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TLE4253GS 英飞凌芯片 INFINEON 中文版规格书手册.pdf
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TLE4253GS 英飞凌芯片 INFINEON 中文版规格书手册
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Datasheet Rev. 1.21
www.infineon.com/OPTIREG-linear 1 2021-04-20
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 ≤ V
I
≤ 45 V
• Wide temperature range: -40°C ≤ T
j
≤ 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 PG-
DSO-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 2 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 3 Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Potential applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Product validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 General product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1 Tracking regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2 Current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3 Adjust / enable input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table of contents
Datasheet 4 Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Block diagram
1 Block diagram
Figure 1 Block diagram
Saturation
Control and
Protection
circuits
Temperature
control
+
-
I
GND
Q
FB
EN/
ADJ
TLE4253
+
-
=
typ.
1.4V
Datasheet 5 Rev. 1.21
2021-04-20
OPTIREG™ linear TLE4253
High precision voltage tracker
Pin configuration
2 Pin configuration
2.1 Pin assignment
Figure 2 Pin configuration and block diagram
2.2 Pin definitions and functions
Pin Symbol Function
1Q 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.
6GNDGround (version TLE4253E only).
Connect to exposed pad.
2, 3, 7 n. c. Not connected (version TLE4253E only).
Connect to GND externally.
4FBFeedback 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).
5EN/ADJAdjust / 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).
8I Input.
IC supply. For compensating line influences, a capacitor close to the IC terminals is
recommended.
–EPExposed pad (version TLE4253E only).
Attach the exposed pad on package bottom to the heatsink area on circuit board.
Connect to GND.
GND
GND
GND
FB EN/ADJ
I
Q
4
3
2
1
TLE4253GS
GND
5
6
7
8
n. c.
n. c.
GND
FB EN/ADJ
I
Q
4
3
2
1
TLE4253E
n. c.
5
6
7
8
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