Overview
| Information | Low Voltage Step Down PWM Controller |
|---|---|
| Package | TSSOP-14 |
| IQ (µA) | 500 |
| Special Features | Enable, Synchronous Rectification, Thermal Shutdown, UVLO, Soft Start Built-in, Adustable Current Limit |
| VIN MIN (V) | 3 |
| VIN MAX (V) | 5.5 |
| VOUT MIN (V) | 0.8 |
| VOUT MAX (V) | 4.5 |
| Frequency (kHz) | 300 |
| Efficiency (%) | 95 |
| Control Mode | Voltage Mode PWM |
| Operating Temp Range (°C) | -40 to 85, -40 to 105 |
| Max Rec. Output Current (A) | 10 |
The SP6128A is a fixed frequency, voltage mode, synchronous PWM controller designed to work from a single 5V or 3.3V input supply, providing excellent AC and DC regulation for high efficiency power conversion. Requiring only few external components, the SP6128A packaged in a 14-pin TSSOP, is especially suited for low voltage applications where cost, small size and high efficiency are critical. The operating frequency is internally set to 300kHz, allowing small inductor values and minimizing PC board space. The SP6128A drives two N-channel power MOSFETs for improved efficiency and includes an accurate 0.8V reference for low output voltage applications.
- Optimized for single supply, 3V to 5.5V applications
- High efficiency: greater than 95% possible
- Discontinuous startup for pre-charged output
- Accurate fixed 300kHz frequency operation
- Fast transient response
- Internal soft-start circuit
- Accurate 0.8V reference allows low output voltages
- Resistor programmable output voltage
- Resistor programmable overcurrent Threshold
- Loss-less current limit with high side RDS(ON) sensing
- Hiccup mode current limit protection
- Dual N-channel MOSFET synchronous driver
- Quiescent current: 500μA, 30μA in shutdown
- 14 pin TSSOP
Documentation & Design Tools
Quality & RoHS
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | Buy Now | Order Samples | PDN |
|---|---|---|---|---|---|---|---|---|
| SP6128ACY | TSSOP14 | 0 | 70 | OBS | ||||
| SP6128ACY/TR | TSSOP14 | 0 | 70 | OBS | ||||
| SP6128ACY-L | TSSOP14 | 0 | 70 | OBS | SP6128AEY-L | |||
| SP6128ACY-L/TR | TSSOP14 | 0 | 70 | OBS | SP6128AEY-L/TR | |||
| SP6128AEY | TSSOP14 | -40 | 85 | OBS | ||||
| SP6128AEY/TR | TSSOP14 | -40 | 85 | OBS | ||||
| SP6128AEY-L | TSSOP14 | -40 | 85 | OBS | SP6128AEY-L/TR | |||
| SP6128AEY-L/TR | TSSOP14 | -40 | 85 | Active | Order | |||
| SP6128AHY | TSSOP14 | -40 | 105 | OBS | ||||
| SP6128AHY/TR | TSSOP14 | -40 | 105 | OBS | ||||
| SP6128AHY-L | TSSOP14 | -40 | 105 | OBS | SP6128AHY-L/TR | |||
| SP6128AHY-L/TR | TSSOP14 | -40 | 105 | OBS | SP6128AEY-L/TR | |||
| SP6128ASEY-L | TSSOP14 | -40 | 85 | OBS | SP6128AEY-L | |||
| SP6128ASEY-L/TR | TSSOP14 | -40 | 85 | OBS | SP6128AEY-L/TR | |||
| SP6128CY | TSSOP14 | 0 | 70 | OBS | ||||
| SP6128CY/TR | TSSOP14 | 0 | 70 | OBS | ||||
| SP6128EY | TSSOP14 | 0 | 70 | OBS | ||||
| SP6128EY/TR | TSSOP14 | 0 | 70 | OBS | ||||
| SP6128EB | Board | 0 | 85 | OBS |
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Packaging
Notifications
FAQs & Support
Search our list of FAQs for answers to common technical questions.
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Submit a Technical Support Question As a New Question
In this example, we looked for XRA1201. Click on part number header or on the link at the bottom of the result. This brings you to the product page. For example:
Click on Parts & Purchasing, highlighted with the blue arrow above. The screen changes to:
Notice the status column and the “Show obsolete parts” link. A legend tells you the definition of the different statuses. Click on the “Show obsolete parts” link to see EOL or OBS part numbers along with the Active part numbers, the legend still present:
Another method to find out if a part is OBS or EOL is to click on SUPPORT at the top:
And then Product Change Notifications:
Type the part into the search, and click on one of the part numbers from the drop down menu. Then you can look for the Product Discontinuation Notice, which generally is at the top of the list, for example:
If you see this, it tells you that this particular orderable part has been discontinued and when the last order date is, or was. If you click on the file, then you can view the notice we sent about this if you purchased the part in the recent past. It may also advise of a replacement part. When an orderable part first becomes discontinued, Product Discontinuation Notices are sent are sent to those who have purchased the parts in the recent past, if purchased directly, with a dated opportunity to place a last order.