6.0V

≤ V

Symbol

Parameter

Conditions

Min

Max

Units

RESET OUTPUT

V

THRL

Low Switching Threshold

V

4.45

4.75

V

V

THRH

High Switching Threshold

V

5.40

5.75

V

V

LOW

Logic Low Output Voltage

1V

≤ V

R

0.4

V

V

HIGH

Logic High Output Voltage

Normal Operation,

V

V

50 mV

V

MAIN

V

R

P-U

Internal Output Pull-Up Resistance

2.4

6.0

k

Ω

T

DELAY

Reset Delay Interval

C

I

Capacitor is Typically 6 µA

35

70

ms

T

RISE

Output Rise Time

From 10% V

C

1.5

µs

T

FALL

Output Fall Time

From 90% V

C

0.5

µs

CONTROL INPUTS

V

ON

ON Threshold for ON/OFF Input

R

3.5

4.5

V

V

OFF

OFF Threshold for ON/OFF Input

R

1.5

2.5

V

I

ON/OFF

ON/OFF Input Current

1.4V

≤ V

1

12

µA

−0.3V

≤ V

−1

5

mA

ON

K-A

Turn ON Threshold for Keep Alive

Input

2V

OFF

K-A

Turn OFF Threshold for Keep Alive

Input

(Note 3)

0.8

V

R

P-D

Pull-Down Resistance at Keep

Alive Input

0V

≤ V

540

k

Ω

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device re-

mains functional but do not guarantee specific performance limits. For guaranteed specifications and test conditions see the Electrical Characteristics.

Note 2: Human body model, 150 pF capacitor discharged through a 1.5 k

Ω resistor.

Note 3: If either control input is left open circuited the regulators will turn OFF.

Note 4: The input quiescent current will increase when the regulators are in dropout conditions. The amount of additional input currents is a direct function of the total

load current on both outputs. The peak increase in current is limited to 50% of the total load current.

Note 5: The dropout voltage specifications actually indicate the saturation voltage of the PNP power transistors used in each regulator. Over the full load current and

temperature ranges both regulators will output at least 4.7V with an input voltage of only 5.5V.

Note 6: The ON/OFF input is internally clamped to a 7V zener diode througha1k

Ω resistor.

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