| RS Delivers | 686-8237P | 4.59 | 1 | 1155 | 1 |
| st.com | L4978D | 3.8 | 1 | None | 1 |
| Newark | 56P8360 |  |  | None | 1 |

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