NOT RECOMMENDED FOR NEW DESIGN
USE
ZXRE160
ZXRE060
0.6V ADJUSTABLE PRECISION SHUNT REGULATOR
Description
The ZXRE060 is a 5-terminal adjustable shunt regulator offering
excellent temperature stability and output handling capability. The
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
operating at low input voltages.
The ZXRE060 is available in two grades with initial tolerances of
0.5% and 1% for the A and standard grades respectively. It is
available in space saving low profile 5 pin SC70-5/SOT353, thin
TSOT23-5 and very small DFN1520H4-6 packages.
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.
Pin Assignments
Top view
SC70-5/SOT353, TSOT23-5
Top view
PGND
6
1
IN
N/C
2
5
GND
OUT
3
4
FB
Features
Low Reference Voltage (V
FB
= 0.6V)
-40 to +125º Temperature Range
C
Reference Voltage Tolerance at +25°
C
0.5%
ZXRE060A
1%
ZXRE060
Typical Temperature Drift
<4mV (0° to +70°
C
C)
<6mV (-40° to +85°
C
C)
<12mV (-40° to +125°
C
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)
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 https://www.diodes.com/quality/lead-free/ for more information 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.
Exposed flag floating or
connect to GND
DFN1520H4-6
Applications
Isolated DC-DC Converters
Core Voltage POL
Low Voltage Low-Dropout Linear Regulators
Shunt Regulators
Adjustable Voltage Reference
Notes:
Typical Application Circuit
ZXRE060
Document number: DS33611 Rev. 7 - 3
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December 2018
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
USE
ZXRE160
ZXRE060
Pin Description
Pin Number
(SC70-5 /SOT353,
TSOT23-5)
1
—
5
4
2
3
—
Pin Number
(DFN1520H4-6)
1
2
3
4
5
6
Flag
Pin Name
Function
Power Ground: Ground return for emitter of output transistor: Connect PGND and
GND together.
No connection
Output. Connect a capacitor close to device between OUT and GND. See the
Applications Information section.
Feedback Input. Regulates to 600mV nominal.
Analog Ground: Ground return for reference and amplifier: Connect GND and PGND
together.
Supply Input. Connect a 0.1μF ceramic capacitor close to the device from IN to
GND.
Floating or connect to GND
PGND
N/C
OUT
FB
GND
IN
—
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
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 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.
ZXRE060
Document number: DS33611 Rev. 7 - 3
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December 2018
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
USE
ZXRE160
ZXRE060
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 Temperature
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
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
SC70-5/SOT353
TSOT23-5
DFN1520H4-6
θ
JA
400°
C/W
250°
C/W
TBD
P
DIS
T
A
= +25° T
J
= +150°
C,
C
310mW
500mW
TBD
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
Unit
ZXRE060
Document number: DS33611 Rev. 7 - 3
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December 2018
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
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ZXRE160
ZXRE060
Electrical Characteristics
(@T
A
= +25° V
IN
= 3.3V, V
OUT
= V
FB
, I
OUT
= 5mA, unless otherwise stated. (Note 4))
C,
Symbol
Parameter
—
T
A
= 0° to +85°
C
C
V
FB
Feedback Voltage
T
A
= -40° to +85°
C
C
T
A
= -40° to +125°
C
C
FB
LOAD
FB
LINE
FB
OVR
I
FB
Feedback Pin Load Regulation I
OUT
= 1 to 15mA
Feedback Pin Line Regulation
Output Voltage Regulation
FB Input Bias Current
V
IN
= 2V to 18V
V
IN
= 2.2V to 18V
V
OUT
= 0.2V to 18V,
I
OUT
= 1mA
V
IN
= 18V
V
IN
= 2V to 18V
V
IN
= 2.2V to
18V
I
IN
Input Current
V
IN
= 2V to 18V
V
IN
= 2.2V to
18V
I
OUT(LK)
V
IN
= 18V,
V
OUT
= 18V,
V
FB
= 0V
I
OUT
= 1 to 15mA
f < 1kHz
f = 300kHz
V
AC
= 0.3V
PP
Ref: Figure 1
—
I
OUT
= 10mA
T
A
= -40 to +125°
C
—
T
A
= +125°
C
—
T
A
= -40 to +125°
C
—
—
—
—
—
—
—
—
—
—
—
—
0.25
—
>45
600
5000
1.5
0.1
1
0.4
0.6
—
—
—
µA
—
—
0.48
1
mA
I
OUT
= 0.3mA
T
A
= -40 to +125°
C
—
—
1
Conditions
ZXRE060A
ZXRE060
ZXRE060A
ZXRE060
ZXRE060A
ZXRE060
ZXRE060A
ZXRE060
—
T
A
= -40 to +125°
C
—
T
A
= -40 to +125°
C
—
T
A
= -40 to +125°
C
—
T
A
= -40 to +125°
C
—
Min
0.597
0.594
0.595
0.592
0.594
0.591
0.593
0.590
—
—
—
—
—
—
—
-200
—
Typ
0.6
0.6
—
—
—
—
—
—
3.8
—
0.1
—
—
—
-45
—
0.35
Max
0.603
0.606
0.605
0.608
0.606
0.609
0.607
0.610
6
10
1
1.5
1
1.5
—
0
0.7
mA
mV
mV
mV
nA
V
Unit
OUT Leakage Current
Z
OUT
PSRR
BW
G
Note:
Dynamic Output Impedance
Power Supply Rejection Ratio
Amplifier Unity Gain Frequency
Amplifier Transconductance
dB
kHz
mA/V
4. Production testing of the device is performed at +25C. Functional operation of the device and parameters specified over the operating temperature
range are guaranteed by design, characterisation and process control.
ZXRE060
Document number: DS33611 Rev. 7 - 3
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© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
USE
ZXRE160
ZXRE060
Typical Characteristics
OUT Voltage Change (mV)
ZXRE060
Document number: DS33611 Rev. 7 - 3
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FB Bias Current (nA)
December 2018
© Diodes Incorporated
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