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Overview
| Topology | Other Topology |
| Switching frequency | 212-280 kHz |
| IC revision | 1 |
Description
The R5974D is a step-down monolithic power switching regulator with a minimum switch current limit of 3.1 A, so it is able to deliver up to 2.5 A DCcurrent to the load depending on the application conditions. The output voltage can be set from 1.235 V to 35 V. The high current level is alsoachieved thanks to an HSOP8 package with an exposed frame, that allows to reduce the Rth(JA) down to approximately 40 °C/W. The device usesan internal P-channel DMOS transistor (with a typical RDS(on) of 250 mΩ) as a switching element to minimize the size of the external components. An internal oscillator fixes the switching frequency at 250 kHz. The largeambient temperature range makes it ideal for aerospace and defense applications. A pulse-bypulse current limit with the internal frequencymodulation offers an effective constant current short-circuit protection.
Features
- General features
- 2.5 A DC output current
- Operating input voltage from 4 V to 36 V
- 3.3 V / (± 2%) reference voltage
- Large ambient temperature range:40 °C to 125 °C
- Output voltage adjustable from 1.235 V to 35 V
- Low dropout operation: 100% duty cycle
- 250 kHz internally fixed frequency
- Voltage feed-forward
- Zero load current operation
- Internal current limiting
- Inhibit for zero current consumption
- Synchronization
- Protection against feedback disconnection
- Thermal shutdown
- Aerospace and defense features
- Suitable for use in aerospace and defense applications
- Dedicated traceability and part marking
- Production parts approval documents available
- Adapted extended life time andobsolescence management
- Extended product change notification process
- Designed and manufactured to meet subppm quality goals
- Advanced mold and frame designs for superior resilience in harsh environments (acceleration, EMI, thermal, humidity)
- Extended screening capability on request
Remarks:
- For Inductor value 15uH, general values of O/P vlotage, O/P current is taken
Typical applications
- Dedicated to aerospace applications
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT(A) | RDC max.(mΩ) | fres(MHz) | Size | Version | ISAT,10%(A) | ISAT,30%(A) | IR,40K(A) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PD SMT Power Inductor, 0.75 µH, 19.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance0.75 µH | Performance Rated Current19.5 A | – | DC Resistance5 mΩ | Self Resonant Frequency110 MHz | Size1280 | VersionStandard | Saturation Current @ 10%27 A | Saturation Current @ 30%35 A | Rated Current17 A | ||||
| WE-PD SMT Power Inductor, 4.7 µH, 11 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance4.7 µH | Performance Rated Current11 A | – | DC Resistance12 mΩ | Self Resonant Frequency31.2 MHz | Size1280 | VersionStandard | Saturation Current @ 10%11 A | Saturation Current @ 30%14.3 A | Rated Current9.5 A | ||||
| WE-PD SMT Power Inductor, 6.1 µH, 9.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance6.1 µH | Performance Rated Current9.5 A | – | DC Resistance14 mΩ | Self Resonant Frequency25 MHz | Size1280 | VersionStandard | Saturation Current @ 10%9.5 A | Saturation Current @ 30%12.2 A | Rated Current8.5 A | ||||
| WE-PD SMT Power Inductor, 10 µH, 7.7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance10 µH | Performance Rated Current7.7 A | Saturation Current5.5 A | DC Resistance24 mΩ | Self Resonant Frequency21.5 MHz | Size1260 | VersionStandard | Saturation Current @ 10%5.5 A | Saturation Current @ 30%7.2 A | Rated Current5 A | ||||
| WE-PD SMT Power Inductor, 12 µH, 7.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance12 µH | Performance Rated Current7.4 A | Saturation Current4.9 A | DC Resistance26 mΩ | Self Resonant Frequency19.7 MHz | Size1260 | VersionStandard | Saturation Current @ 10%4.9 A | Saturation Current @ 30%6.4 A | Rated Current4.5 A | ||||
| WE-PD SMT Power Inductor, 15 µH, 7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance15 µH | Performance Rated Current7 A | Saturation Current4.5 A | DC Resistance28 mΩ | Self Resonant Frequency16.6 MHz | Size1260 | VersionStandard | Saturation Current @ 10%4.5 A | Saturation Current @ 30%5.8 A | Rated Current4.2 A | ||||
| WE-PD SMT Power Inductor, 18 µH, 6.7 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance18 µH | Performance Rated Current6.7 A | Saturation Current4.2 A | DC Resistance30 mΩ | Self Resonant Frequency15 MHz | Size1260 | VersionStandard | Saturation Current @ 10%4.2 A | Saturation Current @ 30%5.5 A | Rated Current4 A | ||||
| WE-PD SMT Power Inductor, 22 µH, 6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance22 µH | Performance Rated Current6 A | Saturation Current3.7 A | DC Resistance36 mΩ | Self Resonant Frequency13.5 MHz | Size1260 | VersionStandard | Saturation Current @ 10%3.7 A | Saturation Current @ 30%4.8 A | Rated Current3.5 A | ||||
| WE-PD SMT Power Inductor, 27 µH, 5.3 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance27 µH | Performance Rated Current5.3 A | Saturation Current3.5 A | DC Resistance45 mΩ | Self Resonant Frequency12 MHz | Size1260 | VersionStandard | Saturation Current @ 10%3.5 A | Saturation Current @ 30%4.5 A | Rated Current3.3 A |