2.5V MICROPOWER SHUNT VOLTAGE REFERENCE 2.5V OUTPUT VOLTAGE ULTRA LOW CURRENT CONSUMPTION: 4µA TYP. HIGH PRECISION @ 25 C ±2% and ±1% HIGH STABILITY WHEN USED WITH CAPACITIVE LOAD INDUSTRIAL TEMPERATURE RANGE: -4 to +85 C 15ppm/ C MAXIMUM TEMPERATURE COEFFICIENT Z TO92 (Plastic Package) DESCRIPTION The TS44 is a low power shunt voltage reference providing a stable 2.5V output voltage over the industrial temperature range (-4 to +85 C). Available in SOT23-3 surface mount package, it can be designed in applications where space saving is a critical issue. The low operating current is a key advantage for power restricted designs. In addition, the TS44 is very stable and can be used in a broad range of application conditions. L SOT23-3L (Plastic Micropackage) PIN CONNECTIONS (top view) APPLICATION Computers Instrumentation Battery chargers Switch Mode Power Supply Battery operated equipments ORDER CODE Precision TO92 SOT23-3 SOT23 Marking 2% TS44EIZ-2.5 TS44EILT-2.5 L243 1% TS44DIZ-2.5 TS44DILT-2.5 L242 Single temperature range: -4 to +85 C Z = TO92 Plastic package - also available in Bulk (Z), Tape & Reel (ZT) and Ammo Pack (AP) LT = Tiny Package (SOT23-3) - only available in Tape & Reel (LT) March 22 1/1
ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit I k Reverse Breakdown Current 2 ma I f Forward Current 1 ma P d Power Dissipation 1) SOT23-3 TO92 T std Storage Temperature -65 to +15 C ESD Human Body Model (HBM) 2 kv Machine Model (MM) 2 V Tlead Lead Temperatue (soldering, 1 seconds) 26 C 1. Pd has been calculated with Tamb = 25 C, Tjunction =15 C andrthja = 2 C/W for the TO92 package Rthja = 34 C/W for the SOT23-3 package OPERATING CONDITIONS Symbol Parameter Value Unit I kmin Minimum Operating Current 6 µa I kmax Maximum Operating Current 15 ma T oper Operating Free Air Temperature Range -4 to +85 C 36 625 mw 2/1
ELECTRICAL CHARACTERISTICS TS44E (2% Precision) Tamb = 25 C (unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit Reverse Breakdown Voltage Ik = 1µA 2.45 2.5 2.55 V Vk Ik = 1µA -5 5 Reverse Breakdown Voltage Tolerance -74 74 mv Ikmin Minimum Operating Current T = 25 C 4 65 7 µa Vref/ T Average Temperature Coefficient Ik = 1µA 3 15 ppm/ C Vk/ Ik Rka Reverse Breakdown Voltage Change with Operating Current Range Reverse Static Impedance Ikmin < Ik < 1mA 1mA < Ik < 15mA Ik = Ikmin to 1mA Ik = 1 to 15mA.4 1 1.2 2.5 8 1.4 1 1.2.2.6.7 Kvh Long Term Stability Ik = 1µA, t = 1hrs 12 ppm En Wide Band Noise Ik = 1µA 1Hz < f < 1kHz 35 µvrms mv Ω Note: Limits are 1% production tested at 25 C. Limits over temperature are guaranteed through correlation and by design. ELECTRICAL CHARACTERISTICS TS44D (1% Precision) Tamb = 25 C (unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit Reverse Breakdown Voltage Ik = 1µA 2.475 2.5 2.525 V Vk Ik = 1µA -25 25 Reverse Breakdown Voltage Tolerance -49 49 mv Ikmin Minimum Operating Current T = 25 C 4 65 7 µa Vref/ T Average Temperature Coefficient Ik = 1µA 3 15 ppm/ C Vk/ Ik Rka Reverse Breakdown Voltage Change with Operating Current Range Reverse Static Impedance Ikmin < Ik < 1mA 1mA < Ik < 15mA Ik = Ikmin to 1mA Ik = 1mA to 15mA.4 1 1.2 2.5 8 1.4 1 1.2.2.6.7 Kvh Long Term Stability Ik = 1µA, t = 1hrs 12 ppm En Wide Band Noise Ik = 1µA 1Hz < f < 1kHz 35 µvrms mv Ω Note: Limits are 1% production tested at 25 C. Limits over temperature are guaranteed through correlation and by design. 3/1
Reference voltage versus cathode current 15 3 Minimum operating current Cathode current (ma) 1 5 Cathode voltage (V) 2.5 2 1.5 1.5 T=+25 C T=+85 C T=-4 C -5 -.5.5 1 1.5 2 2.5 Cathode voltage (V) 2 4 Cathode current (µa) 2.58 Test circuit 2.56 +2% Vin R Ik=(Vin-Vref)/R Vout=Vref Cathode voltage (V) 2.54 2.52 2.5 2.48 2.46 +1% -1% 2.44-2% 2.42-4 -2 2 4 6 8 Temperature ( C) Static impedance (Ohms) Static impedance (Rka) versus temperature.2.15.1.5 Noise voltage (nv/vhz) 15 1 5 Noise voltage versus Frequency CL=1µF CL=1µF CL=1µF CL=1nF CL= -4-2 2 4 6 8 Temperature ( C).1 1. 1. 1. Frequency (KHz) 1. 4/1
5 Pulse response for Ik=1µA Test circuit for pulse response at Ik=1µA 25k ohm Ik=1µA Pulse Generator Intput 2.5 5 1 15 2 Time (µs) Pulse response for Ik=1µA Detailed part Pulse response for Ik=1µA Detailed part 5V 5V 2.5V 2.5V.5 1 1.5 2 Time (µs) 1 2 3 4 5 Time (µs) Pulse response for Ik=1mA Test circuit for pulse response at Ik=1mA 2.5k ohm 5V Ik=1mA Pulse Generator Intput 2.5V 1 2 3 4 5 Time (µs) 5/1
Pulse response for Ik=1mA Detailed part Pulse response for Ik=1mA Detailed part 5V 5V 2.5V 2.5V 5 1 15 2 Time (ns).2.4.6.8 1 Time (µs) 6/1
PACKAGE MECHANICAL DATA 3 PINS - PLASTIC PACKAGE TO92 (TAPE & REEL) P A1 P T H L1 H1 H A d W W W1 I1 H W2 D F1 F2 P2 P Millimeters Inches Dim. Min Typ. Max. Min. Typ. Max. AL 5..197 A 5..197 T 4..157 d.45.18 I1 2.5.98 P 11.7 12.7 13.7.461.5.539 PO 12.4 12.7 13.488.5.512 P2 5.95 6.35 6.75.234.25.266 F1/F2 2.4 2.5 2.8.94.98.11 h -1 1 -.39.39 P -1 1 -.39.39 W 17.5 18. 19..689.79.748 W 5.7 6 6.3.224.236.248 W1 8.5 9 9.75.335.354.384 W2.5.2 H 2.787 H 15.5 16 16.5.61.63.65 H1 25.984 DO 3.8 4. 4.2.15.157.165 L1 11.433 7/1
PACKAGE MECHANICAL DATA 3 PINS - PLASTIC PACKAGE TO92 (TAPE AMMO PACK) A1 P P T H L1 H1 H A d W W W1 I1 H W2 D F1 F2 P2 P Millimeters Inches Dim. Min Typ. Max. Min. Typ. Max. AL 5..197 A 5..197 T 4..157 d.45.18 I1 2.5.98 P 11.7 12.7 13.7.461.5.539 PO 12.4 12.7 13.488.5.512 P2 5.95 6.35 6.75.234.25.266 F1/F2 2.4 2.5 2.8.94.98.11 h -1 1 -.39.39 P -1 1 -.39.39 W 17.5 18. 19..689.79.748 W 5.7 6 6.3.224.236.248 W1 8.5 9 9.75.335.354.384 W2.5.2 H 2.787 H 15.5 16 16.5.61.63.65 H1 25.984 DO 3.8 4. 4.2.15.157.165 L1 11.433 8/1
PACKAGE MECHANICAL DATA 3 PINS - PLASTIC PACKAGE TO92 (BULK) Millimeters Inches Dim. Min Typ. Max. Min. Typ. Max. L 1.27.5 B 3.2 3.7 4.2.126.1457.1654 O1 4.45 5. 5.2.1752.1969.247 C 4.58 5.3 5.33.183.198.298 K 12.7.5 O2.47.5.58.16.197.2 a.35.138 9/1
PACKAGE MECHANICAL DATA 3 PINS - TINY PACKAGE (SOT23) D e GAUGE PLANE.25 k b e1 A1 A2.1 C A E E1 L L1 c SEATING PLANE C Millimeters Inches Dimensions Min. Typ. Max. Min. Typ. Max. A.89 1.12.35.44 A1.1.1.4.4 A2.88.95 1.2.37.4 b.3.5.12.2 c.8.2.3.8 D 2.8 2.9 3.4.11.114.12 E 2.1 2.64.83.14 E1 1.2 1.3 1.4.47.51.55 e.95.37 e1 1.9.75 L.4.5.6.16.2.24 L1.54.21 k 8 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics 1/1 22 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States http://www.st.com - United Kingdom