Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

V

−0.3V to +6V

Reset Voltage

−0.3V to +6V

Output Current (Reset)

10 mA

Operating Temperature Range

LP3470

−20˚C to +85˚C

LP3470I

−40˚C to +85˚C

Junction Temperature (T

125˚C

Power Dissipation (T

2)

300 mW

θ

JA (Note 2)

280˚C/W

Storage Temp. Range

−65˚C to +150˚C

Lead Temp. (Soldering, 5 sec)

260˚C

ESD Rating (Note 3)

2 kV

Electrical Characteristics

Limits in standard typeface are for T

less otherwise specified. V

Symbol

Parameter

Conditions

Typ

(Note

4)

Min

(Note

5)

Max

(Note

5)

Units

V

CC

Operating Voltage Range

0.5

5.5

V

I

CC

V

V

16

30

µA

V

RTH

Reset Threshold Voltage (Note 6)

LP3470

V

RTH

0.99

V

RTH

0.99

V

RTH

1.01

V

RTH

1.01

V

RTH

V

LP3470I

V

RTH

0.99

V

RTH

0.985

V

RTH

1.01

V

RTH

1.015

V

RTH

V

HYST

Hysteresis Voltage (Note 7)

35

15

65

mV

t

PD

V

V

100

300

µs

t

RP

Reset Timeout Period (Note 8)

C

2

1.0

3.5

ms

V

OL

Reset Output Voltage Low

V

0.1

V

V

0.1

V

0.4

R

1

External Pull-up Resistor

20

0.68

68

k

Ω

I

LEAK

Reset Output Leakage Current

0.15

1

µA

6

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device

beyond its operating conditions.

number given in the Absolute Maximum Ratings, whichever is lower.

Note 3: The Human Body Model is a 100 pF capacitor discharged through a 1.5 k

Ω resistor into each pin.

Note 4: Typical numbers are at 25˚C and represent the most likely parametric norm.

Note 5: Min. and Max. limits in standard typeface are 100% production tested at 25˚C. Min. and Max. limits in boldface are guaranteed through correlation using

Statistical Quality Control (SQC) methods. The limits are used to calculate National’s Average Outgoing Quality Level (AOQL).

Note 6: Factory-trimmed reset thresholds are available in 50 mV increments from 2.4V to 5.0V. Contact your National Semiconductor representative.

www.national.com

3