TCN4040

TCN4040 TELCOM | Alldatasheet

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Technical content

FEATURES

n Output Capacitor Not Required n Handles Capacitive Loads n Fixed Reverse Breakdown Voltage of 2.5V n Low Output Noise n Wide Operating Current Range (60µA to 15mA) n – 40°C to + 85°C Operating Temperature Range

APPLICATIONS

n Portable, Battery-Powered Equipment n Data Acquisition Systems n Instrumentation n Process Control n Energy Management n Product Testing n Automotive n Precision Audio Components PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE TelCom Semiconductor reserves the right to make changes in the circuitry and specifications to its devices. GENERAL DESCRIPTION For applications in tight quarters, the TCN4040 preci- sion voltage reference is available in a space-saving 3mm x 1.3mm SOT-23B-3 surface mount package. The TCN4040 eliminates the need for an external stabilizing capacitor while maintaining stability with any capacitive load. The minimum operating current is 60µA. The maxi- mum operating current is 15mA. To ensure that the prime parts have an accuracy of better than ±0.5% (C grade) at 25°C, the TCN4040 uses fuse and zener-zap reverse breakdown voltage trim during wafer sort. Low dynamic impedance and bandgap reference temperature drift curvature correction maintain stable re- verse breakdown voltage accuracy over a wide range of operating temperatures (– 40°C to + 85°C) and currents from (60µA to 15mA). The TCN4040 also is available in both adjustable and 1.2V versions.

ORDERING INFORMATION

Part No. Voltage (V) Package Temp. Coefficient Grade TCN4040C-2.5ENB 2.5 SOT-23B-3* ±0.5%, 100ppm/°C Max (C Grade) TCN4040C-2.5EOA 2.5 8-Pin SOIC ±0.5%, 100ppm/°C Max (C Grade) TCN4040C-2.5EZB 2.5 TO-92 ±0.5%, 100ppm/°C Max (C Grade) TCN4040D-2.5EOA 2.5 8-Pin SOIC ±1.0%, 150ppm/°C Max (D Grade) TCN4040D-2.5ENB 2.5 SOT-23B-3* ±1.0%, 150ppm/°C Max (D Grade) TCN4040D-2.5EZB 2.5 TO-92 ±1.0%, 150ppm/°C Max (D Grade) TCN4040E-2.5ENB 2.5 SOT-23B-3* ±2.0%, 150ppm/°C Max (E Grade) TCN4040E-2.5EZB 2.5 TO-92 ±2.0%, 150ppm/°C Max (E Grade) NOTE: *SOT-23B-3 is equivalent to the JEDEC (TO-236) NOTE: *SOT-23B-3 is equivalent to the JEDEC (TO-236) PIN CONFIGURATION 2 3 NC NC TCN4040ENB TCN4040EZB 123 TCN4040EOA NC NC NC NC NC NC SOT-23B-3* (TOP VIEW) TO-92-3 8-Pin SOIC

ELECTRICAL CHARACTERISTICS: Boldface type specifications apply for TA = TJ = TMIN to TMAX . All other specifica- tions; TA = TJ = 25°C. TCN4040CEOA TCN4040DEOA TCN4040EENB TCN4040CENB TCN4040DENB TCN4040EEZB TCN4040CEZB TCN4040DEZB Symbol Parameter Test Min Typ Max Min Typ Max Min Typ Max Unit Conditions VR Reverse Breakdown IR =100µA — 2.500 — — 2.500 — — 2.500 — V Voltage Notes 4, 5 Reverse Breakdown IR =100µA— ±12 — ±25 — — ±50 mV Voltage Tolerance Notes 4, 5, 6 — ±29 — ±49 — ±74 IR MIN Minimum Operating Notes 4, 5 — 45 60 — 45 65 — 45 65 µA Current — 65 — 70 — 70 ΔVR /ΔT Average Reverse I R =10mA — ±20 ±100 — ±20 ±150 — ±20 ±150 ppm/°C Breakdown Voltage IR =1mA ±15 ±15 ±15 Temperature I R =100µA ±15 ±15 ±15 Coefficient Notes 4, 5 Voltage Change with Notes 4, 5 — 1.0 — 1.2 — 1.2 Operating Current Change Impedance I AC = 0.1 IR Notes 4, 5 ABSOLUTE MAXIMUM RATINGS* (Note 1) Power Dissipation (T A = 25°C) (Note 2) Lead Temperature (Soldering, 10 seconds) ESD Susceptibility *Functional operation above the absolute maximum stress rating is not implied. OPERATING RATINGS (NOTES 1 AND 2) Temperature Range Reverse Current NOTES: 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 guarantee specific performance limits. For guaranteed specifications and test conditions, see Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. 2. The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX (maximum junction temperature), θJA (junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PD MAX = (TJMAX – TA) /θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the TCN4040, TJMAX = 125°C, and the typical thermal resistance (θJA), when board mounted, is 185°C/W for the M package, 326°C/W for the SOT-23B-3 package, and 180° C/W with 0.4” lead length and 170°C/W with 0.125” lead length for the TO-92-3 package. 3. The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin. The machine model is a 200pF capacitor discharged directly into each pin.

ELECTRICAL CHARACTERISTICS (Cont.): Boldface type specifications apply for TA = TJ = TMIN to TMAX . All other specifications; TA = TJ = 25°C. TCN4040CEOA TCN4040DEOA TCN4040EENB TCN4040CENB TCN4040DENB TCN4040EEZB TCN4040CEZB TCN4040DEZB Symbol Parameter Test Min Typ Max Min Typ Max Min Typ Max Unit Conditions eN Wideband Noise I R =100µA , — 3 5— —3 5— —3 5 — µVmsec 10Hz ≤ f ≤ 10kHz Notes 4, 5 ΔVR Reverse Breakdown t =1000hrs — 120 — — 120 — — 120 — ppm/ °C Voltage Long Term T = 25°C ±0.1°C Stability I R =100µA Notes 4, 5 NOTES: 4. Typicals are at TJ = 25°C and represent most likely parametric norm. 5. Limits are 100% production tested at 25°C. 6. The boldface (over-temperature) limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔVR /ΔT)(65°C)(VR )]. ΔVR /ΔT is the VR temperature coefficient, 65°C is the temperature range from – 40°C to the reference point of 25°C, and VR is the reverse breakdown voltage. The total over-temperature tolerance for the different grades is shown below: C-grade: ±1.15% = ±0.5% ±100ppm/°C x 65°C D-grade: ±1.98% = ±1.0% ±150ppm/°C x 65°C E-grade: ±2.98% = ±2.0% ±150ppm/°C x 65°C PIN DESCRIPTION Pin No. Pin No. Pin No. (SOT-23B-3) TO-92 8-Pin SOIC Symbol Description 1 1 1 NC No connection

2 NC No connection

3 NC No connection

3 3 – Negative terminal 4 – Negative terminal

5 NC No connection

6 NC No connection

7 NC No connection

Available in a space saving SOT-23B-3 surface mount package, the TCN4040 is a precision micro-power curva- ture-corrected bandgap shunt voltage reference. The TCN4040 is designed for stable operation without an exter- nal capacitor connected between the “+” pin and the “–” pin. The TCN4040 also remains stable, however, if a bypass capacitor is used. The minimum operating current increase is 60mA and the maximum operating current is 15mA. The TCN4040, in the SOT-23B-3 package has a para- sitic Schottky diode between pin 3 (–) and pin 1. (Die attach interface contact). Therefore, pin 1 of the SOT-23B-3 pack- age must be left floating or connected to pin 3. In a conventional shunt regulator application, an exter- nal series resistor (R S) is connected between the supply voltage and the TCN4040 (Figure 1). RS determines the current that flows through the load (IL) and the TCN4040 (IQ ). Even when the supply voltage is at its minimum, and the load current is at its maximum value, RS should be small enough to supply at least the minimum acceptable IQ to the TCN4040 since load current and supply voltage may vary. Conversely, when the supply voltage is at its maximum and I L is at its minimum, RS should be large enough that the current flowing through the TCN4040 is less than 15mA. Figure 1. Shunt Regulator R S IL IQ + IL IQ VR VS TCN4040 R S is determined by the supply voltage, (VS), the load and operating current, (IL and IQ ), and the TCN4040’s reverse breakdown voltage, VR . VS – VR RS = IL + IQ

n Output Capacitor Not Required n Handles Capacitive Loads n Adjutable Voltage and Fixed Reverse Breakdown Voltage of 1.2V n Low Output Noise n Wide Operating Current Range (60µA to 15mA) n – 40°C to + 85°C Operating Temperature Range n Portable, Battery-Powered Equipment n Data Acquisition Systems n Instrumentation n Process Control n Energy Management n Product Testing n Automotive n Precision Audio Components PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE TelCom Semiconductor reserves the right to make changes in the circuitry and specifications to its devices. GENERAL DESCRIPTION For applications in tight quarters, the TCN4041 preci- sion voltage reference is available in a space-saving 3mm x 1.3mm SOT-23B-3 surface mount package. The TCN4041 eliminates the need for an external stabilizing capacitor while maintaining stability with any capacitive load. The minimum operating current is for both the TCN4041- 1.2V and the TCN4041-ADJ. Both versions have a maxi- mum operating current of 12mA. To ensure that the prime parts have an accuracy of better than ±0.5% (C grade) at 25°C, the TCN4041 uses fuse and zener-zap reverse breakdown voltage trim during wafer sort. Low dynamic impedance and bandgap reference temperature drift curvature correction maintain stable re- verse breakdown voltage accuracy over a wide range of operating temperatures (– 40°C to + 85°C) and currents from (60µA to 12mA). The TCN4041 is available in small SOT-23, TO-92, and SO-8 packages. Part No. Voltage (V) Package Temp. Coefficient Grade TCN4041C-1.2ENB 1.2 SOT-23B-3* ±0.5%, 100ppm/°C Max (C Grade) TCN4041C-ADJENB ADJ SOT-23B-3* ±0.5%, 100ppm/°C Max (C Grade) TCN4041C-1.2EOA 1.2 8-Pin SOIC ±0.5%, 100ppm/°C Max (C Grade) TCN4041C-ADJEOA ADJ 8-Pin SOIC ±0.5%, 100ppm/°C Max (C Grade) TCN4041C-1.2EZB 1.2 TO-92 ±0.5%, 100ppm/°C Max (C Grade) TCN4041C-ADJEZB ADJ TO-92 ±0.5%, 100ppm/°C Max (C Grade) TCN4041D-2.5EOA 2.5 8-Pin SOIC ±1.0%, 150ppm/°C Max (D Grade) TCN4041D-4.1EOA 4.1 8-Pin SOIC ±1.0%, 150ppm/°C Max (D Grade) TCN4041D-1.2ENB 1.2 SOT-23B-3* ±1.0%, 150ppm/°C Max (D Grade) TCN4041D-ADJENB ADJ SOT-23B-3* ±1.0%, 150ppm/°C Max (D Grade) TCN4041D-1.2EZB 1.2 TO-92 ±1.0%, 150ppm/°C Max (D Grade TCN4041D-ADJEZB ADJ TO-92 ±1.0%, 150ppm/°C Max (D Grade) TCN4041E-1.2ENB 1.2 SOT-23B-3* ±2.0%, 150ppm/°C Max (E Grade) TCN4041E-1.2EZB 1.2 TO-92 ±2.0%, 150ppm/°C Max (E Grade) NOTE: *SOT-23B-3 is equivalent to the JEDEC (TO-236)

ABSOLUTE MAXIMUM RATINGS* (Note 1) Power Dissipation (TA = 25°C) (Note 2) Lead Temperature (Soldering, 10 seconds) ESD Susceptibility *Functional operation above the absolute maximum stress rating is not implied. OPERATING RATINGS (NOTES 1 AND 2) Temperature Range Reverse Current Output Voltage Range NOTES: 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 guarantee specific performance limits. For guaranteed specifications and test conditions, see Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. 2. The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX (maximum junction temperature), θJA (junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PD MAX = (TJMAX – TA) /θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the TCN4041, TJMAX = 125°C, and the typical thermal resistance (θJA), when board mounted, is 185°C/W for the M package, 326°C/W for the SOT-23B-3 package, and 180° C/W with 0.4” lead length and 170°C/W with 0.125” lead length for the TO-92-3 package. 3. The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin. The machine model is a 200pF capacitor discharged directly into each pin. ELECTRICAL CHARACTERISTICS: Boldface type specifications apply for TA = TJ = TMIN to TMAX . All other specifica- tions; TA = TJ = 25°C. All other specifications; TA = TJ = 25°C. The grades C, D, and E designate initial Reverse Breakdown Voltage tolerances of ±0.5%, ±1.0%, and ±2.0%, respectively. TCN4041CEOA TCN4041DEOA TCN4041EENB TCN4041CENB TCN4041DENB TCN4041EEZB TCN4041CEZB TCN4041DEZB Symbol Parameter Test Min Typ Max Min Typ Max Min Typ Max Unit Conditions VR Reverse Breakdown IR =100µA — 1.225 — — 2.500 — — 2.500 — V Voltage Notes 4, 5 Reverse Breakdown IR =100µA— ±6— ±12 — — ±25 mV Voltage Tolerance Notes 4, 5, 6 — ±14 — ±24 — ±36 IR MIN Minimum Operating Notes 4, 5 — 45 60 — 45 65 — 45 65 µA Current — 65 — 70 — 70 ΔVR /ΔT Average Reverse I R =10mA — ±20 ±100 — ±20 ±160 — ±20 ±150 ppm/°C Breakdown Voltage IR =1mA ±15 ±15 ±15 Temperature I R =100µA ±15 ±15 ±15 Coefficient Notes 4, 5 Voltage Change with Notes 4, 5 — 2.0 — 2.5 — 2.5 Operating Current Change Impedance I AC = 0.1 IR Notes 4, 5

ELECTRICAL CHARACTERISTICS (Cont.): Boldface type specifications apply for TA = TJ = TMIN to TMAX . All other specifications; TA = TJ = 25°C. The grades C, D, and E designate initial Reverse Breakdown Voltage tolerances of ±0.5%, ±1.0%, and ±2.0%, respectively. TCN4041CEOA TCN4041DEOA TCN4041EENB TCN4041CENB TCN4041DENB TCN4041EEZB TCN4041CEZB TCN4041DEZB Symbol Parameter Test Min Typ Max Min Typ Max Min Typ Max Unit Conditions eN Wideband Noise I R =100µA , — 2 0— —2 0— —2 0 — µVmsec 10Hz ≤ f ≤ 10kHz Notes 4, 5 ΔVR Reverse Breakdown t =1000hrs — 120 — — 120 — — 120 — ppm/ °C Voltage Long Term T = 25°C ±0.1°C Stability I R =100µA Notes 4, 5 NOTES: 4. Typicals are at TJ = 25°C and represent most likely parametric norm. 5. Limits are 100% production tested at 25°C. 6. The boldface (over-temperature) limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ±[(ΔVR /ΔT)(65°C)(VR )]. ΔVR /ΔT is the VR temperature coefficient, 65°C is the temperature range from – 40°C to the reference point of 25°C, and VR is the reverse breakdown voltage. The total over-temperature tolerance for the different grades is shown below: C-grade: ±1.15% = ±0.5% ±100ppm/°C x 65°C D-grade: ±1.98% = ±1.0% ±150ppm/°C x 65°C E-grade: ±2.98% = ±2.0% ±150ppm/°C x 65°C 7. When VOUT ≤ 1.6V, the TCN4041-ADJ in the SOT-23B package must operate at reduced IR. This is caused by the series resistance of the die attach between the die (-) output and the package (-) output pin. See the Output Saturation (SOT23-B only) curve in the Typical Characteristics section. 8. Reference voltage and temperature coefficient will change with output voltage. See Typical Characteristics curves. NOTE: *SOT-23B-3 is equivalent to the JEDEC (TO-236) PIN CONFIGURATION 2 3 NC NC TCN4041ENB-1.2V 2 3 NC + – TCN4041ENB-ADJ TCN4041EZB-1.2V 123 1 TCN4041EOA-1.2V TCN4041EOA-ADJ NC NC NC NC NC NC SOT-23B-3* (TOP VIEW) TO-92-3 8-Pin SOIC NC NC NC NC NC NC TCN4041-ADJ 123

Output voltage on the TCN4041-ADJ can be adjusted to any value between 1.24V and 10V. It is a function of the internal reference voltage (V REF ) and the ratio of the external feedback resistors (see Figure 2). The output can be found with the equation (where V OUT is the desired output voltage): VOUT = VREF (R2/R1 + 1) Equation 1. The value of the internal VREF is a function of VO . The “corrected” VREF can be determined by (where VO is the desired output voltage): VREF’ = VOUT ΔVREF /ΔVOUT ) +VY Equation 2. ΔVREF /ΔVOUT is typically -1.3mV/V, and VY = 1.240V. Replace the value of VREF’ in Equation 1 with the value determined using Equation 2. The actual output voltage can deviate from that pre- dicted by the typical ΔVREF /ΔVO in Equation 2. The worst case ΔVREF /ΔVOUT for C-grade parts is – 2.5mV/V and VY = 1.246V; for D-grade, the worst case is – 3.0mV/V and VY = 1.248V. The difference in output voltage resulting from typical worst case values are shown in the following example: Let V O = +9V. Using the typical value of ΔVREF /ΔVOUT , VREF is 1.228; choosing a value of R1 = 10kΩ , R2 = 63.272kW. The output voltage, when using worst case ΔVREF /ΔVOUT for C-grade and D-grade parts, is 8.965V and 8.946V, respec- tively. This could result in errors as large as 0.39% for C-grade, and 0.59% for D-grade parts. However, resistor values resulting from the typical value of ΔV REF /ΔVOUT will work most of the time, requiring no additional adjustments. APPLICATIONS INFORMATION Available in space-saving SOT-23B-3 surface mount packages, the TCN4041 is a precision micro-power curvature-corrected bandgap shunt voltage reference. It is designed for stable operation without an external capacitor connected between the “+” pin and the “-” pin. The TCN4041 also remains stable, however, if a bypass capacitor is used. The device is available in either a fixed 1.2V or an adjustable reverse breakdown voltage. The minimum operating cur- rent is 60mA, and the maximum operating current is 12mA for both options. TCN4041s in the SOT-23 package have pin 1 connected as the (-) output. (Die attach interface contact). Therefore, pin 1 of the TCN4041-1.2 must be left floating or connected to pin 3, and pin 1 on the TCN4041-ADJ is the (-) output. In a conventional shunt regulator application, an external series resistor (R S) is connected between the supply voltage and the TCN4041 (Figure 1). RS determines the current that flows through the load (IL) and the TCN4041 (IQ ). Even when the supply voltage is at its minimum, and the load current is at its maximum value, RS should be small enough to supply at least the minimum acceptable IQ to the TCN4041 since load current and supply voltage may vary. Conversely, when the supply voltage is at its maximum and I L is at its minimum, RS should be large enough that the current flowing through the TCN4041 is less than 12mA. R S is determined by the supply voltage, (VS), the load and operating current, (IL and IQ ), and the TCN4041’s reverse breakdown voltage, VR . VS - VR R S = IL + IQ PIN DESCRIPTION Pin No. Pin No. Pin No. (SOT-23B-3) TO-92 8-Pin SOIC Symbol Description 1 1 1 NC No connection 3 3 – Negative terminal 4 – Negative terminal