EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX17612A/MAX17612B/ 4.5V to 60V, 250mA Current-Limiter with MAX17612C OV, UV, and Reverse Protection General Description Benefits and Features The Olympus series of ICs is the industrys smallest Robust Protection Reduces System Downtime and robust integrated system protection solutions. The Wide Input-Supply Range: +4.5V to +60V MAX17612A/MAX17612B/MAX17612C adjustable over- Hot Plug-in Tolerant Without TVS up to 35V Input Supply voltage and overcurrent protection devices are ideal to protect systems against positive and negative input volt- Negative Input Tolerance to -65V Low R 1.42 (typ) age faults up to +60V and -65V, and feature low 1.42 ON (typ) R FETs. Reverse Current-Blocking Protection ON Thermal Overload Protection The adjustable input overvoltage protection range is 5.5V Extended -40C to +125C Temperature Range to 60V and the adjustable input undervoltage protec- MAX17612A Enables OV, UV, and Reverse-Volt- tion range is 4.5V to 59V. The input overvoltage-lockout age Protection (OVLO) and undervoltage-lockout (UVLO) thresholds are set using external resistors. Additionally, the devices offer MAX17612B Enables OV and UV Protection an internal input undervoltage threshold at 4.2V (typ). MAX17612C Enables Reverse-Voltage Protection The devices feature programmable current-limit protec- Flexible Design Options Enable Reuse and Less tion up to 250mA hence, controlling the inrush current at Requalification startup while charging high capacitances at the output. Adjustable OVLO and UVLO Thresholds Current-limit threshold is programmed by connecting Programmable Forward-Current Limit: 10mA to a resistor from the SETI pin to GND. When the device 20mA with 6% Accuracy and 20mA to 250mA with current reaches the programmed threshold, the device 5% Accuracy Over Full Temperature Range prevents further increases in current by modulating the Programmable Overcurrent Fault Response: FET resistance. The devices can be programmed to Autoretry, Continuous, and Latch-Off Modes behave in three different ways under current-limit con- Smooth Current Transitions dition: Autoretry, Continous, or Latch-off modes. The Saves Board Space and Reduces External BOM voltage appearing on the SETI pin is proportional to the Count instantaneous current flowing through the device and is 10-Pin, 3mm x 3mm, TDFN-EP Package read by an ADC. Integrated FETs MAX17612A and MAX17612C block current flowing in the reverse direction (i.e., from OUT to IN) whereas MAX17612B allows current flow in the reverse direction. The devices feature thermal shutdown protection against excessive power dissipation. The devices are available in a small, 10-pin (3mm x 3mm) TDFN-EP package. The devices operate over the -40C to +125C extended temperature range. Ordering Information appears at end of data sheet. Applications Sensor Systems Condition Monitoring Factory Sensors Process Instrumentation Weighing and Batching Systems Industrial Applications such as PLC, Network-Control Modules, Battery-Operated Modules 19-100363 Rev 0 6/18MAX17612A/MAX17612B/ 4.5V to 60V, 250mA Current-Limiter with MAX17612C OV, UV, and Reverse Protection Typical Operating Circuits MAX17612A and MAX17612B IN OUT 0.47F 4.7F VPULLUP MAX17612A SYSTEM R3 MAX17612B SYSTEM FLAG FAULT OPTIONAL POWER FOR SUPPLY HIGH OVLO UVOV UV/OV FAULT R1 INPUT SURGE UVLO EN EN APPLICATIONS R2 R4 CLMODE SETI ADC GND RSETI MAX17612C IN OUT 0.47F 4.7F V PULLUP SYSTEM MAX17612C FORWARD SYSTEM FWD OPTIONAL FAULT POWER FOR REVERSE SUPPLY REV HIGH FAULT INPUT SURGE EN EN APPLICATIONS CLMODE SETI ADC GND R SETI Maxim Integrated 2 www.maximintegrated.com