MIC24046-HYFL-TR

MIC24046-HYFL-TR Datasheet

MIC24046-H

Part	Datasheet
MIC24046-HYFL-TR	MIC24046-HYFL-TR (pdf)

PDF Datasheet Preview
MIC24046-H Pin-Programmable, 4.5V − 19V, 5A Step-Down Converter Micrel’s MIC24046-H is a pin-programmable, highefficiency, wide-input range, 5A, synchronous step-down regulator. The MIC24046-H is perfectly suited for multiplevoltage rail application environments typically found in computing and telecommunication systems. It can be programmed by pin strapping various parameters, such as output voltage, switching frequency, and current-limit values. The pin-selectable switching frequency, valleycurrent-mode control technique, high-performance error amplifier, and external compensation allow for the best tradeoffs between high-efficiency and the smallest possible solution size. The MIC24046-H is pin-out compatible with its I2Cprogrammable counterparts from the same family. The MIC24046-H is available in a thermally-efficient, space-saving, 20-pin 3mm x 3mm QFN package with an operating junction temperature range of to +125°C. Datasheets and support documentation are available on Micrel’s website at: • 4.5V to 19V input voltage range • 5A maximum output current • High efficiency >90% • Pin-selectable output voltages: − 0.7V, 0.8V, 0.9V, 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V • ±1% output voltage accuracy • Supports safe start-up with pre-biased output • Pin-selectable current limit and switching frequency • Internal soft-start and thermal shutdown protection • Hiccup-mode short-circuit protection • Available in a 20-pin 3mm x 3mm QFN package • to +125°C junction temperature range • Servers, data storage, routers, and base stations • FPGAs, DSP, and low-voltage ASIC power MIC24046-H 12VIN 5A DC-to-DC Converter Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 408 944-0800 • fax + 1 408 474-1000 • July 7, 2015 Micrel, Inc. Ordering Information Part Number MIC24046-HYFL Junction Temperature Range to +125°C Pin Configuration Package 20-Pin 3 mm x 3 mm QFN MIC24046-H Lead Finish Pb-Free 20-Pin 3mm x 3mm QFN FL Top View Pin Description Pin Number 1−2 3 − 4, 13 5−6 7 8 9 10 Pin Name VIN PGND LX BST IC VOSET0 VOSET1 Pin Function Input Voltage for the Buck Converter Power Stage These pins are the drain terminal of the internal high-side N-channel MOSFET. A 10µF minimum ceramic capacitor should be connected from VIN to PGND as close as possible to the device. A combination of multiple ceramic capacitors of different sizes is recommended. Low-Side MOSFET Source Terminal and Low-Side Driver Return Connect the ceramic input capacitors to PGND as close as possible to the device. Switch Node Drain low-side MOSFET and source high-side MOSFET connection of the internal power N-channel FETs. The external inductor switched side and bootstrap capacitor bottom terminal must be connected to these pins. Bootstrap Supply voltage for the driver of the high-side N-channel power MOSFET. Connect the bootstrap capacitor top terminal to this pin. Internally Connected for test mode purposes. Connect to AGND or leave floating in normal operation. Three-state Pin Low, High, and High-Z for Output Voltage Programming Together with VOSET1, VOSET0 defines nine logic values corresponding to nine output voltage selections. Three-State Pin Low, High, and High-Z for Output Voltage Programming Together with VOSET0, VOSET1 defines nine logic values corresponding to nine output voltage selections. July 7, 2015 Micrel, Inc. MIC24046-H Pin Description Continued Pin Number 11 12 14 15 16 18 19 20 PGND_EP VIN_EP LX_EP Pin Name ILIM FREQ AGND COMP OUTSNS EN/DLY VDDA VDDP VINLDO PGND VIN LX Pin Function Three-State Low, High, and High-Z Current-Limit Selection Pin. Three-State Low, High, and High-Z Switching Frequency Selection Pin. Analog Ground Quiet ground for the analog circuitry of the internal regulator and return terminal for the external compensation network. Transconductance Error Amplifier Output Connect a compensation network from this pin to AGND.

PDF Datasheet Preview

MIC24046-H

Pin-Programmable, 4.5V − 19V, 5A Step-Down Converter

Micrel’s MIC24046-H is a pin-programmable, highefficiency, wide-input range, 5A, synchronous step-down regulator. The MIC24046-H is perfectly suited for multiplevoltage rail application environments typically found in computing and telecommunication systems. It can be programmed by pin strapping various parameters, such as output voltage, switching frequency, and current-limit values. The pin-selectable switching frequency, valleycurrent-mode control technique, high-performance error amplifier, and external compensation allow for the best tradeoffs between high-efficiency and the smallest possible solution size.

The MIC24046-H is pin-out compatible with its I2Cprogrammable counterparts from the same family.

The MIC24046-H is available in a thermally-efficient, space-saving, 20-pin 3mm x 3mm QFN package with an operating junction temperature range of to +125°C.

Datasheets and support documentation are available on Micrel’s website at:
• 4.5V to 19V input voltage range
• 5A maximum output current
• High efficiency >90%
• Pin-selectable output voltages:
− 0.7V, 0.8V, 0.9V, 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V
• ±1% output voltage accuracy
• Supports safe start-up with pre-biased output
• Pin-selectable current limit and switching frequency
• Internal soft-start and thermal shutdown protection
• Hiccup-mode short-circuit protection
• Available in a 20-pin 3mm x 3mm QFN package
• to +125°C junction temperature range
• Servers, data storage, routers, and base stations
• FPGAs, DSP, and low-voltage ASIC power

MIC24046-H 12VIN 5A DC-to-DC Converter

Micrel Inc.
• 2180 Fortune Drive
• San Jose, CA 95131
• USA
• tel +1 408 944-0800
• fax + 1 408 474-1000
•

July 7, 2015

Micrel, Inc.
Ordering Information

Part Number MIC24046-HYFL

Junction Temperature Range to +125°C

Pin Configuration

Package 20-Pin 3 mm x 3 mm QFN

MIC24046-H

Lead Finish Pb-Free
20-Pin 3mm x 3mm QFN FL Top View

Pin Description

Pin Number 1−2
3 − 4, 13 5−6 7 8 9 10

Pin Name VIN

PGND LX BST IC

VOSET0 VOSET1

Pin Function

Input Voltage for the Buck Converter Power Stage These pins are the drain terminal of the internal high-side N-channel MOSFET. A 10µF minimum ceramic capacitor should be connected from VIN to PGND as close as possible to the device. A combination of multiple ceramic capacitors of different sizes is recommended.

Low-Side MOSFET Source Terminal and Low-Side Driver Return Connect the ceramic input capacitors to PGND as close as possible to the device.

Switch Node Drain low-side MOSFET and source high-side MOSFET connection of the internal power N-channel FETs. The external inductor switched side and bootstrap capacitor bottom terminal must be connected to these pins.

Bootstrap Supply voltage for the driver of the high-side N-channel power MOSFET. Connect the bootstrap capacitor top terminal to this pin.

Internally Connected for test mode purposes. Connect to AGND or leave floating in normal operation.

Three-state Pin Low, High, and High-Z for Output Voltage Programming Together with VOSET1, VOSET0 defines nine logic values corresponding to nine output voltage selections.

Three-State Pin Low, High, and High-Z for Output Voltage Programming Together with VOSET0, VOSET1 defines nine logic values corresponding to nine output voltage selections.

July 7, 2015

Micrel, Inc.

MIC24046-H

Pin Description Continued

Pin Number 11 12 14 15 16
18 19
20 PGND_EP

VIN_EP LX_EP

Pin Name ILIM FREQ AGND

COMP OUTSNS

EN/DLY

VDDA VDDP

VINLDO PGND

VIN LX

Pin Function

Three-State Low, High, and High-Z Current-Limit Selection Pin.

Three-State Low, High, and High-Z Switching Frequency Selection Pin.

Analog Ground Quiet ground for the analog circuitry of the internal regulator and return terminal for the external compensation network.

Transconductance Error Amplifier Output Connect a compensation network from this pin to AGND.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MIC24046-HYFL-TR Datasheet file may be downloaded here without warranties.

Datasheet ID: MIC24046-HYFL-TR 647892