BD9123MUV datasheet, PDF - EEWORLD Datasheet

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BD9123MUV: Description1.2 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, QCC16; CategoryPower/power management The power supply circuit; File Size131KB，5 Pages; ManufacturerROHM Semiconductor; Websitehttps://www.rohm.com/; Environmental Compliance

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BD9123MUV Overview

1.2 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, QCC16

BD9123MUV Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	ROHM Semiconductor
Parts packaging code	QFN
package instruction	HVQCCN,
Contacts	16
Reach Compliance Code	compli
ECCN code	EAR99
Is Samacsys	N
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR
Maximum input voltage	5.5 V
Minimum input voltage	2.7 V
Nominal input voltage	3.3 V
JESD-30 code	S-XQCC-N16
JESD-609 code	e2
length	3 mm
Number of functions	1
Number of terminals	16
Maximum operating temperature	95 °C
Minimum operating temperature	-40 °C
Maximum output current	1.2 A
Nominal output voltage	1 V
Package body material	UNSPECIFIED
encapsulated code	HVQCCN
Package shape	SQUARE
Package form	CHIP CARRIER
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	1 mm
surface mount	YES
Maximum switching frequency	1200 kHz
Temperature level	INDUSTRIAL
Terminal surface	Tin/Copper (Sn/Cu)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3 mm
Base Number Matches	1

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STRUCTURE

PRODUCT NAME

TYPE

FEATURES

Silicon Monolithic Integrated Circuit

1ch DC／DC Converter IC built in synchronous rectifier

BD9123MUV

・Output

Voltage：3 bit Adjustable Setting (0.85~1.2V)

・Output

Current：1.2A

・High

Efficiency and Fast Transient Response

○ABSOLUTE

MAXIMUM RATING (Ta=25℃)

Parameter

Power Supply Voltage

EN, SW, ITH Voltage

Logic Input Voltage

Power Dissipation 1

Power Dissipation 2

Power Dissipation 3

Power Dissipation 4

Operating Temperature Range

Storage Temperature Range

Maximum Junction Temperature

Symbol

EN, SW, ITH

VID<2:0>

Pd1

Pd2

Pd3

Pd4

Topr

Tstg

Tjmax

Limit

-0.3½+7 *

-0.3½+7

0.27 *

0.62 *

1.77 *

2.66 *

Unit

℃

-40½+95

-55½+150

+150

* Pd, ASO, and Tjmax=150℃ should not be exceeded.

* IC only.

* 1 layer, mounted on a board 74.2mm×74.2mm×1.6mm Glass-epoxy PCB (Copper foil area : 6.28mm )

* 4 layers, mounted on a board 74.2mm×74.2mm×1.6mm Glass-epoxy PCB (Copper foil area in 1,4layer : 6.28mm ,

Copper foil area in 2,3layer : 5505 mm )

* 4 layers, mounted on a board 74.2mm×74.2mm×1.6mm Glass-epoxy PCB (Copper foil area : 5505mm ) ,

copper foil in each layers.

○OPERATING

CONDITIONS (Ta=-40½+95℃)

Parameter

Vcc Voltage

PVcc Voltage

EN Voltage

Logic Input Voltage

Output Voltage range

SW Average Output Current

* Pd and ASO should not be exceeded.

This product is not designed for protection against radioactive rays.

Status of this document

The Japanese version of this document is the formal specification. A customer may use this translation version only for a reference to

help reading the formal version. If there are any differences in translation version of this document, formal version takes priority.

Symbol

VID<2:0>

OUT

Min.

2.7

0.85

Typ.

3.3

Max.

5.5

1.2

1.2*

Unit

REV. B

4/4

○NOTES

FOR USE

(1) Absolute Maximum Ratings

We are careful enough for quality control about this IC. So, there is no problem under normal operation,

excluding that it exceeds the absolute maximum ratings. However, this IC might be destroyed when the

absolute maximum ratings, such as impressed voltages or the operating temperature range, is exceeded, and

whether the destruction is short circuit mode or open circuit mode cannot be specified. Pleases take into

consideration the physical countermeasures for safety, such as fusing, if a particular mode that exceeds the

absolute maximum rating is assumed.

(2) GND Potential

Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state.

Furthermore, check to be sure no terminals are at a potential lower than the GND voltage except for SW, PGND, GND

terminals including an actual electric transient.

(3)

Thermal design

Do not exceed the power dissipation (Pd) of the package specification rating under actual operation, and please

design enough temperature margins.

(4)

Short circuit mode between terminals and wrong mounting

In order to mount the IC on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous

mounting can destroy the IC. Furthermore, if a short circuit occurs due to foreign matters entering between

terminals or between the terminal and the power supply or the GND terminal, the IC can destroy

(5) Operation in Strong electromagnetic field

Be noted that using the IC in the strong electromagnetic radiation can cause operation failures.

(6) ASO (Area of Safety Operation.)

Do not exceed the maximum ASO and the absolute maximum ratings of the output driver.

(7)

TSD (Thermal Shut-Down) circuit

The thermal shutdown circuit (TSD circuit) is built in this product. When IC chip temperature becomes higher,

the thermal shutdown circuit operates and turns output off. The guarantee and protection of IC are not purpose.

Therefore, please do not use this IC after TSD circuit operates, nor use it for assumption that operates the TSD

circuit.

(8) GND wiring pattern

Use separate ground lines for control signals and high current power driver outputs. Because these high current

outputs that flows to the wire impedance changes the GND voltage for control signal. Therefore, each ground

terminal of IC must be connected at the one point on the set circuit board. As for GND of external parts, it is

similar to the above-mentioned.

(9) Operation in supply voltage range

Functional Circuit operation is guaranteed within operation ambient temperature, as long as it is within operation

supply voltage range. The electrical characteristics standard value cannot be guaranteed.

However, there is no drastic variation in these values, as long as it is within operation supply voltage range.

(10) We are confident in recommending the above application circuit example, but we ask that you carefully check the

characteristics of this circuit before using it. If using this circuit after modifying other external circuit constants, be

careful to ensure adequate margins for variation between external devices and this IC, including not only static

characteristics but also transient characteristics. If switching noise is high, please insert the schottky barrier

diodes between SW pin and PGND pin.

(11) Overcurrent protection circuit

The overcurrent protection circuit is built in the output. If the protection circuit operates more than for specific

hours (when the load is short.), the output will be latched in OFF. The output returns when EN is turned on or

UVLO is released again. These protection circuits are effective in the destruction prevention by broken accident.

Please do not use in continuous circuit operation.

(12) Selection of inductor

It is recommended to use an inductor with a series resistance element (DCR) 0.15Ω or less. Note that use of a

high DCR inductor will cause an inductor loss, resulting in decreased output voltage. Should this condition

continue for a specified period (soft start time + timer latch time), output short circuit protection will be activated

and output will be latched OFF. When using an inductor over 0.15Ω, be careful to ensure adequate margins for

variation between external devices and this IC, including transient as well as static characteristics.

REV. B

Notice

Notes

No copying or reproduction of this document, in part or in whole, is permitted without the

consent of ROHM Co.,Ltd.

The content specified herein is subject to change for improvement without notice.

The content specified herein is for the purpose of introducing ROHM's products (hereinafter

"Products"). If you wish to use any such Product, please be sure to refer to the specifications,

which can be obtained from ROHM upon request.

Examples of application circuits, circuit constants and any other information contained herein

illustrate the standard usage and operations of the Products. The peripheral conditions must

be taken into account when designing circuits for mass production.

Great care was taken in ensuring the accuracy of the information specified in this document.

However, should you incur any damage arising from any inaccuracy or misprint of such

information, ROHM shall bear no responsibility for such damage.

The technical information specified herein is intended only to show the typical functions of and

examples of application circuits for the Products. ROHM does not grant you, explicitly or

implicitly, any license to use or exercise intellectual property or other rights held by ROHM and

other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the

use of such technical information.

The Products specified in this document are intended to be used with general-use electronic

equipment or devices (such as audio visual equipment, office-automation equipment, commu-

nication devices, electronic appliances and amusement devices).

The Products specified in this document are not designed to be radiation tolerant.

While ROHM always makes efforts to enhance the quality and reliability of its Products, a

Product may fail or malfunction for a variety of reasons.

Please be sure to implement in your equipment using the Products safety measures to guard

against the possibility of physical injury, fire or any other damage caused in the event of the

failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM

shall bear no responsibility whatsoever for your use of any Product outside of the prescribed

scope or not in accordance with the instruction manual.

The Products are not designed or manufactured to be used with any equipment, device or

system which requires an extremely high level of reliability the failure or malfunction of which

may result in a direct threat to human life or create a risk of human injury (such as a medical

instrument, transportation equipment, aerospace machinery, nuclear-reactor controller,

fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of

any of the Products for the above special purposes. If a Product is intended to be used for any

such special purpose, please contact a ROHM sales representative before purchasing.

If you intend to export or ship overseas any Product or technology specified herein that may

be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to

obtain a license or permit under the Law.

Thank you for your accessing to ROHM product informations.

More detail product informations and catalogs are available, please contact us.

ROHM Customer Support System

http://www.rohm.com/contact/

www.rohm.com

R0039A

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