2 or 3-Cell, Step-Up/Down,

Two-Way Pager System IC

6

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

100

10

1

4

5

3

2

6

NO-LOAD BATTERY CURRENT

vs. BATTERY VOLTAGE

BATTERY VOLTAGE (V)

COAST MODE

160

140

120

100

80

60

40

20

0

1

4

5

3

2

6

MAXIMUM LOAD CURRENT

vs. BATTERY VOLTAGE

BATTERY VOLTAGE (V)

RUN MODE

COAST MODE

6

1

1

10

100

START-UP BATTERY VOLTAGE

vs. LOAD CURRENT

2

LOAD CURRENT (mA)

3

4

5

COAST MODE

0

5

15

10

20

25

0

2

1

3

4

5

6

NICD CHARGING CURRENT vs.

NICD VOLTAGE

NICD VOLTAGE (V)

15mA MODE

0

2

1

3

0

2

1

3

4

5

-80

-60

-40

0

-20

20

100

300

200

400

500

600

LX NOISE SPECTRUM

(RUN MODE, SYNC OPERATION)

FREQUENCY (kHz)

0

20

60

80

40

100

0.1

10

1

100

1000

10,000

REG2 NOISE SPECTRUM

(RUN MODE)

FREQUENCY (kHz)