ZXRE330 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES Description Pin Assignments The ZXRE330 is a low knee current 3.3V voltage reference. ZXRE330xSA (SOT23) Offering tight tolerances and sharp knee characteristics – consuming only 1µA when the 3.3V reference voltage can no longer be maintained. Cath ode 3 Excellent performance is maintained over the 1µA to 5mA 1 operating current range. The device has been designed to be highly tolerant of capacitive loads so maintaining excellent stability. * Anod e 2 It’s available in small outline SOT23 and TO92 packages This Top v iew device offers a pin for pin compatible alternative to industry standard shunt voltage reference. * Pin 1 mu st be left floating or con nected to pin 2 ZXRE330xV (TO92) + 3 Cathode + 2 * + 1 Anode (Top View) * Pin 2 must be left floating or connected to pin 1 Features Applications Small packages: SOT23 & TO92 No output capacitor required Output voltage tolerance ZXRE330E ±2% at +25°C ZXRE330A ±0.5% at +25°C Low output noise (10Hz to 10 kHz).............. 55µVRMS Wide operating current range 1µA to 5mA Extended temperature range -40°C to +85°C Low temperature coefficient 20ppm/°C (Typ) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: Battery powered equipment Precision power supplies Portable instrumentation Portable communications devices Notebook and palmtop computers Data acquisition systems Low current voltage clamps 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. ZXRE330 Document number: DS36772 Rev. 2 - 2 1 of 8 www.diodes.com January 2014 © Diodes Incorporated ZXRE330 Typical Applications Circuit Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) Parameter (Voltages to GND Unless Otherwise Stated) Rating Unit 10 mA Continuous Reverse Current Continuous Forward Current 10 mA Operating Junction Temperature -40 to +150 °C Storage Temperature -65 to +150 °C Note: 4. Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum rating, for extended periods, may reduce device reliability. Unless otherwise stated voltages specified are relative to the ANODE pin. Package Thermal Data PDIS Package θJA SOT23 415°C/W 300mW TO92 180°C/W 700mW TAMB = +25°C, TJ = +150°C Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Parameter Reverse Current Operating Ambient Temperature Range ZXRE330 Document number: DS36772 Rev. 2 - 2 Min. Max. Units 0.002 5 mA -40 +85 °C 2 of 8 www.diodes.com January 2014 © Diodes Incorporated ZXRE330 Electrical Characteristics (@TA = +25°C, unless otherwise specified.) Symbol VREF Conditions Parameter TAMB Reverse breakdown voltage IR = 100μA Reverse breakdown voltage tolerance IR = 100μA +25°C Typ. E Limits Units 3.3 — V ZXRE330A +25°C ZXRE330E ±16.5 — -40 to +85°C IROFF ∆VR/∆T ∆VR IRMIN Off state reverse current V = VREF *0.9 Average reverse breakdown voltage temperature coefficient IR = 100µA Reverse breakdown change with current ±99 0.5 — -40 to +85°C — 1 ±20 — — -40 to +85°C ±15 ±150 ppm/°C ±15 — — IR = 10µA 100uA < IR < 5mA mV +25°C IR = 5mA 2uA <IR < 100uA ±66 25°C 0.2 — -40 to +85°C — 0.6 25°C 10 — -40 to +85°C — 20 µA mV Minimal Operating Current — 1 2 µA ZR Dynamic output impedance IR = 2mA, f = 120Hz, IAC = 0.1IR 2 — Ω en Noise voltage 55 — µVRMS VR Long term stability (non cumulative) t = 1000Hrs, IR = 100µA — — ppm Thermal hysteresis ∆T = -40°C to +85°C 0.08 — % VHYST ZXRE330 Document number: DS36772 Rev. 2 - 2 IR = 100µA 10Hz < f < 10kHz 3 of 8 www.diodes.com January 2014 © Diodes Incorporated ZXRE330 Typical Characteristics 3.35 3.35 IR=100uA 3.33 3.33 3.32 3.32 3.31 3.30 3.29 3.28 3.31 3.30 3.29 3.28 3.27 3.27 3.26 3.26 3.25 -50 IR=1mA 3.34 Reverse Voltage (V) Reverse Voltage (V) 3.34 -25 0 25 50 75 100 3.25 -50 125 -25 0 o Ambient Temperature ( C) o o TA=25 C o TA=85 C Reverse Current (mA) Reverse Current (uA) 8 7 6 5 4 3 2 1 0 0.0 0.5 1.0 1.5 2.0 75 2.5 3.0 3.5 10 o 9 T =25 C A 8 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -1.0 -0.5 Reverse Voltage (V) 125 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Reverse Voltage (V) Minimal Operating Current Reverse Current vs. Reverse Voltage 0.60 5 IR=100uA VR=3V 0.55 o TA=25 C 4 0.50 Noise(V/z) off-state Reverse Current (uA) 100 Reverse Breakdown Voltage Temperature Coefficient TA=-40 C 9 50 o Reverse Breakdown Voltage Temperature Coefficient 10 25 Ambient Temperature ( C) 0.45 0.40 0.35 3 2 0.30 1 0.25 0.20 -50 -25 0 25 50 75 100 125 0 o Ambient Temperature ( C) Document number: DS36772 Rev. 2 - 2 100 1k 10k Frequency (Hz) Off-state Reverse Current vs. Temperature ZXRE330 10 Noise Voltage vs. Frequency 4 of 8 www.diodes.com January 2014 © Diodes Incorporated ZXRE330 Start Up Characteristics ZXRE330 Input Input Output Output IR=100μA, No Load Capacitor IR=5mA, No Load Capacitor Application Information In a conventional shunt regulator application (Figure 1), an external series resistor (RS) is connected between the supply voltage, VS, and the ZXRE330. RS determines the current that flows through the load (IL) and the ZXRE330 (IR). Since load current and supply voltage may vary, RS should be small enough to supply at least the minimum acceptable IR to the ZXRE330 even when the VS supply voltage is at its minimum and the load current is at its maximum value. When the supply voltage is at its maximum and IL is at its minimum, RS should be large enough so that the current flowing through the ZXRE330 is less than 10 mA. IR + RS IL IL VR IR RS is determined by the supply voltage, (VS), the load and operating current, (IL and IR), and the ZXRE330’s reverse breakdown voltage, VR. RS VS VR IL IR Printed circuit board layout considerations ZXRE330 in the SOT23 package have the die attached to pin 1, which results in an electrical contact between pin 2 and pin 3. Therefore, pin 1 of the SOT23 package must be left floating or connected to pin 2. ZXRE330 in the TO92 package have the die attached to pin 2, which results in an electrical contact between pin 2 and pin 1. Therefore, pin 2 must be left floating or connected to pin1. ZXRE330 Document number: DS36772 Rev. 2 - 2 5 of 8 www.diodes.com January 2014 © Diodes Incorporated ZXRE330 Ordering Information ZXRE330X XX - X Reference Voltage T olerance A : ±0.5% E : ±2% Part Number Package Code Packaging ZXRE330ASA-7 SA ZXRE330ESA-7 ZXRE330AV-A ZXRE330EV-A Note: Package Packing SA : SOT23 V : TO92 7 : Tape & Reel A : Ammo Box 7” Tape and Reel Ammo Box Quantity Part Number Suffix Quantity Part Number Suffix SOT23 3000/Tape & Reel -7 NA NA SA SOT23 3000/Tape & Reel -7 NA NA V TO92 NA NA 2000/Box A V TO92 NA NA 2000/Box A 5. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf Marking Information (1) SOT23 Part Number ZXRE330ASA-7 ZXRE330ESA-7 Package SOT23 SOT23 Identification Code DC DD (2) TO92 ( Top View ) Accuracy A : ±0.5% E : ±2% ZXRE330 Document number: DS36772 Rev. 2 - 2 RE330 X Y WW X X 6 of 8 www.diodes.com Y : Year : 0~9 WW : Week : 01~52; 52 represents 52 and 53 week X X : Internal Code January 2014 © Diodes Incorporated ZXRE330 Package Outline Dimensions (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. SOT23 ° 7 l l A SOT23 Dim Min Max Typ A 0.37 0.51 0.40 B 1.20 1.40 1.30 C 2.30 2.50 2.40 D 0.89 1.03 0.915 F 0.45 0.60 0.535 G 1.78 2.05 1.83 H 2.80 3.00 2.90 J 0.013 0.10 0.05 K 0.890 1.00 0.975 K1 0.903 1.10 1.025 L 0.45 0.61 0.55 L1 0.25 0.55 0.40 M 0.085 0.150 0.110 a 8° All Dimensions in mm H J K 1 K a M A 1 L L B C D TO92 A D K R A M N O I T C E J E K R A M N O I T C E J E E E 1 b TO92 2 L 3 L 1 L L Dim A A2 b c D D1 E e e2 b L Min 3.45 1.22 4.27 4.32 2.40 Max 3.66 1.37 4.78 4.83 2.90 12.98 15.00 Typ 0.38 0.38 3.87 1.27 - 2 e c 2 e e e K L U B O M M A L1 12.80 15.00 L2 0.80 L3 2.00 3.00 All Dimensions in mm 1 D 2 A ø ZXRE330 Document number: DS36772 Rev. 2 - 2 7 of 8 www.diodes.com January 2014 © Diodes Incorporated ZXRE330 Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. SOT23 Y Z C X Dimensions Value (in mm) Z 2.9 X 0.8 Y 0.9 C 2.0 E 1.35 E IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. 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Copyright © 2014, Diodes Incorporated www.diodes.com ZXRE330 Document number: DS36772 Rev. 2 - 2 8 of 8 www.diodes.com January 2014 © Diodes Incorporated