LM9073T/NOPB

OBSOLETE LM9073 www.ti.com SNVS076D – MAY 2000 – REVISED APRIL 2013 LM9073 Dual High Current Low-Dropout System Regulator Check for Samples: LM9073 FEATURES DESCRIPTION • • • • The LM9073 is a high performance voltage regulator system with operational and protection features that address many requirements of automotive applications. Two regulated outputs are provided. The main regulator provides a precision 2% tolerance 5V output at 700mA with a low dropout characteristic. The second output, an External Supply regulator, provides a 5V output with 2% tolerance for load currents up to 100mA. This External Supply output is fully protected from short circuit to ground or the unregulated input supply (ignition or battery potentials in automotive applications) which makes it suitable for powering remotely located load circuits or subsystems. 1 2 • • • • • • • • • • Two 5V Regulated Outputs: 700mA, 2% Main Output 100mA, 2% External Supply Output External Supply Output Protected from Shorts to Battery Good EMI (1MHz to 400MHz, BCI) Immunity Separate ON/OFF and Keep-Alive Control Inputs Less than 100µA Quiescent Current in OFF State Programmable Delayed Reset Output Adjustable Threshold Voltage for Generating Reset Built-in System Watchdog Timer Input Transient Protection Over 60V to −45V Less than 1V Dropout at Full Load Wide −40°C to 125°C Operating Temperature Range TO−220 Power Package APPLICATIONS • • • • Automotive Module Supply Power Conditioning Remote Sub−system Powering Continuous Operation for Save Outines and E2PROM Programing After Power Down Command Safety Relates Systems − EMC Operational with a System Watchdog Monitor The LM9073 also contains a programmable delayed system reset output. Two control inputs are provided. An ON/OFF input intended for connection to an ignition switch, and a Keep Alive input whereby a system can remain powered after ignition has been switched OFF. Additionally, a watchdog function is built in to enhance system operationally reliability. For EMC concerns the LM9073 remains fully operational and does not generate false rest signals while subjected to greater than 100mA, 1MHz to 400MHz bulk current injection signals on the input supply and External Supply output lines. Connection Diagram Figure 1. 11-Lead TO−220 (Top View) See NDJ0011B Package 1 2 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. All trademarks are the property of their respective owners. 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 © 2000–2013, Texas Instruments Incorporated OBSOLETE LM9073 SNVS076D – MAY 2000 – REVISED APRIL 2013 www.ti.com Block Diagram These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 2 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LM9073 OBSOLETE LM9073 www.ti.com SNVS076D – MAY 2000 – REVISED APRIL 2013 Absolute Maximum Ratings (1) (2) −45V to 45V Input Voltage Input Voltage (transient, t≤400mS) Forced Output Voltages 60V Main Output External Supply Output ON/OFF Input Voltage (3) −0.3V to 7V −0.3V to 27V −0.3V to 16V ON/OFF Input Current ±20mA Keep Alive In, Reset Out, CDELAY, Reset Adjust,Watchdog Trigger −0.3V to 7V In, C Watchdog Junction Temperature 150°C Storage Temperature −65°C to 150°C ESD Susceptibility (4) 2000V Lead temperature (Soldering, 10 Sec) 265°C (1) (2) (3) (4) “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. “Operating Ratings” indicate conditions for which the device is functional, but do not ensure specific performance limits. “Electrical Characteristics” state DC and AC electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication of device performance. If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. The ON/OFF input is internally clamped to a 7V zener diode through a 1KΩ resistor. Human body model, 150 pFcapacitor discharged through a 1.5 kΩ resistor. Operating Ratings (1) Input Voltage Range 6V to 27V −40°C to 125°C Ambient Temperature Range Thermal Resistance θJC 4°C/W θJA 43°C/W (1) “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. “Operating Ratings” indicate conditions for which the device is functional, but do not ensure specific performance limits. “Electrical Characteristics” state DC and AC electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication of device performance. Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LM9073 3 OBSOLETE LM9073 SNVS076D – MAY 2000 – REVISED APRIL 2013 www.ti.com Electrical Characteristics The following specifications apply for 6V ≤ vIN ≤ 19V, tCASE = 25°C unless otherwise specified. COUT ≥ 6µF with 0.3Ω ≤ ESR ≤ 3.0Ω on each regulator output. Symbol Parameter LM9073 Conditions Min Max Units MAIN REGULATOR 10mA ≤ ILOAD ≤ 700mA 4.9 5.1 V VMAIN Output Voltage 19V ≤ VIN ≤ VSD, 5mA ≤ ILOAD ≤ 700mA 4.8 5.2 V RMLOAD Load Regulation VIN = 16V, 10mA ≤ ILOAD ≤ 700mA 25 mV RMLINE Line Regulation ILOAD = 700mA, 8V ≤ VIN ≤ 16V 25 mV VMDO Dropout Voltage, VIN− VMAIN VIN > 5.5V, 10mA ≤ ILOAD ≤ 700mA (1) 1 V VSD Overvoltage Shutdown Threshold IMSC Output Short Circuit Current RL = 1Ω PSRR Ripple Rejection VIN = 9V, 50Hz ≤ freq ≤ 20kHZ, VRIPPLE = 4V P−P 40 3mA ≤ ILOAD ≤ 100mA 4.9 5.1 V 19V ≤ VIN ≤ VSD 3mA ≤ ILOAD ≤ 100mA 4.8 5.2 V 30 36 V 2000 mA dB External Supply Regulator VEXT Output Voltage RELOAD Load Regulation VIN = 16V, 3mA ≤ ILOAD ≤ 100mA 25 mV RELINE Line Regulation ILOAD = 100mA, 8V ≤ VIN ≤ 16V 25 mV 0.8 V VEDO Dropout voltage, VIN − VEXT VSD Overvoltage Shutdown Threshold IESC Output Short Circuit Current VESC Output Short Circuit PSRR Ripple Rejection VIN > 5.5V, 3mA ≤ ILOAD ≤ 100mA (1) 30 RL = 1Ω No effect on other functions VIN = 9V, 50Hz ≤ freq ≤ 20kHZ, VRIPPLE = 4VPP −0.3 36 V 250 mA 27 V 40 dB Input Current IQOFF Quiescent Input Current with Both Regulators OFF. 8V ≤ VIN ≤ 16V 100 µA 16V ≤ VIN ≤ 42V 10 mA IQ No Load Quiescent Current 8V ≤ VIN ≤ 19V, IL = 0mA 15 mA INON Additional Input Current with both Regulators ON VIN ≥ 8V, ILTOTAL = IMAIN + ILEXT ILTOTAL = 700mA + 100mA = 800mA 1.2 X ILTOTAL (2) LINDO Additional Input Current when in Dropout 0V < VIN < 8V ILTOTAL = IMAIN + ILEXT ILTOTAL = 700mA + 100mA = 800mA X ILTOTAL 1.5 Reset Output VMAIN output controls Reset Reset Adjust (pin 11 ) open circuited VTHRL Low Switching Threshold Reset Adjust (pin 11) shorted to ground VTHRH High Switching Threshold VMAIN output controls Reset VLOW Logic Low Output Threshold 1V ≤ VMAIN ≤ VTHRL RRESET = 50kΩ to VMAIN VHIGH Logic High Output Threshold Normal opeation, VTHRL≤ VMAIN ≤ THRH,, I SOURCE = 0 RP−U Internal Pull-Up Resistance TDELAY Reset Delay Interval (1) (2) 4 CDELAY = 0.1µF 4.0 4.2 V 4.5 4.7 V 5.35 5.75 V 0.4 V VMAIN −50mV VMAIN V 2.4 6.0 kΩ 35 70 mS The dropout voltage specifications actually indicate the saturation voltage of the PNP power transistors used in each regulator. Over the full load current and temperature ranges the Main regulator will output at least 4.5V and the External Supply regulator at lease 4.7V with an input voltage of only 5.5V The input quiescent current will increase when the regulators are in dropout conditions. The amount of additional input current is a direct function of the to a load current on both outputs. The peak increase in current is limited to 50% of the total load current. Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LM9073 OBSOLETE LM9073 www.ti.com SNVS076D – MAY 2000 – REVISED APRIL 2013 Electrical Characteristics (continued) The following specifications apply for 6V ≤ vIN ≤ 19V, tCASE = 25°C unless otherwise specified. COUT ≥ 6µF with 0.3Ω ≤ ESR ≤ 3.0Ω on each regulator output. Symbol Parameter Conditions LM9073 Min Max Units TRISE Output Rise Time From 10% VMAIN to 90% VMAIN CLRESET = 50pF 1.5 µS TFALL Output Fall Time From 90% VMAIN to 10% VMAIN CLRESET = 50pF 0.5 µS .08 V Watchdog VTRIGL Trigger Input Logic Low Voltage VTRIGR Trigger Input Logic High Level TWD Watchdog Refresh Window TPW Watchdog Trigger Pulse Width 10 RTRIG Trigger Input Pull-down Resistance 2 CWATCHDOG = 0.1µF (low leakage) IWATCHDOG for charging the watchdog 35 V 70 mS 5 40 kΩ µS Control Inputs VON ON Threshold for ON/OFF Input Rseries = 22kΩ 3.5 4.5 V VOFF OFF Threshold for ON/OFF Inpu Rseries = 22kΩ (3) 1.5 2.5 V ION/OFF ON/OFF Input Current 1.4V ≤ VON/OFF ≤ 4.5V 1 12 µA −0.3V ≤ VON/OFF ≤ 7V (4) −1 5 mA ONK−A Turn ON Threshold for Keep Alive Input 2 OFFK−A Turn OFF Threshold for Keep Alive Input RP−D Pull−Down Resistance at Keep Alive Input 0V ≤ VK−A ≤ 5V (3) (4) (5) See (5) 5 V 0.8 V 40 kΩ If either control input is left open circuited the regulators will turn OFF. The ON/OFF input is internally clamped to a 7V zener diode through a 1KΩ resistor. If either control input is left open circuited the regulators will turn OFF. Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LM9073 5 OBSOLETE LM9073 SNVS076D – MAY 2000 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics 6 Quiescent Input Current vs. Input Voltage Turn-On Characteristic Figure 2. Figure 3. Turn-Off Characteristic Normalized Output Voltages vs Temperature Figure 4. Figure 5. Output Voltages at Input Voltage Extremes Main Output Dropout Voltage vs Load Current Figure 6. Figure 7. Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LM9073 OBSOLETE LM9073 www.ti.com SNVS076D – MAY 2000 – REVISED APRIL 2013 Typical Performance Characteristics (continued) External Supply Output Short Circuit Current Output Short Circuit Current vs Temperature Figure 8. Figure 9. Watchdog and Reset Delay Time vs Temperature Maximum Power Dissipation 25 POWER DISSIPATION (W) Infinite Heat Sink 20 15 TO-220 with 10oC/W Heat Sink 10 5 No Heat Sink 0 -50 -25 0 25 50 75 100 125 o AMBIENT TEMPERATURE ( C) Figure 11. Figure 10. Output Capacitor ESR Figure 12. Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated Product Folder Links: LM9073 7 OBSOLETE LM9073 SNVS076D – MAY 2000 – REVISED APRIL 2013 www.ti.com Operational Characteristics Figure 13. Control Logic Truth Table ON/OFF Input 8 Keep-Alive Input Main Output Voltage External Supply Output Reset Output Voltage Operating Condition L L 0V 0V 0V OFF, Input curent < 100µA Rising Edge L 5V 5V Rising after delay Outputs turn ON, Power ON delayed reset H X 5V 5V 5V Normal ON condition H X