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ADM1041
TRIM TABLE
This table shows all of the trims that can be set in the ADM1041.
Table 44.
Description
Set Load Voltage. Trim output from
Name
load_v
Range
1.7 V–2.3 V
Steps
255
Step Size
1.74 mV–3.18 mV
Reg
19h
Bit No.
7–0
differential amplifier to set voltage at load.
(at input pins)
Set Load OV. Trim calibrated output from
load_ov
105%–120%
255
1.6 mV
08h
7–0
remote sense amplifier to set load OV
threshold.
Offset input
Set False UV Clamp Threshold. Fine trim
uv_clamp
1.3 V–2.1 V
255
1.94 mV–5.07 mV
18h
7–0
output to set voltage before OR-FET in case
of load OV (at input pins).
Set Local UVP Threshold. Fine trim output
local_uvp
1.3 V–2.1V
255
1.94 mV–5.07 mV
09h
7–0
from local sense buffer to set UVP
threshold (at input pins).
Set Local OVP Threshold. Fine trim output
local_ovp
1.9 V–2.85 V
255
2.48 mV–5.59 mV
0Ah
7–0
from sense buffer to set OVP threshold (at
input pins).
External Divider Offset Trim Range.
os_
div_range
±5 mV
20 μV
16h
5-3
±10 mV
±20 mV
39 μV
78 μV
External Divider Offset Trim. Trim out offset
os_div
255
14h
7–0
due to resistor divider tolerances.
DC Offset Trim Range.
os_dc_range
±8 mV
30 μV
17h
3–0
±15 mV
±30 mV
60 μV
120 μV
Current Sense DC Offset Trim. Trim out
os_dc
255
15h
7–0
amplifier dc offset.
Calibrate Current Sense Range. Differential
I SENSE _range
9.5 to 12.0 mV
16h
2–0
sense input, six ranges configurable.
12.0 to 16.0 mV
16.0 to 20.0 mV
20.0 to 26.0 mV
26.0 to 34.0 mV
34.0 to 44.5 mV
Current Transformer Gain Range.
ct_range
0.45 to 0.68 V
17h
5
0.79 to 1.2 V
Calibrate Current Sense. I SHARE = 2.0 V.
I SHARE _slope
127
8 mV (at SHRO)
06h
7–1
Current Share Offset. Trim offset to be
I SHARE _offset
0 to 1.25 V (at SHRO)
255
5.5 mV
05h
7–0
added to I SHARE output.
Current Limit Trim. Current sense level
curr_limit
105%–130% (SHRO
31
26 mV (at SHRO)
04h
7–3
where current limiting will start.
2.1 V–2.6 V)
OTP Sense Threshold.
otp_trim (at
2.1 V–2.5 V
15
27 mV
0Bh
7–4
input pins)
Set AC Sense Threshold.
Set AC Sense Hysteresis.
acsns_thresh
acsns_hyst
1.10 V–1.45 V
200 mV–550 mV
31
7
14 mV
50 mV
0Ch
0Ch
7–3
2–0
Rev. A | Page 54 of 64
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