A Product Li of
ine
Dio
odes Incorpo
orated
ZXRD060
Z
0.6V DUAL ADJUSTA
0
L
ABLE PRECISION SH
HUNT REG
GULATOR
Descriptio
on
The ZXRD06 is a 10-t
60
terminal adjus
stable dual shunt
regulator offe
ering excellent temperature s
stability and ou
utput
handling capability. The ZX
XRD060 simplifies the design of
isolated low voltage DC-DC regulators. With its low 0
0.6V
FB pin, it can control the reg
gulation of rails as low 0.6V. This
s
makes it idea for state of the art microprocessor/DSP and
al
PLD core volt
tage POL conv
verters.
The device o
open-collector output can ope
o
erate from 0.2V to
V
18V and regu
ulated output voltage can be set by selectio of
v
on
two external d
divider resistors.
Pin A
Assignments
ZXRD0
060_FK
(DFN26
626P10)
PGND1 1
OUT1
GND
PGND2
OUT2
IN1
N/C
FB1
IN2
FB2
NEW PRODUCT
Separating th input from th open collec
he
he
ctor output ena
ables
the ZXRD060 to be used to make low-
0
-cost low drop
p-out
regulators operating at low input voltages.
i
The ZXRD060 is availab
ble in two grades with in
nitial
tolerances of 0.5% and 1% for the A and standard gra
f
%
d
ades
respectively. It is available in the space saving low pr
rofile
626P10 packag
ge.
10 pin DFN26
App
plications
•
•
•
•
•
Isolated DC-DC converters
C
Core voltage POL
C
Low Voltage Lo
L
ow-Dropout line regulators
ear
Shunt regulator
S
rs
Adjustable volta reference
A
age
Features
•
•
•
Low reference voltage (V
FB
= 0.6V)
-40 to 12
25ºC temperatu range
ure
Referenc voltage toler
ce
rance at 25°C
o
0.5%
%
ZXRD060A
A
o
1%
ZXRD060
Typical te
emperature drift
o
<4 m (0°C to 70°C
mV
C)
o
<6 m (-40°C to 85
mV
5°C)
o
<12m (-40°C to 12
mV
25°C)
0.2V to 1 open-collec output
18V
ctor
High pow supply rejection
wer
o
(>45 at 300kHz)
5dB
)
Lead Fre by design/Ro
ee
oHS Compliant (Note 1)
“Green”/H
Halogen free device (Note 2)
d
•
•
•
•
•
Notes:
1. No p
purposefully added lead.
2. Diod Inc.’s “Green” policy can be found on our website at http://www.diodes.
des
p
d
.com/products/lead
d_free/index.php.
Typical Ap
pplication Circuit
ZXRD060
Document number DS35359 Rev. 4 - 2
r:
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
Pin Description
Pin
(DFN)
1
2
3
4
5
6
7
8
9
10
Flag
Name
PGND1
OUT1
GND
PGND2
OUT2
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
NEW PRODUCT
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 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 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
V
IN
V
OUT
V
FB
P
GND
I
OUT
T
J
T
ST
Parameter
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
Rating
20
20
20
-0.3 to +0.3
20
-40 to 150
55 to 150
Unit
V
V
V
V
mA
°C
°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.
NEW PRODUCT
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
DFN2626P10
θ
JA
152°C/W
P
DIS
T
A
= 25°C, T
J
= 150°C
0.8W
Recommended Operating Conditions
Symbol
V
IN
V
IN
V
OUT
I
OUT
T
A
Parameter
IN Voltage Range (0 to 125°C)
IN Voltage Range (-40 to 0°C)
OUT Voltage Range
OUT Pin Current
Operating Ambient Temperature Range
Min
2
2.2
0.2
0.3
-40
Max
18
18
18
15
125
mA
°C
V
Units
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
T
A
= 25°C, V
IN
= 3.3V, V
OUT
= V
FB
, I
OUT
= 5mA unless otherwise stated (Note 3).
Symbol
Parameter
Conditions
ZXRD060A
ZXRD060
T
A
= 0°C to 85°C
ZXRD060A
ZXRD060
ZXRD060A
T
A
= -40°C to 85°C
ZXRD060
ZXRD060A
T
A
= -40°C to 125°C
ZXRD060
Min
0.597
0.594
0.595
0.592
0.594
0.591
0.593
0.590
Typ
0.6
0.6
Max
0.603
0.606
0.605
0.608
0.606
0.609
0.607
0.610
Units
V
FB
Feedback voltage
V
NEW PRODUCT
FB
LOAD
FB
LINE
Feedback pin load
regulation
Feedback pin line
regulation
Output voltage
regulation
FB input bias
current
I
OUT
= 1 to 15mA
V
IN
= 2V to 18V
V
IN
= 2.2V to 18V
V
OUT
= 0.2V to 18V,
I
OUT
=1mA
(Ref. Figure 1)
V
IN
= 18V
V
IN
= 2V to 18V
I
OUT
=0.3mA
V
IN
= 2.2V to 18V
3.8
T
A
= -40 to 125°C
0.1
T
A
= -40 to 125°C
6
10
1
1.5
1
mV
mV
FB
OVR
T
A
= -40 to 125°C
-45
T
A
= -40 to 125°C
-200
0.35
T
A
= -40 to 125°C
0.48
1.5
mV
I
FB
0
0.7
nA
mA
1
1
mA
T
A
= -40 to 125°C
1.5
0.1
T
A
= 125°C
0.25
T
A
= -40 to125°C
>45
600
5000
1
0.4
0.6
µA
Ω
dB
kHz
mA/V
I
IN
Input current
V
IN
= 2V to 18V
I
OUT
=10mA
V
IN
= 2.2V to 18V
V
IN
= 18V,
V
OUT
= 18V,
V
FB
=0V
I
OUT
= 1 to 15mA
f < 1kHz
f = 300kHz
V
AC
= 0.3V
PP
I
OUT(LK)
OUT leakage
current
Dynamic Output
Impedance
Power supply
rejection ratio
Z
OUT
PSRR
BW
G
Note:
Amplifier Unity Gain
Ref: Fig 2
Frequency
Amplifier
Transconductance
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
Typical Characteristics
NEW PRODUCT
ZXRD060
Document number: DS35359 Rev. 4 - 2
5 of 12
www.diodes.com
August 2011
© Diodes Incorporated
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