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ZHCS996D June 2012 – February 2018 TPS81256

PRODUCTION DATA.

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) ⁽¹⁾

		MIN	MAX	UNIT
Input voltage	Voltage at VIN⁽²⁾, VOUT⁽²⁾, EN⁽²⁾	–0.3	6	V
Input current	Continuous average current into VIN⁽³⁾		1.05	A
Input current	Pulsed current into VIN⁽⁴⁾		1.3	A
Power dissipation		Internally limited
Operating temperature, T_A⁽³⁾⁽⁴⁾⁽⁵⁾		–40	85	°C
Operating virtual junction temperature, T_J		–40	150	°C
Storage temperature, T_stg		–55	125	°C

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2) All voltages are with respect to network ground terminal.

(3) Limit the junction and the (top side) inductor case temperature to 110°C, limit the (top side) capacitor case temperature to 85°C for 2000h operation at maximum output power. Contact TI for more details on lifetime estimation.

(4) Limit the (top side) inductor case temperature to 140°C and the (top side) capacitor temperature to 115°C for 100h operation. Contact TI for more details on lifetime estimation.

(5) In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be derated. Maximum ambient temperature (T_A(max)) is dependent on the maximum operating junction temperature (T_J(max)), the maximum power dissipation of the device in the application (P_D(max)), and the junction-to-ambient thermal resistance of the part/package in the application (θ_JA), as given by the following equation: T_A(max)= T_J(max)–(θ_JA X P_D(max)). To achieve optimum performance, it is recommended to operate the device with a maximum junction temperature of 125°C, a maximum inductor case temperature of 125°C and a maximum capacitor case temperature of 85°C.