Automotive Power
Data Sheet
Rev. 1.01, 2016-06-21
TLF80511
Low Dropout Linear Fixed Voltage Regulator
TLF80511TC
PG-TO263-3
Type Package Marking
TLF80511TC PG-TO263-3 TLF80511
Data Sheet 2 Rev. 1.01, 2016-06-21
Low Dropout Linear Fixed Voltage Regulator
TLF80511V50
TLF80511
1Overview
Features
• Output Voltage 5 V
• Output Voltage Precision ±2%
• Output Current up to 400 mA
• Ultra Low Current Consumption 38 µA
• Very Low Dropout Voltage: 100 mV at 100 mA Output Current
• Extended Operating Range Starting at 3.3 V
• Small Output Capacitor 1 µF
• Output Current Limitation
• Overtemperature Shutdown
• Suitable for Use in Automotive Electronics
• Wide Temperature Range from -40 °C up to 150 °C
• Green Product (RoHS compliant)
• AEC Qualified
Description
The TLF80511 is a linear low dropout voltage regulator for load currents up to 400 mA. An input voltage of up to
40 V is regulated to VQ,nom = 5 V with ±2 % precision.
The TLF80511 with a typical quiescent current of 38 µA, is the ideal solution for systems requiring very low
operating currents, such as those permanently connected to a battery.
It features a very low dropout voltage of 100 mV, when the output current is less than 100 mA. In addition, the
dropout region begins at input voltages of 3.3 V (extended operating range). This makes the TLF80511 suitable
to supply automotive systems.
In addition, the TLF80511’s new fast regulation concept requires only a single, 1 µF output capacitor to maintain
stable regulation.
The device is designed for the harsh environment of automotive applications. Therefore standard features like
output current limitation and overtemperature shutdown are implemented and protect the device against failures
like output short circuit to GND, over-current and over-temperatures. The TLF80511 can be also used in all other
applications requiring a stabilized 5 V supply voltage.
TLF80511
Block Diagram
Data Sheet 3 Rev. 1.01, 2016-06-21
2 Block Diagram
Figure 1 Block Diagram
Bandgap
Reference
GND
Q
I
Current
Limitation
Temperature
Shutdown
Data Sheet 4 Rev. 1.01, 2016-06-21
TLF80511
Pin Configuration
3 Pin Configuration
3.1 Pin Assignment PG-TO263-3
Figure 2 Pin Configuration
3.2 Pin Definitions and Functions PG-TO263-3
Pin Symbol Function
1I Input
for compensating line influences, a capacitor to GND close to the IC terminals is
recommended
2GND Ground
3Q Output
block to GND with a capacitor close to the IC terminals, respecting the values given
for its capacitance CQ and ESR in the table “Functional Range” on Page 6
Tab GND Heat Slug
connect to heatsink area;
connect with GND on PCB
123
IGND
GND
Q
TLF80511
General Product Characteristics
Data Sheet 5 Rev. 1.01, 2016-06-21
4 General Product Characteristics
4.1 Absolute Maximum Ratings
Note: 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.
Note: 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.
Absolute Maximum Ratings 1)
-40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
1) Not subject to production test, specified by design.
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Max.
Input I
4.1.1 Voltage VI-0.3 45 V –
Output Q
4.1.2 Voltage VQ-0.3 7 V –
Temperature
4.1.3 Junction Temperature Tj-40 150 °C–
4.1.4 Storage Temperature Tstg -50 150 °C–
ESD Absorption
4.1.5 ESD Absorption VESD,HBM -4 4 kV Human Body
Model (HBM)2)
2) ESD HBM Test according AEC-Q100-002 - JESD22-A114 (1.5kOhm, 100pF)
4.1.6 VESD,CDM -1.5 1.5 kV Charge Device
Model (CDM)3)
3) ESD CDM Test according ESDA STM5.3.1
Data Sheet 6 Rev. 1.01, 2016-06-21
TLF80511
General Product Characteristics
4.2 Functional Range
Note: 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.
4.3 Thermal Resistance
Note: This thermal data was generated in accordance with JEDEC JESD51 standards. For more information, go
to www.jedec.org.
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Max.
4.2.1 Input Voltage Range for Normal
Operation
VIVQ,nom +Vdr 40 V –
4.2.2 Extended Input Voltage Range VI,ext 3.3 40 V –1)
1) Between min. value and VQ,nom +Vdr: VQ=VI-Vdr. Below min. value: VQ=0V
4.2.3 Output Capacitor’s Requirements
for Stability
CQ1–µF–
2)
2) the minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30%
ESR(CQ)–5Ω–3)
3) relevant ESR value at f=10kHz
4.2.4 Junction Temperature Tj-40 150 °C–
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.
Package Versions PG-TO263-3
4.3.1 Junction to Case1)
1) Not subject to production test, specified by design
RthJC –4–K/W–
4.3.2 Junction to Ambient1) RthJA –22–K/W
2)
2) Specified RthJA value is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The Product
(Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm³ board with 2 inner copper layers (2 x 70µm Cu, 2 x 35µm Cu).
Where applicable a thermal via array under the exposed pad contacted the first inner copper layer.
4.3.3 – 65 – K/W footprint only3)
3) Specified RthJA value is according to JEDEC JESD 51-3 at natural convection on FR4 1s0p board; The Product
(Chip+Package) was simulated on a 76.2 × 114.3 × 1.5 mm3 board with 1 copper layer (1 x 70µm Cu).
4.3.4 – 39 – K/W 300 mm2 heatsink
area on PCB3)
4.3.5 – 33 – K/W 600 mm2 heatsink
area on PCB3)
TLF80511
Block Description and Electrical Characteristics
Data Sheet 7 Rev. 1.01, 2016-06-21
5 Block Description and Electrical Characteristics
5.1 Voltage Regulation
The output voltage VQ is divided by a resistor network. This fractional voltage is compared to an internal voltage
reference and drives the pass transistor accordingly.
The control loop stability depends on the output capacitor CQ, the load current, the chip temperature and the
internal circuit design. To ensure stable operation, the output capacitor’s capacitance and its equivalent series
resistor ESR requirements given in Table 4.2 “Functional Range” on Page 6 must be maintained. For details
see the typical performance graph “Stability Region: Equivalent Serial Resistor ESR versus Output Current
IQ” on Page 12. Since the output capacitor is used to buffer load steps, it should be sized according to the
application’s needs.
An input capacitor CI is not required for stability, but is recommended to compensate line fluctuations. An
additional reverse polarity protection diode and a combination of several capacitors for filtering should be used.
Connect the capacitors close to the regulator terminals.
Whenever the load current exceeds the specified limit, e.g. in case of a short circuit, the output current is limited
and the output voltage decreases.
The overtemperature shutdown circuit prevents the IC from immediate destruction under fault conditions (e.g.
output continuously short-circuited) by switching off the power stage. After the chip has cooled, the regulator
restarts. This oscillatory thermal behaviour causes the junction temperature to exceed the 150° C maximum and
significantly reducing the IC’s life.
Figure 3 Block Diagram Voltage Regulation
LOAD
Supply
CI
Regulated
Output Voltage
IQ
II
VIVQ
C
ESR
CQ
Bandgap
Reference
GND
Q
I
ApplicationDiagram.vsd
Current
Limitation
Temperature
Shutdown
Data Sheet 8 Rev. 1.01, 2016-06-21
TLF80511
Block Description and Electrical Characteristics
Electrical Characteristics Voltage Regulator 5 V version
VI = 13.5 V, -40 °C ≤ Tj ≤ 150 °C, all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.
5.1.1 Output Voltage Precision VQ4.9 5.0 5.1 V 0.05 mA < IQ <
400 mA
6V < VI < 28 V
5.1.2 Output Voltage Precision VQ4.9 5.0 5.1 V 0.05 mA < IQ<
200 mA
5.5 V < VI < 40 V
5.1.3 Output Current Limitation IQ,max 401 600 900 mA 0 V < VQ <4.8V
5.1.4 Load Regulation
steady-state
|ΔVQ,load|–2050mVIQ= 0.05 mA to
400 mA
VI = 6 V
5.1.5 Line Regulation
steady-state
|ΔVQ,line|–1030mVVI = 8 V to 32 V
IQ = 5 mA
5.1.6 Dropout Voltage1)
Vdr = VI - VQ
1) Measured when the output voltage VQ has dropped 100 mV from the nominal value obtained at VI = 13.5V
Vdr – 250 500 mV IQ = 250 mA
– 100 200 mV IQ = 100 mA
5.1.7 Power Supply Ripple Rejection2)
2) Not subject to production test, specified by design
PSRR –55–dBfripple = 100 Hz
Vripple = 0.5 Vpp
5.1.8 Overtemperature Shutdown
Threshold
Tj,sd 151 175 200 °C Tj increasing2)
5.1.9 Overtemperature Shutdown
Threshold Hysteresis
Tj,sdh –15–KTj decreasing2)
TLF80511
Block Description and Electrical Characteristics
Data Sheet 9 Rev. 1.01, 2016-06-21
5.2 Current Consumption
Electrical Characteristics Current Consumption
VI = 13.5 V, -40 °C ≤ Tj ≤ 150 °C, positive current flowing into pin
(unless otherwise specified)
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.
5.2.1 Current Consumption
Iq = II - IQ
Iq–3846µAIQ = 0.05 mA
Tj < 25 °C
5.2.2 – – 75 µA IQ = 0.05 mA
Tj<125°C
5.2.3 – 67 80 µA IQ = 400 mA
Tj< 125 °C1)
1) Not subject to production test, specified by design.
Data Sheet 10 Rev. 1.01, 2016-06-21
TLF80511
Block Description and Electrical Characteristics
5.3 Typical Performance Characteristics Voltage Regulator
Current Consumption Iq versus
Output Current IQ
Dropout Voltage Vdr versus
Junction Temperature Tj
Dropout Voltage Vdr versus
Output Current IQ
Output Voltage VQ versus
Junction Temperature Tj
22
28
34
40
46
52
58
0 100 200 300 400
I
q
[µA]
I
Q
[mA]
T
j
= 25 °C
V
I
= 13.5 V
0
50
100
150
200
250
300
350
400
-40 0 40 80 120 160
V
DR
[mV]
T
j
[°C]
I
Q
= 250 mA
I
Q
= 100 mA
I
Q
= 10 mA
I
Q
= 250 mA
I
Q
= 100 mA
I
Q
= 10 mA
0
100
200
300
400
500
600
0 100 200 300 400
V
DR
[mV]
I
Q
[mA]
T
j
= 125 °C
T
j
= 25 °C
4,80
4,85
4,90
4,95
5,00
5,05
5,10
5,15
5,20
-40 0 40 80 120 160
V
Q
[V]
T
j
[°C]
V
I
= 13.5 V
I
Q
= 200 mA
TLF80511
Block Description and Electrical Characteristics
Data Sheet 11 Rev. 1.01, 2016-06-21
Output Voltage ΔVQ versus
Output Current ΔIQ
Output Voltage ΔVQ versus
Input Voltage ΔVI
Maximum Output Current IQ versus
Input Voltage VI
Current Consumption Iq versus
Input Voltage VI
-12
-10
-8
-6
-4
-2
0
2
0 100 200 300 400
Δ
V
Q
[mV]
ΔI
Q
[mA]
V
I
= 13.5 VV
I
= 13.5 V
T
j
= -40 °C
T
j
= 25 °C
0
100
200
300
400
500
600
700
0 10203040
I
Q,max
[mA]
V
I
[V]
T
j
= 150 °C
T
j
= 25 °C
T
j
= -40 °C
V
Q
= 4.8 V
0
10
20
30
40
50
60
70
80
90
100
0 10203040
I
q
[µA]
V
I
[V]
R
LOAD
= 100 Ω
Tj
= -40 °C
Tj
= 150 °C
Tj
= 25 °C
Data Sheet 12 Rev. 1.01, 2016-06-21
TLF80511
Block Description and Electrical Characteristics
Power Supply Ripple Rejection versus
Frequency
Stability Region: Equivalent Serial Resistor ESR
versus Output Current IQ
Output Voltage VQ versus
Input Voltage VI
0
10
20
30
40
50
60
70
0,01 0,1 1 10 100 1000
PSRR [dB]
f[kHz]
I
Q
= 10 mA
C
Q
= 1 µF
V
I
= 13.5 V
V
ripple
= 0.5 Vpp
T
j
= 25 °C
0,01
0,1
1
10
100
0 100 200 300 400
ESR(C
Q
)[Ω]
I
Q
[mA]
C
Q
= 1 µF
V
I
= 6..28 V
Stable
Region
Unstable
Region
0
1
2
3
4
5
6
0246
VQ
[V]
VI
[V]
I
Q
= 100 mA
T
j
= 25°C
TLF80511
Package Outlines
Data Sheet 13 Rev. 1.01, 2016-06-21
6 Package Outlines
Figure 4 PG-TO263-3
BA0.25
M
0.1
Typical
±0.2
GPT09362
10
8.5
1)
7.55
1)
(15)
±0.2
9.25
±0.3
1
0...0.15
5.08
2.54
0.75
±0.1
1.05
±0.1
1.27
4.4
B
0.5
±0.1
±0.3
2.7
4.7
±0.5
0.05
1)
0.1
All metal surfaces: tin plated, except area of cut.
2.4
Metal surface min. x=7.25, y=6.9
A
0...0.3
B
8˚ MAX.
Data Sheet 14 Rev. 1.01, 2016-06-21
TLF80511
Revision History
7 Revision History
Revision Date Changes
1.01 2016-06-21 Editorial change: corrected page number
Updated disclaimer
1.0 2012-06-15 Data Sheet - Initial Version
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Edition 2016-06-21
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