TLE4278G_07 Datasheet, PDF (10/20 Pages) Infineon Technologies AG – 5-V Low Drop Fixed Voltage Regulator Output voltage tolerance ≤ ±2%

TLE 4278 G
Application Information
Input, Output
The input capacitors C_I1 and C_I2 are necessary for compensating line influences. Using
a resistor of approx. 1 Ω in series with C_I1, the LC circuit of input inductance and input
capacitance can be damped. To stabilize the regulation circuit the output capacitor C_Q is
necessary. Stability is guaranteed at values C_Q ≥ 10 µF with an ESR ≤ 5 Ω within the
operating temperature range.
+12 V
V_{Ι 13}
9 ^VQ
C_Ι1
C_Ι2 470 nF
TLE 4278G
1 ^WO
14 ^RO
R₁
C_Q
22 µF
8 ^WΙ
3-5,
7 ^RADJ
*)
6
10-12
2
D
GND
WADJ
Cooling
Area
C_D 47 nF
R _WADJ
R₂
*) _{or short to GND}
for internal threshold
µP
AES02116
Figure 4 Application Circuit
Data Sheet
10
Rev. 1.4, 2007-02-19