LP2986 Datasheet, PDF (5/14 Pages) National Semiconductor (TI) – Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage Regulator

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 = V_O(NOM) + 1V, I_L = 1 mA, C_OUT = 4.7 µF, C_IN = 2.2 µF, V_S/D = 2V.
Symbol
Parameter
Conditions
Typical
LM2986AI-X.X
(Note 6)
Min
Max
LM2986I-X.X
(Note 6)
Min
Max
Units
Output Voltage
(Note 9)
Temperature Coefficient
20
ppm/˚C
FEEDBACK PIN
V_FB
Feedback Pin Voltage
FB Pin Voltage
Temperature Coefficient
(Note 10)
(Note 9)
1.21
1.25
1.20
1.26
1.23
1.20
1.26
1.19
1.27
V
1.23
1.19
1.28
1.18
1.29
20
ppm/˚C
I_FB
Feedback Pin Bias
I_L = 200 mA
Current
150
330
760
330
nA
760
FB Pin Bias Current
(Note 9)
Temperature Coefficient
0.1
nA/˚C
SHUTDOWN INPUT
V_S/D
S/D Input Voltage
(Note 8)
I_S/D
S/D Input Current
ERROR COMPARATOR
I_OH
Output “HIGH” Leakage
V_H = O/P ON
V_L = O/P OFF
V_S/D = 0
V_S/D = 5V
V_OH = 16V
V_OL
V_THR
(MAX)
V_THR
(MIN)
HYST
Output “LOW” Voltage
Upper Threshold
Voltage
Lower Threshold
Voltage
Hysteresis
V_IN = V_O(NOM) − 0.5V,
I_O(COMP) = 300 µA
1.4
0.55
0
5
0.01
150
−4.6
−6.6
2.0
1.6
−5.5
−7.7
−8.9
−13.0
0.18
−1
15
1
2
220
350
−3.5
−2.5
−4.9
−3.3
1.6
−5.5
−7.7
−8.9
−13.0
0.18
−1
15
1
2
220
350
−3.5
−2.5
−4.9
−3.3
V
µA
µA
mV
%V_OUT
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, T_J(MAX), the junction-to-ambient thermal resistance, θ_J−A,
and the ambient temperature, T_A. The maximum allowable power dissipation at any ambient temperature is calculated using:
The value of θ_J−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 V_OUT 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 V_H and below V_L 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: V_FB ≤ V_OUT ≤ (V_IN − 1), 2.5V ≤ V_IN ≤ 16V, 100 µA ≤ I_L ≤ 200 mA, T_J ≤ 125˚C.
Note 11: See Typical Performance Characteristics curves.
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