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

Check Output for AC noise

using a 100KHz LP filter

Check Output for AC noise

using an A weighted filter (20-

20KHz)

400

200

µV

µV

ON/OFF

Input Current

-10

1

µA

µA

Input Threshold

0

2

0.8

12

V

V

Reset Output Voltage Set

0

0.75

V

2.75

5

V

LVW and Reset fall Time Set

Measured from 90% to 10%

150

µs

LVW and Reset Rise Time

Measured from 90% to 100%

300

µs

LVW Output Threshold

switches from”1” to a ”0”

7.0

8.2

V

LVW Output Voltage

Ω to

0

0.75

V

Ω to

2.75

50

V

Reset Output Stability

meas reset variation

50

mV

St-By Quiescent Current (

20

mA

500

µA

Maximum Quiescent Current

(

110

mA

STCAP Output Voltage

15

17

18

V

V

Note 1:

The L4948 has ”Foldback” on its outputs during current limiting. As the output loading is increasing the current supplied by the L4948 increases

until a threshold is reached. When the current limiting threshold is reached, the L4948 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.

L4948

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