LT6660HCDC-2.5#TRMPBF Linear Technology, LT6660HCDC-2.5#TRMPBF Datasheet - Page 10

• Manufacturer Part Number: LT6660HCDC-2.5#TRMPBF
• Description: IC REF PREC SERIES 2.5V 3-DFN
• Manufacturer: Linear Technology

Specifications of LT6660HCDC-2.5#TRMPBF

• Reference Type: Series
• Voltage - Output: 2.5V
• Tolerance: ±0.2%
• Temperature Coefficient: 20ppm/°C
• Voltage - Input: 3.4 ~ 20 V
• Number Of Channels: 1
• Current - Quiescent: 145µA
• Current - Output: 40mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 3-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Cathode: -
• Other names: LT6660HCDC-2.5#TRMPBF; LT6660HCDC-2.5#TRMPBFTR

APPLICATIO S I FOR ATIO
LT6660
Output Accuracy
Like all references, either series or shunt, the error budget
of the LT6660s is made up of primarily three components:
initial accuracy, temperature coefficient and load regulation.
Line regulation is neglected because it typically contributes
only 150ppm/V. The LT6660s typically shift 0.02% when
soldered into a PCB, so this is also neglected. The output
errors are calculated as follows for a 100µA load and 0°C
to 70°C temperature range:
LT6660HCDC
Initial Accuracy = 0.2%
For I
For Temperature 0°C to 70°C the maximum ΔT = 70°C
10
ΔV
ΔV
OUT
OUT
OUT
= 100µA
= (4000ppm/mA)(0.1mA) = 0.04%
= (20ppm/°C)(70°C) = 0.14%
U
U
W
U
Total worst-case output error is:
Table 2 gives the worst-case accuracy for LT6660HC,
LT6660JC and LT6660KC from 0°C to 70°C, and shows
that if the LT6660HC is used as a reference instead of a
regulator, it is capable of 8 bits of absolute accuracy over
temperature without a system calibration.
Table 2. Worst-Case Output Accuracy over Temperature
100µA
10mA
20mA
I
0µA
0.2% + 0.04% + 0.14% = 0.380%
OUT
LT6660HCDC
0.340%
0.380%
0.640%
0.540%
LT6660JCDC
0.540%
0.580%
0.840%
0.740%
LT6660KCDC
0.850%
0.890%
1.15%
1.05%
6660fa