ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Max Bat.Trans.

0Ω

6

V

°C;

all temps

4.85

4.75

5

5

6

5.15

5.25

V

V

V

Rev. Voltage Trans.

0Ω

°C;

all temps

4.85

4.75

5

5

5.15

5.25

V

V

Rev. Voltage .

Ω

-0.4

1

V

Ripple rejection

50

dB

50

dB

Output Noise (design only)

Check output for AC noise

using A weighted filter (20-

20KHz)

200

µV

Check output for AC noise

using 100kHz LP (20-100KHz)

400

µV

ON/OFF

Input Current

-10

1

µA

µA

Input Threshold

0

2

0.8

5

V

V

Reset Output Voltage Set

0

0.4

V

2.75

5

V

Reset and LVW Output Rise

Time

100

µs

LVW Output Threshold

switches from”1” to a ”0”

7.0

8.2

V

LVW and LVW Output Fall Time

150

µs

LVW Output Voltage

0

0.4

V

2.75

5

V

Reset Output Stability

meas reset variation

50

mV

St-By Quiescent Current (

20

mA

500

µA

Maximum Quiescent Current

(

100

mA

STCAP Output Voltage

15

17

18

V

V

Note 1:

The L4946 has ”Foldback” on its outputs during current limiting. As the output loading is increasing the current supplied by the L4946 increases

until a threshold is reached. When the current limiting threshold is reached, the L4946 output current will start to accrease as the loading is

continuoing to increase. The point where the output current stort to decrease is the maximum output current.

L4946

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