OPTIREG™ linear TLE4253
High precision voltage tracker
Features
•
Tight output tracking tolerance to reference
•
Output voltage adjust down to 2.0 V
•
Stable with ceramic output capacitor
•
Flexibility of output voltage adjust higher or lower than reference,
proportional to the reference voltage
•
250 mA output current capability
•
Low dropout voltage
•
Combined tracking / enable input
•
Very low current consumption in OFF mode
•
PG-DSO-8 packages with lowest thermal resistance
•
Wide input voltage range -42 V ≤ VI ≤ 45 V
•
Wide temperature range: -40°C ≤ Tj ≤ 150°C
•
Output protected against short circuit to GND and battery
•
Overtemperature protection
•
Reverse polarity proof
•
Suitable for use in automotive electronics
•
Green product (RoHS compliant)
Potential applications
•
General automotive applications.
Product validation
Qualified for automotive applications. Product validation according to AEC-Q100.
Description
The OPTIREG™ linear TLE4253 is a monolithic integrated low-dropout voltage tracking regulator in small PGDSO-8 packages. The exposed pad (EP) package variant PG-DSO-8 exposed pad offers extremely low thermal
resistance. The IC is designed to supply off-board systems, e. g. sensors in engine management systems under
the severe conditions of automotive applications. Therefore, the IC is equipped with additional protection
functions against reverse polarity and short circuit to GND and battery.
Datasheet
www.infineon.com/OPTIREG-linear
1
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
With supply voltages up to 40 V, the output voltage follows a reference voltage applied at the adjust input with
high accuracy. The reference voltage applied directly to the adjust input or by an e. g. external resistor divider
can be 2.0 V at minimum.
The output is able to drive loads up to 250 mA at minimum while the device follows the e. g. 5 V output of a
main voltage regulator acting as reference with high accuracy.
The TLE4253 tracker can be set into shutdown mode in order to reduce the quiescent current to an extremely
low value. This makes the IC suitable to low power battery applications.
Type
Package
Marking
TLE4253GS
PG-DSO-8
4253
TLE4253E
PG-DSO-8 exposed pad
4253E
Datasheet
2
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Table of contents
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Potential applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Product validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
2.1
2.2
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
3.1
3.2
3.3
General product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
4.1
4.2
4.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Tracking regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Adjust / enable input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6
Package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Datasheet
3
6
6
7
8
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Block diagram
1
Block diagram
Saturation
Control and
Protection
circuits
Temperature
control
I
Q
-
TLE4253
FB
+
EN/
ADJ
+
typ.
1.4V
=
GND
Figure 1
Datasheet
Block diagram
4
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Pin configuration
2
Pin configuration
2.1
Pin assignment
Q
1
8
I
GND
2
7
GND
3
FB
4
TLE4253GS
Q
1
8
I
GND
n. c.
2
7
n. c.
6
GND
n. c.
3
6
GND
5
EN/ADJ
FB
4
5
EN/ADJ
Figure 2
Pin configuration and block diagram
2.2
Pin definitions and functions
TLE4253E
Pin
Symbol
Function
1
Q
Tracker output.
Block to GND with a capacitor close to the IC terminals, respecting capacitance and
ESR requirements given in the table “Functional Range”.
2, 3, 6, 7
GND
Ground reference (version TLE4253GS only).
Interconnect the pins on PCB. Connect to heatsink area.
6
GND
Ground (version TLE4253E only).
Connect to exposed pad.
2, 3, 7
n. c.
Not connected (version TLE4253E only).
Connect to GND externally.
4
FB
Feedback input for tracker.
Inverting input of the internal error amplifier to control the output voltage.
Connect this pin directly to the output pin in order to obtain lower or equal output
voltages with respect to the reference voltage and connect a voltage divider for
higher output voltages than the reference (see application information).
5
EN/ADJ
Adjust / enable.
Connect the reference to this pin. The active high signal of the reference turns on the
device, with active low the tracker is disabled. The reference voltage can be
connected directly or by a voltage divider for lower output voltages (see application
information).
8
I
Input.
IC supply. For compensating line influences, a capacitor close to the IC terminals is
recommended.
–
EP
Exposed pad (version TLE4253E only).
Attach the exposed pad on package bottom to the heatsink area on circuit board.
Connect to GND.
Datasheet
5
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
General product characteristics
3
General product characteristics
3.1
Absolute maximum ratings
Table 1
Absolute maximum ratings 1)
Tj = -40°C to 150°C; all voltages with respect to ground (unless otherwise specified).
Parameter
Symbol
Values
Min.
Typ.
Max.
Unit Note or
Number
Test Condition
Voltages
Input voltage
VI
-42
–
45
V
–
P_4.1.1
Output voltage
VQ
-2
–
45
V
–
P_4.1.2
Adjust / enable input
VADJ/EN
-42
–
45
V
–
P_4.1.3
Feedback input
VFB
-42
–
45
V
–
P_4.1.4
Junction temperature
Tj
-40
–
150
°C
–
P_4.1.5
Storage temperature
Tstg
-50
–
150
°C
–
P_4.1.6
–
4
kV
HBM2)
P_4.1.7
kV
3)
P_4.1.8
Temperature
ESD rating
ESD susceptibility
VESD,HBM -4
VESD,CDM -1
–
1
CDM
1) Not subject to production test, specified by design.
2) ESD susceptibility Human Body Model “HBM” according to EIA/JESD 22-A 114B.
3) ESD susceptibility Charged Device Model “CDM” according to EIA/JESD22-C101 or ESDA STM5.3.1.
Notes
1. Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
2. Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Datasheet
6
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
General product characteristics
3.2
Functional range
Table 2
Functional range
Parameter
Symbol
Values
Min.
Typ.
Max.
Unit
Note or
Test Condition
Number
Input voltage
VI
3.5
–
40
V
VI ≥ VQ + Vdr
P_4.2.1
Adjust / enable input voltage
(voltage tracking range)
VADJ/EN
2.0
–
–
V
–
P_4.2.5
Junction temperature
Tj
-40
–
150
°C
–
P_4.2.2
Output capacitor requirements
CQ
10
–
–
µF
1)
P_4.2.3
Ω
2)
P_4.2.4
ESRCQ
–
–
5
1) The minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30%.
2) Relevant ESR value at f = 10 kHz.
Note:
Datasheet
Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics
table.
7
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
General product characteristics
3.3
Thermal resistance
Table 3
Thermal resistance
Parameter
Symbol
Values
Min.
Typ.
Max.
Unit
Note or
Test Condition
Number
PG-DSO-8
Junction to soldering point
RthJSP
–
39
–
K/W
Pins 2 - 3 and 6 - 7 P_4.3.1
fixed to TA
Junction to ambient
RthJA
–
150
–
K/W
Footprint only 1)
P_4.3.2
–
–
91
–
K/W
300 mm2 PCB
heatsink area 1)
P_4.3.3
–
–
81
–
K/W
600 mm2 PCB
heatsink area 1)
P_4.3.4
–
–
65
–
K/W
2s2p board2)
P_4.3.5
Junction to case bottom
RthJC
–
9
–
K/W
Measured to
exposed bottom
pad
P_4.3.6
Junction to ambient
RthJA
–
169
–
K/W
Footprint only 1)
P_4.3.7
2
PG-DSO-8 exposed pad
–
–
64
–
K/W
300 mm PCB
heatsink area 1)
P_4.3.8
–
–
55
–
K/W
600 mm2 PCB
heatsink area 1)
P_4.3.9
–
–
49
–
K/W
2s2p board2)
P_4.3.10
1) Package mounted on PCB FR4; 80 × 80 × 1.5 mm3; 35 µm Cu, 5 µm Sn; horizontal position; zero airflow.
Not subject to production test; specified by design.
2) Specified RthJA value is according to JESD51-2,-5,-7 at natural convection on FR4 2s2p board. The product
(chip+package) was simulated on a 76.2 × 114.3 × 1.5 mm3 board with 2 inner copper layers (2 × 70 µm Cu,
2 × 35 µm Cu).
Where applicable a thermal via array under the package contacted the first inner copper layer.
Datasheet
8
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Electrical characteristics
4
Electrical characteristics
4.1
Tracking regulator
The output voltage VQ is controlled by comparing it to the voltage applied at pin ADJ/EN and driving a PNP
pass transistor accordingly. The control loop stability depends on the output capacitor CQ, the load current,
the chip temperature and the poles/zeros introduced by the integrated circuit. To ensure stable operation, the
output capacitor’s capacitance and its equivalent series resistor ESR requirements given in the table
“Functional Range” have to be maintained. For details see also the typical performance graph “Output
Capacitor Series Resistor ESRCQ vs. Output Current IQ”. Also, the output capacitor shall be sized to buffer load
transients.
An input capacitor CI is strongly recommended to buffer line influences. Connect the capacitors close to the IC
terminals.
Protection circuitry prevent the IC as well as the application from destruction in case of catastrophic events.
These safeguards contain output current limitation, reverse polarity protection as well as thermal shutdown
in case of overtemperature.
In order to avoid excessive power dissipation that could never be handled by the pass element and the
package, the maximum output current is decreased at high input voltages.
An overtemperature protection circuit prevents the IC from immediate destruction under fault conditions
(e. g. output continuously short-circuited to GND) by reducing the output current. A thermal balance below
200°C junction temperature is established. Please note that a junction temperature above 150°C is outside the
maximum ratings and reduces the IC lifetime.
The TLE4253 allows a negative supply voltage. However, several small currents are flowing into the IC. For
details see electrical characteristics table and typical performance graph. The thermal protection circuit is not
operating during reverse polarity condition.
Datasheet
9
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Electrical characteristics
Table 4
Electrical characteristics tracking regulator
VI = 13.5 V; VADJ/EN ≥ 2.0 V; VFB = VQ; Tj = -40°C to 150°C;
all voltages with respect to ground (unless otherwise specified).
Parameter
Symbol
Min.
Typ.
Max.
Unit Note or
Test Condition
-5
–
5
mV
IQ = 30 mA;
VADJ/EN = 5 V
–
-10
–
10
mV
0.1 mA ≤ IQ ≤ 200 mA; P_5.1.2
3.5 V ≤ VI ≤ 32 V
VADJ/EN = 2 V
–
-15
–
15
mV
0.1 mA ≤ IQ ≤ 250 mA; P_5.1.3
9 V ≤ VI ≤ 32 V
VADJ/EN = 5 V
Output voltage tracking accuracy ∆VQ
∆VQ = VEN/ADJ - VQ
Values
Number
P_5.1.1
Load regulation
steady-state
|∆VQ,load| –
–
10
mV
0.1 mA ≤ IQ ≤ 200 mA; P_5.1.4
VADJ/EN = 5 V
Line regulation
steady-state
|∆VQ,line| –
–
10
mV
VI = 6 V to 32 V;
IQ = 10 mA
VADJ/EN = 5 V
P_5.1.5
Power supply ripple rejection
PSRR
60
–
–
dB
fripple = 100 Hz;
Vripple = 1 Vpp
CQ = 10 µF, ceramic
type 1)
P_5.1.6
Dropout voltage
Vdr = VI - VQ
Vdr
–
280
600
mV
IQ = 200 mA 2)
P_5.1.7
Output current limitation
IQ,max
251
400
600
mA
VQ = (VADJ - 0.1 V);
VADJ/EN = 5 V
P_5.1.8
Reverse current
IQ
-10
-5.5
–
mA
VI = 0 V;
VQ = 16 V;
VADJ/EN = 5 V
P_5.1.9
Reverse current
at negative input voltage
II
-5
-2
–
mA
VI = -16 V;
VQ = 0 V;
VADJ/EN = 5 V
P_5.1.10
IFB
–
0.1
0.5
µA
VFB = 5 V
P_5.1.11
Tj,eq
151
–
200
°C
Tj increasing due to
power dissipation
generated by the IC1)
P_5.1.12
Feedback input FB
Feedback input biasing current
Overtemperature protection
Junction temperature
equilibrium
1) Parameter not subject to production test; specified by design.
2) Measured when the output voltage VQ has dropped 100 mV from its nominal value.
Datasheet
10
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Electrical characteristics
Typical performance characteristics tracking regulator
VADJ/EN = 5 V; VFB = VQ (unless otherwise noted)
Output voltage VQ vs.
adjust voltage VADJ
Output voltage VQ vs.
input voltage VI
VQ-VI.vsdx
VQ-VADJ.vsdx
VQ [V]
VQ [V]
VI = 13.5 V
Vdr
5
4
4
3
3
VADJ = 5 V
2
2
Tj = 150 °C
Tj = -40 °C
Tj = -40 °C
1
1
Tj = 150 °C
1
2
3
1
4
3
5
7
VI [V]
VADJ [V]
Output current limitation IQ,max vs.
input voltage VI
Output current limitation IQ,max vs.
output voltage VQ
SOA.VSDX
600
IQmax-VQ.vsdx
VI = 13.5 V
VADJ = 5 V
IQ [mA]
Tj = 25 °C
5
VQ [V]
Tj = 125 °C
400
Tj = 25°C
300
3
Tj = 125°C
VADJ = 5 V
200
2
100
1
0
10
20
30
0
40
VI [V]
Datasheet
200
300
400
IQ [mA]
11
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Electrical characteristics
Typical performance characteristics tracking regulator
VADJ/EN = 5 V; VFB = VQ (unless otherwise noted)
Output capacitor series resistor ESRCQ vs.
output current IQ
Output capacitor series resistor ESRCQ vs.
output current IQ
ESR-IQ_10u.vsdx
10
ESRCQ
ESRCQ
[Ω]
[Ω]
Stable
Region
1
ESR-IQ_6u8.vsdx
10
Stable
Region
1
0.1
0.1
CQ = 6.8 μF
6 V < VI < 28 V
-40 °C < Tj < 150 °C
CQ = 10 μF
6 V < VI < 28 V
-40 °C < Tj < 150 °C
0.01
0
50
100
150
0.01
200
0
50
100
150
200
IQ [mA]
IQ [mA]
Line regulation dVQ,line vs.
input voltage change dVI
Power supply
ripple rejection PSRR
PSRR.vsdx
90
dVQ-dVI.vsdx
2
PSRR
∆VQ [mV]
[dB]
VI,initial = 6 V
VADJ = 5 V
IQ = 10 mA
IQ = 1 mA
70
0
60
-1
IQ = 100 mA
50
40
0.01
VRIPPLE = 1 V
VIN = 13.5 V
CQ = 10 μF Ceramic
Tj = 25 °C
0.1
1
-3
steady-state condition
10
0
100
f [kHz]
Datasheet
IQ = 100 mA
-2
0
5
10 15 20 25 30 35
∆VI [V]
12
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Electrical characteristics
Typical performance characteristics tracking regulator
VADJ/EN = 5 V; VFB = VQ (unless otherwise noted)
Tracking accuracy ∆VQ vs.
junction temperature Tj
Load regulation dVQ,line vs.
output current change dIQ
dVQ-dIQ.vsdx
dVQ-Tj.vsdx
∆VQ
∆VQ [mV]
[mV]
IQ,initial = 0 mA
VADJ = 5 V
IQ = 0.1 mA
2
0
Tj = 25 °C
0
-1
IQ = 200 mA
-2
-2
Tj = 125 °C
-4
-3
steady-state condition
0
50
100
150
-40 -20
200
0
20 40 60 80 100 120 140
Tj [°C]
∆IQ [mA]
Line transient response
Load transient response
dIQresponse.vsdx
dVI-reponse.vsdx
∆VQ
[mV]
125
∆VQ
50
[mV]
0
0
-25
IQ = 5 mA
CQ = 10 μF Ceramic
VI
VI = 13.5 V
VADJ = 5 V
CQ = 10 μF
IQ
[mA]
[V]
16
100
9
10
0
40
80
100
0
120
100
150
200
t [μs]
t [μs]
Datasheet
50
13
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Electrical characteristics
Typical performance characteristics tracking regulator
VADJ/EN = 5 V; VFB = VQ (unless otherwise noted)
Dropout voltage Vdr vs.
junction temperature Tj
Dropout voltage Vdr vs.
output current IQ
Vdr-IQ_log.vsdx
Vdr-Tj.vsdx
600
Vdr [mV]
Vdr [mV]
1000
IQ = 200 mA
400
100
300
Tj = 150 °C
200
Tj = 25 °C
10
100
0.2
1
-40 -20
100
10
0
20 40 60 80 100 120 140
Tj [°C]
IQ [mA]
Reverse current II vs.
input voltage VI
Reverse output current IQ vs.
output voltage VQ
II-VI.vsdx
+1
II [mA]
IQ [mA]
VQ = 0 V
VADJ = 5 V
Tj = 25 °C
-2
VI = 0 V
VADJ = 5 V
-4
Tj = 150 °C
-4
IQ-VQ.vsdx
+2
Tj = 25 °C
-8
-6
-12
Tj = 150 °C
-8
-16
-32
-24
-16
0
-8
0
VI [V]
Datasheet
8
16
24
32
VQ [V]
14
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Electrical characteristics
4.2
Current consumption
Table 5
Electrical characteristics current consumption
VI = 13.5 V; VADJ/EN ≥ 2.0 V; VFB = VQ; Tj = -40°C to 150°C;
all voltages with respect to ground (unless otherwise specified).
Parameter
Symbol
Values
Min.
Typ.
Max.
Unit
Note or
Test Condition
Number
Quiescent current
stand-by mode
Iq1
–
0
2
µA
VQ = 0 V;
VADJ/EN ≤ 0.4 V;
Tj ≤ 85°C
P_5.2.1
Current consumption
Iq = II - IQ
Iq2
–
120
150
µA
IQ ≤ 100 µA;
VADJ/EN = 5 V;
Tj ≤ 85°C
P_5.2.2
–
–
7
15
mA
IQ ≤ 200 mA;
VADJ/EN = 5 V
P_5.2.3
Iq3
–
1
3
mA
VADJ = VI = 5 V;
IQ = 0 mA
P_5.2.4
Current consumption
dropout region; Iq = II - IQ
Datasheet
15
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Electrical characteristics
Typical performance characteristics tracking regulator
VADJ/EN = 5 V; VFB = VQ (unless otherwise noted)
Current consumption Iq vs.
output current IQ
Current consumption Iq2 vs.
junction temperature Tj
Iq2-Tj.vsdx
Iq-IQ.vsdx
Iq [mA]
Iq [mA]
VI = 13.5V
IQ = 200 mA
10
VEN/ADJ = 5 V
10
VI = 6 V
1
1
VI > 9 V
IQ = 200 μA
0.1
0.1
0.01
-40 -20
0
0.01
0.2
20 40 60 80 100 120 140
1
10
Tj [°C]
Current consumption Iq vs.
input voltageVI
IQ [mA]
Quiescent current Iq1 vs.
junction temperature Tj
Iq1-Tj.vsdx
Iq-VI.vsdx
30
Iq1 [μA]
25
VI = 13.5V
VEN/ADJ = 0 V
RLOAD = 25 Ω
RLOAD = 50 Ω
RLOAD = 100 Ω
RLOAD = 500 Ω
20
I q [mA]
100
15
1
10
5
0
0
10
20
30
0.1
-40 -20
40
Datasheet
0
20 40 60 80 100 120 140
Tj [°C]
V I [V]
16
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Electrical characteristics
4.3
Adjust / enable input
In order to reduce the quiescent current to a minimum, the TLE4253 can be switched to stand-by mode by
setting the adjust/enable input “ADJ/EN” to “low”.
In case the pin “ADJ/EN” is left open, an internal pull-down resistor keeps the voltage at the pin low and
therefore ensures that the regulator is switched off.
Table 6
Electrical characteristics adjust / enable
VI = 13.5 V; VADJ/EN ≥ 2.0 V; VFB = VQ; Tj = -40°C to 150°C;
all voltages with respect to ground (unless otherwise specified).
Parameter
Symbol
Values
Min.
Typ.
Max.
Unit
Note or
Test Condition
Number
P_5.3.1
Adjust / enable
low signal valid
VADJ/EN,low
–
–
0.4
V
VQ = 0 V;
II < 2 µA;
Tj ≤ 85°C
Adjust / enable
high signal valid
(tracking region)
VADJ/EN,high 2
–
–
V
VQ settled:
P_5.3.2
|VQ - VADJ/EN| < 10 mV;
IQ = 10 mA
Adjust / enable
input current
IADJ/EN
–
3.8
5.5
µA
VADJ/EN = 5 V;
P_5.3.3
Adjust / enable
internal pull-down resistor
RADJ/EN
1
1.5
2
MΩ
–
P_5.3.4
Typical performance characteristics tracking regulator
VADJ/EN = 5 V; VFB = VQ (unless otherwise noted)
Startup sequence
4253_startup.vsdx
V [V]
Overshoot depends on
load current, CQ, ESR(CQ)
VADJ
4
3
2
dVQ / dt =
(IQ,max-ILoad) / CQ
1
0
20 40 60 80 100 120 140
t [μs]
Datasheet
17
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Application information
5
Application information
Note:
The following information is given as a hint for the implementation of the device only and shall not
be regarded as a description or warranty of a certain functionality, condition or quality of the device.
The application circuits shown are simplified examples. The function must be verified in the real
application.
μC, e.g. C167
VBAT
Main μC supply, e.g.
TLE4271-2
I
Q
TLE4278
TLE4470
etc.
GND
VDD
I/O
VREF
5
EN/
ADJ
Q
1
e.g. off board
supply, sensors
TLE4253
8
I
FB
4
GND
2, 3, 6, 7
Figure 3
Application circuit: Output voltage VQ equal to reference voltage VREF
Figure 3 shows the typical schematic for applications where the tracker output voltage equals the reference
voltage VREF applied to the pin “EN/ADJ”. The pin “FB” is connected directly to the output. The reference
voltage is directly applied “EN/ADJ”.
Datasheet
18
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Application information
μC, e.g. C167
VBAT
Main μC supply, e.g.
TLE4271-2
I
Q
TLE4278
TLE4470
etc.
GND
VDD
I/O
VREF
R1ADJ
5
EN/
ADJ
R2ADJ
Q
1
VQ < VREF
TLE4253
8
FB
I
4
GND
2, 3, 6, 7
Figure 4
Application circuit: Output voltage VQ lower than reference voltage VREF
In order to obtain a lower output voltage VQ at the tracker output than the reference voltage VREF, a voltage
divider according to Figure 4 has to be used. The output voltage VQ then calculates:
(5.1)
With a given reference voltage VREF, the desired output voltage VQ and the resistor value R1ADJ, the resistor
value for R2ADJ is given by:
(5.2)
Taking into consideration also the effect of the internal EN/ADJ pull-down resistor, the external resistor
divider’s R2ADJ has to be selected to:
(5.3)
Datasheet
19
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Application information
μC, e.g. C167
VBAT
Main μC supply, e.g.
TLE4271-2
I
Q
TLE4278
TLE4470
etc.
GND
VDD
I/O
VREF
5
EN/
ADJ
Q
TLE4253
8
I
R1FB
FB
GND
VQ > VREF
1
4
R2FB
2, 3, 6, 7
Figure 5
Application circuit: Output voltage VQ higher than reference voltage VREF
For output voltages higher than the reference voltage, the voltage divider has to be applied between the
feedback and the output according to Figure 5. The equation for the output voltage with respect to the
reference voltage is given by:
(5.4)
Keep in mind that the input voltage has to be at minimum equal to the output voltage plus the dropout voltage
of the regulator.
With a given reference voltage VREF, the desired output voltage VQ and the resistor value R1FB, the resistor value
for R2FB is given by:
(5.5)
Datasheet
20
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Package outlines
1.75 MAX.
0.35 x 45°
1)
0.0
4-0.2
+0.06
0.64±0.25
6±0.2
SEATING
PLANE
2)
+0.10
0.41-0.06
8
5
1
4
1.27
INDEX
MARKING
1) Does not include plastic or metal protrusion of 0.15 max. per side
2) Lead width can be 0.61 max. in dambar area
All dimensions are in units mm
The drawing is in compliance with ISO 128-30, Projection Method 1 [
Figure 6
8° M
AX.
1)
0.0
5-0.2
0.19-0.00
0.175±0.07
Package outlines
(1.45)
6
]
Outline PG-DSO-81)
Reflow soldering dimensions:
e = 1.27
A = 5.69
L = 1.31
B = 0.65
B
e
L
A
HLG05506
Figure 7
Footprint PG-DSO-81)
1) Dimensions in mm.
Datasheet
21
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
0.64±0.25
Seating Plane
0.08 C
Coplanarity
1.27
D
6±0.2
A
0.2
D 8x
Bottom View
5
5
8
4
4
1
2.65±0.2
8
0.1 C D 2x
0.35x45°
8° MAX.
2x
1.7 Max.
0.1 C A-B
1)
3.9±0.1
0.19+0.06
(1.45)
1)
4.9±0.1
0..0.1
Stand Off
Package outlines
1
B
Index
Marking
0.41±0.09
3±0.2
2)
0.2
C A-B D 8x
1) Does not include plastic or metal protrusion of 0.15max. per side
2) Dambar protrusion shall be maximum 0.1mm total in excess of lead width
All dimensions are in units mm
The drawing is in compliance with ISO 128-30, Projection Method 1 [
Figure 8
]
Outline and footprint PG-DSO-8 exposed pad (exposed pad)1)
Green product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant
with government regulations the device is available as a green product. Green products are RoHS-compliant
(i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
Further information on packages
https://www.infineon.com/packages
1) Dimensions in mm.
Datasheet
22
Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Revision history
7
Revision history
Revision Date
Changes
1.21
2021-04-20 Editorial changes.
Correct “Non inverting” to “Inverting” in the description of the FB pin in “Pin
definitions and functions” on Page 5.
Assigned the parameter “Adjust / enable input voltage (voltage tracking range)”
on Page 7 the number P_4.2.5.
Split the previous figure 6 into Figure 6 “Outline PG-DSO-8” on Page 21 and
Figure 7 “Footprint PG-DSO-81)” on Page 21. (The old figure 7 is now Figure 8
“Outline and footprint PG-DSO-8 exposed pad (exposed pad)” on Page 22.)
1.2
2009-11-09 Updated Version Data Sheet, version TLE4253E in PG-DSO-8 exposed pad and all
related description added:
In “Features” on Page 1 picture for package PG-DSO-8 updated
In “Features” on Page 1 “package” replaced by “packages”
In “Description” on Page 1 “a small PG-DSO-8 package” replaced by “small PG-DSO8 packages”; “The exposed pad (EP) package variant PG-DSO-8 exposed pad offers
extremely low thermal resistance.” added; “suits” replaces by “makes”
In “Pin assignment” on Page 5, package PG-DSO-8 exposed pad added
In “Pin definitions and functions” on Page 5 all definition for package
PG-DSO-8 exposed pad added
In “Thermal resistance” on Page 8 all values for package PG-DSO-8 exposed pad
added (P_4.3.6 - P_4.3.10)
In “Adjust / enable input” on Page 17 typo corrected: “resistors” replaced by
“resistor”
In “Package outlines” on Page 21 package PG-DSO-8 exposed pad added
1.1
2008-08-19 Updated Version Final Datasheet for TLE4253GS:
“Package outlines” on Page 21 updated;
In “Typical performance characteristics tracking regulator” on Page 16 Graph
“Current consumption Iq vs. input voltageVI” on Page 16 added
1.0
2007-07-10 Initial Final Datasheet for TLE4253GS.
For the TLE4253ES (exposed pad) product variant, please refer to the respective
datasheet
Datasheet
23
Rev. 1.21
2021-04-20
Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
Edition 2021-04-20
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2021 Infineon Technologies AG.
All Rights Reserved.
Do you have a question about any
aspect of this document?
Email: erratum@infineon.com
Document reference
Z8F55248541
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hereby disclaims any and all warranties and liabilities
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