Datasheet

LP2950-N, LP2951-N
SNVS764N –JANUARY 2000–REVISED MAY 2013 www.ti.com
ELECTRICAL CHARACTERISTICS
(1)
LP2950AC-XX LP2950C-XX
LP2951
LP2951AC-XX LP2951C-XX
Parameter Conditions
(1)
Units
Typ Tested Typ Tested Design Typ Tested Design
Limit
(2)(3)
Limit
(2)
Limit
(4)
Limit
(2)
Limit
(4)
3V Versions
(5)
Output Voltage T
J
= 25°C 3.0 3.015 3.0 3.015 3.0 3.030 V max
2.985 2.985 2.970 V min
−25°C ≤ T
J
≤ 85°C 3.0 3.0 3.030 3.0 3.045 V max
2.970 2.955 V min
Full Operating Temperature 3.0 3.036 3.0 3.036 3.0 3.060 V max
Range
2.964 2.964 2.940 V min
Output Voltage 100 μA ≤ I
L
≤ 100 mA 3.0 3.045 3.0 3.042 3.0 3.072 V max
T
J
≤ T
JMAX
2.955 2.958 2.928 V min
3.3V Versions
(5)
Output Voltage T
J
= 25°C 3.3 3.317 3.3 3.317 3.3 3.333 V max
3.284 3.284 3.267 V min
−25°C ≤ T
J
≤ 85°C 3.3 3.3 3.333 3.3 3.350 V max
3.267 3.251 V min
Full Operating Temperature 3.3 3.340 3.3 3.340 3.3 3.366 V max
Range
3.260 3.260 3.234 V min
Output Voltage 100 μA ≤ I
L
≤ 100 mA 3.3 3.350 3.3 3.346 3.3 3.379 V max
T
J
≤ T
JMAX
3.251 3.254 3.221 V min
5V Versions
(5)
Output Voltage T
J
= 25°C 5.0 5.025 5.0 5.025 5.0 5.05 V max
4.975 4.975 4.95 V min
−25°C ≤ T
J
≤ 85°C 5.0 5.0 5.05 5.0 5.075 V max
4.95 4.925 V min
Full Operating Temperature 5.0 5.06 5.0 5.06 5.0 5.1 V max
Range
4.94 4.94 4.9 V min
Output Voltage 100 μA ≤ I
L
≤ 100 mA 5.0 5.075 5.0 5.075 5.0 5.12 V max
T
J
≤ T
JMAX
4.925 4.925 4.88 V min
All Voltage Options
Output Voltage See
(6)
20 120 20 100 50 150 ppm/°C
Temperature
Coefficient
Line Regulation
(7)
(V
O
NOM + 1)V ≤ V
in
≤ 0.03 0.1 0.03 0.1 0.04 0.2 % max
30V
(8)
0.5 0.2 0.4 % max
(1) Unless otherwise noted, all limits specified for V
IN
= (V
ONOM
+ 1)V, I
L
= 100 μA and C
L
= 1μF for 5V versions and 2.2 μF for 3V and
3.3V versions. Limits appearing in boldface type apply over the entire junction temperature range for operation. Limits appearing in
normal type apply for T
A
= T
J
= 25°C. Additional conditions for the 8-pin versions are FEEDBACK tied to V
TAP
, OUTPUT tied to SENSE,
and V
SHUTDOWN
≤ 0.8V.
(2) Ensured and 100% production tested.
(3) A Military RETS specification is available on request. At time of printing, the LP2951-N RETS specification complied with the boldface
limits in this column. The LP2951-N LMC, NAC, or NAB may also be procured as Standard Military Drawing Spec #5962-3870501MGA,
MXA, or MPA.
(4) Ensured but not 100% production tested. These limits are not used to calculate outgoing AQL levels.
(5) All LP2950 devices have the nominal output voltage coded as the last two digits of the part number. In the LP2951 products, the 3.0V
and 3.3V versions are designated by the last two digits, but the 5V version is denoted with no code at this location of the part number
(refer to ordering information table).
(6) Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
(7) Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to
heating effects are covered under the specification for thermal regulation.
(8) Line regulation for the LP2951-N is tested at 150°C for I
L
= 1mA. For I
L
= 100 μA and T
J
= 125°C, line regulation is specified by design
to 0.2%. See TYPICAL PERFORMANCE CHARACTERISTICS for line regulation versus temperature and load current.
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