ZXRE160 DIODES | Alldatasheet
Document overview
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- PDF pages: 15
Technical content
Features
- Low reference voltage (V FB = 0.6V)
- -40°C to +125°C temperature range
- Reference voltage tolerance at +25°C
- 0.5% ZXRE160A
- 1% ZXRE160
- Typical temperature drift
- <4 mV (0°C to +70°C)
- <6 mV (-40°C to +85°C)
- 0.2V to 18V open-collector output
- High power supply rejection
- (>45dB at 300kHz)
- Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
- Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments ZXRE160_H5 (SC70/SOT353) and ZXRE160_ET5 (TSOT25) ZXRE160_FT4 (X2-DFN1520-6)
Applications
- Isolated DC-DC converters
- Core voltage POL
- Low Voltage Low-Dropout linear regulators
- Shunt regulators
- Adjustable voltage reference Notes: 1. No purposely added lead. Fully EU Directiv e 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com for more in formation 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. Top view Top view 3 4 6PGND N/C OUT FB GND IN Exposed flag floating or connect to GND Top view 3 4 6PGND N/C OUT FB GND IN Exposed flag floating or connect to GND Top view
Document number: DS35688 Rev. 2 - 2 2 of 15 www.diodes.com June 2012 © Diodes Incorporated ZXRE160 NEW PRODUCT A Product Line of Diodes Incorporated Typical Applications Circuit Pin Descriptions Pin Name Package Name Pin Number Function SC70/ SOT353, TSOT25 X2-DFN1520-6 PGND 1 1 Power Ground: Ground return for emitter of output transistor: Connect PGND and GND together. — — 2 No connection OUT 5 3 Output: Connect a capacitor close to device between OUT and GND for closed loop stability. See the Applications Information section. FB 4 4 Feedback Input. Threshold voltage 600mV nominal. GND 2 5 Analog Ground: Ground return for reference and amplifier: Connect GND and PGND together. IN 3 6 Supply Input: Connect a 0.1 μF ceramic capacitor close to the device from IN to GND. — — Flag Floating or connect to GND
Document number: DS35688 Rev. 2 - 2 3 of 15 www.diodes.com June 2012 © Diodes Incorporated ZXRE160 NEW PRODUCT A Product Line of Diodes Incorporated Functional Block Diagram The ZXRE160 differs from most other shunt regulators in that it has separate input and output pins and a low voltage reference. This enables it to regulate rails down to 600mV and makes the part ideal for isolated power supply app lications that use opto-couplers in the feedback loop and where the open-collector output is required to operate down to voltages as low as 200mV. The wide input voltage range of 2V to 18V and output voltage range of 0.2V to 18V enables the ZXRE160 to be powered from an auxiliary rail, while controlling a master rail which is above the auxiliary rail voltage, or below the minimum V IN voltage. This allows it to operate as a low-dropout voltage regulator for microprocessor/DSP/PLD cores. As with other shunt regulators (and shunt references), the ZXRE160 compares its internal amplifier FB pin to a high accuracy internal reference; if FB is below the reference then OUT turns off, but if FB is above the reference then OUT sinks current – up to a maximum of 15mA.
Document number: DS35688 Rev. 2 - 2 4 of 15 www.diodes.com June 2012 © Diodes Incorporated ZXRE160 NEW PRODUCT A Product Line of Diodes Incorporated Absolute Maximum Ratings (Voltages to GND, @TA = +25°C, unless otherwise specified.) Symbol Parameter Rating Unit VIN IN Voltage relative to GND 20 V VOUT OUT Voltage relative to GND 20 V VFB FB Voltage relative to GND 20 V PGND PGND Voltage relative to GND -0.3 to +0.3 V IOUT OUT Pin Current 20 mA TJ Operating Junction Temperature -40 to 150 °C TST Storage Temperature 55 to 150 °C These are stress ratings only. Operation outside the absolute maximum ratings may cause device failure. Operation at the absolute maximum rating for extended periods may reduce device reliability. Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling and transporting these devices. Package Thermal Data Package θJA PDIS TA = 25°C, TJ = 150°C SC70/SOT353 400°C/W 310mW TSOT25 250°C/W 500mW X2-DFN1520-6 TBD TBD Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Symbol Parameter Min Max Units VIN IN Voltage Range (0 to +125°C) 2 18 V VIN IN Voltage Range (-40°C to 0°C) 2.2 18 VOUT OUT Voltage Range 0.2 18 IOUT OUT Pin Current 0.3 15 mA TA Operating Ambient Temperature Range -40 +125 °C
Document number: DS35688 Rev. 2 - 2 5 of 15 www.diodes.com June 2012 © Diodes Incorporated ZXRE160 NEW PRODUCT A Product Line of Diodes Incorporated Electrical Characteristics (@TA = +25°C, VDD = 3V, unless otherwise specified.) TA = +25°C, VIN = 3.3V, VOUT = VFB, IOUT = 5mA, unless otherwise specified.) (Note 4) Symbol Parameter Conditions Min Typ Max Units VFB Feedback voltage ZXRE160A 0.597 0.6 0.603 V ZXRE160 0.594 0.6 0.606 TA = 0°C to +85°C ZXRE160A 0.595 0.605 ZXRE160 0.592 0.608 TA = -40°C to +85°C ZXRE160A 0.594 0.606 ZXRE160 0.591 0.609 TA = -40°C to +125°C ZXRE160A 0.593 0.607 ZXRE160 0.590 0.610 FBLOAD Feedback pin load regulation IOUT = 1 to 15mA 3.8 6 mV TA = -40 to +125°C 10 FBLINE Feedback pin line regulation V IN = 2V to 18V 0.3 1 mV VIN = 2.2V to 18V TA = -40 to +125°C 1.5 FBOVR Output voltage regulation V OUT = 0.2V to 18V, IOUT = 1mA (Ref. Figure 1) mV TA = -40 to +125°C 1.5 IFB FB input bias current VIN = 18V -45 nA TA = -40 to +125°C -200 0 VFB = 0.7V -50 50 IIN Input current VIN = 2V to 18V IOUT = 0.3mA 0.35 0.7 mA VIN = 2.2V to 18V TA = -40 to +125°C 1 VIN = 2V to 18V IOUT = 10mA 0.48 1 mA VIN = 2.2V to 18V TA = -40 to +125°C 1.5 VIN = 18V, IOUT = 0.3mA VFB = 0.7V 3 IOUT(LK) OUT leakage current VIN = 18V, VOUT = 18V, VFB =0V 0.1 µA TA = +125°C 1 ZOUT Dynamic Output Impedance I OUT = 1 to 15mA f < 1kHz 0.25 0.4 Ω TA = -40 to +125°C 0.6 PSRR Power supply rejection ratio F = 300kHz V AC = 0.3VPP >45 dB BW Amplifier Unity Gain Frequency Ref: Figure 2 600 kHz G Amplifier Transconductance 5000 mA/V Note: 4. Production testing of the device is performed at +25°C. Functional operation of the device and parameters specified over the operating temperature range are guaranteed by design, characterization and process control.
Document number: DS35688 Rev. 2 - 2 6 of 15 www.diodes.com June 2012 © Diodes Incorporated ZXRE160 NEW PRODUCT A Product Line of Diodes Incorporated Typical Characteristics
Figure 2. Test Circuits for Gain and Phase Plots
Document number: DS35688 Rev. 2 - 2 8 of 15 www.diodes.com June 2012 © Diodes Incorporated ZXRE160 NEW PRODUCT A Product Line of Diodes Incorporated
Application Information
The following show some typical application examples for the ZXRE160. Figure 3. 15V Supply Monitor due to the bias current of the FB pin. Figure 11, it means the opto-coupler will have to be carefully positioned to enable this. Figure 4. 0.6V Shunt Regulator
1 R1 V VREFOUT
Figure 5. 1.0V Shunt Regulator
Figure 6. 0.6V Series LDO Regulator Figure 7. 1.0V Series LDO Regulator
- Determine I OUT and choose a suitable transistor taking power dissipation into consideration.
- Determine I R3 from (min) KAIBI3 RI + ≥ . The design of the ZXRE160 effectively means there is no I KA(min) limitation as in conventional
ensure that the device operates within its linear range at all times. IKA(min) ≥ 10µA should be adequate for this. Although unlikely to be a problem, ensure that IR3 ≤ 15 mA.
Figure 8. 1V Current-Boosted Shunt Regulator
- Determine I OUT and choose a suitable transistor taking power dissipation into consideration.
- Determine I R3 from (max) OUT 3 RI I=
- It is best to let the ZXRE160 supply as much current as it can before bringing Q1 into conduc tion. Not only does this minimi ze the strain on
Q1, it also guarantees the most stable operation. Choose a nominal value between 10mA and <15mA for this current, IR4.
1 R1REFVMV
VF and IF are forward voltage drop and current of LED1. Figure 9. 1.15V Over-Voltage Indicator
Figure 10. Opto-Isolated 0.6V Shunt Regulator Figure 11. Opto-Isolated 1.0V Shunt Regulator More applications information is available in the following publications which can be found on Diodes’ web site.
Document number: DS35688 Rev. 2 - 2 12 of 15 www.diodes.com June 2012 © Diodes Incorporated ZXRE160 NEW PRODUCT A Product Line of Diodes Incorporated
Ordering Information
Tol. Part Number Package Identification Code Reel Size Tape Width Quantity/Reel 0.5% ZXRE160AET5TA TSOT25 R8 7”, 180mm 8mm 3000 ZXRE160AH5TA SC70/SOT353 R9 7”, 180mm 8mm 3000 ZXRE160AFT4-7 DFN1520H4-6 R8 7”, 180mm 8mm 3000 ZXRE160ET5TA TSOT25 Z8 7”, 180mm 8mm 3000 ZXRE160H5TA SC70/SOT353 Z9 7”, 180mm 8mm 3000 ZXRE160FT4-7 X2-DFN1520-6 Z8 7”, 180mm 8mm 3000 Marking Information 1. TSOT25, SC70/SOT353 2. X2-DFN1520-6
Document number: DS35688 Rev. 2 - 2 13 of 15 www.diodes.com June 2012 © Diodes Incorporated ZXRE160 NEW PRODUCT A Product Line of Diodes Incorporated Package Outline Dimensions (All dimensions in mm.) TSOT25 SC70/SOT353 X2-DFN1520-6 TSOT25 Dim Min Max Typ A − 1.00 − A1 0.01 0.10 − A2 0.84 0.90 − D − − 2.90 E − − 2.80 E1 − − 1.60 b 0.30 0.45 − c 0.12 0.20 − e − − 0.95 e1 − − 1.90 L 0.30 0.50 L2 − − 0.25 θ 0° 8° 4° θ1 4° 12° − All Dimensions in mm SOT353 Dim Min Max A 0.10 0.30 B 1.15 1.35 C 2.00 2.20 D 0.65 Typ F 0.40 0.45 H 1.80 2.20 J 0 0.10 K 0.90 1.00 L 0.25 0.40 M 0.10 0.22 α 0° 8° All Dimensions in mm X2-DFN1520-6 Dim Min Max Typ A − 0.40 − A1 0 0.05 − A3 − − 0.13 b 0.20 0.30 − D 1.45 1.575 − D2 1.00 1.20 − e − − 0.50 E 1.95 2.075 − E2 0.70 0.90 − L 0.25 0.35 − All Dimensions in mm c L E1 E D e 5x b θ 4x 1 θ A A M J LD B C H K F SEATING PLANE A b D e L E
Document number: DS35688 Rev. 2 - 2 14 of 15 www.diodes.com June 2012 © Diodes Incorporated ZXRE160 NEW PRODUCT A Product Line of Diodes Incorporated Suggested Pad Layout TSOT25 SC70/SOT353 X2-DFN1520-6 Dimensions Value (in mm) C 0.950 X 0.700 Y 1.000 Y1 3.199 Dimensions Value (in mm) Z 2.5 G 1.3 X 0.42 Y 0.6 C1 1.9 C2 0.65 Dimensions Value (in mm) Z 1.25 G1 0.45 G2 0.15 X1 1.10 C 0.50 C1 0.25 C Z X Z Y C2C2 G C C X (5x) Y (5x)
Document number: DS35688 Rev. 2 - 2 15 of 15 www.diodes.com June 2012 © Diodes Incorporated ZXRE160 NEW PRODUCT A Product Line of Diodes Incorporated 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 rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her changes without further notice to this document and any product descri bed herein. Diodes Incorporated does not assume any liability ari sing out of the application or use of this document or an y product described herein; neither does Di odes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or us er of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthoriz ed sales channel. Should Customers purchase or use Diodes Inco rporated products for any unintended or una uthorized application, Customers shall i ndemnify and hold Diodes Incorporated and its representativ es harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical component s in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when proper ly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifi cations of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or s ystems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporate d and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2012, Diodes Incorporated www.diodes.com