IFX91041 Datasheet, PDF (9/17 Pages) Infineon Technologies AG – 1.8A DC/DC Step-Down Voltage Regulator 5.0V, 3.3V or Adjustable Output Voltage

IFX91041
Buck Regulator
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.
5.2.19
5.2.20
5.2.21
Charge pump switch-off threshold
Maximum duty cycle
Soft start ramp
V_BDS -
V_BUO
D_max
t_start
–
–
5
–
–
100
350 500 750
V
(V_BDS - V_BUO) increasing
%
3)
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 –
5.2.23
5.2.24
Input voltage startup threshold
Input under voltage shutdown
hysteresis
V_S,on
V_S,hyst
–
–
150 –
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”
–
V V_S decreasing
4.75 V V_S increasing
–
mV –
Data Sheet
9
Rev. 1.01, 2009-10-19