LM9076Q LM9076Q 150mA Ultra-Low Quiescent Current LDO Regulator with Delayed Reset Output Literature Number: SNVS713A LM9076Q General Description Features The LM9076Q is a ±3%, 150 mA logic controlled voltage regulator. The regulator features an active low delayed reset output flag which can be used to reset a microprocessor system at turn-ON and in the event that the regulator output voltage falls below a minimum value. An external capacitor programs a delay time interval before the reset output pin can return high. Designed for automotive and industrial applications, the LM9076Q contains a variety of protection features such as thermal shutdown, input transient protection and a wide operating temperature range. The LM9076Q uses an PNP pass transistor which allows low drop-out voltage operation. ■ AEC-Q100 Grade1 qualified (-40°C to +125°C) ■ Available with 5.0V or 3.3V output voltage ■ Ultra Low Ground Pin Current, 25 μA typical for 100 μA load ■ VOUT initial accuracy of ±1.5% ■ VOUT accurate to ±3% over Load and Temperature ■ ■ ■ ■ ■ Conditions Low Dropout Voltage, 200 mV typical with 150 mA load Low Off State Ground Pin current for LM9076QBMA Delayed RESET output pin for low VOUT detection +70V/-50V Voltage Transients Operational VIN up to +40V Typical Applications 30154329 LM9076QS-x.x In 5 lead TO-263 package 30154330 LM9076QBMA-x.x in 8 lead SO package © 2011 Texas Instruments Incorporated 301543 www.ti.com 150mA Ultra-Low Quiescent Current LDO Regulator with Delayed Reset Output 150mA Ultra-Low Quiescent Current LDO Regulator with Delayed Reset Output LM9076Q November 16, 2011 LM9076Q Connection Diagrams 30154328 Top View Part Numbers LM9076QBMA-3.3 and LM9076QBMA-5.0 See NS SOIC Package Number M08A 30154327 Top View Part Numbers LM9076QS-3.3 and LM9076QS-5.0 See NS TO-263 Package NumberTS5B Ordering Information Output Voltage Package Type Order Number Package Marking LM9076QBMA-3.3 SO-8 3.3 TO-263–5 SO-8 5.0 TO-263–5 9076BQMA3.3 Shipped As LM9076QBMAX-3.3 9076BQMA3.3 Tape and Reel of 2500 LM9076QS-3.3 LM9076QS3.3 Rail of 45 LM9076QSX-3.3 LM9076QS3.3 LM9076QBMA-5.0 9076BQMA5.0 LM9076QBMAX-5.0 9076BQMA5.0 Feature Rail of 95 AEC-Q100 Grade 1 Tape and /reel of 500 qualified. Automotive Grade Production Rail of 95 Flow. * Tape and Reel of 2500 LM9076QS-5.0 LM9076QS5.0 Rail of 45 LM9076QSX-5.0 LM9076QS5.0 Tape and Reel of 500 Note: * Automotive grade (Q) product incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies. Reliability qualification is compliant with the requirements and temperature grades defined in the AEC-Q100 standard. Automotive grade products are identified with the letter Q. For more information go to http://www.national.com/ automotive. www.ti.com 2 VIN(DC) VIN(+Transient) t< 10ms, Duty Cycle <1% VIN(-Transient) t< 1ms, Duty Cycle <1% SHUTDOWN Pin RESET Pin CDELAY Pin Storage Temperature Junction Temperature (TJ ) ESD, HBM, per AEC - Q100 - 002 ESD, MM, per AEC - Q100 - 003 (Note 1) VIN Pin VSHUTDOWN Pin Junction Temperature Thermal Resistance TS5B (Note 6) -15V to +55V +70V -50V -15V to +52V -0.3V to 20V -0.3V to VOUT +0.3V -65°C to +150°C +175C +/-2 kV +/-250V 5.35V to 40V 0V to 40V −40°C < TJ < +125°C θja 75°C/W θjc Thermal Resistance M08A (Note 6) 2.9°C/W θja 156°C/W θjc 59°C/W Electrical Characteristics for LM9076Q–3.3 The following specifications apply for VIN = 14V; ILOAD = 10 mA; TJ = +25C; COUT = 10 μF, 0.5Ω < ESR < 4.0Ω; unless otherwise specified. Bold values indicate −40°C ≤ TJ ≤ +125°C.(Note 5, Note 4) Minimum and Maximum limits are guaranteed through test, design or statistical correlation. Symbol Parameter Conditions Min Typ Max Units 3.251 3.30 3.349 V 1 mA ≤ ILOAD ≤ 150 mA 3.234 3.30 3.366 V 1mA ≤ ILOAD ≤ 150 mA 3.201 3.30 3.399 V 2.970 3.30 3.630 V – 0 250 mV −300 0 – mV 9.0V ≤ VIN ≤ 16V, ILOAD = 10 mA – 4 25 mV 16V ≤ VIN ≤ 40V, ILOAD = 10 mA – 17 35 mV Load Regulation 1 mA ≤ ILOAD ≤ 150 mA – 42 60 mV ILOAD = 10 mA – 30 50 mV Dropout Voltage ILOAD = 50 mA – 80 – mV ILOAD = 150 mA – 150 250 mV 9V ≤ VIN ≤ 16V, ILOAD = 100 uA – 25 45 μA 9V ≤ VIN ≤ 40V, ILOAD = 10 mA – 125 160 μA 9V ≤ VIN ≤ 40V, ILOAD = 50 mA – 0.6 – mA 9V ≤ VIN ≤ 16V, ILOAD = 150 mA – 3.6 4.5 mA 200 400 750 mA LM9076Q–3.3 REGULATOR CHARACTERISTICS −20°C ≤ TJ ≤ 85°C Output Voltage VIN = 60V, VOUT RLOAD = 1 kΩ, t ≤ 40ms Output Voltage Off LM9076Q BMA only Reverse Battery ΔVOUT VDO IGND ISC Line Regulation Ground Pin Current VOUT Short Circuit Current VSHUTDOWN ≥ 2V, RLOAD = 1 kΩ VIN = -15V, RLOAD = 1 kΩ VIN = 14V, RLOAD = 1Ω 3 www.ti.com LM9076Q Operating Ratings Absolute Maximum Ratings (Note 1) LM9076Q Symbol Parameter PSRR Ripple Rejection Conditions VIN = (14VDC) + (1VRMS @ 120Hz) ILOAD = 50 mA Min Typ Max Units 50 60 – dB – 1.3 2.0 V 0.83 0.89 0.94 X VOUT (Nom) VOUT X 0.90 VOUT X 0.99 VOUT V – 0.2 0.3 V RESET PIN CHARACTERISTICS VOR Minimum VIN for valid (Note 3) RESET Status VTHR VOUT Threshold for RESET Low VOH RESET pin high voltage External pull-up resistor to VOUT = 100 kΩ VOL RESET pin low voltage CDELAY < 4.0V, ISINK = 250 µA (Note 3) CDELAY PIN CHARACTERISTICS IDELAY CDELAY Charging Current VIN = 14V, VDELAY = 0V -0.70 -0.42 -0.25 uA VOL CDELAY pin low voltage VOUT < 4.0V, ISINK = IDELAY – 0.100 – V 4.7 7.8 13.2 ms tDELAY www.ti.com Reset Delay Time VIN = 14V, CDELAY = 0.001 uF VOUT rising from 0V, Δt from VOUT > VOR to RESET pin HIGH 4 The following specifications apply for VIN= 14V; VSHUTDOWN = Open; ILOAD = 10 mA; TJ = +25°C; COUT = 10 µF, 0.5Ω < ESR < 4.0Ω; unless otherwise specified. Bold Values indicate −40°C ≤ TJ ≤ 125°C. (Note 4), (Note 5) Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Symbol Parameter Conditions Min Typ Max Units 4.925 5.00 5.075 V 1 mA ≤ ILOAD ≤ 150 mA 4.900 5.00 5.100 V 1 mA ≤ ILOAD ≤ 150 mA 4.850 5.00 5.150 V 4.500 5.00 5.500 V – 0 250 mV −300 0 – mV 9.0V ≤ VIN ≤ 16V, ILOAD = 10 mA – 4 25 mV 16V ≤ VIN ≤ 40V, ILOAD = 10 mA – 17 35 mV Load Regulation 1 mA ≤ ILOAD ≤ 150 mA – 42 60 mV ILOAD = 10 mA – 30 50 mV Dropout Voltage ILOAD = 50 mA – 80 – mV ILOAD = 150 mA – 150 250 mV 9V ≤ VIN ≤ 16V, ILOAD = 100 uA – 25 45 μA 9V ≤ VIN ≤ 40V, ILOAD = 10 mA – 125 160 μA 9V ≤ VIN ≤ 40V, ILOAD = 50 mA – 0.6 – mA 9V ≤ VIN ≤ 16V, ILOAD = 150 mA – 3.6 4.5 mA Ground Pin Current in 9V ≤ VIN ≤ 40V, Shutdown Mode VSHUTDOWN = 2V – 15 25 μA 200 400 750 mA 50 60 – dB – 1.3 2.0 V 0.83 0.89 0.94 X VOUT (Nom) VOUT X 0.90 VOUT X 0.99 VOUT V – 0.2 0.3 V LM9076Q–5.0 REGULATOR CHARACTERISTICS −20°C ≤ TJ ≤ 85°C Output Voltage VIN = 60V, VOUT RLOAD = 1 kΩ, t ≤ 40ms Output Voltage Off LM9076Q BMA only Reverse Battery ΔVOUT VDO Line Regulation Ground Pin Current IGND ISC VOUT Short Circuit Current PSRR Ripple Rejection VSHUTDOWN ≥ 2V, RLOAD = 1 kΩ VIN = -15V, RLOAD = 1 kΩ VIN = 14V, RLOAD = 1Ω VIN = (14VDC) + (1VRMS @ 120Hz) ILOAD = 50 mA RESET PIN CHARACTERISTICS VOR Minimum VIN for valid (Note 3) RESET Status VTHR VOUT Threshold for RESET Low VOH RESET pin high voltage External pull-up resistor to VOUT = 100 kΩ VOL RESET pin low voltage CDELAY < 4.0V, ISINK = 250 µA (Note 3) 5 www.ti.com LM9076Q Electrical Characteristics for LM9076Q–5.0 LM9076Q Symbol Parameter Conditions Min Typ Max Units CDELAY PIN CHARACTERISTICS IDELAY CDELAY Charging Current VIN = 14V, VDELAY = 0V -0.70 -0.42 -0.25 uA VOL CDELAY pin low voltage VOUT < 4.0V, ISINK = IDELAY – 0.100 – V 7.1 11.9 20.0 ms tDELAY Reset Delay Time VIN = 14V, CDELAY = 0.001 uF VOUT rising from 0V, Δt from VOUT > VOR to RESET pin HIGH SHUTDOWN CONTROL LOGIC — LM9076QBMA-5.0 Only VIL(SD) VSHUTDOWN pin falling SHUTDOWN Pin Low from 5.0V until VOUT Threshold Voltage >4.5V (VOUT = On) 1 1.5 – V VIH(SD) VSHUTDOWN pin rising SHUTDOWN Pin High from 0V until VOUT < 0.5V Threshold Voltage (VOUT = Off) – 1.5 2 V – 35 – μA IIH(SD) VSHUTDOWN = 40V SHUTDOWN Pin High VSHUTDOWN = 5V Bias Current VSHUTDOWN = 2V – 15 35 μA – 6 10 μA IIL(SD) SHUTDOWN Pin Low VSHUTDOWN = 0V Bias Current – 0 – μA Note 1: Absolute Maximum Ratings indicate the limits beyond which the device may cease to function, and/or damage to the device may occur. Note 2: Operating Ratings indicate conditions for which the device is intended to be functional, but does not guarantee specific performance limits. For guaranteed specifications and conditions refer to the Electrical Characteristics Note 3: Not Production tested, Guaranteed by Design. Minimum, Typical, and/or Maximum values are provided for informational purposes only. Note 4: Pulse testing used maintain constant junction temperature (TJ ). Note 5: The regulated output voltage specification is not guaranteed for the entire range of VIN and output loads. Device operational range is limited by the maximum junction temperature (T J ). The junction temperature is influenced by the ambient temperature (T A ), package selection, input voltage (VIN ), and the output load current. When operating with maximum load currents the input voltage and/or ambient temperature will be limited. When operating with maximum input voltage the load current and/or the ambient temperature will be limited. Note 6: Worst case (FREE AIR) per EIA/JESD51–3. www.ti.com 6 LM9076Q Typical Performance Characteristics Output Capacitor ESR Output Capacitor ESR 30154331 30154332 Output Voltage vs Low Input Voltage Output Voltage vs Low Input Voltage 30154333 30154334 Ground Pin Current vs Low Input Voltage Ground Pin Current vs Low Input Voltage 30154335 30154336 7 www.ti.com LM9076Q Ground Pin Current vs Load Current Ground Pin Current vs Load Current 30154337 30154338 Output Voltage vs Input Voltage Output Voltage vs Input Voltage 30154339 30154340 Output Voltage vs Junction Temperature Output Voltage vs Junction Temperature 30154341 www.ti.com 30154342 8 LM9076Q Dropout Voltage vs Load Current Load Transient Response 30154344 30154343 Load Transient Response Line Transient Response 30154345 30154346 Line Transient Response Delayed Reset Time vs Vin Normalized to VIN = 14V 30154347 30154350 9 www.ti.com LM9076Q Ripple Rejection 30154351 www.ti.com 10 REGULATOR BASICS The LM9076Q regulator is suitable for Automotive and Industrial applications where continuous connection to a battery supply is required (refer to the Typical Application circuit). The pass element of the regulator is a PNP device which requires an output bypass capacitor for stability. The minimum bypass capacitance for the output is 10 μF (refer to ESR limitations). A 22 μF, or larger, output bypass capacitor is recommended for typical applications SHUTDOWN PIN - LM9076QBMA ONLY The basic On/Off control of the regulator is accomplished with the SHUTDOWN pin. By pulling the SHUTDOWN pin high the regulator output is switched Off. When the regulator is switched Off the load on the battery will be primarily due to the SHUTDOWN pin current. When the SHUTDOWN pin is low, or left open, the regulator is switched On. When an unregulated supply, such as V BATTERY , is used to pull the SHUTDOWN pin high a series resistor in the range of 10KΩ to 50KΩ is recommended to provide reverse voltage transient protection of the SHUTDOWN pin. Adding a small capacitor (0.001uF typical) from the SHUTDOWN pin to Ground will add noise immunity to prevent accidental turn on due to noise on the supply line. INPUT CAPACITOR The LM9076Q requires a low source impedance to maintain regulator stability because critical portions of the internal bias circuitry are connected to directly to VIN. In general, a 10 μF electrolytic capacitor, located within two inches of the LM9076Q, is adequate for a majority of applications. Additionally, and at a minimum, a 0.1 μF ceramic capacitor should be located between the LM9076Q VIN and Ground pin, and as close as is physically possible to the LM9076Q itself . RESET FLAG The RESET pin is an open collector output which requires an external pull-up resistor to develop the reset signal. The external pull-up resistor should be in the range of 10 kΩ to 200 kΩ. At VIN values of less than typically 2V the RESET pin voltage will be high. For VIN values between typically 2V and approximately VOUT + VBE the RESET pin voltage will be low. For VIN values greater than approximately VOUT + VBE the RESET pin voltage will be dependent on the status of the VOUT pin voltage and the Delayed Reset circuitry. The value of VBE is typically 600 mV at 25°C and will decrease approximately 2 mV for every 1°C increase in the junction temperature. During normal operation the RESET pin voltage will be high . Any load condition that causes the VOUT pin voltage to drop below typically 89% of normal will activate the Delayed Reset circuit and the RESET pin will go low for the duration of the delay time. Any line condition that causes VIN pin voltage to drop below typically VOUT + VBE will cause the RESET pin to go low without activating the Delayed Reset circuitry. Excessive thermal dissipation will raise the junction temperature and could activate the Thermal Shutdown circuitry which, in turn, will cause the RESET pin to go low. For the LM9076QBMA devices, pulling the SHUTDOWN pin high will turn off the output which, in turn, will cause the RESET pin to go low once the VOUT voltage has decayed to a value that is less than typically 89% of normal. See Figure 2. OUTPUT CAPACITOR An output bypass capacitor is required for stability. This capacitance must be placed between the LM9076Q VOUT pin and Ground pin, as close as is physically possible, using traces that are not part of the load current path. The output capacitor must meet the requirements for minimum capacitance and also maintain the appropriate ESR value across the entire operating ambient temperature range. There is no limit to the maximum output capacitance as long as ESR is maintained. The minimum bypass capacitance for the output is 10 μF (refer to ESR limitations). A 22 μF, or larger, output bypass capacitor is recommended for typical applications. Solid tantalums capacitors are recommended as they generally maintain capacitance and ESR ratings over a wide temperature range. Ceramic capacitor types XR7 and XR5 may be used if a series resistor is added to simulate the minimum ESR requirement. See Figure 1. Aluminum electrolytic capacitors are not recommended as they are subject to wide changes in capacitance and ESR across temperature. RESET DELAY TIME When the regulator output is switched On, or after recovery from brief VOUT fault condition, the RESET flag can be can be programmed to remain low for an additional delay time. This will give time for any system reference voltages, clock signals, etc., to stabilize before the micro-controller resumes normal operation. This delay time is controlled by the capacitor value on the CDELAY pin. During normal operation the CDELAY capacitor is charged to near VOUT . When a VOUT fault causes the RESET pin to go low, the CDELAY capacitor is quickly discharged to ground. When the VOUT fault is removed, and VOUT returns to the normal operating value, the CDELAY capacitor begins charging at a typical constant 0.420 uA rate. When the voltage on the CDELAY capacitor reaches the same potential as the VOUT pin the RESET pin will be allowed to return high. The typical RESET delay time can be calculated with the following formula: 30154348 FIGURE 1. Using Low ESR Capacitors DELAY CAPACITOR The capacitor on the Delay pin must be a low leakage type since the charge current is minimal (420 nA typical) and the pin must fully charge to VOUT. Ceramic, Mylar, and polystyrene capacitor types are generally recommended, although changes in capacitance values across temperature changes will have some effect on the delay timing. Any leakage of the IDELAY current, be it through the delay capacitor or any other path, will extend the delay time, possibly to the point that the Reset pin output does not go high. 11 www.ti.com LM9076Q Application Information LM9076Q tDELAY = VOUT X (CDELAY / IDELAY ) age (VIN), and the output load current. When operating with maximum load currents the input voltage and/or ambient temperature will be limited. When operating with maximum input voltage the load current and/or the ambient temperature will be limited. Even though the LM9076Q is equipped with circuitry to protect itself from excessive thermal dissipation, it is not recommended that the LM9076Q be operated at, or near, the maximum recommended die junction temperature (TJ) as this may impair long term device reliability. The thermal protection circuity monitors the temperature at the die level. When the die temperature exceeds typically 160°C the voltage regulator output will be switched off. For the LM9076Q–3.3 with a CDELAY value of 0.001 uF and a IDELAY value of 0.420 uA the typical RESET delay time is: tDELAY =3.3V × (0.001 uF / 0.420 uA) = 7.8 ms For the LM9076Q–5.0 with a CDELAY value of 0.001 uF and a IDELAY value of 0.420 uA the typical RESET delay time is: tDELAY = 5.0V X (0.001uF / 0.420uA) = 11.9 ms THERMAL PROTECTION Device operational range is limited by the maximum junction temperature (TJ). The junction temperature is influenced by the ambient temperature (TA), package selection, input volt- 30154349 FIGURE 2. Typical Reset Pin Operational Waveforms www.ti.com 12 LM9076Q Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead (0.150" Wide) Molded SO Package NS Package Number M08A 5-Lead TO-263 NS Package Number TS5B 13 www.ti.com 150mA Ultra-Low Quiescent Current LDO Regulator with Delayed Reset Output LM9076Q Notes TI/NATIONAL INTERIM IMPORTANT NOTICE Texas Instruments has purchased National Semiconductor. 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