Data Sheet

LTC9105

ABSOLUTE MAXIMUM RATINGS

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Rev. A | 3 of 22

Table 1. Absolute Maximum Ratings

Parameter

Rating

VIN, RSIG, SDAOUT, SDAIN, SCL, AD0, PWRGD,

SDAIN Voltages

−0.3V to 100V

RCLSA, RCLSB Voltages

−0.3V to 2V

RCLSA, RCLSB Current

−50mA

GATE, SNSP Voltages

−0.3V to 80V

AUX, BYP, M1, M0 Voltage

−0.3V to 5.5V

SNSN Voltage

−2V to 0.3V

Stresses at or above those listed under Absolute Maximum Ratings

may cause permanent damage to the product. This is a stress

rating only; functional operation of the product at these or any other

conditions above those indicated in the operational section of this

specification is not implied. Operation beyond the maximum operat-

ing conditions for extended periods may affect product reliability.

Absolute Maximum Voltages are specified with respect to RTN (pins

7, 19, and exposed pad 21) connected together.

ESD CAUTION

ESD (electrostatic discharge) sensitive device. Charged devi-

ces and circuit boards can discharge without detection. Although

this product features patented or proprietary protection circuitry,

damage may occur on devices subjected to high energy ESD.

Therefore, proper ESD precautions should be taken to avoid

performance degradation or loss of functionality.

THERMAL RESISTANCE

Thermal performance is directly linked to PCB design and operating

environment. Careful attention to PCB thermal design is required.

Table 2. Thermal Resistance

Package Type1

θJA2

θJC3

Unit

UH-20-1

34

3

°C/W

1 Test Condition 1: thermal impedance simulated values are based upon use of

2S2P JEDEC PCB. See the Order Information.

2 θJA is the natural convection junction-to-ambient thermal resistance measured

in a one cubic foot sealed enclosure.

3 θJC is the junction-to-case thermal resistance.