SMB1360 Device Specification

1 Introduction
1.1 Features
1.2 Application
2 General description
2.1 Switching charger
2.2 Fuel gauge – theory of operation
3 Pin descriptions
4 Operating characteristics
5 Configuration registers
5.1 Battery charger registers
5.2 Fuel gauge registers
5.3 Fuel gauge scratch pad register
5.4 Command sequences
5.4.1 Handshaking
5.4.2 Disable ESR pulse to reduce sleep current
6 I2C programming information
6.1 Serial interface
6.2 Write
6.3 Read
7 Detailed device operation
7.1 Device operation
7.1.1 Power supply
7.1.2 Internal LDO – VDD rail
7.1.3 ENC/SHDN pin: charger enable and shutdown
7.1.4 Startup and battery detection
7.1.5 Fuel gauge generic battery profiles
7.1.6 Battery ID recognition
7.1.7 Prebias
7.1.8 Prequalification mode
7.2 Charger operation
7.2.1 Trickle charge mode
7.2.2 Precharge mode
7.2.3 Constant current mode
7.2.4 Constant voltage mode
7.2.5 Charge completion
7.2.6 Charger inhibit
7.2.7 Automatic battery recharge
7.2.8 Charger efficiency and temperature rise
7.2.9 USB OTG and HDMI/MHL mode
7.2.10 Increasing the OTG current limit
7.2.11 Safety timers
7.2.12 STAT/IRQ output pin
7.2.13 Interrupt output (STAT output configurable option)
7.2.14 Glitch filter
7.2.15 Programmable battery charging
7.2.16 Thermal protection
7.2.17 Thermal input current fold back
7.2.18 AC/USB5
7.2.19 AICL
7.2.20 PFM/PWM operation
7.2.21 Watchdog timer
7.2.22 VCHG output
7.2.23 Hard thermal monitor
7.2.24 Soft thermal monitor (JEITA)
7.3 Reloading of nonvolatile default values
7.4 Battery missing detection
7.4.1 BMD pin
7.4.2 Thermistor pin
7.4.3 BMD algorithm
7.4.4 SYS_OK
7.5 Fuel gauge operation
7.5.1 Fuel gauge battery model
7.5.2 Fuel gauge current sensing
7.5.3 Fuel gauge battery voltage sensing
7.5.4 Fuel gauge performance
7.5.5 Battery ESR estimation
7.5.6 Battery temperature sensing
7.6 LDO output
8 Application information
8.1 External components
8.1.1 Input bypass capacitors
8.1.2 Output filtering: COUT capacitance
8.1.3 Output filtering: LOUT inductor
8.1.4 Battery current sense resistor
8.1.5 Battery temperature sensing
8.2 Board layout recommendations
8.2.1 DCIN input
8.2.2 Switching node
8.2.3 Power ground (PGND)
8.2.4 Analog ground (AGND)
8.2.5 Midpoint capacitors (MID)
8.2.6 Battery current sensing (CS_P, CS_N)
8.2.7 Battery voltage sensing (BATT_P, BATT_N)
8.2.8 Other generic layout recommendations
8.2.9 PCB information
9 Mechanical information
9.1 Device physical dimensions
9.2 Part marking
9.3 Device ordering information
9.3.1 Specification compliant devices
10 Carrier, storage, & handling information
10.1 Shipping
10.1.1 Tape and reel information
10.2 Storage
10.2.1 Bagged storage conditions
10.2.2 Out-of-bag duration
10.3 Handling
10.3.1 Electrostatic discharge
10.4 Barcode label and packing for shipment
11 Part reliability
11.1 Reliability qualifications summary
11.2 Qualification sample description