MAX5097
40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode
Industry's First Automotive Buck Converter with Low IQ LDO Mode Operates Seamlessly from 4V Cold Crank to 40V Input
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Overview
Features and Benefits
- High-Efficiency Switcher Mode (Buck Mode) or Low-Quiescent-Current Linear Regulator (LDO Mode) Operation
- Wide Operating Input Voltage Range
- +5V to +40V Buck Mode
- +4V to +40V LDO Mode
- Fixed 3.3V or 5V and Adjustable (1.24V to 11V) Output Voltage Versions
- 6µA (typ) Shutdown Current
- Fixed 135kHz or 330kHz Switching Frequency
- External Frequency Synchronization
- Programmable Soft-Start
- Integrated Microprocessor Reset (Active-Low RESET) Circuit with Programmable Timeout Period
- Thermal and Short-Circuit Protection
- -40°C to +125°C Automotive Temperature Range
- Thermally-Enhanced Package Dissipates
- 2.6W at TA = +70°C (16-Pin TQFN)
- 1.7W at TA = +70°C (20-Pin TSSOP)
Product Details
The MAX5096/MAX5097 easy-to-use, Dual Mode™, DC-DC converters operate as LDO (low dropout) or switch-mode buck converters. At a high output load, the converters operate as high-efficiency pulse-width-modulated (PWM) switch-mode converters and reduce the power dissipation. The devices switch to a low-quiescent-current (IQ) LDO mode of operation at light load. During the key-off condition, the system's microcontroller drives the LDO/active-low BUCK input on the fly and forces the MAX5096/MAX5097 into LDO Mode, thereby reducing the quiescent current significantly.
In Buck Mode, the MAX5096/MAX5097 operate from a 5V to 40V input voltage range and deliver up to 600mA of load current with excellent load and line regulation. The fixed-switching frequency versions of 135kHz and 330kHz are available. The MAX5096/MAX5097 DC-DC internal oscillator can be synchronized to an external clock. External compensation and a current-mode control scheme make it easy to design with.
In LDO Mode, the MAX5096/MAX5097 operate from a 4V to 40V input voltage. The LDO Mode operation is intended for a lower output load current of up to 100mA. The quiescent current at 100µA load in LDO Mode is only 41µA (typ).
The MAX5096/MAX5097 feature an enable input that shuts down the device, reducing the current consumption to 6µA (typ). Additional features include a power-on reset output with a capacitor-adjustable timeout period, programmable soft-start, output tracking, output overload, short-circuit and thermal shutdown protections.
The MAX5096/MAX5097 operate over the -40°C to +125°C automotive temperature range and are available in thermally enhanced 20-pin TSSOP or 16-pin TQFN packages.
Applications
- Home Security/Safety
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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MAX5097 Reliability Data1/12/2023
Tools & Simulations
SPICE Models
LIB
MAX5097A SPICE Macro Model
27.49K
Product Recommendations
MAX5097 Companion Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX5097AATE+ | Material Declaration | Reliability Data | 16-LFCSP-5X5X0.75 | |
| MAX5097AATE+T | Material Declaration | Reliability Data | 16-LFCSP-5X5X0.75 | |
| MAX5097AAUP+ | Material Declaration | Reliability Data | 20-TSSOP_4.4_EP-4.4_MM | |
| MAX5097AAUP+T | Material Declaration | Reliability Data | 20-TSSOP_4.4_EP-4.4_MM | |
| MAX5097BATE+ | Material Declaration | Reliability Data | 16-LFCSP-5X5X0.75 | |
| MAX5097BATE+T | Material Declaration | Reliability Data | 16-LFCSP-5X5X0.75 | |
| MAX5097BAUP+ | Material Declaration | Reliability Data | 20-TSSOP_4.4_EP-4.4_MM | |
| Wafer Fabrication Data | MAX5097 Reliability Data |
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