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LP2986 Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LP2986
Description  Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage Regulator
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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Electrical Characteristics (Continued)
Limits in standard typeface are for T
J = 25˚C, and limits in boldface type apply over the full operating temperature range. Un-
less otherwise specified: V
IN =VO(NOM) + 1V, IL = 1 mA, COUT = 4.7 µF, CIN = 2.2 µF, VS/D = 2V.
Symbol
Parameter
Conditions
Typical
LM2986AI-X.X
(Note 6)
LM2986I-X.X
(Note 6)
Units
Min
Max
Min
Max
Output Voltage
Temperature Coefficient
(Note 9)
20
ppm/˚C
FEEDBACK PIN
V
FB
Feedback Pin Voltage
1.23
1.21
1.25
1.20
1.26
V
1.20
1.26
1.19
1.27
(Note 10)
1.23
1.19
1.28
1.18
1.29
FB Pin Voltage
Temperature Coefficient
(Note 9)
20
ppm/˚C
I
FB
Feedback Pin Bias
Current
I
L = 200 mA
150
330
330
nA
760
760
FB Pin Bias Current
Temperature Coefficient
(Note 9)
0.1
nA/˚C
SHUTDOWN INPUT
V
S/D
S/D Input Voltage
(Note 8)
V
H = O/P ON
1.4
1.6
1.6
V
V
L = O/P OFF
0.55
0.18
0.18
I
S/D
S/D Input Current
V
S/D =0
0
−1
−1
µA
V
S/D =5V
5
15
15
ERROR COMPARATOR
I
OH
Output “HIGH” Leakage
V
OH = 16V
0.01
11
µA
22
V
OL
Output “LOW” Voltage
V
IN =VO(NOM) − 0.5V,
I
O(COMP) = 300 µA
150
220
220
mV
350
350
V
THR
(MAX)
Upper Threshold
Voltage
−4.6
−5.5
−3.5
−5.5
−3.5
%V
OUT
−7.7
−2.5
−7.7
−2.5
V
THR
(MIN)
Lower Threshold
Voltage
−6.6
−8.9
−4.9
−8.9
−4.9
−13.0
−3.3
−13.0
−3.3
HYST
Hysteresis
2.0
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the de-
vice outside of its rated operating conditions.
Note 2: The ESD rating of the Feedback pin is 500V and the Tap pin is 1.5 kV.
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(MAX), the junction-to-ambient thermal resistance, θJ−A,
and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using:
The value of
θJ−A for the SO-8 (M) package is 160˚C/W, and the mini SO-8 (MM) package is 200˚C/W. Exceeding the maximum allowable power dissipation will cause
excessive die temperature, and the regulator will go into thermal shutdown.
Note 4: If used in a dual-supply system where the regulator load is returned to a negative supply, the LM2986 output must be diode-clamped to ground.
Note 5: The output PNP structure contains a diode between the V IN and VOUT terminals that is normally reverse-biased. Forcing the output above the input will turn
on this diode and may induce a latch-up mode which can damage the part (see Application Hints).
Note 6: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 7: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a 1V differential.
Note 8: To prevent mis-operation, the Shutdown input must be driven by a signal that swings above VH and below VL with a slew rate not less than 40 mV/µs (see
Application Hints).
Note 9: Temperature coefficient is defined as the maximum (worst-case) change divided by the total temperature range.
Note 10: VFB ≤ VOUT ≤ (VIN − 1), 2.5V ≤ VIN ≤ 16V, 100 µA ≤ IL ≤ 200 mA, TJ ≤ 125˚C.
Note 11: See Typical Performance Characteristics curves.
www.national.com
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