| Package Code | T1644+4A |
| Outline Number | 21-0139 |
| Land Pattern Number | 90-0070 |
| THERMAL RESISTANCE, FOUR-LAYER BOARD | |
| Junction-to-Ambient (θJA) | 35°C/W |
| Junction-to-Case Thermal Resistance (θJC) | 2.7°C/W |
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.
data-opMAX14914BATE%2B
data-opMAX14914BATE%2BT
data-opMAX14914ATE%2BT
data-opMAX14914ATE%2B
data-opMAX14914AATE%2B
data-opMAX14914AATE%2BT
Logic Supply Input. VL defines the levels on all I/O logic interface pins. Bypass VL to GND through a 100nF ceramic capacitor.Analog GroundCurrent Limit Set Input. Connect a resistor from CLIM to GND to set the current limit. See Detailed Description for further information.Open-Drain Fault Output. The FAULT transistor turns on when a fault condition (driver thermal shutdown or loss of ground) occurs. Connect a pullup to VL or V5.Open-Drain DOI Level Output. DOI_LVL is logic-low when DOI voltage is higher than the threshold voltage. DOI_LVL is logic-high (using a pullup resistor) when DOI voltage is lower than the threshold voltage. The threshold voltage depends on DI_EN. Connect a pullup to VL or V5.Digital Input Mode Logic Enable Input. Set DI_EN high to enable digital input operation on the DOI pin, which enables the internal current sink and sets Type 1, Type 2, or Type 3 thresholds on DOI_LVL. Select between Type 1 and 3, and Type 2 DI characteristics through the PP input.Switch Control Input. Drive IN high to close the HS switch; drive IN low to open the HS switch and close the LS switch (when PP = low).Push-Pull DO or DI Type Select Input. In DO mode, set PP high to enable push-pull mode operation of the DO driver. In DI mode, set PP low for IEC Type 1/3 input characteristics and set high for Type 2 input characteristics.Power GroundHigh-Side / Push-Pull Output (DI_EN = low) or Digital Input (DI_EN = high). Connect both DOI pins together externally.Supply Voltage, Nominally 24V. Bypass VDD to GND through a 1uF capacitor.5V Regulator Input. Connect REGIN to VDD when using the internal 5V regulator. Connect REGIN to V5 when powering V5 from an external regulator.Open-Drain Overvoltage Output for the MAX14914 and MAX14914A. The OV_VDD transistor turns off when: 1) a device configured for DI operation; 2) DOI level is higher than VDD. Connect a pullup to VDD.Open-Drain Overcurrent Output for the MAX14914B. OV_CURR turns active low when the load current exceeds the high-side current limit. Connect a pullup resistor between OV_CURR and VL.Analog Supply Voltage/LDO Output. The MAX14914 requires a 5V supply for normal operation, which can come from the internal linear regulator (REGIN connected to VDD) or from an external regulator (REGIN connected to V5). Bypass to GND through a 1μF ceramic capacitor.Exposed Pad. Connect EP to GND.