LT1790AIS6-3#TRMPBF Linear Technology, LT1790AIS6-3#TRMPBF Datasheet - Page 19
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LT1790AIS6-3#TRMPBF
Manufacturer Part Number
LT1790AIS6-3#TRMPBF
Description
IC REF LDO 3V MICROPOWER SOT23-6
Manufacturer
Linear Technology
Datasheet
1.LT1790BCS6-2.048TRMPBF.pdf
(26 pages)
Specifications of LT1790AIS6-3#TRMPBF
Reference Type
Series
Voltage - Output
3V
Tolerance
±0.05%
Temperature Coefficient
10ppm/°C
Voltage - Input
3.5 ~ 18 V
Number Of Channels
1
Current - Quiescent
60µA
Current - Output
5mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Fixed / Adjust / Prog
Precision
Output Voltage (max)
3V
Reference Voltage Accuracy (max)
0.05
Line Regulation
170ppm/V
Load Regulation
160ppm/mA
Input Voltage (max)
20V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
6
Package Type
TSOT-23
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Cathode
-
Lead Free Status / Rohs Status
Compliant
Other names
LT1790AIS6-3#PBF
LT1790AIS6-3#PBF
LT1790AIS6-3#PBF
Available stocks
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Part Number
Manufacturer
Quantity
Price
APPLICATIONS INFORMATION
Bypass and Load Capacitors
The LT1790 voltage references should have an input bypass
capacitor of 0.1μF or larger, however the bypassing of other
local devices may serve as the required component. These
references also require an output capacitor for stability.
The optimum output capacitance for most applications
is 1μF , although larger values work as well. This capaci-
tor affects the turn-on and settling time for the output to
reach its fi nal value.
All LT1790 voltages perform virtually the same, so the
LT1790-2.5 is used as an example.
V
Figure 4. LT1790-2.5 Sourcing and Sinking 0.5mA
GEN
3V
2V
1V
0V
Figure 1. Turn-On Characteristics of LT1790-2.5
3V
2V
V
3V
IN
1790 F01
1790 F04
Figure 3. Response Time Test Circuit
V
V
V
(AC COUPLED)
IN
OUT
OUT
C
0.1μF
IN
4
LT1790-2.5
1, 2
Figure 1 shows the turn-on time for the LT1790-2.5 with a
1μF input bypass and 1μF load capacitor. Figure 2 shows
the output response to a 0.5V transient on V
same capacitors.
The test circuit of Figure 3 is used to measure the stability
of various load currents. With R
a current step of 1mA. Figure 4 shows the response to a
± 0.5mA load. Figure 5 is the output response to a sourcing
step from 4mA to 5mA, and Figure 6 is the output response
of a sinking step from –4mA to –5mA.
6
V
Figure 2. Output Response to 0.5V Ripple on V
–2V
–3V
GEN
3V
2V
1V
0V
Figure 5. LT1790-2.5 Sourcing 4mA to 5mA
C
1μF
L
1k
V
GEN
1790 F03
1V
L
= 1k, the 1V step produces
1790 F02
1790 F05
LT1790
IN
V
V
V
(AC COUPLED)
IN
OUT
OUT
IN
with the
19
1790fb