Atmel ATA6264 - Manual (Page 36)

36
4929B–AUTO–01/07
ATA6264 [Preliminary]
Necessary for operation:
V
EVZ
= 5.5V to 40V or V
K30
= 5.5V to 40V, V
CP
> V
EVZ
+ 7V or V
CP
> V
K30
+ 7V,
V
PERI
> V
CORE
– 0.3V, V
INT
= 3.7V to 5.47V
Operating conditions of all other supply pins:
V
SAT
is within functional range limits, T
j
= –40°C to 150°C
Other pins:
As defined in
Section 4. ”Functional Range” on page 8 .
Table 12-1. Electrical Characteristics – VCORE Power Supply
No. Parameters Test Conditions Pin Symbol Min Typ. Max. Unit Type*
11.1
V
EVZ
voltage for the VCORE
regulator to start running
Initial programming:
V
VCORE
= 5V or 2.5V
EVZ V
EVZ
7.5 9 V A
11.1a
V
VPERI
voltage for the
VCORE regulator to start
running
Initial programming:
V
VCORE
= 1.88V
VPERI V
VPERI
1.25 1.7 V A
11.2
V
EVZ
voltage for the VCORE
regulator to stop running
Initial programming:
V
VCORE
= 5V or 2.5V
EVZ V
EVZ
5.5 6.2 V A
11.2a
Hysteresis at VPERI for the
VCORE regulator to stop
running
Initial programming:
V
VCORE
= 1.88V
VPERI V
HYS
50 150 mV A
11.3 Switch-on time via pin EVZ SVCORE t
SVCORE
0 20 µs A
11.4 Switch-off time via pin EVZ SVCORE t
SVCORE
0 10 µs A
11.5
Regulator switching
frequency See numbers 8.1 and 8.2
of
Table 9-1 on page 27
SVCORE f
SVCORE
A
11.6 Output current limit SVCORE I
SVCORE
0.7 0.9 A A
11.7 R
Dson
of output transistor SVCORE R
SVCORE
1.2
Ω
A
11.8 Output voltage #1
V
VCORE1
programmed,
band-gap tolerance
included VCORE V
VCORE1
–4% 5.0 +4% V A
11.9 Output voltage #2
V
VCORE2
programmed,
band-gap tolerance
included VCORE V
VCORE2
–4% 2.5 +4% V A
11.10 Output voltage #3
V
VCORE3
programmed,
band-gap tolerance
included VCORE V
VCORE3
–4% 1.88 +4% V A
11.11
Output transistor switch-on
time
Time between reaching
0.1
×
(V
K30max
– V
VCOREmin
)
and
0.9
×
(V
K30max
– V
VCOREmin
)
or
0.1
×
(V
EVZmax
– V
VCOREmin
)
and
0.9
×
(V
EVZmax
– V
VCOREmin
)
SVORE t
SVCOREon
150 ns A
*) 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 have to be prevented.
2. The value of the minimum load current must be higher than the internal pull-up current at pin VCORE to ensure proper
function of the regulator.