27
4929B–AUTO–01/07
ATA6264 [Preliminary]
Necessary for operation:
VK15 = 3V to 40V, VK30 = 5V to 40V, CGEVZ = 200 pF to 2 nF, VINT = 3.7V to 5.47V
Operating conditions of all other supply pins:
VSAT, 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 9-1. Electrical Characteristics – EVZ Step-up Regulator
No. Parameters Test Conditions Pin Symbol Min Typ. Max. Unit Type*
8.1 Switching frequency VK30 ≥ 8V or VEVZ ≥ 8V
(after startup) GEVZ fGEVZ –5% 100 +5% kHz A
8.2 Switching frequency
4V < VK30 < 8V or
4V < VEVZ < 8V
(after startup)
GEVZ fGEVZ –10% 100 +10% kHz A
8.3 Voltage level at K15 to start the
EVZ regulator
See number 7.1 of
Table 8-2 on page 23 A
8.4 Hysteresis at K15 to stop the
EVZ regulator
See number 7.2 of
Table 8-2 on page 23 A
8.5 Voltage level at K30 to start the
EVZ regulator
See number 7.3 of
Table 8-2 on page 23 A
8.6 Hysteresis at K30 to stop the
EVZ regulator
See number 7.4 of
Table 8-2 on page 23 A
8.7 Voltage at pin GEVZ to switch
through the external driver
VK30 ≥ 3.85V to 5V
(ON threshold) GEVZ VGEVZ VK30 –
0.5V VK30 VA
8.8 Voltage at pin GEVZ to switch
through the external driver VK30 ≥ 7V GEVZ VGEVZ 610VA
8.9
Driving current at pin GEVZ to
switch through the external
driver
VGEVZ ≤5V GEVZ IGEVZ –600 –80 mA A
8.10 Gate charge delivered to the
external FET VGEVZ = 5V GEVZ QGEVZ 10 nC D
8.11 Gate charge delivered to the
external FET VGEVZ = 10V GEVZ QGEVZ 20 nC D
8.12 Pull-down resistor at pin GEVZ GEVZ RGEVZ 20 50 kΩA
8.13 RDson of dynamic sinking
transistor at GEVZ GEVZ RGEVZ 28 ΩA
8.15 Voltage between pins OCEVZ
and GND to detect overcurrent OCEVZ VOCEVZ 0.475 0.525 V A
8.16 Maximum switch duty cycle
VK30 ≥ 8V or VEVZ ≥ 8V
(after startup)
VEVZ ≥8V
GEVZ DGEVZ 87.5 90 92.5 % A
8.17 Maximum switch duty cycle
4V < VK30 < 8V or
4V < VEVZ < 8V
(after startup)
GEVZ DGEVZ 75 90 92.5 % A
8.18 Minimum switch duty cycle GEVZ DGEVZ 0%A
8.19 Overvoltage at pin EVZ to switch
off the regulator
VEVZExt programmed
(via external divider) VEVZ VEVZ 40.5 46.2 V A
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter