tle4266-2 Infineon Technologies Corporation, tle4266-2 Datasheet - Page 7

• Manufacturer Part Number: tle4266-2
• Description: 5 Volt Ultra Low Quiescent Current Regulator
• Manufacturer: Infineon Technologies Corporation

Figure 3
Circuit Description and Application Information
In the TLE 4266-2 the output voltage is divided and compared to an internal reference of
2.5 V typical. The regulation loop controls the output to achieve an output voltage of 5 V
with an accuracy of ±2% at an input voltage up to 45 V. The minimum required input
voltage is
Characteristics” on Page
requires a minimum input voltage of 4.4 V.
The TLE 4266-2 can supply up to 150 mA. However for protection reasons at high input
voltage above 25 V, the maximum output current is reduced (SOA protection).
Figure 3
TLE 4266-2 output requires an output capacitor
permissible ESR of 4 Ω. Tantalum as well as multi layer ceramic capacitors are suitable.
At the input of the regulator an input capacitor is necessary for compensating line
influences (100 nF ceramic capacitor recommended). A resistor of approx. 1 Ω in series
with
capacitor. In the measuring circuit shown in
capacitor of 470 μF is added in order to buffer supply line influences. This capacitor is
recommended, if the device is sourced via long supply lines of several meters.
The TLE 4266-2 includes the Inhibit function. For a voltage above 3.5 V at the INH pin
the regulator is switched on.
Data Sheet
C
I
, can damp any oscillation occuring due the input inductivity and the input
shows a typical measuring circuit. For stability of the control loop the
V
Q
+
Measuring Circuit
V
V
i
dr
Input
5.5 V to 45 V
with a drop voltage
470 µF
8) in case of the TLE 4266-2 G. The TLE 4266-2 GSV33
V
INH
i
INH
100
nF
V
dr
7
INH
of max. 0.5 V (see
TLE 4266-2
Figure 3
GND
C
Q
of at least 10 μF with a maximum
Q
an additional electrolytic input
10
“Typical Performance
AES02875
Q
µF
Output
V
Rev. 1.3, 2007-03-20
Q
TLE 4266-2