l4949eptr-e STMicroelectronics, l4949eptr-e Datasheet - Page 12

• Manufacturer Part Number: l4949eptr-e
• Description: Multifunction Very Low Drop Voltage Regulator
• Manufacturer: STMicroelectronics

Application information
3.4
12/19
Figure 5.
Figure 6.
Preregulator
To improve the transient immunity a preregulator stabilizes the internal supply voltage to 5 V.
This internal voltage is present at Pin 3 (V
because the output capability is very small (≤ 10 µA).
This output may be used as an option when a better transient behaviour for supply voltages
less than 8 V is required (see also application note).
In this case a capacitor (100 nF - 1 µF) must be connected between pin V
feature is not used pin V
Output voltage vs input voltage
Quiescent current vs supply voltage
Z
must be left open.
Doc ID 16823 Rev 1
Z
). This voltage should not be used as an output
L4949ED-E, L4949EP-E
Z
and GND. If this