MAX6791TP datasheet(5/25 Pages) MAXIM

Part #	MAX6791TP

Description	High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions

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Manufacturer	MAXIM [Maxim Integrated Products]

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High-Voltage, Micropower, Single/Dual Linear

Regulators with Supervisory Functions

_______________________________________________________________________________________

5

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 14V, CIN = 1µF, COUT = 10µF, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = TJ = +25°C.)

(Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RESET OUTPUT

L

4.500

4.625

4.750

M

4.250

4.375

4.500

T

2.970

3.053

3.135

S

2.805

2.888

2.970

Z

2.250

2.313

2.375

Y

2.125

2.188

2.250

W

1.620

1.665

1.710

Reset Threshold (Preset Output

Voltage)

SET/SET1 = GND

V

1.530

1.575

1.620

V

L/T/Z/W

0.90 x

VOUT

0.925 x

VOUT

0.95 x

VOUT

Reset Threshold (Adjustable

Output Voltage)

M/S/Y/V

0.85 x

VOUT

0.875 x

VOUT

0.90 x

VOUT

V

OUT to Reset Delay

VOUT1/VOUT falling

35

µs

D0

35

µs

D1

2.187

3.125

4.063

D2

8.75

12.5

16.25

D3

35

50

65

Reset Timeout Period

(CSRT = OUT/OUT1)

tRP

VOUT1/VOUT rising

D4

140

200

260

ms

CSRT Ramp Current

800

1000

1250

nA

CSRT Ramp Threshold

1.185

1.218

1.255

V

WATCHDOG INPUT

CSWT = OUT/OUT1 (fixed)

280.0

400.0

520.0

Normal Watchdog Timeout Period

tWD2

CSWT = 1500pF (adjustable)

170

236.2

290

ms

CSWT = OUT/OUT1 (fixed)

37.5

50.0

62.5

Fast Watchdog Timeout Period

SET Ratio = 8

tWD1

CSWT = 1500pF (adjustable)

21.95

29.52

36.90

ms

CSWT = OUT/OUT1 (fixed)

18.75

25.0

31.25

Fast Watchdog Timeout Period

SET Ratio = 16

tWD1

CSWT = 1500pF (adjustable)

10.80

14.76

18.45

ms

CSWT = OUT/OUT1 (fixed)

4.68

6.25

7.81

Fast Watchdog Timeout Period

SET Ratio = 64

tWD1

CSWT = 1500pF (adjustable)

2.52

3.69

4.62

ms

Fast Watchdog Minimum Period

tWD0

2000

ns

CSWT Ramp Current

Adjustable timeout

800

1000

1250

nA

CSWT Ramp Threshold

Adjustable timeout

1.185

1.218

1.255

V

Undercurrent Threshold for

Watchdog Enable

7.0

10

13.8

mA

Undercurrent Threshold for

Watchdog Disable

357

mA

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