NSR31033-QSTBR

NSR31 series 150mA 40-V, Low Iq, Automotive LDO Datasheet (EN) 0V3 Preliminary specifications subject to change without notice Product Overview NSR31 series is 150mA low-dropout linear regulator designed for battery-direct-connection automotive applications. Wide supply voltage range from 3V to 40V makes NSR31 series a good fit for severe operating conditions including load dump, cold cranking and startstop. With 5μA quiescent current at light loads, NSR31 series is quite suitable for always-on automotive applications where standby power consumption is strictly restricted. With integrated compensation implementation, NSR31 series can be stable with low-ESR (1mΩ to 5Ω) ceramic output capacitor, ranging from 2.2μF to 100μF. The device features integrated short-circuit-to-GND and thermal shutdown protections. This device operates in ambient temperatures from –40°C to 125°C. Key Features  Qualified for Automotive Applications  3V to 40V Wide Supply Voltage Range Applications  Infotainment  Power Train  Cluster  Body Control Module  Battery Connected Always-On System Device Information Part Number Package NSR31025-Q1 SOT-223, SOT-23-5, DFN-8 NSR31033-Q1 SOT-223, SOT-23-5, DFN-8 NSR31050-Q1 SOT-223, SOT-23-5, DFN-8 NSR31133-Q1 SOT-23-5 NSR31150-Q1 SOT-23-5 Typical Application VBAT IN  Output Current Range: Up to 150mA  Low Quiescent Current: VREG OUT CIN COUT 5μA (Typ.) at No Load  Low Dropout Voltage: 650mV Typical at 150mA Load GND  Low ESR Ceramic Output Stability Capacitor (2.2μF – 100μF)  Integrated Fault Protection: Short-Circuit-to-GND protection Thermal Shutdown Copyright © 2021, NOVOSENSE Page 1 NSR31 series Index 1. PIN CONFIGURATION AND FUNCTIONS ....................................................................................................................... 3 2. ABSOLUTE MAXIMUM RATINGS ................................................................................................................................... 4 3. RECOMMENDED OPERATING CONDITIONS ................................................................................................................. 5 4. THERMAL INFORMATION ............................................................................................................................................ 5 5. SPECIFICATIONS ......................................................................................................................................................... 5 5.1. ELECTRICAL CHARACTERISTICS .................................................................................................................................................... 5 5.2. TYPICAL PERFORMANCE CHARACTERISTICS.................................................................................................................................... 6 6. DETAILED DESCRIPTION ............................................................................................................................................. 8 6.1. OVERVIEW ............................................................................................................................................................................... 8 6.2. BLOCK DIAGRAM ....................................................................................................................................................................... 8 6.3. FEATURE DESCRIPTION .............................................................................................................................................................. 9 6.3.1. Input .............................................................................................................................................................................. 9 6.3.2. Input Under-voltage Lockout (UVLO) ........................................................................................................................... 9 6.3.3. Output ........................................................................................................................................................................... 9 6.3.4. Output Current Limit .................................................................................................................................................... 9 6.3.5. Thermal Shutdown (TSD) ............................................................................................................................................. 9 6.4. TYPICAL APPLICATION ................................................................................................................................................................ 9 6.4.1. Application Circuit ........................................................................................................................................................ 9 6.4.2. Input and Output Capacitor ......................................................................................................................................... 9 7. PACKAGE INFORMATION ........................................................................................................................................... 10 7.1. SOT-223 .............................................................................................................................................................................. 10 7.2. SOT-23-5 ............................................................................................................................................................................. 10 7.3. DFN-8 .................................................................................................................................................................................. 11 8. ORDER INFORMATION ............................................................................................................................................... 12 9. REVISION HISTORY ................................................................................................................................................... 13 Copyright © 2021, NOVOSENSE Page 2 NSR31 series Datasheet (EN) 0V3 1. Pin Configuration and Functions GND 4 1 2 3 IN GND OUT Figure 1 SOT-223 Pin-out (Top View) PIN NO. SYMBOL FUNCTION 1 IN Power supply pin. 2, 4 GND Ground reference. 3 OUT Regulated output voltage pin. IN 1 NC 2 GND 3 5 OUT 4 GND Figure 2 SOT-23 (NSR310 Version) Pin-out (Top View) PIN NO. SYMBOL FUNCTION 1 IN Power supply pin. 2 NC Not connected. 3, 4 GND Ground reference. 5 OUT Regulated output voltage pin. Copyright © 2021, NOVOSENSE Page 3 NSR31 series Datasheet (EN) 0V3 GND 1 IN 2 OUT 3 5 NC 4 NC Figure 3 SOT-23 (NSR311 Version) Pin-out (Top View) PIN NO. SYMBOL FUNCTION 1 GND Ground reference. 2 IN Power supply pin. 3 OUT 4, 5 NC Regulated output voltage pin. Not connected. IN 1 NC 2 Thermal Pad 8 OUT 7 NC NC 3 6 NC GND 4 5 NC Figure 4 DFN-8 Pin-out (Top View) PIN NO. SYMBOL FUNCTION 1 IN Power supply pin. 2,3,5,6,7 NC Not connected. 4 GND Ground reference. 8 OUT Regulated output voltage pin. 2. Absolute Maximum Ratings Copyright © 2021, NOVOSENSE Page 4 NSR31 series Datasheet (EN) 0V3 Parameters Symbol Min Typ Max Unit Input Voltage of IN VIN -0.3 45 V Regulated Output Voltage VOUT -0.3 20 (≤ VIN + 0.3) V Junction Temperature TJ -40 150 °C Storage Temperature Tstg -40 150 °C Electrostatic discharge, Human-body model HBM -2000 2000 V Electrostatic discharge, Charged-device model CDM -750 750 V 3. Recommended Operating Conditions Parameters Symbol min typ max unit Power Supply Voltage VIN 3 40 V Output Current Range IOUT 150 mA Input Capacitor Value CIN 0.1 Output Capacitor Value COUT 2.2 100 μF Output Capacitor ESR Value ESR 0.001 5 Ω 1 μF 4. Thermal Information Parameters Symbol SOT-223 SOT-23-5 DFN-8 Unit IC Junction-to-Air Thermal Resistance θJA 49.6 77.1 48.0 °C/W Junction-to-board thermal resistance θJB 6.3 16 2.0 °C/W 5. Specifications 5.1. Electrical Characteristics VIN=13.5V, Ta=-40°C to 125°C. Unless otherwise noted, typical value is at Ta = 25°C. Parameters Supply voltage Copyright © 2021, NOVOSENSE Symbol Min VIN 3 Typ Max Unit 40 V Comments Page 5 NSR31 series Parameters Supply voltage threshold Datasheet (EN) 0V3 Symbol Min Typ VIN,TH1 Max Unit Comments 2.9 V VIN ramps up V VIN ramps down (Rising) Supply voltage threshold VIN,TH2 2.7 (Falling) Quiescent current IQ Output current limit IOUT_CL Dropout voltage VDropout 5 8 μA IOUT = 0mA 6 10 μA IOUT = 0.2mA 150 mA 650 mV VOUT = VOUT_SET x 0.95 IOUT = 150mA Output voltage accuracy VOUT_ERR Line regulation Load regulation Power supply ripple rejection -2 2 % VLine_Reg 30 mV VIN = 6 to 40 V, IOUT = 30 mA VLoad_Reg 10 mV VIN = 13.5 V, IOUT = 1mA to 150mA 70 dB VRipple_pp = 0.5 V, IOUT = 10 mA, frequency = 100 Hz, COUT = 2.2 μF 40 dB VRipple_pp = 0.5 V, IOUT = 10 mA, frequency = 1kHz, COUT = 2.2 μF PSRR Device thermal shutdown temperature TSD 175 °C Device thermal shutdown temperature hysteresis THYST 20 °C 5.2. Typical Performance Characteristics VIN=13.5V, Ta=-40°C to 125°C. Unless otherwise noted, typical value is at Ta = 25°C. Copyright © 2021, NOVOSENSE Page 6 3 4 2.9 3.9 2.8 3.8 2.7 3.7 Output Voltage - V Output Voltage - V NSR31 series 2.6 2.5 2.4 2.3 3.5 3.4 3.3 3.2 2.2 3.1 2.1 ILoad = 1 mA 2 -50 -25 -50 0 25 50 75 100 125 150 Junction Temperature - ℃ 4 5.8 3.5 Output Voltage - V 5.6 5.2 5 4.8 4.6 -25 0 25 50 75 100 125 150 Junction Temperature - ℃ Figure 6 3.3-V Output Voltage vs Junction Temperature 6 5.4 ILoad = 1 mA 3 Figure 5 2.5-V Output Voltage vs Junction Temperature Output Voltage - V 3.6 3 2.5 2 1.5 1 4.4 0.5 4.2 ILoad = 1 mA 4 -50 -25 0 25 50 75 100 125 150 Junction Temperature - ℃ Figure 7 5-V Output Voltage vs Junction Temperature Copyright © 2021, NOVOSENSE No Load 0 0 5 10 15 20 25 30 35 40 45 Supply Voltage - V Figure 8 3.3-V Output Voltage vs Supply Voltage Page 7 NSR31 series 700 6 600 Dropout Voltage - mV Output Voltage - V 5 4 3 2 500 400 300 200 1 100 No Load 0 0 5 10 15 20 25 30 35 40 0 45 0 Supply Voltage - V 25 50 75 100 125 150 175 Output Current - mA Figure 9 5-V Output Voltage vs Supply Voltage Figure 10 Dropout Voltage vs Output Current 6. Detailed Description 6.1. Overview NSR31 series is 150mA low-dropout linear regulator designed for battery-direct-connection automotive applications. Wide supply voltage range from 3V to 40V makes NSR31 series a good fit for severe operating conditions including load dump, cold cranking and start-stop. With 5μA quiescent current at light loads, NSR31 series is quite suitable for alwayson automotive applications where standby power consumption is strictly restricted. With integrated compensation implementation, NSR31 series can be stable with low-ESR (1mΩ to 5Ω) ceramic output capacitor, ranging from 2.2μF to 100μF. 6.2. Block Diagram Vout IN UVLO OUT Main Control Vref Band Gap Vref OCP OTP GND Figure 11 Functional Block Diagram Copyright © 2021, NOVOSENSE Page 8 NSR31 series Datasheet (EN) 0V3 6.3. Feature Description 6.3.1. Input The IN pin is a high-voltage-tolerant pin. A capacitor with a value higher than 0.1 µF is recommended to be connected close to this pin to better the transient performance. 6.3.2. Input Under-voltage Lockout (UVLO) When input voltage is lower than UVLO threshold, output is shut off as the device shuts down. 6.3.3. Output The OUT pin is the regulated by internal reference to 2.5V, 3.3V and 5V. To obtain a desired output voltage, a higher level input voltage is needed to apply in input pin. When input voltage is very close to desired output voltage in heavy load, or lower than desired output, the output tracks the input minus a drop based on the load current. 6.3.4. Output Current Limit The output has a current limit protection, when load current is higher than current limit threshold or output is shorted to ground, output current is limited at threshold level. 6.3.5. Thermal Shutdown (TSD) In normal working condition, the junction temperature should not exceed 150℃ for long-time working stability. When junction temperature exceeds thermal protection threshold, the device shuts down immediately. When the junction temperature falls below the TSD trip point minus the hysteresis of TSD, the output turns on again. 6.4. Typical Application 6.4.1. Application Circuit VBAT IN VREG OUT CIN COUT GND Figure 12 Typical application circuit of NSR31 series 6.4.2. Input and Output Capacitor For input, a decoupling capacitor is needed with a minimum 0.1 µF capacitance. The voltage rating must be greater than the maximum input voltage. A low ESR, X5R- or X7R-type ceramic capacitor is recommended. For output, the device requires an output capacitor for loop stability. The output capacitor value should be between 2.2µF and 100 µF. The ESR value range should be less than 5Ω. A low ESR, X5R- or X7R-type ceramic capacitor is recommended. Copyright © 2021, NOVOSENSE Page 9 NSR31 series Datasheet (EN) 0V3 7. Package Information 7.1. SOT-223 7.2. SOT-23-5 Copyright © 2021, NOVOSENSE Page 10 NSR31 series Datasheet (EN) 0V3 7.3. DFN-8 Copyright © 2021, NOVOSENSE Page 11 NSR31 series Datasheet (EN) 0V3 8. Order Information Orderable Part Number NSR31050-QSTBR NSR31033-QSTBR NSR31025-QSTBR NSR31050-QSTAR NSR31033-QSTAR NSR31025-QSTAR NSR31050-QDNR NSR31033-QDNR NSR31025-QDNR NSR31150-QSTAR NSR31133-QSTAR Copyright © 2021, NOVOSENSE MSL 3 3 3 3 3 3 3 3 3 3 3 Package SOT-223 SOT-223 SOT-223 SOT-23-5 SOT-23-5 SOT-23-5 DFN-8 DFN-8 DFN-8 SOT-23-5 SOT-23-5 SPQ 2500 2500 2500 3000 3000 3000 3000 3000 3000 3000 3000 Page 12 NSR31 series Datasheet (EN) 0V3 9. Revision history Revision 0V1 0V2 0V3 0V4 Description Initial version Key spec updates Order Information updates Typical performance characteristics updates Copyright © 2021, NOVOSENSE Date 2021/08 2022/01 2022/03 2022/04 Page 13