Diodes ZXRD060 User Manual

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XRD060

.6V DUA

ADJUST

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CISION S

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NEW PRODUCT

Descripti

The ZXRD0 regulator off handling cap isolated low FB pin, it can makes it ide PLD core vol

The device 18V and reg two external

Separating t the ZXRD06 regulators op

The ZXRD0 tolerances o respectively. 10 pin DFN2

Features

• Low refe

• -40 to 1

• Referen

o 0.5 o 1%

• Typical t

o <4 o <6 o <12

• 0.2V to

• High po

o (>4

• Lead Fr

• “Green”/

Notes: 1. No

2. Dio

n

0 is a 10-

ring excellent

ability. The Z

voltage DC-D

control the re

l for state of

age POL con

pen-collector

lated output ivider resisto

e input from t

to be used

erating at low 60 is availa

0.5% and 1 It is available

26P10 packa

rence voltage

5ºC temperat

e voltage tole ZXRD060

ZXRD060

mperature dr V (0°C to 70° V (-40°C to 8

V (-40°C to 1 8V open-colle

er supply reje dB at 300kHz e by design/R

alogen free

urposefully added

es Inc.’s “Green”

erminal adju

temperature

RD060 simpl

C regulators.

ulation of rail

the art microp

erters.

utput can op oltage can be s.

e open colle

to make lo

nput voltages.

le in two g for the A an

in the space

e.

(VFB = 0.6V)

re range

ance at 25°C

ft

)

°C)

5°C)

tor output ction

HS Complian

evice (Note 2)

lead. olicy can be foun

table dual s tability and o

ifies the desig

With its low

as low 0.6V.

rocessor/DSP

rate from 0.2

set by selecti

tor output en cost low dro

rades with i

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saving low p

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PGND2

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IN1 N/C

FB1 IN2

FB2

Typical A

plication

Circuit

ZXRD060

Document numbe

: DS35359 Rev. 4

- 2

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0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR

Pin Description

(DFN)

1 PGND1 Power Ground 1: Ground return for emitter of output transistor: Connect PGND1/2 and GND together. 2 OUT1 3 GND Analog Ground: Ground return for reference and amplifiers: Connect GND and PGND1/2 together.

4 PGND2 Power Ground 2: Ground return for emitter of output transistor: Connect PGND1/2 and GND together. 5 OUT2 6 FB2 Feedback Input 2. Regulates to 600mV nominal.

7 IN2 Supply Input 2. Connect a 0.1μF ceramic capacitor close to the device from IN2 to GND. 8 FB1 Feedback Input 1. Regulates to 600mV nominal. 9 No connection

10 IN1 Supply Input 1. Connect a 0.1μF ceramic capacitor close to the device from IN1 to GND.

Flag Floating or connect to GND

Name Function

Output 1. Connect a capacitor close to device between OUT1 and GND. See Applications Information section.

Output 2. Connect a capacitor close to device between OUT2 and GND. See Applications Information section.

ZXRD060

Function Block Diagram

NEW PRODUCT

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 do wn to 600mV and makes th e part idea l for is olated po wer suppl y applications that use opto-couplers in the feedback loop and where the open-collect or output is required to op erate down to v oltages as lo w as 200mV.

The wide input voltage range of 2V to 18V and output voltage rang e of 0.2V to 1 8V enables the ZXRD060 to be po wered from an auxiliary rail, while controlling a master rail which is above the auxi liary rail volt age, or belo w the minimum V 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 c ompares its internal amplifier FB pin to a high accurac y 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

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voltage. This

IN

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0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR

Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated)

Symbol Parameter Rating Unit

VIN IN Voltage relative to GND 20 V

V

OUT Voltage relative to GND 20 V

OUT

VFB FB Voltage relative to GND 20 V

P

PGND Voltage relative to GND -0.3 to +0.3 V

GND

I

OUT Pin Current 20 mA

OUT

TJ Operating Junction Temperture -40 to 150 °C

TST Storage Temperature 55 to 150 °C

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

P

DIS

NEW PRODUCT

Package θJA

TA = 25°C, TJ = 150°C

DFN2626P10 152°C/W 0.8W

ZXRD060

Recommended Operating Conditions

Symbol Parameter Min Max Units

VIN IN Voltage Range (0 to 125°C) 2 18 VIN IN Voltage Range (-40 to 0°C) 2.2 18

V

OUT Voltage Range 0.2 18

OUT

I

OUT Pin Current 0.3 15 mA

OUT

TA Operating Ambient Temperatu r e Range -40 125 °C

V

ZXRD060

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ZXRD060

0.6V DUAL ADJUSTABLE PRECISION SHUNT REGULATOR

Electrical Characteristics

= 25°C, VIN = 3.3V, V

T

A

Symbol Parameter Conditions Min Typ Max Units

VFB Feedback voltage

OUT

= VFB, I

= 5mA unless otherwise stated (Note 3).

OUT

TA = 0°C to 85°C

TA = -40°C to 85°C

ZXRD060A 0.597 0.6 0.603 ZXRD060 0.594 0.6 0.606 ZXRD060A 0.595 0.605 ZXRD060 0.592 0.608

ZXRD060A 0.594 0.606 ZXRD060 0.591 0.609

V

TA = -40°C to 125°C

ZXRD060A 0.593 0.607 ZXRD060 0.590 0.610

3.8 6 TA = -40 to 125°C 10

mV

mV 1 TA = -40 to 125°C

1.5

-45 TA = -40 to 125°C -200 0

mV

nA

0.35 0.7

mA

NEW PRODUCT

FB

LOAD

LINE

OVR

IFB

Feedback pin load regulation

Feedback pin line regulation

Output voltage regulation

FB input bias current

I

= 1 to 15mA

OUT

= 2V to 18V 0.1 1

V

IN

V

= 2.2V to 18V TA = -40 to 125°C 1.5

IN

= 0.2V to 18V,

V

OUT

=1mA

I

OUT

(Ref. Figure 1)

VIN = 18V

V

= 2V to 18V

IN

V

= 2.2V to 18V TA = -40 to 125°C 1

IN

I

OUT

=0.3mA

IIN Input current

V

= 2V to 18V

IN

V

= 2.2V to 18V TA = -40 to 125°C 1.5

IN

= 18V,

V

I

OUT(LK)

Z

PSRR

BW

Note: 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.

OUT leakage current

Dynamic Output

OUT

Impedance Power supply

rejection ratio Amplifier Unity Gain

Frequency Amplifier

G

Transconductance

IN

= 18V,

V

OUT

=0V

V

FB

I

= 1 to 15mA

OUT

f < 1kHz f = 300kHz

= 0.3VPP

V

AC

Ref: Fig 2

I

OUT

=10mA

0.48 1

mA

0.1 TA = 125°C

1

0.25 0.4 TA = -40 to125°C 0.6

>45 dB

600 kHz

5000 mA/V

µA

Ω

ZXRD060

Document number: DS35359 Rev. 4 - 2

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August 2011