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Overview
| Topology | Buck Converter |
| Input voltage | 12 V |
| Switching frequency | 180-220 kHz |
| Output 1 | 3.3 V / 10 A |
Description
The APU3037 controller IC is designed to provide a low cost synchronous Buck regulator for on-board DC to DC converter applications. With the migration of today’s ASIC products requiring low supply voltages such as 1.8V and lower, together with currents in excess of 3A, traditionallinear regulators are simply too lossy to be used when input supply is 5V or even in some cases with 3.3 input supply. The APU3037 together with dual N-channel MOSFETs such as AP60T03, provide a low cost solutionfor such applications. This device features an internal 200KHz oscillator (400KHz for "A" version), under-voltage lockout for both Vcc and Vc supplies, an external programmable soft-start function as well as output under-voltage detection that latches off the device when anoutput short is detected.
Features
- Synchronous Controller in 8-Pin Package
- Operating with single 5V or 12V -supply voltage
- Internal 200KHz Oscillator(400KHz for APU3037A)
- Soft-Start Function
- Fixed Frequency Voltage Mode
- 500mA Peak Output Drive Capability
- Protects the output when controlFET is shorted
- RoHS Compliant
Typical applications
- Low cost on-board DC to DC such as 5V to 3.3V,
- Graphic Card
- DDR memory source sink Vtt application
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | IR(A) | ISAT(A) | RDC max.(Ω) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PD4 SMT Power Inductor, 1 µH, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD4 SMT Power Inductor | Inductance1 µH | – | – | – | – | Self Resonant Frequency95 MHz | – | Rated Current8.6 A | Saturation Current14.25 A | DC Resistance0.007 Ω | MountSMT | |||
 | WE-HCI SMT Flat Wire High Current Inductor, 3.2 µH, 19.1 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance3.2 µH | Performance Rated Current19.1 A | Saturation Current @ 10%6 A | Saturation Current @ 30%15 A | DC Resistance5.3 mΩ | Self Resonant Frequency34 MHz | MaterialWE-PERM | – | – | DC Resistance0.00583 Ω | MountSMT |