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ADM1041
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
LOCAL VOLTAGE SENSE, V LS ,
AND FALSE UV CLAMP
See Figure 9.
Input Voltage Range 3
Stage Gain
2.3
1.3
V DD –2
V
Set by external resistor divider.
At V LS = 1.8 V
False UV Clamp, V LS , Input Voltage Nominal,
1.3
1.85
2.1
V
and Trim Range
Clamp Trim Step
Clamp Trim Step
0.2
3.1
%
mV
V RANGE
8 bits, 255 steps, Reg 18h[7:0].
See Table 33.
Local Overvoltage
1.9
2.4
2.85
V
Nominal and Trim Range
OV Trim Step
OV Trim Step
0.15
3.7
%
mV
V RANGE
8 bits, 255 steps Reg 0Ah[7:0].
See Table 33.
Noise Filter, for OVP Function Only
5
25
μs
Local Undervoltage
1.3
1.7
2.1
V
Nominal and Trim Range
UV Trim Step
UV Trim Step
0.18
3.1
%
mV
V RANGE
8 bits, 255 steps, Reg 09h[7:0].
See Table 18.
Noise Filter, for UVP Function Only
VOLTAGE ERROR AMPLIFIER, V CMP
300
600
μs
See Figure 14.
Reference Voltage V REF_SOFT_START
Temperature Stability 2
Long-Term Voltage Stability 2
Soft-start Period Range
Set Soft-start Period
Unity Gain Bandwidth, GBW
1.49
0
±100
±0.2
300
10
20
40
1
1.51
40
V
μV/°C
%
ms
μs
ms
ms
ms
MHz
T A = 25°C
?40°C ≤ T A ≤ 85°C
Over 1,000 hr, T J = 125°C
Ramp is 7 bit, 127 steps
Reg 10h[3:2] = 00. See Table 25.
Reg 10h[3:2] = 01. See Table 25.
Reg 10h[3:2] = 10. See Table 25.
Reg 10h[3:2] = 11. See Table 25.
See Figure 11.
Transconductance
Source Current
Sink Current
1.9
250
250
2.7
3.5
mA/V
μA
μA
At I VCMP = ±180 μA
At V VCMP > 1 V
At V VCMP < V DD ? 1 V
DIFFERENTIAL CURRENT SENSE INPUT,
C S ?, C S +
Reg 17h[7] = 0. See Table 18.
I SENSE mode. See Figure 13.
Common-Mode Range
External Divider Tolerance Trim Range
0
?5
V DD –2
V
mV
Set by external divider
Reg 16h[5:3] = 000. See Table 31.
(with respect to input)
?10
?20
5
10
20
mV
mV
mV
mV
mV
Reg 16h[5:3] = 001. See Table 31.
Reg 16h[5:3] = 010. See Table 31.
Reg 16h[5:3] = 100. See Table 31.
Reg 16h[5:3] = 101. See Table 31.
Reg 16h[5:3] = 110. See Table 31.
External Divider Tolerance Trim Step Size
(with respect to input)
20
39
78
μV
μV
μV
V CM = 2.0 V
8 bits, 255 steps
Reg 14h[7:0]. See Table 29.
Rev. A | Page 7 of 64
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