Package Information
| CAD Model: | View CAD Model |
| Pkg. Type: | SOICW |
| Pkg. Code: | MVC |
| Lead Count (#): | 24 |
| Pkg. Dimensions (mm): | 15.39 x 7.49 x 0.00 |
| Pitch (mm): | 1.27 |
Environmental & Export Classifications
| Moisture Sensitivity Level (MSL) | 1 |
| ECCN (US) | EAR99 |
| HTS (US) | 8542.39.0090 |
| RoHS (ISL73847SLHMBZ) | Download |
| Pb (Lead) Free | Yes |
Product Attributes
| Pkg. Type | SOICW |
| Description | 75krad(Si) |
| Carrier Type | Tray |
| MOQ | 25 |
| Moisture Sensitivity Level (MSL) | 1 |
| CAGE code | 34371 |
| Control Mode | Peak Current Mode |
| Control Type | Current Mode |
| DSEE (MeV·cm2/mg) | 86 |
| Die Sale Availability? | Yes |
| Flow | RH Plastic |
| Lead Count (#) | 24 |
| Length (mm) | 15.4 |
| No-Load Operating Current | 12 |
| Output Current (Max) [Rail 1] (A) | 140 |
| Output Voltage (Max) (V) | 19 |
| Output Voltage (Min) (V) | 0.6 |
| PROTO Availability? | Yes |
| Pb (Lead) Free | Yes |
| Pb Free Category | Nickel/Palladium/Gold-Silver - e4 |
| Peak Efficiency (%) | 91 |
| Phases (Max) | 2 |
| Pitch (mm) | 1.3 |
| Pkg. Dimensions (mm) | 15.4 x 7.5 x 0.00 |
| Qualification Level | Class Pe |
| Quiescent Current | 11µA |
| Rating | Space |
| SYNCH Capability | Yes |
| Simulation Model Available | iSim |
| Supply Voltage (max) (V) | 19 - 19 |
| Supply Voltage (min) (V) | 4.5 - 4.5 |
| Switching Frequency (KHz) | 250 - 1500 |
| Switching Frequency (max) (kHz) | 1500 |
| Switching Frequency (min) (kHz) | 250 |
| TID LDR (krad(Si)) | 75 |
| Temp. Range (°C) | -55 to +125°C |
| Topology | Sync. Buck |
| Topology [Rail 1] | Buck |
| VREF (V) | 0.6 |
| Width (mm) | 7.5 |
Resources for ISL73847SLH
Description
The ISL73847SLH is a synchronous buck controller that can operate as a single or dual-phase controller. It works with the ISL71441SLH (half-bridge GaN FET driver) to generate point-of-load voltage rails for commercial space applications.
It accepts an input voltage range of 4.5V to 19V with a programmable PWM output switching frequency between 250kHz and 1.5MHz with a single resistor. The output can regulate a voltage upwards of 600mV and is limited on the top end by the minimum off time and selected switching frequency.
The ISL73847SLH features built-in current sharing, enabling two-phase operation within a single device and four-phase operation using two ISL73847SLH devices, all without requiring an external clock at ≤ 1.04MHz. For multi-phase operation at other frequencies, the ISL74420 provides additional scalability, making it a flexible solution for multi-phase power architectures.
Its wide input voltage range makes it ideal for high-current FPGA core power and general-purpose power applications. The current mode modulation architecture simplifies loop compensation, enhances power supply rejection, and supports remote sensing to compensate for voltage drops under load. These features deliver a high-density, robust power solution that minimizes external components while ensuring efficient and reliable performance.
The ISL73847SLH also features a tri-level output that provides excellent protection against faults by driving a mid-scale voltage to signal the power stage to enter a Hi-Z condition.
The ISL73847SLH operates across the military temperature range from -55°C to +125°C and is available in a 24 Ld WSOIC plastic package.