PSSI2021SAY

Important notice Dear Customer, On 7 February 2017 the former NXP Standard Product business became a new company with the tradename Nexperia. Nexperia is an industry leading supplier of Discrete, Logic and PowerMOS semiconductors with its focus on the automotive, industrial, computing, consumer and wearable application markets In data sheets and application notes which still contain NXP or Philips Semiconductors references, use the references to Nexperia, as shown below. Instead of http://www.nxp.com, http://www.philips.com/ or http://www.semiconductors.philips.com/, use http://www.nexperia.com Instead of sales.addresses@www.nxp.com or sales.addresses@www.semiconductors.philips.com, use salesaddresses@nexperia.com (email) Replace the copyright notice at the bottom of each page or elsewhere in the document, depending on the version, as shown below: - © NXP N.V. (year). All rights reserved or © Koninklijke Philips Electronics N.V. (year). All rights reserved Should be replaced with: - © Nexperia B.V. (year). All rights reserved. If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or telephone (details via salesaddresses@nexperia.com). Thank you for your cooperation and understanding, Kind regards, Team Nexperia PSSI2021SAY Constant current source in SOT353 package Rev. 03 — 27 August 2009 Product data sheet 1. Product profile 1.1 General description Resistor-equipped PNP transistor with two diodes on one chip in a SOT353 (SC-88A) plastic package. Stabilized output current of between 15 µA and 50 mA by connection of an external resistor between pins 4 and 5. 1.2 Features n n n n One chip integrated constant current source Output current setting by use of an external resistor Very small package Reduces component count and board space 1.3 Applications n n n n Automotive applications Generic constant current source Constant current LED driver Active bias control for audio amplifiers 1.4 Quick reference data Table 1. Quick reference data Symbol Parameter Min Typ Max Unit Iout output current Conditions 0.015 - 50 mA VS supply voltage - - 75 V PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package 2. Pinning information Table 2. Pinning Pin Symbol Description Simplified outline 1 n.c. not connected 2 IOUT output current 3 GND ground 4 REXT external resistor 5 VS supply voltage 5 1 2 Symbol 4 5 3 n.c. 1 4 2 3 sym049 3. Ordering information Table 3. Ordering information Type number PSSI2021SAY Package Name Description Version SC-88A plastic surface mounted package; 5 leads SOT353 4. Marking Table 4. Marking codes Type number Marking code[1] PSSI2021SAY S1* [1] * = -: made in Hong Kong * = t: made in Malaysia * = W: made in China PSSI2021SAY_3 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 03 — 27 August 2009 2 of 12 PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package 5. Limiting values Table 5. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter Conditions Min Max Unit Iout stabilized output current see Figure 2 0.015 50 mA VS supply voltage - 75 V Vout output voltage - 73 V [1] - 0.5 V [2] - 335 mW VS = 75 V reverse voltage VR Tamb ≤ 25 °C Ptot total power dissipation Tstg storage temperature −65 +150 °C Tj junction temperature - 150 °C Tamb ambient temperature −65 +150 °C [1] Between all terminals [2] Device mounted on a FR4 printed-circuit board, single-sided copper, tin-plated, standard footprint 6. Thermal characteristics Table 6. Symbol Rth(j-a) [1] Thermal characteristics Parameter Conditions thermal resistance from junction to ambient [1] in free air Min Typ Max Unit - - 370 K/W Device mounted on a FR4 printed-circuit board, single-sided copper, tin-plated, standard footprint 7. Characteristics Table 7. Characteristics Tamb = 25 °C unless otherwise specified Symbol Parameter Conditions Min Typ Max Unit Iout stabilized output current VS = 12 V; Rext = open; Vout = 0 V to 10 V; see Figure 2 10 15 20 µA IS supply current VS = 12 V; Iout = 15 µA; Vout = 0 V to 10 V; see Figure 4 - 240 370 µA VS = 75 V; Iout = 15 µA; Vout = 0 V; see Figure 4 - 1.5 2.2 mA ∆Iout / (Iout × ∆Tamb) output current change over ambient temperature VS = 12 V; Vout = 1 V; Tamb = −55 °C to 150 °C - 0.15 - %/K ∆Iout / Iout load stability of stabilized output current VS = 12 V; Vout = 1 V to 10 V - 0.5 - % Rint internal resistor value - 48 - kΩ PSSI2021SAY_3 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 03 — 27 August 2009 3 of 12 PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package 006aaa020 102 Iout (mA) Iout (mA) (1) 10 006aaa021 102 (1) (2) 10 (2) 1 (3) 1 10−1 (4) 10−1 (3) (4) (5) (5) (6) (6) 10−2 102 10 103 104 10−2 0 RL (Ω) 20 40 60 80 VS (V) VS = 12 V (1) Iout = 20 mA (1) Iout = 20 mA (2) Iout = 10 mA (2) Iout = 10 mA (3) Iout = 1mA (3) Iout = 1mA (4) Iout = 100 µA (4) Iout = 100 µA (5) Iout = 50 µA (5) Iout = 50 µA (6) Iout = 15 µA (6) Iout = 15 µA Fig 1. Output current as a function of load resistance; typical values Fig 2. 006aaa022 102 Iout (mA) Output current as a function of supply voltage; typical values 006aaa023 2.0 IS (mA) 10 1.5 1 1.0 10−1 0.5 10−2 10 102 103 104 0 106 105 Rext (Ω) 0 60 80 Rext = ∞; RL = 100 Ω Output current as a function of external resistance; typical values Fig 4. Supply current as a function of supply voltage; typical values PSSI2021SAY_3 Product data sheet 40 VS (V) VS = 12 V; RL = 100 Ω Fig 3. 20 © NXP B.V. 2009. All rights reserved. Rev. 03 — 27 August 2009 4 of 12 PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package 8. Application information External resistor calculation The output current can be set by connecting an external resistor between VS (pin 5) and REXT (pin 4). 0.617 I out = ------------- + 15 µA R ext Without an external resistor the output current will be typically 15 µA. Iout then calculates to: Typical output currents versus supply voltage VS The applied supply voltage determines the output current. Table 8 gives typical Iout values at specified supply voltages, assuming that the working output current is 70% of the maximum possible output current. Table 8. Typical output currents at specified supply voltages VS (V) Iout (mA) 5 6 12 18 24 38 36 60 PSSI2021SAY_3 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 03 — 27 August 2009 5 of 12 PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package 8.1 Typical application circuits LED driver Figure 5 shows a typical application circuit for an LED driver. The constant current ensures a constant LED brightness. VS VCC Rext REXT IOUT Iout LED GND 006aaa024 Fig 5. LED driver application diagram Switching the current ON/OFF The output can be switched ON and OFF by connecting a resistor-equipped transistor (RET, e.g. PDTC124XU) as shown in Figure 6. VS VCC Rext REXT IOUT GND Iout OUT IN/ OUT LED GND Fig 6. Switching the current ON/OFF; application diagram PSSI2021SAY_3 Product data sheet 006aaa025 © NXP B.V. 2009. All rights reserved. Rev. 03 — 27 August 2009 6 of 12 PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package Voltage reference The PSSI2021SAY supplies a constant current to the Zener diode regardless of supply voltage variation, resulting in a constant reference voltage (see Figure 7). VS VCC Rext REXT IOUT Iout Vref GND 006aaa026 Fig 7. Voltage reference application diagram PSSI2021SAY_3 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 03 — 27 August 2009 7 of 12 PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package 9. Package outline Plastic surface-mounted package; 5 leads SOT353 D E B y X A HE 5 v M A 4 Q A A1 1 2 e1 3 bp c Lp w M B e detail X 0 1 2 mm scale DIMENSIONS (mm are the original dimensions) UNIT A A1 max bp c D E (2) e e1 HE Lp Q v w y mm 1.1 0.8 0.1 0.3 0.2 0.25 0.10 2.2 1.8 1.35 1.15 1.3 0.65 2.2 2.0 0.45 0.15 0.25 0.15 0.2 0.2 0.1 OUTLINE VERSION REFERENCES IEC JEDEC SOT353 Fig 8. JEITA SC-88A EUROPEAN PROJECTION ISSUE DATE 04-11-16 06-03-16 Package outline SOT353 (SC-88A) PSSI2021SAY_3 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 03 — 27 August 2009 8 of 12 PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package 10. Packing information Table 9. Packing methods The indicated -xxx are the last three digits of the 12NC ordering code.[1] Type number Package Description Packing quantity 3000 PSSI2021SAY [1] SOT353 4 mm pitch, 8 mm tape and reel -115 For further information and the availability of packing methods, see Section 13. PSSI2021SAY_3 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 03 — 27 August 2009 9 of 12 PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package 11. Revision history Table 10. Revision history Document ID Release date Data sheet status Change notice Supersedes PSSI2021SAY_3 20090827 Product data sheet - PSSI2021SAY_2 Modifications: • This data sheet was changed to reflect the new company name NXP Semiconductors, including new legal definitions and disclaimers. No changes were made to the technical content. • • Table 2 “Pinning”: amended Figure 8 “Package outline SOT353 (SC-88A)”: updated PSSI2021SAY_2 20041020 Product data sheet - PSSI2021SAY_1 PSSI2021SAY_1 20010507 Product specification - - PSSI2021SAY_3 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 03 — 27 August 2009 10 of 12 PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package 12. Legal information 12.1 Data sheet status Document status[1][2] Product status[3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] Please consult the most recently issued document before initiating or completing a design. [2] The term ‘short data sheet’ is explained in section “Definitions”. [3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.nxp.com. 12.2 Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet — A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local NXP Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. 12.3 Disclaimers General — Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Right to make changes — NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use — NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors accepts no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer’s own risk. Applications — Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Limiting values — Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) may cause permanent damage to the device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the Characteristics sections of this document is not implied. Exposure to limiting values for extended periods may affect device reliability. Terms and conditions of sale — NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms, including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by NXP Semiconductors. In case of any inconsistency or conflict between information in this document and such terms and conditions, the latter will prevail. No offer to sell or license — Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. Quick reference data — The Quick reference data is an extract of the product data given in the Limiting values and Characteristics sections of this document, and as such is not complete, exhaustive or legally binding. 12.4 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. 13. Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com PSSI2021SAY_3 Product data sheet © NXP B.V. 2009. All rights reserved. Rev. 03 — 27 August 2009 11 of 12 PSSI2021SAY NXP Semiconductors Constant current source in SOT353 package 14. Contents 1 1.1 1.2 1.3 1.4 2 3 4 5 6 7 8 8.1 9 10 11 12 12.1 12.2 12.3 12.4 13 14 Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . 1 General description. . . . . . . . . . . . . . . . . . . . . . 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Quick reference data. . . . . . . . . . . . . . . . . . . . . 1 Pinning information . . . . . . . . . . . . . . . . . . . . . . 2 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 3 Thermal characteristics. . . . . . . . . . . . . . . . . . . 3 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Application information. . . . . . . . . . . . . . . . . . . 5 Typical application circuits . . . . . . . . . . . . . . . . 6 Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 8 Packing information. . . . . . . . . . . . . . . . . . . . . . 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 10 Legal information. . . . . . . . . . . . . . . . . . . . . . . 11 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 11 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Contact information. . . . . . . . . . . . . . . . . . . . . 11 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2009. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 27 August 2009 Document identifier: PSSI2021SAY_3