XTRM Series
XTR70020
HIGH-TEMPERATURE, HIGH INPUT VOLTAGE, 2A POSITIVE
LDO REGULATOR
FEATURES
▲ Operational beyond the -60°C to +230°C temperature range.
▲ Input voltages from 3.0V to 30V.
▲ Possible output voltages from 0.6V to 30V.
▲ Accurate bandgap reference (+/-3%).
▲ No minimum dropout imposed (current limited).
▲ High output current with low dropout:
o
1A @ 230°C with 0.63V, 2A @ 230°C with 1.4V
▲ Low current consumption in full-power (2.3mA) and low-power
modes (950µA).
▲ Over current protection (hiccup mode).
▲ Customer selectable Thermal Shutdown protection.
▲ Customer selectable UVLO protection.
▲ Low noise : 550uV for Vout=15V / 75uV for Vout=0.9V
▲ Soft startup and soft shutdown.
▲ Stable over a wide range of load capacitance (0.5uF to 50µF).
▲ Low temperature dependence (40 ppm/°C).
▲ Excellent line (0.015%/V) and load (0.15%/A) regulations.
▲ Monolithic design for high-reliability.
▲ Latch-up free.
▲ Ruggedized SMT and thru-hole packages.
▲ Also available as bare die.
DESCRIPTION
XTR70020 is a family of high-temperature, high-input voltage,
2Amp ultra low dropout voltage regulators designed for extreme
reliability high voltage and high temperature applications. Being
able to operate with input voltages from 3.0V to 30V, XTR70020
parts can source a current of 2A at +230°C while providing excel-
lent regulation characteristics with a dropout as low as 1.2V.
Several preset reference voltages are available from 0.6V to 15V
allowing output voltages from 0.6V to virtually 30V.
Four protection features are implemented to ensure a good oper-
ation and reliability of the circuit: UVLO, hiccup modes short-
circuit protection, customer selectable thermal shutdown, soft
turn-on/off.
XTR70020 parts can be used in a wide range of applications
such as high fan-out and low-dropout regulators, adjustable pow-
er supply, current sources, as well as precision bridge excitation.
Special design techniques were used allowing XTR70020 parts
to offer a precise, robust and reliable operation in critical applica-
tions. Full functionality is guaranteed from -60°C to +230°C,
though operation well below and above this temperature range is
achieved.
XTR70020 parts have been designed to reduce system cost and
ease adoption by reducing the learning curve and providing smart
and easy to use features.
Parts from the XTR70020 family are available in ruggedized SMT
and thru-hole packages, as well as bare dies.
APPLICATIONS.
▲ Reliability-critical, Automotive, Aeronautics & Aerospace,
Down-hole.
▲ High-efficiency regulated power supplies, bridge excitation,
cable- or battery-powered applications.
PRODUCT HIGHLIGHT
VOUT selected using internal reference and resistor divider
VIN
VINPWR
VIN
VOUT
VOUT selected using internal reference only
VIN
VINPWR
VIN
VOUT
Vout
XTR70021
GND
0.6V
GND
R1
/SHDN
XTR70021
0.6V
/SHDN
VOUTSNS
VOUTSNS
Cin1
R2
Cout
RL
Cin1
Cout
RL
V
REF
=0.6V
V
REF
=3.33V
V
OUT
=(1+R
1
/R
2
) x V
REF
< V
IN
V
OUT
=3.33V
0 ≤ R
1
≤ 10kΩ
Typical applications with Kelvin connections on load and GND.
ORDERING INFORMATION
X
Source:
X = X-REL Semi
TR
Process:
TR = HiTemp, HiRel
70
Part family
02x
Part number
A
B
C
D
E
F
G
H
I
x
Output voltage
(XTR70022 only)
=
=
=
=
=
=
=
=
=
0.6V
0.8V
0.9V
1.2V
1.8V
2.2V
2.5V
2.8V
3.3V
J
K
L
M
N
O
P
Q
R
=
=
=
=
=
=
=
=
=
5.0V
5.5V
7.5V
8.0V
9.0V
10V
12V
13V
15V
Product Reference
Temperature Range
Package
Pin Count
Marking
XTR70020-BD
-60°C to +230°C
Bare die
XTR70020
XTR70020-TD
-60°C to +230°C
Tested bare die
XTR70020
XTR70021-SH
-60°C to +230°C
Ceramic SOIC with Heat Sink
10
XTR70021
XTR70022x-T
-60°C to +230°C
TO-254
3
XTR70022x
XTR70025-D
-60°C to +230°C
Ceramic side-brazed DIP
8
XTR70025
Other output voltages, packages and packaging configurations possible upon request. For some packages or packaging configu-
rations, MOQ may apply.
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XTR70020
ABSOLUTE MAXIMUM RATINGS
Voltage on VIN, VINPWR and /SHDN to GND
Voltage on any pin to GND
Storage Temperature Range
Operating Junction Temperature Range
ESD Classification
-0.5V to 35V
-0.5V to VIN
-60°C to +230°C
-60°C to +300°C
1kV HBM MIL-STD-883
Caution:
Stresses beyond those listed in “ABSOLUTE MAXIMUM RATINGS” may cause permanent damage to the device. These are
stress ratings only and functionality of the device at these or any other condition beyond those indicated in the operational sections of
the specifications is not implied. Exposure to “ABSOLUTE MAXIMUM RATINGS” conditions for extended periods may permanently
affect device reliability.
PRODUCT VARIANTS
CSOIC10 with Heat Sink
XTR70021-SH
Top view
GND
0.6V
VOUTSNS
VOUT
VOUT
1
10
TO-254
XTR70022x-T
Front view
Side-brazed DIP8
XTR70025-D
Top view
GND
VOUTSNS
VOUT
NC
1
8
/SHDN
VIN
VIN
VINPWR
VINPWR
/SHDN
VIN
VINPWR
NC
2
9
2
7
3
8
3
6
4
7
4
5
5
6
Heat sink (bottom of package)
connected to VIN
1
2
3
1
2
3
BLOCK DIAGRAM
/UVLOEnbl
VIN
GND
VOUT
XTR70020
OCP
UVLO
Oscillator
Charge
Pump
Over
Current
Protection
VINPWR
VIN
/OCPEnbl
VIN
Current-mode
Bandgap
Reference
Control
Logic
Soft Start
Soft Turn-off
/SHDN
OCP
V
REF
VOUT
/TSEnbl
Thermal
Shutdown
1.5 V
REF
Multiplier
VOUTSNS
8V
6.67V
3.33V
2.2V
1.87V
1.67V
0.8V
0.6V
Different functionalities are available depending upon packaging configuration. Grey blocks represent the internal protections.
Arrows aside pad names indicate the input is internally pulled down. Contact X-REL for the Die and Assembly Specifications
document describing functionalities of all pads.
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GND (10V)
2 of 12
/VrefMult
www.x-relsemi.com
XTR70020
PADS DESCRIPTION
Pad Name
0.6V
0.8V
1.67V
1.87V
2.2V
3.33V
6.67V
8V
GND
/SHDN
/VrefMult
VOUTSNS
VOUT
VINPWR
VIN
/TSEnbl
/OCPEnbl
/UVLOEnbl
Connect to GND to set V
REF
=0.6V.
Connect to GND to set V
REF
=0.8V.
Connect to GND to set V
REF
=1.67V.
Connect to GND to set V
REF
=1.87V.
Connect to GND to set V
REF
=2.2V.
Connect to GND to set V
REF
=3.33V.
Connect to GND to set V
REF
=6.67V.
Connect to GND to set V
REF
=8V.
Circuit ground. If no “x.xV” pad connected, default V
REF
is 10V.
Active-low shutdown functionality. Connect to VIN to enable the circuit or to GND to disable it. Do not leave floating (no
internal pull).
Multiplies the reference voltage selected by connecting any of xxV to GND by a factor of “3/2” (1.5). Left floating or con-
nect to VOUTSNS if not used.
DO NEVER CONNECT
to other terminals than GND or VOUTSNS.
Output voltage sense (Kelvin connection). It can be directly connected to VOUT or used to set the output voltage by
means of an external resistive divider.
Output voltage terminal. Decouple to GND with a capacitor of at least 10nF.
Supply voltage of power transistor. Decouple to GND with a capacitor of at least 100nF.
Supply voltage of the internal blocks of the device. Connect directly to VINPWR pin or after a 10-100Ω / 10-100nF low-
pass filter.
Active-low thermal shut-down enable. Internally pulled down.
Active-low over current protection enable. Internally pulled down.
Active-low UVLO enable. Internally pulled down.
Description
V
REF
SETTINGS
The following table is valid for the bare die of XTR70020 and assumes GND is connected to the 0V reference.
Voltage Selection Pads Connected to GND
0.6V
0.6V
0.8V
0.8V
1.67V
1.67V
1.87V
1.87V
2.2V
2.2V
3.33V
3.33V
6.67V
6.67V
8V
8V
-
-
/VrefMult Connection
Floating
GND
Floating
GND
Floating
GND
Floating
GND
Floating
GND
Floating
GND
Floating
GND
Floating
GND
Floating
GND
Equivalent Reference Voltage
0.6V
0.9V
0.8V
1.2V
1.67V
2.5V
1.87V
2.8V
2.2V
3.3V
3.33V
5V
6.67V
10V
8V
12V
10V
15V
When using the reference multiplier feature (/VrefMult is connected to GND) the maximum allowed R2 (see the “Basic
Operation”
section in
page 9) is 10kΩ.
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XTR70020
PIN DESCRIPTION
XTR70021-SH
Pin Number
1
2
3
4
VOUT
5
6
VINPWR
7
8
VIN
9
10
/SHDN
Active-low shut-down terminal. Connect to V
IN
when not used.
Supply voltage terminal.
Supply voltage terminal of power pass transistor.
Output voltage terminal. Decouple to GND with a capacitor of at least 500nF.
Name
GND
0.6V
VOUTSNS
Circuit ground.
Connect to GND to set V
REF
=0.6V.
Output voltage sense. Must be connected close to the load.
Description
The default reference voltage (V
REF
) of XTR70021 is 3.33V. To change the reference voltage V
REF
to 0.6V, connect pin “0.6V” to GND. See
the “Basic
Operation”
section in page 9 for details on how to obtain any output voltage from the XTR70020 based on the internal settings
and external components.
Internal Settings of XTR70021-SH
Internal Pad
3.33V
/VrefMult
/TSEnbl
/OCPEnbl
/UVLOEnbl
Internal Setting
GND
Floating
VIN
GND
GND
Default voltage set to 3.33V.
Reference voltage multiplier disabled.
Thermal shut-down disabled.
Over-current (short-circuit) protection enabled.
Under-voltage lockout (UVLO) enabled.
Description
XTR70022x-T
Pin Number
1
2
3
Name
VIN
GND
VOUT
Supply voltage terminal.
Circuit ground.
Output voltage terminal. Decouple to GND with a capacitor of at least 500nF.
Description
The output voltage (V
OUT
) of XTR70022 devices is set during the assembly of the parts. See the “Ordering
Information”
section to determine
the part number corresponding to the needed output voltage in your application.
Internal Settings of XTR70022x-T
Internal Pad
xxV
/TSEnbl
/OCPEnbl
/UVLOEnbl
Internal Setting
GND
VIN
GND
GND
Description
Depends upon chosen part reference variant (A, B, C…).
Thermal shut-down disabled.
Over-current (short-circuit) protection enabled.
Under-voltage lockout (UVLO) enabled.
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XTR70020
XTR70025-D
Pin Number
1
2
3
4
5
6
7
8
Name
GND
VOUTSNS
VOUT
N.C.
N.C.
VINPWR
VIN
/SHDN
Circuit ground.
Output voltage sense. Must be connected close to the load.
Output voltage terminal. Decouple to GND with a capacitor of at least 500nF.
No internal connection.
No internal connection.
Supply voltage terminal of power pass transistor.
Supply voltage terminal.
Active-low shut-down terminal. Connect to V
IN
when not used.
Description
The default reference voltage (V
REF
) of XTR70025 is 0.6V. See the “Basic
Operation”
section in page 9 for details on how to obtain any
output voltage from the XTR70020 based on the internal settings and external components.
Internal Settings of XTR70025-D
Internal Pad
0.6V
/VrefMult
/TSEnbl
/OCPEnbl
/UVLOEnbl
Internal Setting
GND
Floating
GND
GND
GND
Default reference voltage set to 0.6V.
Reference voltage multiplier disabled.
Thermal shut-down enabled.
Over-current (short-circuit) protection enabled.
Under-voltage lockout (UVLO) enabled.
Description
THERMAL CHARACTERISTICS
Parameter
XTR70021-SH
Thermal Resistance: J-C
R
Th_J-C
Thermal Resistance: J-A
R
Th_J-A
XTR70022-T
Thermal Resistance: J-C
R
Th_J-C
Thermal Resistance: J-A
R
Th_J-A
XTR70025-D
Thermal Resistance: J-C
R
Th_J-C
Thermal Resistance: J-A
R
Th_J-A
Condition
Min
Typ
Max
Units
Measured on ePAD.
ePAD thermally connected to 3cm² PCB copper.
4
70
°C/W
°C/W
Measure on back of package.
Still air.
5
50
°C/W
°C/W
25
100
°C/W
°C/W
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply voltage
V
IN
Load capacitance
C
Load
Recommended input
coupling capacitor
C
dec
Load current
I
Load
Junction Temperature
1
T
j
1
Min
3.0
0.5
de-
Typ
Max
30
50
Units
V
µF
µF
1
100µ
-60
2
230
A
°C
Operation beyond the specified temperature range is achieved.
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