MAX17250ATD+

EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX17250 2.7V to 18V Input, Boost Converter with 0.1μA True Shutdown, Short-Circuit Protection and Selectable Input Current Limit General Description Benefits and Features The MAX17250 DC-DC boost converter is a high-efficiency, low quiescent current, synchronous boost (step-up) converter with True Shutdown™, program­ mable input current limit, and short-circuit protection. The MAX17250 has a wide input voltage range of 2.7V to 18V and generates an output voltage of 3V to 18V. The MAX17250 has a maximum on-time of 800ns and implements three modes of operation. The first mode of operation is a soft-start mode at power-up. The second mode of operation is normal operation and utilizes a fixed on-time/ minimum off-time Pulse Frequency Modulation (PFM) architecture that uses only 60μA (typ) quiescent current due to the converter switching only when needed. The last mode is True Shutdown, where the output is completely disconnected from the input, and the battery drain is minimized to 0.1μA (typ) shutdown current. The MAX17250 is available in a compact, 12-bump, 1.72mm x 1.49mm WLP or a 14-pin, 3mm x 3mm TDFN package. ●● Input Voltage Range 2.7V to 18V • 1 or 2 Cell Li-ion Batteries ●● Output Voltage Range 3V to 18V, > VIN ●● Integrated Power FETs ●● Selectable Input Peak Current Limit (ISET) • 3.5A, 2.7A, or 1.85A ●● 93% Efficiency ●● Low Power • 0.1μA True Shutdown Current • 60μA Quiescent Current ●● Protection • True Shutdown Prevents Current Flowing Between Input and Output • Soft-Start Inrush Protection • Short-Circuit Protection • Overtemperature Protection • -40°C to +125°C Operation Applications ●● ●● ●● ●● ●● Digital Cameras Battery Powered Internet of Things (IoT) Device 1 or 2 Cell Li-ion Battery Applications Display Supply Buzzer/Alarm Driver Ordering Information appears at end of data sheet. True Shutdown is a trademark of Maxim Integrated Products. Typical Application Circuit L 3.0V to 8.4V IN 2.2µH 0.1µF LX IN CIN 2x10µF GND EN MAX17250 EN VL ISET AGND 19-100359; Rev 2; 10/19 BST OUT PVH PGND 4.7nF FB VL 12V OUT CPVH 2x22µF Rz 1kΩ R1 84.5kΩ 2.2µF R2 10kΩ COUT 10µF MAX17250 2.7V to 18V Input, Boost Converter with 0.1μA True Shutdown, Short-Circuit Protection and Selectable Input Current Limit Absolute Maximum Ratings IN, LX, OUT, PVH to AGND...................................-0.3V to +22V BST to LX.................................................................-0.3V to +6V EN, ISET, FB, VL to AGND......................................-0.3V to +6V PGND to AGND.....................................................-0.3V to +0.3V WLP LX RMS Current.............................-3.2ARMS to +3.2ARMS TDFN LX RMS Current.......................-2.58ARMS to +2.58ARMS Short-Circuit Between OUT and GND........................Continuous WLP Continuous Power Dissipation (TA = +70°C, derate 13.7mW/°C above +70°C.)........1096mW TDFN Continuous Power Dissipation (TA = +70°C, derate 24.4mW/°C above +70°C.).....1951.2mW Operating Temperature Range.......................... -40°C to +125°C Junction Temperature.......................................................+150°C Storage Temperature Range............................. -65°C to +150°C Lead Temperature (soldering, 10 seconds)......................+300°C Soldering Temperature (reflow)........................................+260°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information 14-TDFN Package Code T1433+2C Outline Number 21-0137 Land Pattern Number 90-0063 Thermal Resistance, Single-Layer Board: Junction to Ambient (θJA) 54°C/W Junction to Case (θJC) 8°C/W Thermal Resistance, Four-Layer Board: Junction to Ambient (θJA) 41°C/W Junction to Case (θJC) 8°C/W 12-WLP Package Code N121B1+1 Outline Number 21-100158 Land Pattern Number Refer to Application Note 1891 Thermal Resistance, Four-Layer Board: Junction to Ambient (θJA) 72.82°C/W Junction to Case (θJC) N/A For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. www.maximintegrated.com Maxim Integrated │  2 MAX17250 2.7V to 18V Input, Boost Converter with 0.1μA True Shutdown, Short-Circuit Protection and Selectable Input Current Limit Electrical Characteristics (VIN = 7.2V, VPVH = VOUT = 10V, VEN = 5V, TA = -40°C to +125°C, typical values are at TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS Input Voltage Range VIN Quiescent Supply Current IQ Not switching, 105% TA = 25°C of VOUT_TARGET, TA = -40°C to 125°C Shutdown Current ISD VEN = VOUT = 0V, VPVH = 7.2V  VIN < VOUT_TARGET  FB Accuracy ACC VFB falling, when LX starts switching Inductor Peak Current Limit IPEAK 60 MAX UNITS 18 V 80 95 TA = 25°C VOUT VUVLO TYP 2.7 Output Voltage Range Input Undervoltage Threshold MIN