(TL75xM-Q1) AUTOMOTIVE LOW-DROPOUT VOLTAGE REGULATORS

TL750M-Q1, TL751M-Q1 Series www.ti.com SGLS312F – SEPTEMBER 2005 – REVISED JUNE 2007 AUTOMOTIVE LOW-DROPOUT VOLTAGE REGULATORS FEATURES • • Qualified for Automotive Applications Customer-Specific Configuration Control Can Be Supported Along With Major-Change Approval Low Dropout Voltage, Less Than 0.6 V at 750 mA • • • • • • Low Quiescent Current TTL- and CMOS-Compatible Enable on TL751M Series Load-Dump Protection Overvoltage Protection Internal Thermal Overload Protection Internal Overcurrent-Limiting Circuitry • DESCRIPTION The TL750M and TL751M series are low-dropout positive voltage regulators specifically designed for automotive applications. The TL750M and TL751M series incorporate onboard overvoltage and current-limiting protection circuitry to protect the devices and the regulated system. Both series are fully protected against load-dump and reverse-battery conditions. Load-dump protection is up to a maximum of 60 V at the input of the device. Low quiescent current, even during full-load conditions, makes the TL750M and TL751M series ideal for use in applications that are permanently connected to the vehicle battery. The TL750M and TL751M series offers 5-V and 8-V options. The TL751M series has the addition of an enable (ENABLE) input. The ENABLE input gives complete control over power up, allowing sequential power up or shutdown. When ENABLE is high, the regulator output is placed in the high-impedance state. The ENABLE input is TTL and CMOS compatible. www.DataSheet4U.com The TL750Mxx and TL751Mxx are characterized for operation over the virtual junction temperature range –40°C to 125°C. AVAILABLE OPTIONS TJ VO NOM (V) 5 –40°C to 125°C 8 5 8 PACKAGE TO-263-3/KTT, Reel of 500 TO-263-3/KTT, Reel of 500 TO-263-5/KTT, Reel of 500 TO-263-5/KTT, Reel of 500 ORDERABLE PART NUMBER TL750M05QKTTRQ1 TL750M08QKTTRQ1 TL751M05QKTTRQ1 TL751M08QKTTRQ1 TOP SIDE MARKING TL750M05Q1 TL750M08Q1 TL751M05Q1 TL751M08Q1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2005–2007, Texas Instruments Incorporated TL750M-Q1, TL751M-Q1 Series www.ti.com SGLS312F – SEPTEMBER 2005 – REVISED JUNE 2007 TL750M . . . KTT (3 Pin Shown) (TOP VIEW) TL751M . . . KTT (5 Pin Shown) (TOP VIEW) OUTPUT COMMON COMMON INPUT O NC OUTPUT COMMON INPUT ENABLE N C I O C I E A. The COMMON terminal is in electrical contact with the mounting base. NC – No internal connection TL751Mxx FUNCTIONAL BLOCK DIAGRAM INPUT ENABLE Enable Current Limiting 28 V Bandgap _ + Overvoltage/ Thermal Shutdown COMMON OUTPUT 2 Submit Documentation Feedback TL750M-Q1, TL751M-Q1 Series www.ti.com SGLS312F – SEPTEMBER 2005 – REVISED JUNE 2007 ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) VALUE / UNIT Continuous input voltage Transient input voltage (see Figure 4) Continuous reverse input voltage Transient reverse input voltage θJA TJ Tstg (1) (2) Package thermal impedance (2) (3) Virtual junction temperature range Storage temperature range t = 100 ms KTT package (3 pin) KTT package (5 pin) 26 V 60 V –15 V –50 V 26.9°C/W 26.5°C/W –40°C to 150°C –65°C to 150°C (3) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability. Due to variation in individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be activated at power levels slightly above or below the rated dissipation. The package thermal impedance is calculated in accordance with JESD 51. RECOMMENDED OPERATING CONDITIONS MIN VI VIH VIL IO TJ Input voltage High-level ENABLE input voltage Low-level ENABLE input voltage Output current Operating virtual junction temperature TL75xM05 TL75xM08 TL751Mxx TL751Mxx TL75xMxx TL75xMxx –40 6 9 2 0 MAX 26 26 15 0.8 750 125 UNIT V V V mA °C TL751Mxx ELECTRICAL CHARACTERISTICS VI = 14 V, IO = 300 mA, TJ = 25°C PARAMETER Response time, ENABLE to output (start-up) TL751Mxx TYP 50 UNIT µs Submit Documentation Feedback 3 TL750M-Q1, TL751M-Q1 Series www.ti.com SGLS312F – SEPTEMBER 2005 – REVISED JUNE 2007 TL750M05/TL751M05 ELECTRICAL CHARACTERISTICS VI = 14 V, IO = 300 mA, ENABLE at 0 V for TL751M05, TJ = –40°C to 125°C (unless otherwise noted) (1) PARAMETER Output voltage Line regulation Power-supply ripple rejection Load regulation Dropout voltage (2) Current consumption Iq = II – IO Shutdown current (TL751M05 only) (1) (2) TEST CONDITIONS VI = 6 V to 26 V VI = 9 V to 16 V, VI = 6 V to 26 V, VI = 8 V to 18 V, IO = 5 mA to 750 mA IO = 500 mA, TJ = 25°C IO = 750 mA, TJ = 25°C IO = 750 mA IO = 10 mA ENABLE VIH ≥ 2 V 60 IO = 250 mA IO = 250 mA f = 120 Hz TL750M05 TL751M05 MIN 4.85 TYP 5 10 12 55 20 50 0.5 0.65 75 5 200 MAX 5.15 25 50 V mV dB mV V mA µA UNIT Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF tantalum capacitor on the output, with equivalent series resistance within the guidelines shown in Figure 4. Measured when the output voltage, VO, has dropped 100 mV from the nominal value obtained at VI = 14 V TL750M08/TL751M08 ELECTRICAL CHARACTERISTICS VI = 14 V, IO = 300 mA, ENABLE at 0 V for TL751M08, TJ = –40°C to 125°C (unless otherwise noted) (1) PARAMETER Output voltage Line regulation Power-supply ripple rejection Load regulation Dropout voltage (2) Current consumption Iq = II – IO Shutdown current (TL751M08 only) (1) (2) TEST CONDITIONS VI = 6 V to 26 V VI = 10 V to 17 V, VI = 9 V to 26 V, VI = 11 V to 21 V, IO = 5 mA to 750 mA IO = 500 mA, TJ = 25°C IO = 750 mA, TJ = 25°C IO = 750 mA, TJ = 25°C IO = 10 mA ENABLE VIH ≥ 2 V 60 IO = 250 mA IO = 250 mA f = 120 Hz TL750M08 TL751M08 MIN 7.76 TYP 8 12 15 55 24 80 0.5 0.65 75 5 200 MAX 8.24 40 68 V mV dB mV V mA µA UNIT Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF tantalum capacitor on the output, with equivalent series resistance within the guidelines shown in Figure 4. Measured when the output voltage, VO, has dropped 100 mV from the nominal value obtained at VI = 14 V 4 Submit Documentation Feedback TL750M-Q1, TL751M-Q1 Series www.ti.com SGLS312F – SEPTEMBER 2005 – REVISED JUNE 2007 PARAMETER MEASUREMENT INFORMATION The TL750Mxx and TL751Mxx are low-dropout regulators. The output capacitor value and the parasitic equivalent series resistance (ESR) affect the bandwidth and stability of the control loop for these devices. For this reason, the capacitor and ESR must be carefully selected for a given operating temperature and load range. Figure 2 and Figure 3 can be used to establish the appropriate capacitance value and ESR for the best regulator transient response. Figure 2 shows the recommended range of ESR for a given load with a 10-µF capacitor on the output. Figure 2 also shows a maximum ESR limit of 2 Ω and a load-dependent minimum ESR limit. For applications with varying loads, the lightest load condition should be chosen because it is the worst case. Figure 3 shows the relationship of the reciprocal of ESR to the square root of the capacitance, with a minimum capacitance limit of 10 µF and a maximum ESR limit of 2 Ω. This figure establishes the amount that the minimum ESR limit shown in Figure 2 can be adjusted for different capacitor values. For example, where the minimum load needed is 200 mA, Figure 2 suggests an ESR range of 0.8 Ω to 2 Ω for 10 µF. Figure 3 shows that changing the capacitor from 10 µF to 400 µF can change the ESR minimum by greater than 3/0.5 (or 6). Therefore, the new minimum ESR value is 0.8/6 (or 0.13 Ω). This allows an ESR range of 0.13 Ω to 2 Ω, achieving an expanded ESR range by using a larger capacitor at the output. For better stability in low-current applications, a small resistance placed in series with the capacitor (see Table 1) is recommended, so that ESRs better approximate those shown in Figure 2 and Figure 3. Table 1. Compensation for Increased Stability at Low Currents MANUFACTURER AVX KEMET CAPACITANCE 15 µF 33 µF Applied Load Current Load Voltage ∆VL ∆VL = ∆IL × ESR ESR TYP 0.9 Ω 0.6 Ω ∆IL PART NUMBER TAJB156M010S T491D336M010AS ADDITIONAL RESISTANCE 1Ω 0.5 Ω Figure 1. Submit Documentation Feedback 5 TL750M-Q1, TL751M-Q1 Series www.ti.com SGLS312F – SEPTEMBER 2005 – REVISED JUNE 2007 0.04 Equivalent Series Resistance (ESR) - & CL = 10 µF CI = 0.1 µF f = 120 Hz 2.5 This Region Not Recommended for Operation 0.035 0.03 CL 0.5 0.4 Max ESR Boundary 0.025 0.02 0.015 0.01 0.005 0 Region of Best Stability 0.3 0.2 0.1 Min ESR Boundary Potential Instability Region 0 0 0.1 0.2 0.3 0.4 IL - Load Current Rang e - A 0.5 0 Figure 2. 6 Submit