TLV9101IDBVR datasheet(22/50 Pages) TI1

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140ºC

3 V

0 V

150°C

16 V

100

VIN

3 V

IOUT = 30 mA

TLV9101

TA = 100°C

PD = 0.39W

JA = 138.7°C/W

TJ = 138.7°C/W × 0.39W + 100°C

TJ = 154.1°C (expected)

Normal

Operation

Output

High-Z

Time (20µs/Div)

C016

Input

Output

TLV9101, TLV9102, TLV9104

SBOS943A – FEBRUARY 2019 – REVISED APRIL 2019

www.ti.com

Product Folder Links: TLV9102

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Figure 45. No Phase Reversal

7.3.3 Thermal Protection

The internal power dissipation of any amplifier causes its internal (junction) temperature to rise. This

phenomenon is called self heating. The absolute maximum junction temperature of the TLV910x is 150°C.

Exceeding this temperature causes damage to the device. The TLV910x has a thermal protection feature that

prevents damage from self heating. The protection works by monitoring the temperature of the device and

turning off the op amp output drive for temperatures above 140°C. Figure 46 shows an application example for

the TLV9101 that has significant self heating (154°C) because of its power dissipation (0.39 W). Thermal

calculations indicate that for an ambient temperature of 100°C the device junction temperature must reach

154°C. The actual device, however, turns off the output drive to maintain a safe junction temperature. Figure 46

shows how the circuit behaves during thermal protection. During normal operation, the device acts as a buffer so

the output is 3 V. When self heating causes the device junction temperature to increase above 140°C, the

thermal protection forces the output to a high-impedance state and the output is pulled to ground through resistor

RL.

Figure 46. Thermal Protection

TLV9101IDBVR Datasheet(PDF) 22 Page - Texas Instruments

TLV9101IDBVR Datasheet(HTML) 22 Page - Texas Instruments

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