Overview
| Information | Low Voltage Step Down PWM Controller |
|---|---|
| Max Rec. Output Current (A) | 10 |
| IQ (µA) | 500 |
| 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 |
| Special Features | Enable, Synchronous Rectification, Thermal Shutdown, UVLO, Soft Start Built-in, Adustable Current Limit |
| Operating Temp Range (°C) | -40 to 85, -40 to 105 |
| Package | TSSOP-14 |
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 | PDN |
|---|---|---|---|---|---|---|---|
| SP6128ACY | TSSOP14 | 0 | 70 | OBS | |||
| SP6128ACY-L | TSSOP14 | 0 | 70 | OBS | SP6128AEY-L | ||
| SP6128ACY-L/TR | TSSOP14 | 0 | 70 | OBS | SP6128AEY-L/TR | ||
| SP6128ACY/TR | TSSOP14 | 0 | 70 | OBS | |||
| SP6128AEY | TSSOP14 | -40 | 85 | OBS | |||
| SP6128AEY-L | TSSOP14 | -40 | 85 | OBS | SP6128AEY-L/TR | ||
| SP6128AEY-L/TR | TSSOP14 | -40 | 85 | EOL | XRP6141ELTR-F | ||
| SP6128AEY/TR | TSSOP14 | -40 | 85 | OBS | |||
| SP6128AHY | TSSOP14 | -40 | 105 | OBS | |||
| SP6128AHY-L | TSSOP14 | -40 | 105 | OBS | SP6128AHY-L/TR | ||
| SP6128AHY-L/TR | TSSOP14 | -40 | 105 | OBS | SP6128AEY-L/TR | ||
| SP6128AHY/TR | TSSOP14 | -40 | 105 | OBS | |||
| 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.
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