EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX77932C 8A Dual-Phase Switched-Capacitor Converter General Description Benefits and Features The MAX77932C is a standalone, dual-phase switched- 8A Switched Capacitor Converter capacitor converter with integrated power switches that 2S to 1S Battery Voltage Conversion (V = V /2) OUT IN delivers 8A output current and divides the input voltage Integrated Power Switches by two. The IC is suitable for applications that utilize 2S Low I : 30A Operating, 4A Shutdown Q Li+ batteries while powering circuitry that operates at 1S- Soft-Start with Programmable Current and Timeout equivalent voltage. It is also suitable for applications mi- Programmable Input Overvoltage Lockout grating from 1S to 2S battery configurations. The IC sim- Programmable Output Overvoltage Lockout plifies this migration by converting the 2S battery voltage Programmable Overcurrent Protection to 1S-equivalent output and allows designers to preserve Programmable Switching Frequency 0.25MHz to the existing downstream 1S power architecture. 1.5MHz Thermal Alarm and Protection The inductorless switched-capacitor converter topology of Chip Enable Input the IC shrinks the overall footprint and reduces the maxi- Power Good Indicator Output mum height of the circuit. Its high switching frequency, up Frequency Dithering to 1.5MHz, reduces the size and number of capacitors re- 2 I C Interface with Interrupt quired, further minimizing the solution footprint. The IC en- sures safe operation with integrated overvoltage, under- Ordering Information appears at end of data sheet. voltage, overcurrent, and thermal protection, and also min- imizes EMI with built-in frequency dithering. In addition to Simplified Block Diagram the small solution size, lower EMI, and protection features, the ICs class-leading peak efficiency of 98.5% simplifies thermal design and makes it ideal for consumer, medical, MAX77932 BST1P and industrial applications. IN V IN C CBST IN 2 CF1P The IC features an I C compatible, 2-wire serial interface HVDD C FLY consisting of a bidirectional serial data line (SDA) and a LDO CF1N C HVDD serial clock line (SCL). The IC supports SCL clock rates C BST BST1N VOUT AVDD up to 3.4MHz. The converter parameters such as OCP, LDO CAVDD BST2P OVLO or UVLO thresholds, switching frequency, soft-start CBST VIO CF2P current, and duration are easily adjustable through the VIO SWITCHED C CAPACITOR VIO C 2 FLY CONVERTER CF2N I C interface. The IC consumes a low quiescent current C of 30A when operating and 4A in shutdown. The IC is BST BST2N IRQB available in a tiny, lead-free 0.4mm pitch, 2.4mm x 2.8mm SDA DIGITAL OUT VOUT CONTROL/ C SCL 2 42-pin wafer-level package (WLP). C I C OUT PGOOD PGND CLOAD EN VIN Applications AGND Smartphones and Tablets Ultrabook Computers Chromebooks DSLR and Mirrorless Cameras Power Banks 2S Li+ Battery Applications Smartphone Direct Charging Portable Printers Portable Gaming Devices Mobile Point-of-Sale (mPOS) Devices Two-Way Radios 19-100851 Rev 0 7/20MAX77932C 8A Dual-Phase Switched-Capacitor Converter TABLE OF CONTENTS General Description 1 Applications 1 Benefits and Features 1 Simplified Block Diagram . 1 Absolute Maximum Ratings 6 Package Information . 6 WLP . 6 Electrical Characteristics . 8 Typical Operating Characteristics . 11 Pin Configuration . 13 Pin Description 13 Functional Diagrams 15 Block Diagram 15 Detailed Description 16 Switched-Capacitor Converter (SCC) 16 Enable or Disable the Device by EN . 16 Enable or Disable the Device by EN and V 17 IO 2 Enable by I C . 17 Startup and Soft-Start . 18 PGOOD . 18 Automatic Mode (Automatic-Skip Mode) and Fixed-Frequency Mode 19 Undervoltage Lockout 19 Frequency Dithering 19 Overcurrent Protections . 20 High Current Alarm . 20 Thermal Alarms and Fault . 20 Input Overvoltage Protection (IOVP) . 20 State Diagram 20 2 I C Interface Description 22 Register Map 25 Device Registers 25 Register Details . 25 Applications Information . 34 Capacitor Selection 34 Layout Guide . 35 Typical Application Circuits . 36 System Block Diagram A 36 System Block Diagram B 36 www.maximintegrated.com Maxim Integrated 2