Package Information

28 TSSOP

Package Code	U28E+6C
Outline Number	21-0108
Land Pattern Number	90-100175
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θ_JA)	24.6°C/W
Junction to Case (θ_JC)	1.5°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-opMAX25608AUI%2FV%2B

data-opMAX25608AUI%2FV%2BT

Device ID Resistor. Connect a resistor value from RADDR to GND to set the UART Device ID.LED Binning Resistor Connection. Connect a LED binning resistor from this pin to GND.UART Receive Input. If the driver to this pin is CMOS output, no pull-up resistor is needed. If the driver to this pin is open drain, add a 1.5kΩ pull-up resistor.UART Transmit Output. Add a 1.5kΩ pull-up resistor.CLK Input. Can be optionally used to sync the device with an external digital clock signal.NTC Divider ADC Input. Connect to NTC resistor divider to enable remote temperature sensing.LDO Output. Nominal voltage is 1.8V. Connect a bypass capacitor between VDD and GND.Drain of Internal Switch 12. Add a 0.1μF capacitor from DR12 to GND.Drain of Internal Switch 11.Drain of Internal Switch 10.Drain of Internal Switch 9.Drain of Internal Switch 8.Drain of Internal Switch 7.Source of Internal Switch 7.Drain of Internal Switch 6. For two-string applications, connect a 0.1μF ceramic capacitor from DR6 to GND.Drain of Internal Switch 5.Drain of Internal Switch 4.Drain of Internal Switch 3.Drain of Internal Switch 2.Drain of Internal Switch 1.Source of Internal Switch 1.Charge Pump Capacitor Positive Connection. Connect a 0.1µF ceramic capacitor from CPP to CPN.Charge Pump Capacitor Negative Connection. Connect a 0.1µF from CPP to CPN.After startup, can be optionally configured with UART to drive a clock signal to other devices, or act as a pass-through for the CLKIN input.Open-Drain Fault Indicator. Goes low when a fault condition is present.Connect external bypass capacitor to GND.Exposed Pad Ground Connection. Connect this pad to a contiguous ground plane.