NCV8508DW50 Ver la hoja de datos (PDF) - ON Semiconductor

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NCV8508DW50

5.0 V, 250 mA LDO with Watchdog and RESET

ON Semiconductor 

NCV8508

ELECTRICAL CHARACTERISTICS (-40°C ≤ TJ ≤ 125°C; 6.0 V ≤ VIN ≤ 28 V, 100 mA ≤ IOUT ≤ 150 mA, C2 = 1.0 mF, RDelay = 60 k;

unless otherwise specified.)

Characteristic

Test Conditions

Min

Typ

Max

Unit

OUTPUT

Output Voltage

Dropout Voltage (VIN - VOUT)

Load Regulation

Line Regulation

Current Limit

Thermal Shutdown

Quiescent Current

RESET

Threshold

Output Low

Output High

Delay Time

WATCHDOG INPUT

Threshold High

Threshold Low

Hysteresis

Input Current

Pulse Width

-

IOUT = 150 mA. Note 4

VIN = 14 V, 100 mA ≤ IOUT ≤ 150 mA

6.0 V ≤ VIN ≤ 28 V, IOUT = 5.0 mA

-

Guaranteed by Design

VIN = 12 V, IOUT = 150 mA, (see Figure 6)

4.85

-

-

-

250

150

-

5.00

5.15

V

450

900

mV

5.0

30

mV

5.0

50

mV

400

-

mA

180

210

°C

100

150

mA

-

4.50

4.65

4.80

V

RLOAD = 10 k to VOUT, VOUT ≥ 1.0 V

RLOAD = 5.1 k to VOUT, VOUT ≥ 1.0 V

-

0.2

0.4

V

0.4

0.8

RLOAD = 10 k to GND

RLOAD = 5.1 k to GND

VOUT - 0.5 VOUT - 0.25

-

V

VOUT - 1.0 VOUT - 0.5

VIN = 14 V, RDelay = 60 k, IOUT = 5.0 mA

2.0

VIN = 14 V, RDelay = 120 k, IOUT = 5.0 mA

-

3.0

4.0

ms

6.0

-

ms

-

-

-

WDI = 6.0 V

50% WDI falling edge to

50% WDI rising edge and

50% WDI rising edge to

50% WDI falling edge, (see Figure 5)

70

-

-

%VOUT

-

-

30

%VOUT

-

100

-

mV

-

0.1

+10

mA

5.0

-

-

ms

WAKEUP OUTPUT (VIN = 14 V, IOUT = 5.0 mA)

Wakeup Period

See Figures 4 and 5, RDELAY = 60 k

See Figures 4 and 5, RDELAY = 120 k

Wakeup Duty Cycle Nominal

See Figure 3

18

25

32

ms

-

50

-

ms

45

50

55

%

RESET HIGH to

Wakeup Rising Delay Time

RDELAY = 60 k

50% RESET rising edge to

50% Wakeup edge, RDELAY = 120 k

(see Figures 3 and 4)

9.0

12.5

16

ms

-

25

-

ms

Wakeup Response to

Watchdog Input

50% WDI falling edge to

50% Wakeup falling edge

-

0.1

5.0

ms

Wakeup Response to RESET

Output Low

Output High

50% RESET falling edge to

50% Wakeup falling edge.

VOUT = 5.0 V→ 4.5 V

RLOAD = 10 k to VOUT, VOUT ≥ 1.0 V

RLOAD = 5.1 k to VOUT, VOUT ≥ 1.0 V

RLOAD = 10 k to GND

RLOAD = 5.1 k to GND

-

0.1

5.0

ms

-

0.2

0.4

V

0.4

0.8

VOUT - 0.5 VOUT - 0.25

-

V

VOUT - 1.0 VOUT - 0.5

DELAY

Output Voltage

IDELAY = 50 mA. Note 5

-

1.25

-

V

4. Measured when the output voltage has dropped 100 mV from the nominal value. (see Figure 12)

5. Current drain on the Delay pin directly affects the Delay Time, Wakeup Period, and the RESET to Wakeup Delay Time.

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