LP2986 datasheet(5/26 Pages) TI

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LP2986

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SNVS137H – MARCH 1999 – REVISED APRIL 2013

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.

Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 1 mA, COUT = 4.7 µF, CIN = 2.2 µF, VS/D = 2V.

LM2986AI-X.X(1)

LM2986I-X.X(1)

Symbol

Parameter

Conditions

Typical

Units

Min

Max

Min

Max

FEEDBACK PIN

VFB

1.21

1.25

1.20

1.26

1.23

Feedback Pin Voltage

1.20

1.26

1.19

1.27

See(5)

1.23

1.19

1.28

1.18

1.29

FB Pin Voltage

See(6)

ppm/°C

Temperature Coefficient

IFB

330

Feedback Pin Bias Current

IL = 200 mA

150

760

FB Pin Bias Current

See(6)

0.1

nA/°C

Temperature Coefficient

SHUTDOWN INPUT

VS/D

VH = O/P ON

1.4

1.6

S/D Input Voltage(7)

VL = O/P OFF

0.55

0.18

IS/D

VS/D = 0

−1

S/D Input Current

µA

VS/D = 5V

ERROR COMPARATOR

IOH

Output “HIGH” Leakage

VOH = 16V

0.01

µA

VOL

220

VIN = VO(NOM) − 0.5V,

Output “LOW” Voltage

150

IO(COMP) = 300 µA

350

VTHR

−5.5

−3.5

−5.5

−3.5

Upper Threshold Voltage

−4.6

(MAX)

−7.7

−2.5

−7.7

−2.5

VTHR

−8.9

−4.9

−8.9

−4.9

%VOUT

Lower Threshold Voltage

−6.6

(MIN)

−13.0

−3.3

−13.0

−3.3

HYST

Hysteresis

2.0

(5)

VFB ≤ VOUT ≤ (VIN − 1), 2.5V ≤ VIN ≤ 16V, 100 µA ≤ IL ≤ 200 mA, TJ ≤ 125°C.

(6)

Temperature coefficient is defined as the maximum (worst-case) change divided by the total temperature range.

(7)

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).

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