TLF4949 Datasheet, PDF (9/23 Pages) Infineon Technologies AG – 5V Low Drop Out Linear Voltage Regulator

TLF4949
4.4
Electrical Characteristics
4.4.1 Voltage Regulator
Electrical Characteristics: Regulator
V_IN = 14 V, T_j = -40°C to +125°C, all voltages with respect to ground, direction of current as shown in Figure 4
“Application Diagram” on Page 15 (unless otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
4.4.1
4.4.2
Output Voltage
4.4.3
4.4.4
4.4.5
Dropout Voltage
V_DR = V_IN - V_OUT
4.4.6
4.4.7
Input to Output Voltage
Difference in Undervoltage
Condition
Current Sink Capability from
Output to GND
V_OUT
V_DR
V_IO
I_outh2)
4.95 5
4.90 5
5.05 V
5.10 V
4.85 –
5.15 V
4.85 5
5.15
0.1 0.25 V
0.2 0.4 V
0.3 0.5 V
–
0.17 0.4 V
T_J = 25°C; I_OUT = 1mA
6V ≤ V_IN ≤ 28V;
1mA ≤ I_OUT ≤ 50mA
V_IN = 40V¹⁾;
5mA ≤ I_OUT ≤ 100mA
6V ≤ V_IN ≤ 28V;
0mA ≤ I_OUT ≤ 100mA
I_OUT = 10mA
I_OUT = 50mA
I_OUT = 100mA
V_IN = 3.5V;
I_OUT = 35mA
-30 -55 –
µA V_IN = 25V; V_OUT = 5.5V
4.4.8 Line Regulation
4.4.9 Load Regulation
ΔV_OUT,line –
1
15
mV 6V < V_IN < 28V;
I_OUT = 1mA
ΔV_OUT,load –
4
20
mV 1mA ≤ I_OUT ≤ 100mA
4.4.10 Current Limit
I_OUT,lim
120 240 400 mA V_OUT = 4.5V
180
mA V_OUT = 0V ³⁾
4.4.11 Quiescent Current
I_QSE
–
180 300 µA I_OUT = 0.3mA
4.4.12 Quiescent Current
I_Q
–
–
3.6
mA I_OUT = 100mA
1) V_IN = 40V may be only applied as transient supply voltage to the device for maximum period of t_TR < 1s. Please note that
also for such transient conditions, especially under higher load conditions, the absolute maximum rating of T_J must be
respected at any time. If transient conditions up to V_IN = 40V and elevated load currents are expected in the application a
sufficient cooling must be provided to meet the power dissipation. Testing this parameter for the maximum allowed period
of T = 1s is for thermal reasons not subject to production test but guaranteed by design.
2) The test of this parameter ensures that the output voltage will not exceed 5.5V in a corresponding “no load current”-
condition. A sufficiently high value for I_outh will allow the output to react in a fast manner in case of a sudden decrease of
load current (e.g. if load is switching to standby or powerdown mode) .
3) Foldback characteristic.
Data Sheet
9
Rev. 1.0, 2012-05-07