ZXTR2105F
60V INPUT, 5V 15mA REGULATOR TRANSISTOR
Description
The ZXTR2105F monolithically integrates a transistor, zener diode
and resistor to function as a linear regulator. The device regulates
with a 5V nominal output at 15mA. It is designed for use in high-
voltage applications where standard linear regulators cannot be used.
This function is fully integrated into a SOT23 package, minimizing
PCB area and reducing the number of components when compared
with a multi-chip discrete solution.
Features
Series Linear Regulator Using Emitter-Follower Stage
Input Voltage = 7V to 60V (For regulated output Voltage)
Output Voltage = 5V ± 5%
Fully Integrated into a SOT23 Package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Qualified to AEC-Q101 Standards for High Reliability
An Automotive-Compliant Part is Available Under Separate
Datasheet (ZXTR2105FQ)
Applications
Supply voltage regulation for:
12V to 5V Rails
24V to 5V Rails
Other Customized Input Rails
Mechanical Data
Case: SOT23
Case Material: Molded Plastic ―Green‖ Molding Compound;
UL Flammability Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: Finish - Matte Tin Plated Leads; Solderable per MIL-
STD-202, Method 208
Weight: 0.008 grams (Approximate)
SOT23
ZXTR2105F
V
IN
Pin Name
V
IN
GND
V
OUT
GND
V
OUT
Pin Function
Input Supply
Power Ground
Voltage Output
Top View
Internal Device
Schematic
Top View
Pin-Out
Ordering Information
(Note 5)
Product
ZXTR2105F-7
Notes:
Compliance
AEC-Q101
Marking
2T1
Reel Size (inches)
7
Tape Width (mm)
8
Quantity per Reel
3,000
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.htmlfor 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.
4. For packaging details, go to our website at https://www.diodes.com/design/support/packaging/diodes-packaging/.
Marking Information
SOT23
2T1
2T1 = Product Type Marking Code
ZXTR2105F
Document number: DS37244 Rev.6 - 2
1 of 7
www.diodes.com
May 2017
© Diodes Incorporated
ZXTR2105F
Absolute Maximum Ratings
(Voltage relative to GND, @T
A
= +25° unless otherwise specified.)
C,
Characteristic
Input Voltage
Continuous Input and Output Current
Peak Pulsed Input and Output Current
Maximum Voltage Applied to V
OUT
Symbol
V
IN
I
IN,
I
OUT
I
IM
, I
OM
V
OUT(MAX)
Value
-0.3 to 60
320
2
Smaller of V
IN
+5V or 10V
Unit
V
mA
A
V
Maximum Current at V
IN
= 12V
(@T
A
= +25° unless otherwise specified.)
C,
Characteristic
Continuous Output Current
Pulsed Output Current
(Note 7)
(Note 8)
(Note 9)
Symbol
I
OUT
I
OM
Value
89
2,000
890
Unit
mA
mA
Thermal Characteristics
Characteristic
(Note 5)
(Note 6)
(Note 5)
Thermal Resistance, Junction to Ambient
(Note 6)
Thermal Resistance, Junction to Lead
(Note 10)
Thermal Resistance, Junction to Case
(Note 10)
Maximum Operating Junction and Storage Temperature Range
Power Dissipation
Symbol
P
D
R
JA
R
JL
R
JC
T
J,
T
STG
Value
625
500
200
250
197
17
-65 to +150
Unit
mW
°
C/W
°
C
ESD Ratings
(Note 11)
Characteristics
Electrostatic Discharge – Human Body Model
Electrostatic Discharge – Machine Model
Notes:
Symbols
ESD HBM
ESD MM
Value
4,000
400
Unit
V
V
JEDEC Class
3A
C
5. For a device mounted with the V
IN
lead on 25mm x 25mm 1oz copper that is on a single-sided 1.6mm FR-4 PCB; device is measured under still air
conditions whilst operating in steady-state.
6. Same as Note 5, except mounted on 15mm x 15mm 1oz copper.
7. Same as Note 5, whilst operating at V
IN
=12V. Refer to Safe Operating Area for other Input Voltages.
8. Same as Note 5, except measured with a single pulse width = 100µs and V
IN
=12V.
9. Same as Note 5, except measured with a single pulse width = 10ms and V
IN
=12V.
10. R
JL
= Thermal resistance from junction to solder-point (at the end of the V
IN
lead). R
JC
= Thermal resistance from junction to the top of case.
11. Refer to JEDEC specification JESD22-A114 and JESD22-A115.
ZXTR2105F
Document number: DS37244 Rev.6 - 2
2 of 7
www.diodes.com
May 2017
© Diodes Incorporated
ZXTR2105F
Thermal Characteristics and Derating Information
Max Power Dissipation (W)
0.75
100
Steady state D.C.
o
T
A
= 25 C
Load Current (mA)
0.50
25mm x 25mm
1oz Cu
25mm x 25mm
1oz Cu
10
15mm x 15mm
1oz Cu
0.25
15mm x 15mm
1oz Cu
0.00
0
50
o
1
100
150
7 10
20
30
40
50
60
Temperature ( C)
Input Voltage (V)
Derating Curve
Thermal Resistance ( C/W)
Max Power Dissipation (W)
300
250
200
150
100
50
0
100μ
D=0.1
D=0.5
D=0.2
Single Pulse
D=0.05
15mm x 15mm
1oz Cu
Safe Operating Area
100
Single Pulse
o
T
A
=25 C
o
10
15mm x 15mm
1oz Cu
1
1m
10m 100m
1
10
100
1k
0.1
100μ
1m
10m 100m
1
10
100
1k
Pulse Width (s)
Pulse Width (s)
Transient Thermal Impedance
Thermal Resistance ( C/W)
Max Power Dissipation (W)
300
250
200
150
100
D=0.2
Single Pulse
D=0.05
D=0.1
D=0.5
25mm x 25mm
1oz Cu
Pulse Power Dissipation
100
Single Pulse
o
T
A
= 25 C
o
10
25mm x 25mm
1oz Cu
1
50
0
100μ
1m
10m 100m
1
10
100
1k
0.1
100μ
1m
10m 100m
1
10
100
1k
Pulse Width (s)
Pulse Width (s)
Transient Thermal Impedance
Pulse Power Dissipation
ZXTR2105F
Document number: DS37244 Rev.6 - 2
3 of 7
www.diodes.com
May 2017
© Diodes Incorporated
ZXTR2105F
Electrical Characteristics
Characteristic
Output Voltage (Note 12)
Line Regulation (Notes 12 & 13)
(@T
A
= +25° unless otherwise specified.)
C,
Symbol
V
OUT
V
OUT
Min
4.75
—
—
—
Temperature Coefficient
Load Regulation (Notes 12 & 14)
Minimum Value of Input Voltage Required to
Maintain Line Regulation
Quiescent Current
Power Supply Rejection Ratio
Notes:
Typ
5.0
33
400
145
3.52
-20
-166
—
450
4,000
46
Max
5.25
220
700
400
—
-130
-300
—
800
6,700
—
Unit
V
mV
Test Condition
V
IN
= 12V, I
OUT
= 15mA
V
IN
= 10V to 15V, I
OUT
= 15mA
V
IN
= 7V to 60V, I
OUT
= 15mA
V
IN
= 10V to 60V, I
OUT
= 15mA
T
J
= -40° to +150°
C
C
V
IN
= 12V, I
OUT
= 15mA
I
OUT
= 10mA to 20mA, V
IN
= 12V
I
OUT
= 0.1mA to 50mA, V
IN
= 12V
—
V
IN
= 12V, I
OUT
= 10µA
V
IN
= 60V, I
OUT
= 10µA
C
OUT
= 100nF, I
OUT
= 15mA,
V
OUT
= 5V, V
IN
= 7V to 60V,f = 100Hz
V
OUT
/T
V
OUT
V
IN(MIN)
I
Q
V
IN
/V
OUT
—
—
7
—
—
—
mV/°
C
mV
V
µA
dB
12. Measured Under Pulsed Conditions; Pulse Width
≤
300μs. Duty cycle
≤
2%.
13. Line Regulation
V
OUT
= V
OUT
(@V
IN
= 15V) – V
OUT
(@V
IN
= 10V)
V
OUT
= V
OUT
(@V
IN
= 60V) – V
OUT
(@V
IN
= 7V)
V
OUT
= V
OUT
(@V
IN
= 60V) – V
OUT
(@V
IN
= 10V)
14. Load Regulation
V
OUT
= V
OUT
(@I
OUT
= 20mA) – V
OUT
(@I
OUT
= 10mA)
V
OUT
=V
OUT
(@I
OUT
= 50mA) – V
OUT
(@I
OUT
= 0.1mA)
Typical Application Circuit
ZXTR2105F
Pin Functions
Pin Name
V
IN
GND
Pin Function
Input Supply
Power Ground
Notes
Input voltage can vary from -0.3V to 60V with respect to GND; for V
OUT
regulated then 7V ≤ V
IN
≤ 60V. It is
recommended to connect a 1µF capacitor to GND.
This pin should be tied to the system ground.
Outputs a regulated 5V when 7V ≤ V
IN
≤ 60V. When V
IN
< 7V, then V
OUT
maximum = V
IN
– 1V.
The pin can be pulled high to a maximum of +10V with respect to GND, or +5V with respect to V
IN
,
whichever is lower. It is recommended to connect a 10µF capacitor to GND and a minimum of 10µA to be
drawn from V
OUT
to maintain regulation.
V
OUT
Voltage Output
ZXTR2105F
Document number: DS37244 Rev.6 - 2
4 of 7
www.diodes.com
May 2017
© Diodes Incorporated
ZXTR2105F
Typical Electrical Characteristics
(@T
A
= +25° unless otherwise specified.)
C,
80
70
V
OUT
V
OUT
Output Voltage (V)
V
IN
Input Voltage (V)
60
50
40
30
20
10
0
0.0
10.0µ
V
IN
V
IN
=8 to 40V
I
OUT
= 15mA
Slew Rate=5V/uS
C
OUT
= 100nF
5.2
5.0
4.8
4.6
4.4
4.2
4.0
3.8
5.8
5.6
5.4
5.2
5.0
4.8
4.6
4.4
4.2
4.0
0.0
I
OUT
V
OUT
I
OUT
= 0 to 30mA
Slew Rate=1A/uS
C
OUT
= 100nF
V
IN
=12V
80
60
40
20
0
160.0µ
3.6
20.0µ
40.0µ
80.0µ
120.0µ
Time(s)
Time(s)
Line transient response
900
800
700
600
500
400
300
200
100
0
-100
-200
7 10
Load transient response
V
OUT
Output Voltage (mV)
600
V
IN
= 12V
V
OUT
Output Voltage (mV)
400
200
0
T
J
= 150°
C
T
J
= 100°
C
T
J
= 85°
C
T
J
= 150°
C
T
J
= 100°
C
T
J
= 85°
C
T
J
= 25°
C
T
J
= -40°
C
T
J
= 25°
C
T
J
= -40°
C
-200
-400
.1
10
20
30
40
50
I
OUT
= 15mA
20
30
40
50
60
V
IN
Input Voltage (V)
I
OUT
Output Current (mA)
Line Regulation (Note 15)
V
OUT
Output Voltage (mV)
600
Load Regulation (Note 16)
I
Q
Quiescent Current (
A)
V
IN
= 12V
4000
3000
2000
1000
0
10
T
J
= 150°
C
I
OUT
= 10µA
T
J
= 100°
C
T
J
= 85°
C
T
J
= 25°
C
T
J
= -40°
C
400
200
0
I
OUT
= 15mA
-200
-400
-40 -25
0
25
50
75
100
125
150
20
30
40
50
60
Junction temperature (°
C)
V
IN
Input Voltage (V)
Temperature Coefficient (Note 17)
Quiescent Current
Notes:
15. Line Regulation ∆V
OUT
= V
OUT
– V
OUT
(@ V
IN
= 7V, I
OUT
= 15mA, T
J
= +25°
C).
16. Load Regulation ∆V
OUT
= V
OUT
– V
OUT
(@ V
IN
= 12V, I
OUT
= 0.1mA, T
J
= +25°
C).
17. Temperature Coefficient ∆V
OUT
= V
OUT
– V
OUT
(@ V
IN
= 12V, I
OUT
= 15mA, T
J
= +25°
C).
ZXTR2105F
Document number: DS37244 Rev.6 - 2
5 of 7
www.diodes.com
© Diodes Incorporated
I
OUT
Output Current (mA)
May 2017
5.4
6.0
100
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