MAX77827BEFD+T datasheet, PDF - EEWORLD Datasheet

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MAX77827BEFD+T: DescriptionSwitching Regulator,; CategoryPower/power management The power supply circuit; File Size928KB，23 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

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MAX77827BEFD+T Overview

Switching Regulator,

MAX77827BEFD+T Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Maxim
package instruction	FC2QFN-14
Reach Compliance Code	unknow
Samacsys Descripti	5V Input, 1.8A/3.1A Switch Buck-Boos
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	5.5 V
Minimum input voltage	2.6 V
Nominal input voltage	3.8 V
JESD-30 code	S-XQCC-N14
length	2.5 mm
Number of functions	1
Number of terminals	14
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Maximum output current	2.3 A
Maximum output voltage	5.3 V
Minimum output voltage	2.3 V
Nominal output voltage	3.3 V
Package body material	UNSPECIFIED
encapsulated code	VQCCN
Encapsulate equivalent code	LCC14,.1SQ(UNSPEC)
Package shape	SQUARE
Package form	CHIP CARRIER, VERY THIN PROFILE
Maximum seat height	0.6 mm
Maximum supply current (Isup)	6 mA
surface mount	YES
Switch configuration	BUCK-BOOST
Maximum switching frequency	2800 kHz
Temperature level	AUTOMOTIVE
Terminal form	NO LEAD
Terminal location	QUAD
width	2.5 mm

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MAX77827

5.5V Input, 1.8A/3.1A Switch Buck-Boost

Converter with 6μA I

Benefits and Features

● 1.8V to 5.5V Input Voltage Range

● 2.3V to 5.3V Single Resistor Adjustable Output

Voltage

● 1.6A Maximum Output Current (3.1A I

LIM

Option,

Buck Mode)

● 900mA Maximum Output Current (1.8A I

LIM

Option,

Boost Mode 3.0V

, 3.3V

OUT

)

● 96% Peak Efficiency (3.3V

, 3.3V

OUT

)

● SKIP Mode for Higher Light-Load Efficiency

● 6μA Ultra-Low Typical Quiescent Current (At T

+25°C)

● 2.5MHz Nominal Switching Frequency

● Enable Pin

● GPIO Pins for System Design Convenience

• FPWM (Forced PWM) Mode Selection Pin

• POK Indicator Pin

● UVLO, Soft-Start, Active-Output Discharge,

Overcurrent, and Thermal Shutdown Protections

● 1.61mm x 2.01mm, 12-Bump WLP

Ordering Information

appears at end of data sheet.

General Description

The MAX77827 is a high-efficiency buck-boost regulator

targeted for one-cell Li-ion powered applications with the

lowest typical quiescent current in the industry of 6μA. It

supports input voltages of 1.8V to 5.5V and an output volt-

age range of 2.3V to 5.3V. The IC provides two different

switching current levels (1.8A and 3.1A) to optimize exter-

nal component sizing based on given load current require-

ments. With the 1.8A switching current-limit option, the IC

can support up to 1.0A load current in buck mode and

900mA in boost mode (V

= 3.0V, V

OUT

= 3.3V).

The peak efficiency of 96% makes the IC one of the best

solutions as a DC/DC converter to supply a rail for battery-

powered portable applications.

The IC features an adjustable output voltage, which can

be programmed from 2.3V to 5.3V through a single resis-

tor. Two GPIO pins are available to support force PWM

enable function and power-OK (POK) indicator. A unique

control algorithm allows high-efficiency, outstanding line/

load transient response, and seamless transition between

buck and boost modes. These options provide design flex-

ibility that allow the IC to cover a wide range of applica-

tions and use cases while minimizing board space.

The MAX77827 is available in a 1.61mm x 2.01mm,

12-bump wafer-level package (WLP).

Applications

●

1-Cell Li+ Battery Powered Equipment

Smartphones/Portable/Wearables

Internet of Things (IoT) Devices

NB-IoT Devices

Simplified Block Diagram

1μH

1.8V TO 5.5V

DC SOURCE

10μF

14.52mm

SOLUTION SIZE

LX1

LX2

BIAS

SEL

OUT

OUTS

FPWM

POK

BIAS

1μF

BIAS

AGND

PGND

SEL

SEL*

*CHOOSE R

SEL

VALUE BASED ON V

OUT

SEE TABLE 2

4.00mm

OUT

2.3V TO 5.3V

3.63mm

MAX77827

ENABLE

POWER-OK

0603

FPWM ENABLE

2012

19-100546; Rev 2; 6/19

OUT

0603

OUT

22μF

MAX77827

5.5V Input, 1.8A/3.1A Switch Buck-Boost

Converter with 6μA I

TABLE OF CONTENTS

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Benefits and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

12 WLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

12 FC2QFN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Bump Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

12 WLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

12 FC2QFN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Bump Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Functional Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Function Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Immediate Shutdown Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Power Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Buck-Boost Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Buck-Boost Control Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Output Voltage Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

FPWM Mode Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Power-OK (POK) Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Protection Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Undervoltage Lockout (UVLO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Soft-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Output Active Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Overcurrent Protection (OCP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Thermal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Inductor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Input Capacitor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Output Capacitor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

PCB Layout Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

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MAX77827BEFD+T Related Products

	MAX77827BEFD+T	MAX77827BEWC+T	MAX77827CEFD+T	MAX77827CEWC+T	MAX77827DEFD+T	MAX77827DEWC+T
Description	Switching Regulator,	Switching Regulator,	Switching Regulator,	Switching Regulator,	Switching Regulator,	Switching Regulator,
Is it Rohs certified?	conform to	conform to	conform to	conform to	conform to	conform to
Maker	Maxim	Maxim	Maxim	Maxim	Maxim	Maxim
package instruction	FC2QFN-14	VFBGA, BGA12,3X4,16	FC2QFN-14	VFBGA, BGA12,3X4,16	FC2QFN-14	WLP-12
Reach Compliance Code	unknow	unknow	unknow	unknow	unknow	unknow
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR
control mode	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Minimum input voltage	2.6 V	2.6 V	2.6 V	2.6 V	1.8 V	1.8 V
Nominal input voltage	3.8 V	3.8 V	3.8 V	3.8 V	3.8 V	3.8 V
JESD-30 code	S-XQCC-N14	R-PBGA-B12	S-XQCC-N14	R-PBGA-B12	S-XQCC-N14	R-PBGA-B12
length	2.5 mm	2.008 mm	2.5 mm	2.008 mm	2.5 mm	2.008 mm
Number of functions	1	1	1	1	1	1
Number of terminals	14	12	14	12	14	12
Maximum operating temperature	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Maximum output current	2.3 A	2.3 A	3.7 A	3.7 A	2.3 A	2.3 A
Maximum output voltage	5.3 V	5.3 V	5.3 V	5.3 V	5.3 V	5.3 V
Minimum output voltage	2.3 V	2.3 V	2.3 V	2.3 V	2.3 V	2.3 V
Nominal output voltage	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
Package body material	UNSPECIFIED	PLASTIC/EPOXY	UNSPECIFIED	PLASTIC/EPOXY	UNSPECIFIED	PLASTIC/EPOXY
encapsulated code	VQCCN	VFBGA	VQCCN	VFBGA	VQCCN	VFBGA
Encapsulate equivalent code	LCC14,.1SQ(UNSPEC)	BGA12,3X4,16	LCC14,.1SQ(UNSPEC)	BGA12,3X4,16	LCC14,.1SQ(UNSPEC)	BGA12,3X4,16
Package shape	SQUARE	RECTANGULAR	SQUARE	RECTANGULAR	SQUARE	RECTANGULAR
Package form	CHIP CARRIER, VERY THIN PROFILE	GRID ARRAY, VERY THIN PROFILE, FINE PITCH	CHIP CARRIER, VERY THIN PROFILE	GRID ARRAY, VERY THIN PROFILE, FINE PITCH	CHIP CARRIER, VERY THIN PROFILE	GRID ARRAY, VERY THIN PROFILE, FINE PITCH
Maximum seat height	0.6 mm	0.69 mm	0.6 mm	0.69 mm	0.6 mm	0.69 mm
Maximum supply current (Isup)	6 mA	6 mA	6 mA	6 mA	6 mA	6 mA
surface mount	YES	YES	YES	YES	YES	YES
Switch configuration	BUCK-BOOST	BUCK-BOOST	BUCK-BOOST	BUCK-BOOST	BUCK-BOOST	BUCK-BOOST
Maximum switching frequency	2800 kHz	2800 kHz	2800 kHz	2800 kHz	2800 kHz	2800 kHz
Temperature level	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE
Terminal form	NO LEAD	BALL	NO LEAD	BALL	NO LEAD	BALL
Terminal location	QUAD	BOTTOM	QUAD	BOTTOM	QUAD	BOTTOM
width	2.5 mm	1.608 mm	2.5 mm	1.608 mm	2.5 mm	1.608 mm
Samacsys Descripti	5V Input, 1.8A/3.1A Switch Buck-Boos	-	5V Input, 1.8A/3.1A Switch Buck-Boos	Switching Voltage Regulators Tiny Buck-Boost Converte	5.5V Input, 1.8A/3.1A Switch Buck-Boost Converter with 6μA IQ	TINY BUCK-BOOST CONVERTER

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