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| ATA6264_14 Datasheet, PDF (38/83 Pages) ATMEL Corporation – One Programmable/Adjustable Boost Converter | |||
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Table 12-1. Electrical Characteristics (Continued)â VCORE Power Supply
No. Parameters
Test Conditions
Pin
Symbol Min Typ. Max. Unit Type*
11.25 Leading-edge blanking time
11.26
Slope of artificial ramp for
slope compensation
tblank
dV/dt
150
80(1)
200
ns
D
150(1) mV/µs D
Voltage level at K30 to switch VK30 increasing
11.27
VCORE supply from EVZ to
K30 (VVCORE = 1.8V or 2.5V
See number 7.3 of Table
8-2 on page 23
A
programmed)
Hysteresis at K30 to switch
VCORE supply from K30 to VK30 decreasing
11.28 EVZ
See number 7.4 of Table
A
(VVCORE = 1.8V or 2.5V
programmed)
8-2 on page 23
11.29
Voltage level at K30 to switch
VCORE supply from EVZ to
K30 (VVCORE = 5V
VK30 increasing
programmed)
K30
VK30
6.1
8.1
V
A
11.30
Hysteresis at K30 to switch
VCORE supply from K30 to
EVZ (VVCORE = 5V
programmed)
VK30 decreasing
K30
VK30
0.5
1
V
A
Time to switch VCORE
11.31 supply from EVZ to K30 or
K30 to EVZ
SVCORE
tswitch
0
7.6
µs
D
11.32
VCORE loss-detection
threshold(2)
VCORE
ILoad
0
1
mA D
*) 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.
38 ATA6264 [Preliminary]
4929BâAUTOâ01/07
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