LTC2912

5

2912fa

Reset Time-Out Period

vs Capacitance

TYPICAL PERFORMANCE CHARACTERISTICS

UV/OV, Voltage Output Low

vs Output Sink Current

Reset Timeout Period

vs Temperature

DIS (Pin 8/Pin 1, LTC2912-2): Output Disable Input.

Disables the OV and UV output pins. When DIS is pulled

high, the OV and UV pins are not asserted except during a

UVLO condition. Pin has a weak (2μA) internal pull-down

to GND. Leave pin open if unused.

Exposed Pad (Pin 9, DDB Package): Exposed Pad may

be left open or connected to device ground.

GND (Pin 5/Pin 4): Device Ground.

LATCH (Pin 8/Pin 1, LTC2912-1, LTC2912-3): OV/OV

Latch Clear/Bypass Input. When pulled high, OV/OV latch

is cleared. While held high, OV/OV has a similar delay and

output characteristic as UV.

OV (Pin 6/Pin 3, LTC2912-1, LTC2912-2): Overvoltage

Logic Output. Asserts low when the VL input voltage is

above threshold. Latched low (LTC2912-1). Held low for

programmed delay time after VL input is valid (LTC2912-2).

using an external pull-up. Leave pin open if unused.

0

3

4

5

4

2912 G07

2

1

0

1

2

3

5

VH = 0.55V

10

100

1000

10000

0.1

10

100

1000

2912 G08

1

1

0

3

4

5

4

2912 G09

2

1

0

1

2

3

5

VH = 0.45V

UV AT 150mV

UV AT 50mV

0

0

0.2

0.4

0.6

0.8

1.0

5

10

15

20

1912 G10

25

–40°C

30

25°C

85°C

TEMPERATURE (°C)

–50

6

7

8

9

10

12

–25

025

50

2912 G11

75

100

11