TLS835B2ELVXUMA1

OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Features • Wide input voltage range from 3.0 V to 40 V • Adjustable output voltage between 1.5 V and 6 V • Output voltage precision ≤ ±2% • Output current capability up to 350 mA • Ultra low current consumption, typical 20 µA • Very low dropout voltage, typical 100 mV, at output currents below 100 mA • Stable with ceramic output capacitor of 1 µF • Enable • Overtemperature shutdown • Output current limitation • Wide temperature range • Green Product (RoHS compliant) Potential applications • Automotive or other supply systems that are connected to the battery permanently • Automotive supply systems that need to operate in cranking condition Product validation Qualified for Automotive Applications. Product Validation according to AEC-Q100/101 Description The OPTIREG™ Linear TLS835B2ELV is a linear voltage regulator with high performance, very low dropout linear voltage and very low quiescent current. With an input voltage range of 3 V to 40 V and very low quiescent current of only 20 µA, this regulator is perfectly suitable for automotive or other supply systems permanently connected to the battery. The new loop concept combines fast regulation and very high stability while requiring only one small ceramic capacitor of 1 µF at the output. At output currents below 100 mA the device has a very low dropout voltage of only 100 mV (for an output voltage of 5 V) and 120 mV (for an output voltage of 3.3 V). The operating range starts at an input voltage of only 3 V (extended operating range). This makes the TLS835B2ELV suitable for automotive systems that need to operate during cranking condition. The device can be switched on and off by the enable feature. Data Sheet www.infineon.com/OPTIREG-Linear 1 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator The output voltage of the TLS835B2ELV can be adjusted and set between 1.5 V and 6 V by connecting an external voltage divider. Internal protection features such as output current limitation and overtemperature shutdown, protect the device from immediate damage caused by failures such as output shorted to GND, overcurrent or overtemperature conditions. External components An input capacitor CI is recommended to compensate for line influences. The output capacitor CQ is necessary for the stability of the regulating circuit. The TLS835B2ELV is designed to be stable with low ESR ceramic capacitors. Type Package Marking TLS835B2ELV PG-SSOP-14 835B2V Data Sheet 2 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Table of contents Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Potential applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Product validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 2.1 2.2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin assignment TLS835B2ELV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin definitions and functions TLS835B2ELV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 3.1 3.2 3.3 General product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4.1 4.2 4.3 4.4 4.5 4.6 Block description and electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Typical performance characteristics voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Typical performance characteristics current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Typical performance characteristics enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 10 13 16 17 18 19 5 5.1 5.2 5.2.1 5.2.2 5.2.3 5.3 5.4 5.5 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Selection of external components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Resistor divider R1, R2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermal considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Further application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 20 20 20 20 21 21 21 22 6 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Data Sheet 3 7 7 8 9 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block diagram 1 Block diagram I Q Current Limitation EN ADJ Enable Temperature Shutdown Bandgap Reference GND Figure 1 Data Sheet Block diagram TLS835B2ELV 4 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Pin configuration 2 Pin configuration 2.1 Pin assignment TLS835B2ELV I n.c. n.c. EN n.c. n.c. GND 14 13 12 11 10 9 8 1 2 3 4 5 6 7 Figure 2 Pin configuration TLS835B2ELV 2.2 Pin definitions and functions TLS835B2ELV Q n.c. ADJ n.c. n.c. n.c. n.c. Pin Symbol Function 1 I Input It is recommended to place a small ceramic capacitor to GND, close to the pins, to compensate for line influences 2 n. c. Not connected Leave open or connect to GND 3 n. c. Not connected Leave open or connect to GND 4 EN Enable (integrated pull-down resistor) Enable the IC with high level input signal Disable the IC with low level input signal 5 n. c. Not connected Leave open or connect to GND 6 n. c. Not connected Leave open or connect to GND 7 GND Ground 8 n. c. Not connected Leave open or connect to GND 9 n. c. Not connected Leave open or connect to GND 10 n. c. Not connected Leave open or connect to GND 11 n. c. Not connected Leave open or connect to GND Data Sheet 5 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Pin configuration Pin Symbol Function 12 ADJ Output adjustment Connect an external voltage divider to set the output voltage 13 n. c. Not connected Leave open or connect to GND 14 Q Output voltage Connect output capacitor CQ to GND close to the pin, respecting the values specified for its capacitance and ESR in “Functional range” on Page 8 Pad – Exposed pad Connect to heatsink area; Connect to GND Data Sheet 6 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator General product characteristics 3 General product characteristics 3.1 Absolute maximum ratings Table 1 Absolute maximum ratings1) Tj = -40°C to 150°C; all voltages with respect to ground (unless otherwise specified) Parameter Symbol Values Min. Typ. Max. Unit Note or Number Test Condition VI, VEN -0.3 – 45 V – P_4.1.1 VQ -0.3 – 7 V – P_4.1.2 VADJ -0.3 – 7 V – P_4.1.3 Junction temperature Tj -40 – 150 °C – P_4.1.5 Storage temperature Tstg -55 – 150 °C – P_4.1.6 ESD susceptibility to GND VESD -2 – 2 kV 2) HBM ESD susceptibility to GND VESD -750 – 750 V 3) CDM at all pins P_4.1.8 Input I, enable EN Voltage Output Q Voltage Adjust ADJ voltage Temperatures ESD absorption P_4.1.7 1) Not subject to production test, specified by design. 2) ESD susceptibility, HBM according to ANSI/ESDA/JEDEC JS001 (1.5 kΩ, 100 pF) 3) ESD susceptibility, Charged Device Model “CDM” according JEDEC JESD22-C101 Notes 1. Exceeding the absolute max ratings may cause permanent damage to the device and affects the device’s reliability. 2. Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as operation outside the normal operating range. Protection functions are not designed for continuous repetitive operation. Data Sheet 7 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator General product characteristics 3.2 Functional range Table 2 Functional range Tj = -40°C to 150°C; all voltages with respect to ground (unless otherwise specified) Parameter Symbol Values Max. Unit Note or Number Test Condition VQ,nom + Vdr – 40 V 1) – P_4.2.1 Extended input voltage range VI,ext 3.0 – 40 V 2) – P_4.2.2 Enable voltage range 0 – 40 V – Min. Input voltage range VI VEN Typ. P_4.2.3 1 – – µF 3)4) Equivalent series resistance of ESR(CQ) output capacitor – – 40 Ω 3) Junction temperature -40 – 150 °C – Capacitance of output capacitor for stability 1) 2) 3) 4) CQ Tj – – P_4.2.4 P_4.2.5 P_4.2.6 Output current is limited internally and depends on the input voltage, see electrical characteristics for more details. If VI,ext,min ≤ VI ≤ VQ,nom + Vdr, then VQ = VI - Vdr. If VI < VI,ext,min, then VQ can drop to 0 V. Not subject to production test, specified by design. The minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30% Note: Data Sheet Within the functional or operating range, the IC operates as described in the circuit description. The electrical characteristics are specified within the conditions given in the electrical characteristics table. 8 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator General product characteristics 3.3 Thermal resistance Note: This thermal data was generated in accordance with JEDEC JESD51 standards. For more information, go to www.jedec.org. Table 3 Thermal resistance of TLS835B2ELV in PG-SSOP-14 package Parameter Junction to case Junction to ambient Symbol RthJC RthJA Values Min. Typ. Max. – 10 – – 41 – Unit Note or Test Condition Number K/W 1) P_4.3.1 K/W 1)2) 2s2p board P_4.3.2 1)3) – Junction to ambient RthJA – 125 – K/W 1s0p board, footprint only P_4.3.3 Junction to ambient RthJA – 59 – K/W 1)3) 1s0p board, 300 mm2 heatsink area on PCB P_4.3.4 Junction to ambient RthJA – 51 – K/W 1)3) P_4.3.5 1s0p board, 600 mm2 heatsink area on PCB 1) Not subject to production test, specified by design 2) Specified RthJA value is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board. The product (chip + package) was simulated on a 76.2 × 114.3 × 1.5 mm³ board with 2 inner copper layers (2 × 70 µm Cu, 2 × 35 µm Cu). Where applicable a thermal via array under the exposed pad contacted the first inner copper layer. 3) Specified RthJA value is according to JEDEC JESD 51-3 at natural convection on FR4 1s0p board. The product (chip + package) was simulated on a 76.2 × 114.3 × 1.5 mm3 board with 1 copper layer (1 × 70 µm Cu). Data Sheet 9 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block description and electrical characteristics 4 Block description and electrical characteristics 4.1 Voltage regulation The output voltage VQ is divided by a resistor network. This fractional voltage is compared to an internal voltage reference and the pass transistor is driven accordingly. The control loop stability depends on the following factors: • output capacitor CQ • load current • chip temperature • internal circuit design Output capacitor To ensure stable operation, the capacitance of the output capacitor and its equivalent series resistor (ESR) requirements as specified in “Functional range” on Page 8 must be maintained. The output capacitor must be sized according to the requirements of the application to be able to buffer load steps. Input capacitors, reverse polarity protection diode An input capacitor CI is recommended to compensate for line influences. In order to block influences such as pulses and high frequency distortion at the input, an additional reverse polarity protection diode and a combination of several capacitors for filtering should be used. Connect the capacitors close to the component’s terminals. Smooth ramp-up In order to prevent overshoots during startup, a smooth ramp-up function is implemented. This ensures almost no output voltage overshoots during startup, mostly independent from load and output capacitance. Output current limitation If the load current exceeds the specified limit, due to a short-circuit for example, then the output current is limited and the output voltage decreases. Overtemperature shutdown The overtemperature shutdown circuit prevents the IC from immediate destruction in case of a fault condition (for example a permanent short-circuit at the output) by switching off the power stage. After the IC has cooled down, the regulator restarts. This leads to an oscillatory behavior of the output voltage until the fault is removed. However, any junction temperature above 150°C is outside the maximum ratings and therefore significantly reduces the lifetime of the IC. Data Sheet 10 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block description and electrical characteristics II Supply I Q Regulated Output Voltage IQ Current Limitation R1 EN CQ ADJ CI1 Enable CI2 VI VQ Bandgap Reference Temperature Shutdown R2 RLOAD ESR GND Figure 3 Voltage regulation V VQ,nom VI,ext,min Figure 4 Data Sheet VI Vdr VQ t Output voltage vs. input voltage 11 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block description and electrical characteristics Table 4 Electrical characteristics voltage regulator Tj = -40°C to 150°C, VI = 13.5 V, all voltages with respect to ground (unless otherwise specified). Typical values are given at Tj = 25 °C, VI = 13.5 V. Parameter Symbol Values Unit Note or Test Condition Number Min. Typ. Max. ΔVQ -2 – 2 % 0.05 mA ≤ IQ ≤ 350 mA 3 V ≤ VI ≤ 28 V, VI ≥ VQ,nom + Vdr, R2 ≤ 250 kΩ P_5.1.33 Output voltage accuracy1) ΔVQ -2 – 2 % 0.05 mA ≤ IQ ≤ 175 mA 3 V ≤ VI ≤ 40 V, VI ≥ VQ,nom + Vdr, R2 ≤ 250 kΩ P_5.1.34 Reference voltage Vref 1.47 1.5 1.53 V – P_5.1.36 Output voltage adjustable range VQ,Range 1.5 – 6 V – P_5.1.37 Dropout voltage Vdr = VI - VQ Vdr – 100 200 mV 2) IQ = 100 mA, VQ,nom = 6 V P_5.1.43 Dropout voltage Vdr = VI - VQ Vdr – 250 500 mV 2) IQ = 250 mA, VQ,nom = 6 V P_5.1.41 Power supply ripple rejection3) PSRR – 65 – dB VQ = 1.5 V, fripple = 100 Hz, Vripple = 0.5 Vp-p, IQ = 10 mA P_5.1.44 Output current limitation IQ,max 351 500 780 mA 0 V < VQ < VQ,nom - 0.1 V P_5.1.47 Load regulation steady-state ΔVQ,load -15 -5 – mV IQ = 0.05 mA to 350 mA VI = 7 V P_5.1.52 Line regulation steady-state ΔVQ,line – 1 10 mV VI = 8 V to 32 V IQ = 5 mA P_5.1.53 Overtemperature shutdown Tj,sd threshold 151 175 200 °C 3) P_5.1.55 Overtemperature shutdown Tj,sdh threshold hysteresis – 15 – K 3) P_5.1.56 1) Output voltage accuracy Tj increasing Tj decreasing 1) Referring to the device tolerance only, the tolerance of the resistor divider can cause additional deviation. Parameter is tested with the ADJ pin directly connected to the output pin Q. 2) Measured when the output voltage VQ has dropped by 100 mV while input voltage was gradually decreased. 3) Not subject to production test, specified by design Data Sheet 12 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block description and electrical characteristics 4.2 Typical performance characteristics voltage regulator Output voltage VQ versus junction temperature Tj Output voltage VQ versus junction temperature Tj 1.6 6.2 1.58 6.15 1.56 1.54 6.1 VQ [V] VQ [V] 1.52 1.5 6.05 1.48 6 1.46 VI = 13.5 V IQ = 100 mA VQ,nom = 1.5 V 1.44 VI = 13.5 V IQ = 100 mA VQ,nom = 6 V 5.95 1.42 1.4 −40 0 50 Tj [°C] 100 5.9 −40 150 Output voltage VQ versus input voltage VI 0 50 Tj [°C] 100 150 Output voltage VQ versus input voltage VI 3 7 Tj = −40 °C Tj = −40 °C Tj = 25 °C Tj = 25 °C 6 Tj = 150 °C 2.5 Tj = 150 °C 5 2 VQ [V] VQ [V] 4 1.5 3 IQ = 100 mA VQ,nom = 1.5 V 1 2 0.5 0 IQ = 100 mA VQ,nom = 6 V 1 0 1 2 3 4 5 6 0 7 VI [V] Data Sheet 0 2 4 6 8 10 VI [V] 13 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block description and electrical characteristics Dropout voltage Vdr versus junction temperature Tj Dropout voltage Vdr versus output current IQ 600 600 Tj = −40 °C IQ = 100 mA Tj = 25 °C IQ = 250 mA 500 VQ,nom = 6 V 300 300 200 200 100 100 0 VQ,nom = 6 V 400 Vdr [mV] 400 Vdr [mV] Tj = 150 °C 500 0 50 Tj [°C] 100 0 150 Power supply ripple rejection PSRR versus ripple frequency f 0 50 100 150 IQ [mA] 200 250 Maximum output current IQ versus input voltage VI 100 700 90 600 80 500 70 IQmax [mA] PSRR [dB] 60 50 40 30 20 10 IQ = 10 mA CQ = 1 μF VI = 13.5 V Vripple = 0.5 Vpp VQ,nom = 1.5 V Tj = 25 °C 400 300 200 Tj = −40 °C 100 Tj = 25 °C VQ,forced = 0 V 0 −2 10 Data Sheet −1 10 0 10 1 10 2 10 f [Hz] 3 10 4 10 5 10 0 6 10 14 0 10 20 VI [V] Tj = 150 °C 30 40 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block description and electrical characteristics Load regulation ΔVQ,load versus output current change IQ Line regulation ΔVQ,line versus input voltage VI 10 Tj = −40 °C 2 Tj = 25 °C Tj = 150 °C Tj = −40 °C VI = 7 V CQ = 1 μF 8 IQ = 5 mA Tj = 25 °C Tj = 150 °C 6 0 −2 ΔVQ,line [mV] ΔVQ,load [mV] 4 −4 2 0 −2 −4 −6 −6 −8 −8 0 50 100 150 200 IQ [mA] 250 300 −10 350 10 15 20 25 VI [V] 30 35 40 Equivalent series resistance of output capacitor ESR(CQ) versus output current IQ 3 10 Unstable Region 2 ESR(CQ) [Ω] 10 1 10 Stable Region 0 10 CQ = 1 μF −40°C ≤ T ≤ 150°C −1 10 0 Data Sheet 50 100 150 200 IQ [mA] 250 300 350 15 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block description and electrical characteristics 4.3 Table 5 Current consumption Electrical characteristics current consumption Tj = -40°C to 150°C, VI = 13.5 V (unless otherwise specified) Typical values are given at Tj = 25°C Parameter Symbol Values Unit Note or Test Condition Number Min. Typ. Max. Current consumption Iq = II Iq,off – – 1 µA VEN = 0 V; Tj < 105°C P_5.3.1 Current consumption Iq = II Iq,off – – 2 µA VEN = 0.4 V; Tj < 125°C P_5.3.3 Current consumption Iq = II - IQ Iq – 17 25 µA IQ = 0.05 mATj Tj = 25°C P_5.3.4 Current consumption Iq = II - IQ Iq – 20 30 µA IQ = 0.05 mA Tj < 125°C P_5.3.5 Current consumption Iq = II - IQ Iq – 22 33 µA 1) P_5.3.6 IQ = 350 mA Tj < 125°C 1) Not subject to production test, specified by design Data Sheet 16 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block description and electrical characteristics 4.4 Typical performance characteristics current consumption Current consumption Iq versus output current IQ Current consumption Iq versus input voltage VI 30 60 Tj = −40 °C 50 20 40 Iq [μA] Iq [μA] Tj = 25 °C 25 15 10 Tj = 150 °C 30 20 Tj = −40 °C 5 10 Tj = 25 °C VI = 13.5 V Tj = 125 °C 0 0 50 100 150 200 IQ [mA] 250 300 0 350 10 15 20 25 VI [V] 30 35 40 Current consumption Iq versus junction temperature Tj 40 35 30 Iq [μA] 25 20 15 10 5 VI = 13.5 V IQ = 50 μA 0 −40 Data Sheet 0 50 Tj [°C] 100 150 17 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block description and electrical characteristics 4.5 Enable The TLS835B2ELV can be switched on and off by the enable feature. Applying a “high” level as specified below with VEN ≥ 2 V to the EN pin enables the device. Applying a “low” level as specified below withVEN ≤ 0.8 V shuts down the device. The enable feature has a built-in hysteresis to avoid toggling between the ON/OFF state, when a signal with slow slope is applied to the EN pin. Table 6 Electrical characteristics enable Tj = -40°C to 150°C, VI = 13.5 V, all voltages with respect to ground (unless otherwise specified) Typical values are given at Tj = 25°C Parameter Symbol Values Min. Typ. Max. Unit Note or Test Condition Number Enable “high” input voltage VEN,H 2 – – V – P_5.5.1 Enable “low” input voltage VEN,L – – 0.8 V – P_5.5.2 Enable threshold hysteresis VEN,Hy 90 – – mV – P_5.5.3 Enable “high” input current IEN,H – – 1 µA VEN = 5 V P_5.5.4 Enable “high” input current IEN,H – – 6 µA VEN ≤ 18 V P_5.5.5 Enable internal pull-down resistor REN 2.8 10 20 MΩ – P_5.5.6 Data Sheet 18 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Block description and electrical characteristics 4.6 Typical performance characteristics enable Output voltage VQ versus time t (EN switched on) Output voltage VQ versus time t (EN switched on) 7 9 VQ for Tj =−40 °C VQ for Tj =−40 °C VQ for Tj = 25 °C 6 VQ for Tj = 25 °C 8 VQ for Tj = 150 °C VQ for Tj = 150 °C 7 VEN VEN 5 6 4 V [V] V [V] 5 4 3 3 2 1 0 2 VI = 13.5 V IQ = 100 mA VQ,nom = 1.5 V 0 VI = 13.5 V IQ = 100 mA VQ,nom = 6 V 1 0.5 1 0 1.5 t [ms] 0 0.5 1 t [ms] 1.5 Enable input current IEN versus enable input voltage VEN 20 Tj =−40 °C 18 Tj = 25 °C Tj = 150 °C 16 14 IEN [μA] 12 10 8 6 4 2 0 0 Data Sheet 10 20 VEN [V] 30 40 19 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Application information 5 Application information 5.1 Application diagram Note: The following information is given as a hint for the implementation of the device only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. II Supply I Q DI1 Current Limitation Regulated Output Voltage IQ R1 EN CQ ADJ DI2 < 45V CI1 10 μF 1 μF Enable CI2 VI 100 nF Bandgap Reference Temperature Shutdown VQ R2 RLOAD ESR GND e.g. Ignition Figure 5 Application diagram Note: This is a very simplified example of an application circuit. The function must be verified in the real application. 5.2 Selection of external components 5.2.1 Input pin Figure 5 shows an example of the input circuitry for a linear voltage regulator. A ceramic capacitor at the input, in the range of 100 nF to 470 nF, is recommended to filter out the high frequency disturbances imposed by the line, for example ISO pulses 3a/b. This capacitor must be placed very close to the input pin of the linear voltage regulator on the PCB. An aluminum electrolytic capacitor in the range of 10 µF to 470 µF is recommended as an input buffer to smooth out high energy pulses, such as ISO pulses 2a. This capacitor must be placed close to the input pin of the linear voltage regulator. An overvoltage suppressor diode can be used to further suppress any high voltage beyond the maximum rating of the linear voltage regulator and to protect the device from damage due to overvoltage. The external components at the input pin are optional, but they are recommended to deal with possible external disturbances. 5.2.2 Output pin An output capacitor is mandatory for the stability of linear voltage regulators. Furthermore it serves as an energy buffer during load jumps, to compensate and maintain a constant output voltage potential. It must be dimensioned according to the specific requirements of the application. The requirements for the output capacitor are given in “Functional range” on Page 8. Data Sheet 20 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Application information TLS835B2ELV is designed to also be stable with low ESR capacitors. According to the automotive requirements, ceramic capacitors with X5R or X7R dielectrics are recommended. The output capacitor should be placed as close as possible to the voltage regulator’s output pin and GND pin and on the same side of the PCB as the regulator itself. In case of input voltage or load current transients, the capacitance should be dimensioned accordingly. The configuration has to be verified in the real application to ensure that the output stability requirements are fulfilled. 5.2.3 Resistor divider R1, R2 The resistor divider can be calculated according to Equation (5.1): R1 VQ = −1 R2 VADJ (5.1) with • VQ: output voltage • VADJ: Vref, reference voltage 5.3 Thermal considerations From the known input voltage, the output voltage and the load profile of the application, the total power dissipation can be calculated as follows: PD = (VI − VQ )IQ + VI Iq (5.2) with • PD: continuous power dissipation • VI: input voltage • VQ: output voltage • IQ: output current • Iq: quiescent current The maximum acceptable thermal resistance RthJA is given by: RthJA = Tj,max − Ta PD (5.3) with • Tj,max: maximum allowed junction temperature • Ta: ambient temperature Based on the above calculation the proper PCB type and the necessary heat sink area can be determined by referencing the specification for “Thermal resistance” on Page 9. 5.4 Reverse polarity protection TLS835B2ELV is not protected against reverse polarity faults and must be protected by external components against negative supply voltage. An external reverse polarity diode is necessary. The absolute maximum ratings of the device as specified in “Absolute maximum ratings” on Page 7 must be maintained. Data Sheet 21 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Application information 5.5 Further application information For further information you may contact https://www.infineon.com/ Data Sheet 22 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Package information 6 Package information 0.15 M C A-B D 14x 0.64 ±0.25 1 8 1 7 0.2 M D 8x Bottom View 3 ±0.2 A 14 6 ±0.2 D Exposed Diepad B 0.1 C A-B 2x 14 7 8 2.65 ±0.2 0.25 ±0.05 2) 0.08 C 8˚ MAX. C 0.65 0.1 C D 0.19 +0.06 1.7 MAX. Stand Off (1.45) 0 ... 0.1 0.35 x 45˚ 3.9 ±0.11) 4.9 ±0.11) Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Does not include dambar protrusion Figure 6 PG-SSOP-141) Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e. Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). Further information on packages https://www.infineon.com/packages 1) Dimensions in mm Data Sheet 23 Rev. 1.1 2018-09-17 OPTIREG™ Linear TLS835B2ELV Low Dropout Linear Voltage Regulator Revision history 7 Revision history Revision Date Changes 1.1 2018-09-17 Editorial changes Updated T to Tj in graph of “Equivalent series resistance of output capacitor ESR(CQ) versus output current IQ” Added footnote to overtemperature shutdown specification Added VQ and removed VI in the test condition of the dropout voltage in electrical characteristics 1.0 2018-03-02 Initial Version Data Sheet 24 Rev. 1.1 2018-09-17 Trademarks All referenced product or service names and trademarks are the property of their respective owners. Edition 2018-09-17 Published by Infineon Technologies AG 81726 Munich, Germany © 2018 Infineon Technologies AG. All Rights Reserved. Do you have a question about any aspect of this document? Email: erratum@infineon.com Document reference Z8F61183983 IMPORTANT NOTICE The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics ("Beschaffenheitsgarantie"). With respect to any examples, hints or any typical values stated herein and/or any information regarding the application of the product, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation warranties of non-infringement of intellectual property rights of any third party. In addition, any information given in this document is subject to customer's compliance with its obligations stated in this document and any applicable legal requirements, norms and standards concerning customer's products and any use of the product of Infineon Technologies in customer's applications. The data contained in this document is exclusively intended for technically trained staff. It is the responsibility of customer's technical departments to evaluate the suitability of the product for the intended application and the completeness of the product information given in this document with respect to such application. For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). WARNINGS Due to technical requirements products may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies office. Except as otherwise explicitly approved by Infineon Technologies in a written document signed by authorized representatives of Infineon Technologies, Infineon Technologies’ products may not be used in any applications where a failure of the product or any consequences of the use thereof can reasonably be expected to result in personal injury.