MIC2127AYML-TR datasheet, PDF - EEWORLD Datasheet

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MIC2127AYML-TR: DescriptionIC REG CTRLR BUCK 16VQFN; CategoryPower/power management The power supply circuit; File Size811KB，42 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com

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MIC2127AYML-TR Overview

IC REG CTRLR BUCK 16VQFN

MIC2127AYML-TR Parametric

Parameter Name	Attribute value
Maker	Microchip
Reach Compliance Code	compliant
Samacsys Description	Switching Controllers 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with Light Load Mode Selection, 16 Lead, 3x3mm VQFN
Other features	SEATED HT-CALCULATED
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
control mode	VOLTAGE-MODE
Maximum input voltage	75 V
Minimum input voltage	4.5 V
Nominal input voltage	12 V
JESD-30 code	S-XQCC-N16
length	3 mm
Number of functions	1
Number of terminals	16
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Maximum output voltage	30 V
Minimum output voltage	0.6 V
Nominal output voltage	5.1 V
Package body material	UNSPECIFIED
encapsulated code	HVQCCN
Encapsulate equivalent code	LCC16,.12SQ,20
Package shape	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Maximum seat height	0.9 mm
Maximum supply current (Isup)	1.8 mA
surface mount	YES
Switch configuration	BUCK
Maximum switching frequency	800 kHz
Temperature level	AUTOMOTIVE
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	QUAD
width	3 mm

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MIC2127A

75V, Synchronous Buck Controller Featuring Adaptive

On-Time Control

Features

• Hyper Speed

Enables:

- High Input to Output Voltage Conversion

Ratio Capability

- Any Capacitor™ Stable

- Ultra-Fast Load Transient Response

• Wide 4.5V-75V Input Voltage Range

• Adjustable Output Voltage from 0.6V to 30V

• 270 kHz-800 kHz Programmable Switching

Frequency

• Built-In 5V Regulator for Single-Supply Operation

• Auxiliary Bootstrap LDO for Improving System

Efficiency

• Internal Bootstrap Diode

• Selectable Light Load Operating Mode

• Enable Input and Power Good Output

• Programmable Current Limit

• Hiccup Mode Short-Circuit Protection

• Soft Start, Internal Compensation and Thermal

Shutdown

• Supports Safe Start-Up into a Prebiased Output

Control

Architecture

General Description

The MIC2127A device is a constant-frequency

synchronous buck controller featuring a unique

adaptive on-time control architecture. The MIC2127A

device operates over an input voltage range from

4.5V-75V. The output voltage is adjustable down to

0.6V with an accuracy of ±1%. The device operates

with programmable switching frequency from

270 kHz-800 kHz.

The MIC2127A device features a MODE pin that allows

the user to select either Continuous Conduction mode

or Hyper Light Load (HLL) mode under light loads. An

auxiliary bootstrap LDO improves the system efficiency

by supplying the MIC2127A internal circuit bias power

and gate drivers from the output of the converter. A

logic level enable (EN) signal can be used to enable or

disable the controller. MIC2127A can start-up

monotonically into a prebiased output. The MIC2127A

device features an open drain power good signal (PG)

that signals when the output is in regulation and can be

used for simple power supply sequencing.

MIC2127A offers a full suite of protection features to

ensure protection of the IC during Fault conditions.

These include undervoltage lockout to ensure proper

operation under power-sag conditions, “hiccup” mode

short-circuit protection, internal soft start of 5 ms to

reduce inrush current during start-up and thermal shut-

down.

The MIC2127A device is available in a 16-pin

3 mm x 3 mm VQFN package, with an operating

junction temperature range from –40°C to +125°C.

Applications

•

Networking/Telecom Equipment

Base Station, Servers

Distributed Power Systems

Industrial Power Supplies



2016-2018 Microchip Technology Inc.

DS20005676C-page 1

MIC2127A

1.0

ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings †

, FREQ

LIM

, SW to P

GND

.................................................................................................................... –0.3V to +76V

to P

GND

(Transient < 50 ns) ............................................................................................................................... –5V

, P

VDD

, FB, PG, MODE to A

GND

........................................................................................................... –0.3V to +6V

EXTVDD to A

GND

...................................................................................................................................... –0.3V to +16V

BST to SW................................................................................................................................................... –0.3V to +6V

BST to A

GND

............................................................................................................................................. –0.3V to +82V

EN to A

GND

...................................................................................................................................... –0.3V to (V

+0.3V)

DH, DL to A

GND

.............................................................................................................................. –0.3V to (V

+0.3V)

GND

to A

GND

........................................................................................................................................... –0.3V to +0.3V

Junction Temperature........................................................................................................................................... +150°C

Storage Temperature (T

) ..................................................................................................................... –65°C to +150°C

Lead Temperature (soldering, 10s) ........................................................................................................................ 260°C

ESD Rating

(1)

......................................................................................................................................................... 1000V

† Notice:

Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is

a stress rating only and functional operation of the device at those or any other conditions above those indicated in the

operational sections of this specification is not intended. Exposure to maximum rating conditions for extended periods

may affect device reliability.

Note 1:

Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5 k in series with

100 pF.

Operating Ratings

(1)

Supply Voltage (V

)...................................................................................................................................... 4.5V to 75V

SW, FREQ, I

LIM

, EN .......................................................................................................................................... 0V to V

EXTVDD........................................................................................................................................................ 0V to 13.2V

Junction Temperature (T

)..................................................................................................................... –40°C to +125°C

Package Thermal Resistance (3 mm × 3 mm VQFN 16LD)

Junction to Ambient (

) .................................................................................................................................. 50.8°C/W

Junction to Case (

)....................................................................................................................................... 25.3°C/W

Note 1:

The device is not ensured to function outside the operating range.

DS20005676C-page 4



2016-2018 Microchip Technology Inc.

MIC2127AYML-TR Related Products

	MIC2127AYML-TR	MIC2127AYML-T5
Description	IC REG CTRLR BUCK 16VQFN	IC REG CTRLR BUCK 16VQFN
Maker	Microchip	Microchip
Reach Compliance Code	compliant	compliant
Other features	SEATED HT-CALCULATED	SEATED HT-CALCULATED
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER	SWITCHING CONTROLLER
Maximum input voltage	75 V	75 V
Minimum input voltage	4.5 V	4.5 V
Nominal input voltage	12 V	12 V
JESD-30 code	S-XQCC-N16	S-XQCC-N16
length	3 mm	3 mm
Number of functions	1	1
Number of terminals	16	16
Maximum operating temperature	125 °C	125 °C
Minimum operating temperature	-40 °C	-40 °C
Maximum output voltage	30 V	30 V
Minimum output voltage	0.6 V	0.6 V
Package body material	UNSPECIFIED	UNSPECIFIED
encapsulated code	HVQCCN	HVQCCN
Encapsulate equivalent code	LCC16,.12SQ,20	LCC16,.12SQ,20
Package shape	SQUARE	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Maximum seat height	0.9 mm	0.9 mm
surface mount	YES	YES
Switch configuration	BUCK	BUCK
Maximum switching frequency	800 kHz	800 kHz
Temperature level	AUTOMOTIVE	AUTOMOTIVE
Terminal form	NO LEAD	NO LEAD
Terminal pitch	0.5 mm	0.5 mm
Terminal location	QUAD	QUAD
width	3 mm	3 mm

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