LTC2900_15 datasheet(10/16 Pages) LINER

Part #	LTC2900

Description	Programmable Quad Supply Monitor with Adjustable Reset Timer

Download	16 Pages

Scroll/Zoom	100%

Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

Logo

10 / 16 page

10

LTC2900

2900f

APPLICATIO S I FOR ATIO

Figure 6. Setting the Negative Adjustable Trip Point

–

+

2900 F06

V4

VREF

9

8

VTRIP

R4

1%

R3

1%

LTC2900

sensed and ground, is connected to the high impedance

noninverting inputs (V3, V4). The trip voltage is calculated

from:

VV

R

TRIP =+









05

1

3

4

.

In the negative adjustable mode, the noninverting input on

the V4 comparator is connected to ground (Figure 6). The

tap point on an external resistive divider, connected be-

tween the negative voltage being sensed and the VREF pin,

is connected to the high impedance inverting input (V4).

VREF provides the necessary level shift required to operate

at ground. The trip voltage is calculated from:

VV

R

V

V No

al

TRIP

REF

=









=

–

;

.

min

3

4

1 210

In a negative adjustable application, the minimum value

for R4 is limited by the sourcing capability of VREF (±1mA).

With no other load on VREF, R4 (minimum) is:

1.21V

÷ 1mA = 1.21kΩ.

Tables 2 and 3 offer suggested 1% resistor values for

various adjustable applications.

Table 2. Suggested 1% Resistor Values for the ADJ Inputs

VSUPPLY (V)

VTRIP (V)

R3 (k

Ω)

R4 (k

Ω)

12

11.25

2150

100

10

9.4

1780

100

8

7.5

1400

100

7.5

7

1300

100

6

5.6

1020

100

5

4.725

845

100

3.3

3.055

511

100

3

2.82

464

100

2.5

2.325

365

100

1.8

1.685

237

100

1.5

1.410

182

100

1.2

1.120

124

100

1

0.933

86.6

100

0.9

0.840

68.1

100

Table 3. Suggested 1% Resistor Values for the –ADJ Input

VSUPPLY (V)

VTRIP (V)

R3 (k

Ω)

R4 (k

Ω)

–2

–1.87

187

121

–5

–4.64

464

121

–5.2

–4.87

487

121

–10

–9.31

931

121

–12

–11.30

1130

121

Figure 5. Setting the Positive Adjustable Trip Point

–

+

– 0.5V

2900 F05

V3 OR V4

VTRIP

R3

1%

R4

1%

LTC2900

Similar Part No. - LTC2900_15

Manufacturer	Part #	Datasheet	Description
Linear Technology	LTC2900-1CDD	199Kb / 16P	Programmable Quad Supply Monitor with Adjustable Reset Timer
	LTC2900-1CMS	199Kb / 16P	Programmable Quad Supply Monitor with Adjustable Reset Timer
	LTC2900-1IDD	199Kb / 16P	Programmable Quad Supply Monitor with Adjustable Reset Timer
	LTC2900-1IMS	199Kb / 16P	Programmable Quad Supply Monitor with Adjustable Reset Timer

More results

Similar Description - LTC2900_15

Manufacturer	Part #	Datasheet	Description
Linear Technology	LTC2900	199Kb / 16P	Programmable Quad Supply Monitor with Adjustable Reset Timer
Linear Technology	LTC2902	179Kb / 16P	Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance
Linear Integrated Syste...	LTC2902	176Kb / 16P	Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance
Linear Technology	LTC2902	184Kb / 16P	Programmable Quad Supply Monitor with Adjustable Reset Timer and Supply Tolerance
	LTC2901	197Kb / 16P	Programmable Quad Supply Monitor with Adjustable Reset and Watchdog Timers
	LTC2901	210Kb / 16P	Programmable Quad Supply Monitor with Adjustable Reset and Watchdog Timers
	LTC2930	179Kb / 12P	Confi gurable Six Supply Monitor with Adjustable Reset Timer, Manual Reset
	LTC2930	169Kb / 12P	Confi gurable Six Supply Monitor with Adjustable Reset Timer, Manual Reset
	LTC2932	249Kb / 16P	Confi gurable Six Supply Monitor with Adjustable Reset Timer and Supply Tolerance
	LTC2932	245Kb / 16P	Confi gurable Six Supply Monitor with Adjustable Reset Timer and Supply Tolerance

More results

LTC2900 Datasheet(PDF) 10 Page - Linear Technology

LTC2900 Datasheet(HTML) 10 Page - Linear Technology

Similar Part No. - LTC2900_15

Similar Description - LTC2900_15

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Datasheet Download

Link URL