A Product Liine of Dio odes Incorpo orated ZXRD060 Z 0 0.6V DUAL L ADJUSTA ABLE PRECISION SH HUNT REG GULATOR Descriptio on Pin Assignme A nts The ZXRD06 60 is a 10-tterminal adjusstable dual shunt regulator offe ering excellent temperature stability s and ou utput handling capability. The ZX XRD060 simplifies the design of isolated low voltage DC-DC regulators. With its low 0.6V 0 FB pin, it can control the reg gulation of railss as low 0.6V. This makes it idea al for state of the art microprocessor/DSP and PLD core volttage POL conv verters. ZXRD0 060_FK (DFN26 626P10) PGND1 1 NEW PRODUCT The device open-collector o output o can ope erate from 0.2V V to 18V and regu ulated output voltage v can be set by selectio on of two external divider d resistors. Separating th he input from th he open collecctor output ena ables the ZXRD060 0 to be used to make low--cost low drop p-out regulators operating at low input i voltages. The ZXRD060 is availab ble in two grades with in nitial tolerances off 0.5% and 1% % for the A and d standard gra ades respectively. It is available in the space saving low prrofile 626P10 packag ge. 10 pin DFN26 Features • • • • • • • • Low reference voltage (VFB = 0.6V) -40 to 12 25ºC temperatu ure range Referencce voltage tolerrance at 25°C o 0.5% % ZXRD060A A o 1% ZXRD060 Typical te emperature drift o <4 mV m (0°C to 70°C C) o <6 mV m (-40°C to 85 5°C) o <12m mV (-40°C to 12 25°C) 0.2V to 18V 1 open-collec ctor output High pow wer supply rejection o (>45 5dB at 300kHz)) Lead Fre ee by design/Ro oHS Compliant (Note 1) “Green”/H Halogen free device d (Note 2) Notes: IN1 OUT1 N/C GND FB1 PGND2 IN2 OUT2 FB2 App plications • • • • • Isolated DC-DC C converters Core voltage POL C L Low Voltage Lo ow-Dropout line ear regulators S Shunt regulatorrs A Adjustable volta age reference 1. No purposefully p added lead. 2. Diod des Inc.’s “Green” policy p can be found d on our website at http://www.diodes..com/products/lead d_free/index.php. Typical Ap pplication Circuit ZXRD060 Document numberr: DS35359 Rev. 4 - 2 1 of 12 www.diodes.com w m August 2011 © Dio odes Incorporated A Product Line of Diodes Incorporated ZXRD060 0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR NEW PRODUCT Pin Description Pin (DFN) Name 1 PGND1 2 OUT1 3 4 GND PGND2 5 OUT2 6 7 8 9 10 Flag FB2 IN2 FB1 IN1 Function Power Ground 1: Ground return for emitter of output transistor: Connect PGND1/2 and GND together. Output 1. Connect a capacitor close to device between OUT1 and GND. See Applications Information section. Analog Ground: Ground return for reference and amplifiers: Connect GND and PGND1/2 together. Power Ground 2: Ground return for emitter of output transistor: Connect PGND1/2 and GND together. Output 2. Connect a capacitor close to device between OUT2 and GND. See Applications Information section. Feedback Input 2. Regulates to 600mV nominal. Supply Input 2. Connect a 0.1μF ceramic capacitor close to the device from IN2 to GND. Feedback Input 1. Regulates to 600mV nominal. No connection Supply Input 1. Connect a 0.1μF ceramic capacitor close to the device from IN1 to GND. Floating or connect to GND Function Block Diagram The ZXRD060 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 applications 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 ZXRD060 to be powered from an auxiliary rail, while controlling a master rail which is above the auxiliary rail voltage, or below the minimum VIN 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 ZXRD060 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. ZXRD060 Document number: DS35359 Rev. 4 - 2 2 of 12 www.diodes.com August 2011 © Diodes Incorporated A Product Line of Diodes Incorporated ZXRD060 0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated) Symbol Parameter Rating Unit VIN VOUT VFB PGND IOUT TJ TST IN Voltage relative to GND OUT Voltage relative to GND FB Voltage relative to GND PGND Voltage relative to GND OUT Pin Current Operating Junction Temperture Storage Temperature 20 20 20 -0.3 to +0.3 20 -40 to 150 55 to 150 V V V V mA °C °C NEW PRODUCT Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. 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 DFN2626P10 152°C/W PDIS TA = 25°C, TJ = 150°C 0.8W Recommended Operating Conditions Symbol Parameter Min Max VIN IN Voltage Range (0 to 125°C) 2 18 VIN IN Voltage Range (-40 to 0°C) 2.2 18 OUT Voltage Range 0.2 18 VOUT IOUT TA Units V OUT Pin Current 0.3 15 mA Operating Ambient Temperature Range -40 125 °C ZXRD060 Document number: DS35359 Rev. 4 - 2 3 of 12 www.diodes.com August 2011 © Diodes Incorporated A Product Line of Diodes Incorporated ZXRD060 0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR Electrical Characteristics TA = 25°C, VIN = 3.3V, VOUT = VFB, IOUT = 5mA unless otherwise stated (Note 3). Symbol Parameter Conditions TA = 0°C to 85°C VFB Feedback voltage Min Typ Max ZXRD060A ZXRD060 0.597 0.594 0.6 0.6 0.603 0.606 ZXRD060A ZXRD060 0.595 0.592 0.605 0.608 ZXRD060A 0.594 0.606 ZXRD060 0.591 0.609 ZXRD060A 0.593 0.607 ZXRD060 0.590 0.610 Units V NEW PRODUCT TA = -40°C to 85°C TA = -40°C to 125°C 3.8 FBLOAD Feedback pin load regulation IOUT = 1 to 15mA FBLINE Feedback pin line regulation VIN = 2V to 18V VIN = 2.2V to 18V FBOVR Output voltage regulation VOUT = 0.2V to 18V, IOUT =1mA (Ref. Figure 1) FB input bias current VIN = 18V IFB TA = -40 to 125°C 0.1 TA = -40 to 125°C 6 10 1 1.5 TA = -40 to 125°C 1.5 -45 TA = -40 to 125°C -200 0 0.35 VIN = 2.2V to 18V 1 Input current 0.48 1 IOUT =10mA VIN = 2.2V to 18V VIN = 18V, VOUT = 18V, VFB =0V IOUT(LK) OUT leakage current ZOUT Dynamic Output Impedance IOUT = 1 to 15mA f < 1kHz Power supply rejection ratio f = 300kHz VAC= 0.3VPP G Note: nA mA TA = -40 to 125°C VIN = 2V to 18V BW mV 0.7 IOUT =0.3mA PSRR mV 1 VIN = 2V to 18V IIN mV mA TA = -40 to 125°C 1.5 0.1 TA = 125°C 1 0.25 TA = -40 to125°C 0.4 0.6 µA Ω >45 dB Amplifier Unity Gain Ref: Fig 2 Frequency 600 kHz Amplifier Transconductance 5000 mA/V 3. 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, characterisation and process control. ZXRD060 Document number: DS35359 Rev. 4 - 2 4 of 12 www.diodes.com August 2011 © Diodes Incorporated A Product Line of Diodes Incorporated ZXRD060 0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR NEW PRODUCT Typical Characteristics ZXRD060 Document number: DS35359 Rev. 4 - 2 5 of 12 www.diodes.com August 2011 © Diodes Incorporated A Product Line of Diodes Incorporated ZXRD060 0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR Typical Operating Conditions (cont.) 200 225 200 225 150 180 100 135 100 135 50 90 50 90 NEW PRODUCT 0 45 Gain (dB) 180 Phase (deg) Gain (dB) 150 0 45 Gain Gain Phase Phas e -50 0 1 10 Phase (deg) VOUT = 6V COUT = 0.22uF V OUT = 0.6V COUT = 2.2uF 100 1k 10k 100k 1M -50 0 1 10 100 1k 10k 100k 1M Frequency (Hz) Frequency (Hz) Gain and Phase vs Frequency, V OUT=0.6V Gain and Phase vs Frequency, VOUT=6V 50Ω 50Ω Fig. 2 Test Circuits for Gain and Phase Plots ZXRD060 Document number: DS35359 Rev. 4 - 2 6 of 12 www.diodes.com August 2011 © Diodes Incorporated A Product Liine of Dio odes Incorpo orated ZXRD060 Z 0 0.6V DUAL L ADJUSTA ABLE PRECISION SH HUNT REG GULATOR Applicatio ons Informa ation The following show some ty ypical applicattion examples for the ZXRD D060. It is reco ommended to include the compensation capacitor C2 to o guarantee stability. C2 mayy range in value e from 0.1µF to o 10µF depend ding on the app plication. The time t constant formed by C2 and R3 should be greater tha an 1ms multiplied by the feedback factor R2 2/(R1 + R2). NEW PRODUCT Both C1 and C2 C should be as close to the e ZXRD060 ass possible and connected to it with the sho ortest possible track. In the case of fig 9 an nd fig10, it mea ans the opto-co oupler will have e to be carefully positioned to o enable this. VOU UT = VREF R1 ⎞ ⎛ VOUT = VREF ⎜1 + ⎟ ⎝ R2 ⎠ V − VOUT R3 = IN IR3 R3 = VIN − VOU UT IR3 Fig.3 0.6V Shunt S Regula ator Fig.4 1.0V 1 Shunt Regulator R VOU UT = VREF R1 ⎞ ⎛ VOUT = VREF ⎜1 + ⎟ R2 ⎠ ⎝ Fiig.5 0.6V Serries LDO regulator Fig.6 1.0 0V Series LD DO regulator Design guide 1. 2. Determin ne IOUT and cho oose a suitable e transistor taking power dissiipation into con nsideration. Determin ne IB from I = IOUT (max) 3. Determin ne IR3 from 4. conventional reference es. There is onlyy an output lea akage current which w is a maxiimum of 1µA. Nevertheless, N itt is e an IKA(min) to ensure e that the device operates within its linear range at alll times. IKA(min) ≥ 10µA necessary to determine should be b adequate forr this. Determin ne R3 from R3 = VIN − ( VOUT + VBE B ). 5. Although h unlikely to be a problem, ensure that IR3 ≤ 15 mA. B (h FE(min) + 1) IR3 ≥ IB + IKA (min) . Th he design of the ZXRD060 eff ffectively means there is no IKA(min) limitation as in K IR3 ZXRD060 Document numberr: DS35359 Rev. 4 - 2 7 of 12 www.diodes.com w m August 2011 © Dio odes Incorporated A Product Liine of Dio odes Incorpo orated ZXRD060 Z 0 0.6V DUAL L ADJUSTA ABLE PRECISION SH HUNT REG GULATOR Applicatio ons Informa ation (cont..) R1 ⎞ ⎛ VOUT = VREF ⎜1 + ⎟ R2 ⎠ ⎝ ( VOUT ≥ 0.2V + VBE ) NEW PRODUCT R3 = VIN − VOUT IR3 Fig.7 1V Currrent-Booste ed Shunt Reg gulator Design guide 1. 2. Determiine IOUT and ch hoose a suitable e transistor takking power disssipation into consideration. Determiine IB from I = IOUT(max) 3. Determiine IR3 from IR3 = IOUT(max) 4. Determiine R3 from R3 = 5. It is besst to let the ZXR RD060 supply as a much curren nt as it can beffore bringing Q1 into conductiion. Not only do oes this minimise the strain on Q1, it also gua arantees the most m stable operation. Choose e a nominal value between 10 0mA and <15mA for this currentt, IR4. Calculatte R4 from R4 = VBE 6. B (hFE(min) + 1) VIN − VOUT IR3 IR4 VOUT goes low and a LED1 is lit when w monitored supply s R1 ⎞ ⎛ VM > VREF ⎜1 + ⎟ ⎝ R2 ⎠ V − ( VF + 0.2) R3 = IN IR3 15mA ≥ IR3 ≤ IF(MAX) orward voltage drrop and current of o LED1. VF and IF are fo Fig. 8 1.15V Overr-Voltage Ind dicator ZXRD060 Document numberr: DS35359 Rev. 4 - 2 8 of 12 www.diodes.com w m August 2011 © Dio odes Incorporated A Product Liine of Dio odes Incorpo orated ZXRD060 Z 0 0.6V DUAL L ADJUSTA ABLE PRECISION SH HUNT REG GULATOR NEW PRODUCT Applicatio ons Informa ation (cont..) 15mA ≥ IR3 ≤ IF(MAX) 1 mA ≥ IR3 ≤ IF(MAX) 15 V − ( VF + 0.2) R 3 = IN IR3 V − ( VF + 0.2) R3 = IN IR3 VOU UT = VREF R1 ⎞ ⎛ VOUT = VREF ⎜ 1 + ⎟ R2 ⎠ ⎝ Fig.9 Opto-Isolatted 0.6V Shu unt Regulatorr Fig. 10 Opto-Isolated 1..0V Shunt Re egulator VF and IF are fo orward voltage e drop and forw ward current resspectively for th he opto-couple er LED. More applicatio ons information n is available in n the following publications which w can be fou und on Diodes’ web site. AN58 - Design ning with Diode es’ References – Shunt Regullation AN59 - Design ning with Diode es’ References – Series Regu ulation AN60 - Design ning with Diode es’ References – Fixed Regullators and Opto o-Isolation AN61 - Design ning with Diode es’ References – Extending th he operating vo oltage range AN62 - Design ning with Diode es’ References – Other Appliccations AN63 - Design ning with Diode es’ References – ZXRE060 Lo ow Voltage Reg gulator ZXRD060 Document numberr: DS35359 Rev. 4 - 2 9 of 12 www.diodes.com w m August 2011 © Dio odes Incorporated A Product Line of Diodes Incorporated ZXRD060 0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR Ordering Information XX Tolerance Package Packing A: ±0.5% None: ±1% FK: DFN2626P10 -7: Tape & Reel Tol. Order Code Part 0.5% 1% ZXRD060AFK-7 ZXRD060FK-7 DFN2626P10 DFN2626P10 Identification Code S6A S06 Reel Size Tape Width Quantity/Reel 7”, 180mm 7”, 180mm 8mm 8mm 3000 3000 For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf Marking Information DFN2626P10 4 6 5 7 5 9 4 8 10 6 Top View XXX ZXRD060 Document number: DS35359 Rev. 4 - 2 3 5 2 4 3 2 Y WX 1 NEW PRODUCT ZXRD060 X XX XXX : Identification code Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z : represents 52 and 53 X : A~Z : Internal Code 10 of 12 www.diodes.com August 2011 © Diodes Incorporated A Product Line of Diodes Incorporated ZXRD060 0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR Package Outline Dimensions (All Dimensions in mm) NEW PRODUCT DFN2626P10 ZXRD060 Document number: DS35359 Rev. 4 - 2 11 of 12 www.diodes.com August 2011 © Diodes Incorporated A Product Line of Diodes Incorporated ZXRD060 0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR 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). 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