MAX77860 Buck Charger Datasheet

MAX77860 Datasheet, PDF, Equivalent


Part Number

MAX77860

Description

3A Switch-Mode Buck Charger

Manufacture

Maxim Integrated

Total Page 30 Pages
Datasheet
Download MAX77860 Datasheet


MAX77860
EVALUATION KIT AVAILABLE
Click here for production status of specific part numbers.
MAX77860
USB Type-C, 3A Switch-Mode Buck Charger
with Integrated CC Detection, Reverse Boost,
and ADC
General Description
The MAX77860 is a high-performance single input switch
mode charger that features USB Type-C CC detection ca-
pability in addition to reverse boost capability and a Safe-
out LDO.
This switched-mode battery charger with two integrated
switches, provides small inductor and capacitor sizes, pro-
grammable battery charging current, and is ideally suited
for portable devices such as smartphones, IoT devices,
and other Li-ion battery powered electronics. The charger
features a single input, which works for both USB and high
voltage adapters. It supports USB Type-C CC detection
under BC 1.2 specification, and the power-path switch is
integrated in the chip. All MAX77860 blocks connected to
the adapter/USB pin are protected from input overvoltage
events up to 14V. The USB-OTG output provides true-
load disconnect and is protected by an adjustable output
current limit. It has an input current limit up to 4.0A and
can charge a single-cell battery up to 3.15A. When config-
ured in reverse-boost mode, the IC requires no additional
inductors to power USB-OTG accessories. The switching
charger is designed with a special CC, CV, and die tem-
perature regulation algorithm, as well as I2C programma-
ble settings to accommodate a wide range of battery sizes
and system loads. The on-chip ADC can help monitor the
charging input voltage/current, battery voltage, charging/
discharging current, and the battery temperature.
The MAX77860 communicates through an I2C 3.0 com-
patible serial interface consisting of a bidirectional serial
data line (SDA) and a serial clock line (SCL). The IC is
available in a 3.9mm x 4.0mm, 81-bump (9 x 9 array),
0.4mm pitch, wafer-level package (WLP).
Benefits and Features
● Single-Cell Switch Mode Charger
• Up to 14V Protection
• 4.0V to 13.5V Input Operating Range
• Switching Charger with D+/D- Charger Detection
• Up to 4.0A Input Current Limit with Adaptive Input
Current Limit (AICL)
• Up to 3.15A Battery Charging Current Limit
• Optional External Sense Resistor
• CC, CV, and Die Temperature Control
• Supports USB-OTG Reverse Boost, up to 1.5A
Current Limit
• Master-Slave Charging Capability, up to 6A Charge
Current
• Integrated Battery True-Disconnect FET
• Rated up to 9ARMS, Discharge Current Limit
(Programmable)
● USB Type-C Detection
• Integrated VCONN Switch
• CC Pin
• D+/D- Detection for USB HVDCP
• BC 1.2 Support
● One Safeout LDO
● I2C-Compatible Interface
Ordering Information appears at end of data sheet.
Applications
● USB Type-C Charging for 1S Li-ion Applications
● Mobile Point-of-Sale Devices
● Portable Medical Equipment
● Portable Industrial Equipment
19-100290; Rev 2; 6/19

MAX77860
MAX77860
Simplified Block Diagram
UP TO 4.0A
CHGIN 16V
WITHSTANDING
2.2µF
VBUSDET
INOKB
VCONNIN
DP
DN
CC1
CC2
OVPENB
DETBATB
VIO
SCL
SDA
INTB
ONKEY
SWI1
SWI2
USB Type-C, 3A Switch-Mode Buck Charger with
Integrated CC Detection, Reverse Boost, and ADC
MAX77860
ISENSE,
AND OTG
SWITCH,
COMPARATOR
TYPE-C
CC
ADAPTOR
DETECTION
3.15A
SWITCHING
CHARGER
AND
REVERSE
BOOST
BYP
2x10µF
0.47µH
SYS
2x10µF
REF
AND
BIAS
I²C
SERIAL
PORT
AND
REGISTERS
AND
CONTROL
ADC
LI-ION
BATTERY
SAFEOUT
LDO
4.9V TO USB PHY
1µF
www.maximintegrated.com
Maxim Integrated | 2


Features EVALUATION KIT AVAILABLE Click here for production status of specific part num bers. MAX77860 USB Type-C, 3A Switch- Mode Buck Charger with Integrated CC D etection, Reverse Boost, and ADC Gene ral Description The MAX77860 is a high- performance single input switch mode ch arger that features USB Type-C CC detec tion capability in addition to reverse boost capability and a Safeout LDO. Thi s switched-mode battery charger with tw o integrated switches, provides small i nductor and capacitor sizes, programmab le battery charging current, and is ide ally suited for portable devices such a s smartphones, IoT devices, and other L i-ion battery powered electronics. The charger features a single input, which works for both USB and high voltage ada pters. It supports USB Type-C CC detect ion under BC 1.2 specification, and the power-path switch is integrated in the chip. All MAX77860 blocks connected to the adapter/USB pin are protected from input overvoltage events up to 14V. The USB-OTG output provide.
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