NOT RECOMMENDED FOR NEW DESIGN USE ZXRE160 ZXRE060 0.6V ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments The ZXRE060 is a 5-terminal adjustable shunt regulator offering excellent temperature stability and output handling capability. The TToopp v viieeww ZXRE060 simplifies the design of isolated low voltage DC-DC regulators. With its low 0.6V FB pin, it can control the regulation of rails as low 0.6V. This makes it ideal for state of the art microprocessor/DSP and PLD core voltage POL converters. The device open-collector output can operate from 0.2V to 18V and regulated output voltage can be set by selection of two external divider resistors. Separating the input from the open collector output enables the ZXRE060 to be used to make low-cost low drop-out regulators SC70-5/SOT353, TSOT23-5 operating at low input voltages. TTopop v viiewew The ZXRE060 is available in two grades with initial tolerances of 0.5% and 1% for the A and standard grades respectively. It is PPGGNDND 66 ININ available in space saving low profile 5 pin SC70-5/SOT353, thin 11 TSOT23-5 and very small DFN1520H4-6 packages. 55 GGNDND N/CN/C 22 The ZXRE060 in TSOT23-5 has its OUT, GND and FB pins matching the Cathode, Anode and reference pins of the TL432 and TLV431 in SOT23-3, thereby facilitating simple upgrade paths. OOUTUT 44 FBFB 33 Features EExxpoposseded ffllagag fflloaoatitingng or or Low Reference Voltage (V = 0.6V) FB ccononnenecctt to to G GNDND -40 to +125C Temperature Range Reference Voltage Tolerance at +25C DFN1520H4-6 0.5% ZXRE060A 1% ZXRE060 Typical Temperature Drift Applications <4mV (0C to +70C) Isolated DC-DC Converters <6mV (-40C to +85C) Core Voltage POL <12mV (-40C to +125C) Low Voltage Low-Dropout Linear Regulators 0.2V to 18V Open-collector Output Shunt Regulators High Power Supply Rejection Adjustable Voltage Reference >45dB at 300kHz Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See NOT RECOMMENDED FOR NEW DESIGN USE ZXRE160 ZXRE060 Pin Description Pin Number Pin Number (SC70-5 /SOT353, Pin Name Function (DFN1520H4-6) TSOT23-5) Power Ground: Ground return for emitter of output transistor: Connect PGND and 1 1 PGND GND together. No connection 2 N/C Output. Connect a capacitor close to device between OUT and GND. See the 5 3 OUT Applications Information section. Feedback Input. Regulates to 600mV nominal. 4 4 FB Analog Ground: Ground return for reference and amplifier: Connect GND and PGND 2 5 GND together. Supply Input. Connect a 0.1F ceramic capacitor close to the device from IN to 3 6 IN GND. Floating or connect to GND Flag Function Block Diagram The ZXRE060 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 ZXRE060 to be powered from an auxiliary rail, while controlling a master rail which is above the auxiliary rail voltage, or below the minimum V voltage. This allows it to operate as a low- IN dropout voltage regulator for microprocessor/DSP/PLD cores. As with other shunt regulators (and shunt references), the ZXRE060 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. 2 of 12 ZXRE060 December 2018 Diodes Incorporated www.diodes.com Document number: DS33611 Rev. 7 - 3