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AS3685C
Datasheet
5 Characteristics
5.1 Absolute Maximum Ratings
Stresses beyond those listed in Table 1 may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated in Section 5
Electrical Characteristics is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Table 1 – Absolute Maximum Ratings
Symbol
V BATMAX
I IN
T STRG
V ESD
PT
P DERATE
T JUNC
T BODY
Parameter
Maximum Supply Voltage
Input Pin Current without causing
latchup
Storage Temperature Range
Humidity
Electrostatic Discharge
Total Continuous Power Dissipation
PT Derating Factor 2
Junction Temperature
Body Temperature during Soldering
Min
-0.3
-25
-55
5
-1000
Max
7.0
+25
125
85
1000
1.14
1.02
16.3
14.7
150
260
Unit
V
mA
° C
%
V
W
W
mW/
° C
mW/
° C
° C
° C
Note
At 25oC, Norm: Jedec 17
Non condensing
Norm: MIL 883 E Method 3015
DFN10 3x3mm, T A = 70 ° C 1
WL-CSP 2x1.5mm, T A = 70 ° C 1
DFN10 3x3mm
WL-CSP 2x1.5mm
according to IPC/JEDEC J-
STD-020
Notes:
1.
2.
Depending on actual PCB layout and PCB used; for peak power dissipation during flashing see
document ‘AS3685 Thermal Measurements’
For 1A flash current see application notes ‘AN3685_1Aflash’ and ‘AN3685_1Aflash_thermal_1v0’.
The PT derating factor changes the total continuous power dissipation, if the ambient temperature
is different to 70 ° C. Therefore for e.g. 85 ° C calculate PT 85 ° C = PT – P DERATE * (85 ° C – 70 ° C)
5.2 Operating Conditions
Table 2 – Operating Conditions
Symbol
VBAT
Parameter
Battery Supply Voltage
Min
3.0
Typ
3.6
Max
5.5
Unit
V
Note
Supply voltage range
VBATFUNC
I BAT
Battery Supply Voltage,
Functionally working
Operating Current
2.6
0.4
2.0
V
A
A
AS3685 functionally working,
but not all parameters fulfilled
Depending on load current
and charge pump mode
Limited lifetime, max 20,000s
T AMB
Ambient Temperature
-30
25
85
° C
I OFF
Off mode current
1.0
4.0
μ A
Mode setting=off;
VBAT<=4.2V
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