Rainbow Electronics MAX1538 - Manual (Page 7)

MAX1538
Power-Source Selector for
Dual-Battery Systems
_______________________________________________________________________________________ 7
V DD LOAD REGULATION
MAX1538 toc01
V DD LOAD CURRENT (mA)
V
DD
(V)
0.15 0.10 0.05
3.291
3.292
3.293
3.294
3.295
3.296
3.297
3.298
3.299
3.290
0 0.20
V DD vs. TEMPERATURE
MAX1538 toc02
TEMPERATURE (°C)
V
DD
(V)
60 40 20 0 -20
3.290
3.295
3.300
3.305
3.310
3.285
-40 80
I BAT_ vs. V BAT_
MAX1538 toc04
BATTERY VOLTAGE (V)
BATTERY INPUT CURRENT (
µ
A)
15 10 5
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
0 20
BAT_ NOT HIGHEST SUPPLY
I BAT_ vs. V BAT_
MAX1538 toc03
BATTERY VOLTAGE (V)
BATTERY INPUT CURRENT (
µ
A)
14 12 10 8 6
5
10
15
20
25
30
35
0
4 16
BAT_ HIGHEST SUPPLY
Typical Operating Characteristics
(Circuit of Figure 1. T
A
= +25°C, unless otherwise noted.)
ADAPTER INSERTION
MAX1538 toc05
10.0µs/div
20V
10V
V ADPIN AND
V EXTLD
V ADPBLK
V REVBLK
V OUT1
0V
20V
10V
0V
5V
0V
V ADPIN
V EXTLD
V
REVBLK
V ADPBLK
t ADP