31
4929B–AUTO–01/07
ATA6264 [Preliminary]
Necessary for operation:
VEVZ = 5.5V to 40V, VCP > VEVZ + 7V, VINT = 3.7V to 5.45V
Operating conditions of all other supply pins:
VK30, VPERI and VCORE are within functional range limits, Tj = –40°C to +150°C
Other pins:
As defined in Section 4. ”Functional Range” on page 8.
Table 10-1. Electrical Characteristics – VSAT Power Supply
No. Parameters Test Conditions Pin Symbol Min Typ. Max. Unit Type*
9.1 VEVZ voltage for the buck
converter to start running EVZ VEVZ 7.5 9 V A
9.2 VEVZ voltage for the buck
converter to stop EVZ VEVZ 5.5 6.2 V A
9.3 Regulator switch-on time via pin
EVZ SVSAT tSVSAT 020µsA
9.4 Regulator switch-off time via pin
EVZ SVSAT tSVSAT 05µsA
9.5 Regulator switching frequency VEVZ ≥8V SVSAT fSVSAT –5% 200 +5% kHz A
9.5a Regulator switching frequency 5.5V> VEVZ ≥8V SVSAT fSVSAT –10% 200 +10% kHz A
9.6 Output current limit SVSAT ISVSAT 0.8 1 A A
9.7 RDson of output transistor SVSAT RSVSAT 1ΩA
9.8 Output voltage #1 only at
VPERI=3.3V
Band-gap tolerance
included VSAT VVSAT1 –4% 7.8 +4% V A
9.9 Output voltage #2
VVSAT2 programmed,
Band-gap tolerance
included
VSAT VVSAT2 –4% 9.1 +4% V A
9.10 Output voltage #3
VVSAT3 programmed,
Band-gap tolerance
included
VSAT VVSAT3 –4% 10.4 +4% V A
9.11 Output transistor switch-on time
Time between reaching
0.1 × (VEVZmax – VSVSATmin)
and
0.9 × (VEVZmax – VSVSATmin)
150 ns A
9.12 Output transistor switch-on time
Time between reaching
0.9 × (VEVZmax – VSVSATmin)
and
0.1 × (VEVZmax – VSVSATmin)
150 ns A
9.13 Overvoltage switching off the
regulator VSAT VVSAT 1.1 ×
VSATX VA
9.14 Overvoltage switch-on time
Time between reaching
overvoltage and reaching
90% of VSVSAT maximum
under on condition
SVSAT tSVSAToff 00.4µsA
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Notes: 1. Depending on implementation of slope compensation; sub-harmonics must be prevented
2. The value of the minimum load current must be higher than the internal pull-up current at pin VSAT to ensure proper func-
tion of the regulator