Create a design and simulate using EE-Sim tools: MAX16990
The MAX16990/MAX16992ATCF/V+ are high-performance, current-mode PWM controllers with 4μA (typ) shutdown current for wide input voltage range boost/SEPIC converters. The 4.5V to 36V input operating voltage range makes these devices ideal in automotive applications such as for front-end “preboost” or “SEPIC” power supplies and for the first boost stage in high-power LED lighting applications. An internal low-dropout regulator (PVL regulator) with a 5V output voltage enables the MAX16990/MAX16992ATCF/V+ to operate directly from an automotive battery input. The input operating range can be extended to as low as 2.5V when the converter output is applied to the SUP input.
There are multiple versions of the devices offering one or more of the following functions: a synchronization output (SYNCO) for two-phase operation, an overvoltage protection function using a separate input pin (OVP), and a reference input pin (REFIN) to allow on-the-fly output voltage adjustment.
The MAX16990 and MAX16992ATCF/V+ operate in different frequency ranges. All versions can be synchronized to an external master clock using the FSET/SYNC input.
In addition, the MAX16990/MAX16992ATCF/V+ have a factory-programmable spread-spectrum option. Both devices are available in compact 12-pin TQFN and 10-pin μMAX packages.
Feature
- Minimized Radio Interference with 2.5MHz Switching Frequency Above the AM Radio Band
- Space-Efficient Solution Design with Minimized External Components
- 100kHz to 1MHz (MAX16990) and 1MHz to 2.5MHz (MAX16992) Switching-Frequency Ranges
- 12-Pin TQFN (3mm x 3mm) and 10-Pin μMAX Packages
- Spread Spectrum Simplifies EMI Management Design
- Flexibility with Available Configurations for Boost, SEPIC, and Multiphase Applications
- Adjustable Slope Compensation
- Current-Mode Control
- Internal Soft-Start (9ms)
- Protection Features Support Robust Automotive Applications
- Operating Voltage Range Down to 4.5V (2.5V or Lower in Bootstrapped Mode), Immune to Load- Dump Transient Voltages Up to 42V
- PGOOD Output and Hiccup Mode for Enhanced System Protection
- Overtemperature Shutdown
- -40°C to +125°C Operation
Applications
- Automotive Audio/Navigation Systems
- Automotive LED Lighting
- Dashboards
