Overview
The LM5101CSD/NOPB is a high-voltage gate driver produced by Texas Instruments. It is designed to drive both the high-side and low-side N-Channel MOSFETs in synchronous buck or half-bridge configurations. This device is part of the LM5101 series, which includes various versions with different current ratings. The LM5101C specifically provides a 1-A gate drive current. It features a floating high-side driver capable of operating with supply voltages up to 100 V and includes an integrated high-voltage diode for charging the high-side gate drive bootstrap capacitor. The device operates with TTL input thresholds and has a robust level shifter that ensures high-speed operation with low power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM5101CSD/NOPB |
| Package Type | WSON-10 |
| Pins | 10 |
| Operating Temperature Range | -40°C to 125°C |
| Bus Voltage | 100 V |
| Channel Input Logic | TTL |
| Peak Output Current | 1 A |
| Rise Time | 8 ns |
| Fall Time | 8 ns |
| Propagation Delay | 25 ns |
| Input VCC (Min/Max) | 9 V / 14 V |
| Quiescent Current (Iq) | 10 μA |
| Negative Voltage Handling at HS Pin | -1 V |
| RoHS Compliance | Yes |
Key Features
- Drives both high-side and low-side N-Channel MOSFETs in synchronous buck or half-bridge configurations.
- Independent high- and low-driver logic inputs with TTL thresholds.
- Bootstrap supply voltage up to 118 V DC.
- Fast propagation times (25-ns typical) and excellent propagation delay matching (3-ns typical).
- Drives 1000-pF load with 8-ns rise and fall times.
- Supply rail undervoltage lockout on both low-side and high-side power rails.
- Low power consumption and integrated high-voltage diode for charging the high-side gate drive bootstrap capacitor.
- Pin compatible with HIP2100/HIP2101.
Applications
The LM5101CSD/NOPB is suitable for various high-voltage applications, including:
- Synchronous buck converters
- Half-bridge configurations
- Power supplies requiring high-side and low-side MOSFET control
- Motor control systems
- High-voltage DC-DC converters
Q & A
- What is the maximum bus voltage the LM5101CSD/NOPB can handle?
The LM5101CSD/NOPB can handle a maximum bus voltage of 100 V.
- What is the peak output current of the LM5101CSD/NOPB?
The peak output current is 1 A.
- What type of input logic does the LM5101CSD/NOPB use?
The LM5101CSD/NOPB uses TTL input logic).
- What is the operating temperature range of the LM5101CSD/NOPB?
The operating temperature range is -40°C to 125°C).
- Does the LM5101CSD/NOPB have undervoltage lockout protection?
Yes, it has supply rail undervoltage lockout on both low-side and high-side power rails).
- What is the quiescent current (Iq) of the LM5101CSD/NOPB?
The quiescent current (Iq) is 10 μA).
- Is the LM5101CSD/NOPB RoHS compliant?
Yes, the LM5101CSD/NOPB is RoHS compliant).
- What package types are available for the LM5101C?
The LM5101C is available in SOIC-8, SO PowerPAD-8, WSON-10, and MSOP-PowerPAD-8 packages).
- What is the rise and fall time of the LM5101CSD/NOPB?
The rise and fall times are both 8 ns).
- What is the propagation delay of the LM5101CSD/NOPB?
The propagation delay is 25 ns typical).
