Typical operating characteristics (continued) – Rainbow Electronics MAX769 User Manual
Page 6
MAX769
2 or 3-Cell, Step-Up/Down,
Two-Way Pager System IC
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
100
10
1
4
5
3
2
6
NO-LOAD BATTERY CURRENT
vs. BATTERY VOLTAGE
MAX769-04
BATTERY VOLTAGE (V)
BATTERY CURRENT (
µ
A)
V
OUT
= 3.0V
COAST MODE
160
140
120
100
80
60
40
20
0
1
4
5
3
2
6
MAXIMUM LOAD CURRENT
vs. BATTERY VOLTAGE
MAX769-05
BATTERY VOLTAGE (V)
MAXIMUM LOAD CURRENT (mA)
RUN MODE
COAST MODE
V
OUT
= 3.0V
6
1
1
10
100
START-UP BATTERY VOLTAGE
vs. LOAD CURRENT
2
MAX769-06
LOAD CURRENT (mA)
START-UP BATTERY VOLTAGE (V)
3
4
5
V
OUT
= 3.0V
COAST MODE
0
5
15
10
20
25
0
2
1
3
4
5
6
NICD CHARGING CURRENT vs.
NICD VOLTAGE
MAX769-07
NICD VOLTAGE (V)
NICD CHARGING CURRENT (mA)
15mA MODE
V
OUT
= 4.9V
0
2
1
3
0
2
1
3
4
5
DR1 OR DR2 ON-RESISTANCE vs. V
OUT
MAX769-08
V
OUT
VOLTAGE (V)
R
ON
(
Ω
)
-80
-60
-40
0
-20
20
100
300
200
400
500
600
LX NOISE SPECTRUM
(RUN MODE, SYNC OPERATION)
MAX769-09
FREQUENCY (kHz)
NOISE (dBV)
0
20
60
80
40
100
0.1
10
1
100
1000
10,000
REG2 NOISE SPECTRUM
(RUN MODE)
MAX769-10
FREQUENCY (kHz)
NOISE (dB
µ
V)