Specification	MAX77757JEFG420+T

Battery Chemistry [custom]	Lithium Ion/Polymer
Battery Pack Voltage	4.35 V
Charge Current - Max [Max]	3.15 A
Current - Charging	Constant - Programmable
Fault Protection	Over-Under Voltage, Over Temperature, Over Current, Short Circuit
Interface	USB
Mounting Type	Surface Mount
Number of Cells	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 C
Package / Case	24-PowerUFQFN
Programmable Features	Timer, Current, Voltage
Supplier Device Package	24-FC2QFN (3x3)
Voltage - Supply (Max) [Max]	13.7 V

MAX77757 Series

3.15A USB Type-C Autonomous Charger with JEITA for 1-Cell Li-ion/LiFePO4 Batteries

Part	Charge Current - Max [Max]	Number of Cells	Current - Charging	Voltage - Supply (Max) [Max]	Interface	Package / Case	Battery Pack Voltage	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Programmable Features	Supplier Device Package	Fault Protection	Battery Chemistry [custom]	Battery Chemistry
Analog Devices Inc./Maxim Integrated MAX77757JEFG435+T	3.15 A	1	Constant - Programmable	13.7 V	USB	24-PowerUFQFN	4.35 V	85 °C	-40 C	Surface Mount	Current Timer Voltage	24-FC2QFN (3x3)	Over Current Over Temperature Over-Under Voltage Short Circuit	Lithium Ion/Polymer
Analog Devices Inc./Maxim Integrated MAX77757JEFG420+T	3.15 A	1	Constant - Programmable	13.7 V	USB	24-PowerUFQFN	4.35 V	85 °C	-40 C	Surface Mount	Current Timer Voltage	24-FC2QFN (3x3)	Over Current Over Temperature Over-Under Voltage Short Circuit	Lithium Ion/Polymer
Analog Devices Inc./Maxim Integrated MAX77757JEFG440+T	3.15 A	1	Constant - Programmable	13.7 V	USB	24-PowerUFQFN	4.35 V	85 °C	-40 C	Surface Mount	Current Timer Voltage	24-FC2QFN (3x3)	Over Current Over Temperature Over-Under Voltage Short Circuit	Lithium Ion/Polymer
Analog Devices Inc./Maxim Integrated MAX77757HEFG360+	3.15 A	1	Constant - Programmable	13.7 V	USB	24-PowerUFQFN	3.6 V	85 °C	-40 C	Surface Mount	Current Timer Voltage	24-FC2QFN (3x3)	Over Current Over Temperature Over-Under Voltage Short Circuit		Multi-Chemistry
Analog Devices Inc./Maxim Integrated MAX77757HEFG370+T	3.15 A	1	Constant - Programmable	13.7 V	USB	24-PowerUFQFN	3.7 V	85 °C	-40 C	Surface Mount	Current Timer Voltage	24-FC2QFN (3x3)	Over Current Over Temperature Over-Under Voltage Short Circuit	Lithium Iron Phosphate
Analog Devices Inc./Maxim Integrated MAX77757JEFG435+	3.15 A	1	Constant - Programmable	13.7 V	USB	24-PowerUFQFN	4.35 V	85 °C	-40 C	Surface Mount	Current	24-FC2QFN (3x3)	Over Temperature Over Voltage	Lithium Ion/Polymer
Analog Devices Inc./Maxim Integrated MAX77757JEFG420+	3.15 A	1	Constant - Programmable	13.7 V	USB	24-PowerUFQFN	4.2 V	85 °C	-40 C	Surface Mount	Current Timer Voltage	24-FC2QFN (3x3)	Over Current Over Temperature Over-Under Voltage Short Circuit	Lithium Ion/Polymer
Analog Devices Inc./Maxim Integrated MAX77757JEFG440+	3.15 A	1	Constant - Programmable	13.7 V	USB	24-PowerUFQFN	4.35 V	85 °C	-40 C	Surface Mount	Current Timer Voltage	24-FC2QFN (3x3)	Over Current Over Temperature Over-Under Voltage Short Circuit	Lithium Ion/Polymer
Analog Devices Inc./Maxim Integrated MAX77757HEFG360+T	3.15 A	1	Constant - Programmable	13.7 V	USB	24-PowerUFQFN	3.6 V	85 °C	-40 C	Surface Mount	Current Timer Voltage	24-FC2QFN (3x3)	Over Current Over Temperature Over-Under Voltage Short Circuit	Lithium Iron Phosphate
Analog Devices Inc./Maxim Integrated MAX77757HEFG370+	3.15 A	1	Constant - Programmable	13.7 V	USB	24-PowerUFQFN	4.6 V	85 °C	-40 C	Surface Mount	Current Timer Voltage	24-FC2QFN (3x3)	Over Current Over Temperature Over-Under Voltage Short Circuit		Multi-Chemistry

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 5.14
		10	$ 3.43
		25	$ 2.99
		100	$ 2.49
		250	$ 2.25
		500	$ 2.10
		1000	$ 1.98
	Digi-Reel®	1	$ 5.14
		10	$ 3.43
		25	$ 2.99
		100	$ 2.49
		250	$ 2.25
		500	$ 2.10
		1000	$ 1.98
	N/A	4958	$ 3.94
	Tape & Reel (TR)	2500	$ 1.85
		5000	$ 1.79

Description

General part information

MAX77757 Series

The MAX77757 is a standalone 3.15A charger with integrated USB Type-C®CC detection with JEITA compliance that supports reverse boost capability. The fast-charge current is easily configured with resistors. The MAX77757 operates with an input voltage of 4.5V to 13.7V and has a maximum input current limit of 3A. The IC also implements the adaptive input current limit (AICL) function that regulates the input voltage by reducing input current to prevent the voltage of a weak adapter from collapsing or folding back.The USB Type-C Configuration Channel (CC) detection pins on the MAX77757 enable automatic USB Type-C power source detection and input current limit configuration. To support a variety of legacy USB types as well as proprietary adapters, the IC also integrates BC1.2 detection using the D+ and D- pins. The IC runs the CC pin and BC1.2 detection automatically as soon as a USB plug is inserted without any software control.The IC also offers reverse-boost capability up to 5.1V and 1.5A, which can be enabled with the ENBST pin. The STAT pin indicates charging status while the INOKB pin indicates valid input voltage. Charging can be stopped by pulling the THM pin low.The MAX77757 is equipped with a Smart Power Selector™ and a battery true-disconnect FET to control the charging and discharging of the battery or to isolate the battery in case of a fault. The MAX77757 is offered in several variants to support Li-ion batteries with various termination voltages from 4.1V to 4.5V. It also has a 3.6V termination voltage option for LiFePO4batteries. The IC comes in a 3mm x 3mm, 0.4mm pitch, 24-lead FC2QFN package making it suitable for low-cost PCB assembly.ApplicationsMobile Point-of-Sale (mPOS) TerminalsPortable Medical DevicesWireless HeadphonesGPS TrackersCharging Cradles for Wearable DevicesPower BanksMobile Routers