TLE4278G Infineon Technologies, TLE4278G Datasheet - Page 13

• Manufacturer Part Number: TLE4278G
• Description: IC REG LDO 5V 200MA DSO-14
• Manufacturer: Infineon Technologies

Specifications of TLE4278G

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: 5.5 ~ 45 V
• Voltage - Dropout (typical): 0.25V @ 150mA
• Number Of Regulators: 1
• Current - Output: 150mA (Max)
• Current - Limit (min): 200mA
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: DSO-14
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 45 V
• Output Voltage: 5 V
• Output Type: Fixed
• Dropout Voltage (max): 0.5 V at 150 mA
• Output Current: 200 mA
• Line Regulation: 20 mV
• Load Regulation: - 5 mV
• Voltage Regulation Accuracy: 2 %
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SP000011838; SP000305157; TLE4278GINTR; TLE4278GNT; TLE4278GT; TLE4278GT; TLE4278GXT

Watchdog Activating
The calculation of the external resistor which adjusts the watchdog switch off threshold
can be done by
R
Definitions:
•
•
•
Figure 7
Data Sheet
WADJ
V
I
I
Q
Q,act
WADJ,th
/
I
=
WADJ
V
= switch off load current
WADJ,th
R
= switch off threshold, typical 1.35 V
= current ratio, typical 720
WADJ
WADJ
Equation
(
I
Q
/
I
WADJ
Band-Gap-
Reference
(4):
)/
I
Q,act
13
TLE 4278 G
GND
-
+
Watchdog
Watchdog
disabled
HIGH
active
LOW
Rev. 1.4, 2007-02-19
TLE 4278 G
AES03072
Q
(4)