LTC2964 datasheet(3/20 Pages) AD

3 / 20 page

LTC2962/LTC2963/LTC2964

Rev 0

For more information www.analog.com

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 3.3V, DVCC = 0V, MR = RDIS = VCC, unless otherwise specified.

(Note 2)

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VCC Operating Range

2.25

5.5

Guaranteed RST Output Low

VCC Rising

VCCMINC Minimum Required for Configuration

VCC Rising

2.2

IVCC

VCC Input Supply Current

140

210

µA

DVCC Operating Range

1.6

5.5

DVCC Input Supply Current

IRST = 0, IWDO = 0

500

VRT50

5V, –4% Reset Threshold

5V, –6% Reset Threshold

4.775

4.675

4.8

4.7

4.825

4.725

VRT33

3.3V, –4% Reset Threshold

3.3V, –6% Reset Threshold

3.152

3.087

3.168

3.102

3.185

3.119

VRT25

2.5V, –4% Reset Threshold

2.5V, –6% Reset Threshold

2.388

2.338

2.4

2.35

2.413

2.363

VRT18

1.8V, –4% Reset Threshold

1.8V, –6% Reset Threshold

1.719

1.683

1.728

1.692

1.737

1.701

VRT15

1.5V, –4% Reset Threshold

1.5V, –6% Reset Threshold

1.433

1.403

1.44

1.41

1.448

1.418

VRT12

1.2V, –4% Reset Threshold

1.2V, –6% Reset Threshold

1.146

1.122

1.152

1.128

1.158

1.134

VRT10

1.0V, –4% Reset Threshold

1.0V, –6% Reset Threshold

0.955

0.935

0.96

0.94

0.965

0.945

VRTA

±ADJ Reset Threshold

497.5

500

502.5

VREF

Reference Voltage

VCC = 2.25V to 5.5V, IREF = ±1mA,

CREF ≤ 1000pF

1.183

1.195

1.207

VPG

PG1 to PG4 Configuration Voltage Range

VCC > VCCMINC

VREF

IMON

Monitor Input Current for V1 - V4

±ADJ Modes (Vn = 0.5V)

±15

RMON

Monitor Input Resistance for V1 - V4

All Modes Except ±ADJ

0.8

1.2

1.6

MΩ

tUV

Comparator Propagation Delay to RST

or OUTn Falling Edge

Overdrive = 10%

µs

RT and WT Pull-Up Current

V = GND

–1.5

–2

–2.5

µA

RT and WT Pull-Down Current

V = 1.3V

1.5

2.5

µA

tRST

Reset Timeout Period

CRT = 1500pF

VRT = VCC

160

200

240

Internal Timer Select Level (WT and RT)

VCC – 0.1

VCC-Detect Current in Internal Timer Mode (WT and RT) V = VCC

µA

LTC2963 Watchdog

tWDU

Watchdog Upper Timeout Period

CWT = 1500pF

WT Tied to VCC

100

1.3

150

1.6

200

tWD(INIT) Initial Watchdog Timeout Period

WDS = Logic Low

WDS = Open

WDS = Logic High

tWDU

8 • tWDU

64 • tWDU

VWDS

WDS Input Level

(VCC = 2.25 to 5.5V)

Logic Low

Open

Logic High

0.7

VCC – 0.3

1.3

0.4

VCC – 0.7

LTC2964 Datasheet(PDF) 3 Page - Analog Devices

LTC2964 Datasheet(HTML) 3 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Datasheet Download

Link URL