Datasheet

IFX91041
Buck Regulator
Data Sheet 9 Rev. 1.1, 2011-07-08
5.2.19 Charge pump switch-off threshold
V
BDS
-
V
BUO
–– 5 V(V
BDS
- V
BUO
) increasing
5.2.20 Maximum duty cycle
D
max
–– 100%
3)
5.2.21 Soft start ramp t
start
350 500 750 µs V
FB
rising from 5% to
95% of
V
FB,nom
5.2.22 Input under voltage shutdown
threshold
V
S,off
3.75 – – V V
S
decreasing
5.2.23 Input voltage startup threshold
V
S,on
– – 4.75 V V
S
increasing
5.2.24 Input under voltage shutdown
hysteresis
V
S,hyst
150 – – mV –
1) Not subject to production test, application related parameter
2) Not subject to production test; specified by design.
3) Consider “Chapter 4.2, Functional Range”
Electrical Characteristics: Buck Regulator
V
S
= 6.0 V to 40 V, T
j
= -40 °C to +125°C, all voltages with respect to ground (unless otherwise specified)
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.