Overview
The NCV97311MW50R2G is a multi-output power management unit designed by onsemi, specifically tailored for automotive and other high-reliability applications. This device features a 3-output regulator, comprising a low-Iq battery-connected 3 A, 2 MHz non-synchronous switcher and two low-voltage 1.5 A, 2 MHz synchronous switchers. All switchers utilize integrated power transistors, ensuring high efficiency and reliability.
The high-voltage switcher can convert a battery input voltage ranging from 4.1 V to 18 V to a fixed output of 5 V or 3.3 V, with the ability to handle overvoltage conditions up to 37 V and load dump conditions up to 45 V. The downstream switchers are adjustable from 1.2 V to 3.3 V, each with a 1.5 A average current limit.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Voltage Range | VBAT, VINL | -0.3 | 45 | V | ||
| Switching Frequency - Switcher 1 | fSW1 | 4.5 < VBAT < 18 V, ROSC = open | 1.8 | 2.0 | 2.2 | MHz |
| Switching Frequency - Switchers 2 & 3 | fSW2, fSW3 | ROSC = open | 1.8 | 2.0 | 2.2 | MHz |
| Quiescent Current - Shutdown | IqSD | VBAT = VINL = 13.2 V, TJ = 25°C, VEN = 0 V | 8 | 12 | μA | |
| Quiescent Current - Standby | IqEN | VBAT = VINL = 13.2 V, TJ = 25°C, VEN = 3 V, VSTBYB = VEN2 = VEN3 = 0 V | 25 | 35 | μA | |
| Current Limit Threshold - Switcher 1 (Normal Mode) | ILIM1 | VSTBYB = 5 V | 3.9 | 4.9 | A | |
| Thermal Shutdown Activation Temperature | TSD | 150 | 190 | °C |
Key Features
- Fixed frequency operation adjustable from 2.0 to 2.6 MHz
- Internal 1.5 ms soft-starts
- Cycle-by-cycle current limit protections and hiccup overcurrent protections (OCP)
- Individual reset pins with adjustable delays
- QFN package with wettable flanks (pin edge plating)
- AEC-Q100 qualified and PPAP capable
- Pb-free, halogen-free/BFR-free, and RoHS compliant
- Spread spectrum modulation for reduced EMI
- Thermal shutdown and warning features
Applications
- Infotainment systems
- Body electronics
- Telematics
- Electronic Control Units (ECUs)
Q & A
- What is the input voltage range for the NCV97311MW50R2G?
The input voltage range is from 4.1 V to 18 V, with the ability to handle overvoltage conditions up to 37 V and load dump conditions up to 45 V.
- What are the switching frequencies for the switchers?
The switching frequency for switcher 1 is adjustable from 1.8 MHz to 2.2 MHz, and for switchers 2 and 3, it is adjustable from 1.8 MHz to 2.2 MHz.
- What is the quiescent current in shutdown mode?
The quiescent current in shutdown mode is typically 12 μA.
- What are the current limit thresholds for the switchers?
The current limit threshold for switcher 1 is between 3.9 A and 4.9 A in normal mode, and for switcher 2, it is typically around 2.6 A to 2.9 A.
- Does the device have thermal protection features?
- Is the NCV97311MW50R2G compliant with automotive standards?
- What package type does the NCV97311MW50R2G use?
- Are the devices Pb-free and RoHS compliant?
- What are some typical applications for the NCV97311MW50R2G?
- Does the device support spread spectrum modulation?
