Datasheet

Data Sheet 8 Rev. 1.0, 2012-05-07
IFX4949
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 3
“Application Diagram” on Page 14 (unless otherwise specified)
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.
4.4.1 Output Voltage
V
OUT
4.95 5 5.05 V T
J
= 25°C; I
OUT
= 1mA
4.4.2 4.90 5 5.10 V 6V ≤
V
IN
≤ 28V;
1mA ≤
I
OUT
≤ 50mA
4.4.3 4.85 – 5.15 V
V
IN
= 40V
1)
;
5mA ≤
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.
4.4.4 4.85 5 5.15 6V ≤ V
IN
≤ 28V;
0mA ≤
I
OUT
≤ 100mA
4.4.5 Dropout Voltage
V
DR
= V
IN
- V
OUT
V
DR
0.1
0.2
0.3
0.25
0.4
0.5
V
V
V
I
OUT
= 10mA
I
OUT
= 50mA
I
OUT
= 100mA
4.4.6 Input to Output Voltage
Difference in Undervoltage
Condition
V
IO
–0.170.4 V V
IN
= 3.5V;
I
OUT
= 35mA
4.4.7 Current Sink Capability from
Output to GND
I
outh
2)
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) .
-30 -55 – µA V
IN
= 25V; V
OUT
= 5.5V
4.4.8 Line Regulation
ΔV
OUT,line
– 1 15 mV 6V < V
IN
< 28V;
I
OUT
= 1mA
4.4.9 Load Regulation
ΔV
OUT,load
– 4 20 mV 1mA ≤ I
OUT
≤ 100mA
4.4.10 Current Limit
I
OUT,lim
120 240
180
400 mA
mA
V
OUT
= 4.5V
V
OUT
= 0V
3)
3) Foldback characteristic.
4.4.11 Quiescent Current I
QSE
– 180 300 µA I
OUT
= 0.3mA
4.4.12 Quiescent Current I
Q
––3.6mA I
OUT
= 100mA