Ata6264 [preliminary – Atmel ATA6264 User Manual
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4929B–AUTO–01/07
ATA6264 [Preliminary]
8.19a
Overvoltage at pin EVZ to switch
off the regulator
V
EVZ1
programmed
VEVZ
V
EVZ
25
28.5
V
A
8.19b
Overvoltage at pin EVZ to switch
off the regulator
V
EVZ2
programmed
VEVZ
V
EVZ
35
39.5
V
A
8.20 Overvoltage switch-off time
Time between reaching
overvoltage and
reaching 90% of the
value at numbers 8.7
and 8.8 of
GEVZ
t
offov
200
ns
D
8.21 Overcurrent switch-off time
Time between reaching
overcurrent and
reaching 90% of the
value at numbers 8.7
and 8.8 of
GEVZ
t
offoc
500
ns
A
8.22
Switch-on delay time for the
boost converter output stage
GEVZ
t
don
50
250
ns
A
8.23
Switch-on rise time for the boost
converter output stage
Time between 0.5V and
4.5V at GEVZ,
C
GEVZ
= 2 nF
GEVZ
t
ron
10
200
ns
A
8.24
Switch-off delay time for the
boost converter output stage
GEVZ
t
doff
50
150
ns
A
8.25
Switch-off fall time for the boost
converter output stage
Time between 4.5V and
0.5V at GEVZ,
C
GEVZ
= 2 nF
GEVZ
t
foff
10
100
ns
A
8.26 Leakage current at pin OCEVZ
OCEVZ
I
OCEVZ
–10
+10
µA
A
8.27 Leakage current at pin FBEVZ
FBEVZ
I
OCEVZ
–10
+10
µA
A
8.28 Switch-on threshold via FBEVZ
Band-gap tolerance
included
FBEVZ
V
FBEVZ
1.20
1.24
V
A
8.29 Switch-on threshold via FBEVZ
Band-gap tolerance
included
FBEVZ
V
FBEVZ
1.24
1.28
V
A
8.30 V
EVZ
voltage #1 set by SPI
V
EVZ1
programmed,
Band-gap tolerance
included
EVZ
V
EVZ1
20
23
V
A
8.31
V
EVZ
voltage #2
set by SPI
V
EVZ2
programmed,
Band-gap tolerance
included
EVZ
V
EVZ2
28.6
33
V
A
8.31a
Temperature shutdown
activation
T
off
155
185
°C
B
8.31b
Hysteresis for reactivation of
GEVZ
T
hys
5
25
K
B
Table 9-1.
Electrical Characteristics (Continued)– EVZ Step-up Regulator
No. Parameters
Test Conditions
Pin
Symbol
Min
Typ.
Max.
Unit
Type*
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter