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LM5026MT
+NomenclatureIC REG CTRLR FWRD CONV 16TSSOP
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FabricantTexas Instruments
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Pièce fabricant #LM5026MT
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Package TSSOP-16
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En stock2710
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Spécifications
| Attribut | Valeur |
| Package / Case | Tube |
| Part Status | Not For New Designs |
| Output Type | Transistor Driver |
| Function | Step-Up/Step-Down |
| Output Configuration | Positive, Isolation Capable |
| Topology | Forward Converter |
| Number of Outputs | 2 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 8V ~ 15V |
| Frequency - Switching | 200kHz ~ 590kHz |
| Duty Cycle(Max) | 70%, 80% |
| Synchronous Rectifier | No |
| Clock Sync | Yes |
| Control Features | Dead Time Control, Frequency Control, Reset, Soft Start |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
Présentation
Description
Key features of the LM5026MT include an integrated 0.5A gate driver capable of driving external MOSFETs, programmable switching frequency, and a synchronization feature to align multiple controllers. It also implements a programmable soft-start to limit inrush current during startup and a cycle-by-cycle current limit for protection against overcurrent conditions.
Additionally, the LM5026MT includes slope compensation to prevent sub-harmonic oscillations, a voltage reference that ensures accuracy, and an undervoltage lockout (UVLO) feature to prevent operation at low input voltages. These features, combined with its efficiency and reliability, make the LM5026MT suitable for telecom, industrial, and consumer power applications.
Equivalent
1. LT3752 from Analog Devices
2. UC3825 from Texas Instruments
3. UC3846 from Texas Instruments
4. NCP1216 from ON Semiconductor
5. UCC28070 from Texas Instruments
These equivalents can vary based on specific application requirements, so cross-referencing datasheets to ensure compatibility is recommended.
Features
1. Wide Input Voltage Range: Supports a broad range of input voltages, making it suitable for various power supply configurations.
2. Integrated Start-Up Regulator: Facilitates easier implementation by providing a stable start-up without the need for additional components.
3. Current-Mode Control: Enhances performance and stability by providing cycle-by-cycle current limiting and feedback.
4. Configurable Operating Frequency: Allows for frequency adjustments up to 1 MHz, providing flexibility in design choices and optimization for efficiency or size.
5. Programmable Dead-Time: Offers the ability to optimize efficiency and minimize switching losses by adjusting the dead-time between high and low-side switches.
6. Fault Protection: Includes features like over-voltage, over-current, and thermal shutdown protection to safeguard the system.
7. Synchronization Capability: Can be synced with an external clock source for multi-phase operations or noise reduction.
These features make the LM5026MT an ideal choice for designers looking to implement efficient and reliable power supply solutions.
Pinout
1. VCC: Supply voltage for the IC.
2. VIN: Vin voltage input.
3. UVLO: Undervoltage lockout pin; monitors the input voltage.
4. COMP: Compensation network pin for error amplifier.
5. FB: Feedback input for regulation.
6. RT: Timing resistor pin to set the oscillator frequency.
7. SYNC: Synchronization input.
8. CS1/CS2: Current sense inputs to monitor the primary side current.
9. OUT_A/OUT_B: Outputs to drive the external power MOSFETs.
10. GND: Ground connection.
11. RES: Restart pin.
12. SS/SD: Soft-start or shutdown control.
13. UTC: Timer control for overcurrent protection.
14. REF: Reference voltage output.
15. RAMP: Ramp signal generator for PWM operation.
These pins work together to provide functionality for voltage regulation, pulse width modulation, and various protection features in power supply applications.