Dual Low-Drop Voltage Regulator
TLE 4476
Features
•
•
•
•
•
•
•
•
•
•
•
Output 1: 350 mA; 3.3 V
±
4 %
Output 2: 430 mA; 5.0 V
±
4 %
Enable input for output 2
Low quiescent current in OFF state
Wide operation range: up to 42 V
Reverse battery protection: up to 42 V
Output protected against short circuit
Wide temperature range: – 40
°
C to 170
°
C
Over-voltage protection up to 65 V (< 400 ms)
Over-temperature protection
Over-load protection
Ordering Code
Q67006-A9362
Package
P-TO252-5-1 (D-PAK) (SMD)
P-TO252-5-1
Type
TLE 4476 D
New type
Functional Description
The TLE 4476 is a monolithic integrated voltage regulator providing two output voltages,
Q1 is a 3.3 V output for loads up to 350 mA and Q2 is a 5 V output providing 430 mA.
The device is available in the P-TO252-5-1 (D-PAK) package. Output 2 can be switched
ON/OFF via the Enable input EN.
The TLE 4476 is designed to supply microprocessor systems under the severe
conditions of automotive applications and is therefore equipped with additional
protection functions against over load, short circuit and over temperature.
Data Sheet Rev. 2.3
1
2002-02-20
TLE 4476
GND
1
Ι
Q1
Q2
EN
5
AEP02562
Figure 1
Pin Configuration
(top view)
Pin Definitions and Functions
Pin No.
1
2
3
4
5
Symbol
I
Q1
GND
Q2
EN
Function
Input voltage;
block to GND directly at the IC with a ceramic
capacitor
3.3 V output;
block to GND with a capacitor
C
Q1
³
10
m
F,
ESR < 2
W
at 10 kHz
Ground
5.0 V output;
block to GND with a capacitor
C
Q2
³
10
m
F,
ESR < 3
W
at 10 kHz
Enable input;
to switch ON and OFF Q2, ON with high
signal
Data Sheet Rev. 2.3
2
2002-02-20
TLE 4476
Absolute Maximum Ratings
– 40
°
C <
T
j
< 170
°
C
Parameter
Symbol
Limit Values Unit
min.
Input I
Voltage
Current
3.3 V Output Q1
Voltage
Current
5.5 V Output Q2
Voltage
Current
Inhibit EN
Voltage
Current
Temperatures
Junction temperature
Storage temperature
max.
Remarks
V
I
I
I
– 42
–
–
42
65
–
V
V
mA
–
t
< 400 ms
Internally limited
V
Q1
I
Q1
–1
–
36
–
V
mA
–
Internally limited
V
Q2
I
Q2
–1
–
36
–
V
mA
–
Internally limited
V
EN
I
EN
– 42
–
–
42
65
–
V
V
mA
–
t
< 400 ms
Internally limited
T
j
T
stg
– 50
– 50
170
150
°
C
°
C
–
–
Note: ESD-Protection according to MIL Std. 883:
±
2 kV.
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. 2.3
4
2002-02-20
TLE 4476
Operating Range
Parameter
Output 1 input voltage
Output 2 input voltage
3.3 V regulator
output current
5 V regulator
output current
Junction temperature
Thermal Resistances
Junction case
Junction ambient
1)
Symbol
Limit Values
min.
max.
42
42
350
430
170
4.5
5.7
0
0
– 40
Unit
V
V
mA
mA
Remarks
1)
2)
V
I1
V
I1
I
O1
I
O2
T
j
–
–
3)
°
C
R
th,j-case
R
th,j-a
–
–
3
80
K/W
K/W
–
4)
Input voltage
V
I
required for operation of output Q1
Input voltage
V
I
required for operation of output Q2
The overtemperature protection is set to > 170
°C.
The voltage regulator may not be operated continuously at
170
°C
as device reliability will be reduced to 500 h statistic lifetime.
Worst case regarding peak temperature, zero airflow; mounted on a PCB 80
´
80
´
1.5 mm
3
, 35
mm
Cu, 5
mm
Sn, heat sink area 300 mm
2
.
2)
3)
4)
Note: In the operating range the functions given in the circuit description are fulfilled.
Data Sheet Rev. 2.3
5
2002-02-20
Analog electronics
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