5-V Low-Drop Voltage Regulator
TLE 4290
Features
•
•
•
•
•
•
•
•
Output voltage 5 V
±
2%
Very low current consumption
450 mA current capability
Power Good Feature
Very low-drop voltage
Short-circuit-proof
Reverse polarity proof
Suitable for use in automotive electronics
Ordering Code
Q67006-A9408
Q67000-A9407
Package
P-TO252-5-1 (SMD)
P-TO263-5-1 (SMD)
P-TO220-5-11
P-TO263-5-1
P-TO252-5-1
Type
•
TLE 4290 D
•
TLE 4290
•
New type
•
TLE 4290 G Q67006-A9405
Functional Description
The TLE 4290 is a monolithic integrated low-drop
voltage regulator which can supply loads up to 450 mA
with power good feature. An input voltage up to 42 V is
regulated to
V
Q,nom
= 5.0 V. The device is designed to
supply
µ
-controllers in the severe environment of
automotive applications. Therefore it is protected
against overload, short circuit and over temperature
conditions. Of course the TLE 4290 can been used also
in all other applications, where a stabilized 5 V voltage is
required.
P-TO220-5-11
Data Sheet Rev. 1.4
1
2001-10-18
TLE 4290
Power Good
The Power Good PG pin informs e.g. the microcontroller in case the output voltage has
fallen below the lower threshold
V
Q,pgt-d
of typ. 3.65 V. Connecting the regulator to a
battery voltage at first the power good signal remains LOW. When the output voltage has
reached the higher threshold
V
Q,pgt-i
the power good output remains still LOW for the
power good delay time
t
rd
. Afterwards the power good output turns HIGH. The delay time
can be set by the user with an external capacitor at pin D according to the requirements
of the application.
The Power Good circuitry supervises the output voltage. In case
V
Q
falls below the lower
Power Good switching threshold
V
Q,pgt-d
the PG output is set LOW after the Power Good
reaction time. The Power Good LOW signal is generated down to an output voltage
V
Q
to 1 V. A LOW signal at the Power Good pin informs that the battery was lost and
memory is no longer valid.
The feature should be used in combination with a microcontroller with internal reset.
TLE 4290
I
1
5
Q
Band-
Gap-
Reference
Current
and
Saturation
Control
2
Power
Good
Control
PG
4
GND
D
AEB02823
Figure 1
Block Diagram
Data Sheet Rev. 1.4
2
2001-10-18
TLE 4290
P-TO252-5-1 (D-PAK)
GND
P-TO263-5-1 (SMD)
P-TO220-5-11
I
PG
D Q
AEP02825
I
PG GND D
Q
AEP02827
I
PG
GND
D
Q
AEP02826
Figure 2
Pin Configuration
(top view)
Pin Definitions and Functions
Pin No. Symbol Function
1
2
3
4
5
I
PG
GND
D
Q
Input;
block to ground directly at the IC with a ceramic capacitor.
Power Good;
open collector output. Add a pull up resistor of > 5 k
Ω
to pin Q.
Ground;
Pin 3 internally connected to heatsink.
Delay;
connect a capacitor to GND for setting power good delay
time.
Output;
block to ground with a capacitor,
C
≥
22
µ
F
ESR < 5
Ω
at 10 kHz.
Data Sheet Rev. 1.4
3
2001-10-18
TLE 4290
Absolute Maximum Ratings
Parameter
Symbol
Limit Values
min.
Input I
Voltage
Current
Output Q
Voltage
Current
Power Good Output PG
Voltage
Current
Delay D
Voltage
Current
Temperature
Junction temperature
Storage temperature
max.
Unit Test Condition
V
I
I
I
– 42
–
45
–
V
–
–
Internally limited
V
Q
I
Q
– 1.0
–
16
–
V
–
–
Internally limited
V
PG
I
PG
– 0.3
–5
25
5
V
mA
–
–
V
D
I
D
– 0.3
–2
7
2
V
mA
–
–
T
j
T
stg
– 40
– 50
150
150
°
C
°
C
–
–
Note: Stresses above those listed here may cause permanent damage to the device.
Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Data Sheet Rev. 1.4
4
2001-10-18
TLE 4290
Operating Range
Parameter
Input voltage
Junction temperature
Thermal Resistance
Junction case
Junction ambient
Junction ambient
Junction ambient
1)
Symbol
Limit Values
min.
max.
42
150
5.5
– 40
Unit Remarks
V
I
T
j
V
°
C
–
–
area 300 mm
2
K/W TO220
Worst case, regarding peak temperature; zero airflow; mounted on a PCB FR4, 80
×
80
×
1.5 mm
3
, heat sink
R
thj-c
R
thj-a
R
thj-a
R
thj-a
–
–
–
–
4
53
78
65
K/W –
K/W TO263
1)
K/W TO252
1)
Note: In the operating range, the functions given in the circuit description are fulfilled.
Data Sheet Rev. 1.4
5
2001-10-18
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