Datasheet MAX17291 (Maxim)

link to page 20 Click
here
to ask about the production status of specific part numbers.
MAX17291 High-Voltage, 1A Micropower Boost Converter with Short-Circuit Protection and True Shutdown General Description Benefits and Features
The MAX17291 is a low quiescent current boost (step-up) ● 28μA Quiescent Supply Current from Input DC-DC converter with a 1A peak inductor current limit and ● Output Short-Circuit Protection True Shutdown™. True Shutdown disconnects the output ● Overtemperature Protection from the input with no forward or reverse current. The out- ● Constant Frequency in CCM put voltage is set with an external resistor-divider. ● True Shutdown Mode The MAX17291 offers low quiescent current, small total • 0.05μA Shutdown Current solution size, and high efficiency throughout the entire • No Reverse Current from OUT load range. The MAX17291 is a highly integrated boost ● 91% Peak Efficiency converter designed for applications requiring high voltage ● 1.8V to 5.5V Input Range and tiny solution size, such as sensor modules. It in- ● 5.5V to 20V Output Voltage Range tegrates a power switch, power diode, and output load ● 1A Peak Inductor Current Limit switch. It can output up to 20V. The load switch is turned ● Multiple Package Options off under shutdown mode, truly disconnecting the load • 1.27mm x 0.87mm, 6-Bump (3 x 2), 0.4mm Pitch from the input voltage, thus minimizing the leakage current WLP during shutdown mode. The device operates with a • 2mm x 2mm, 8-Pin TDFN switching frequency of 1.0MHz in continuous conduction ● -40°C to +125°C Operating Temperature Range mode (CCM). The MAX17291 switch current limit is 1A. It has 2.2ms built-in soft-start time to minimize inrush cur-
Ordering Information appears at end of data sheet.
rent. The device features short-circuit and thermal protec- tion. The MAX17291 is offered in space-saving, cost-effective 1.27mm x 0.87mm, 6-bump WLP (3 x 2, 0.4mm pitch) and 2mm x 2mm, 8-pin TDFN packages. The operating tem- perature range is from -40°C to +125°C.
Applications
● Sensor Power Supply ● Wearable Devices ● Portable Medical Equipment True Shutdown is a trademark of Maxim Integrated Products. 19-100778; Rev 2; 11/20 Document Outline General Description Applications Benefits and Features Typical Application Circuit Absolute Maximum Ratings Package Information WLP TDFN Electrical Characteristics Electrical Characteristics (continued) Typical Operating Characteristics Typical Operating Characteristics (continued) Pin Configurations WLP TDFN Pin Description Functional Diagram Functional Block Diagram Detailed Description Undervoltage Lockout Enable and Disable Soft-Start Output Short-Circuit Protection Thermal Shutdown Device Functional Modes Light Load Efficiency Mode PWM Mode Applications Information Typical Application Design Requirements Detailed Design Procedure Programming the Output Voltage Inductor Selection Input and Output Capacitor Selection Layout Guidelines Ordering Information Revision History