MAX1538 Datasheet, PDF (7/22 Pages) Maxim Integrated Products – Power-Source Selector for Dual-Battery Systems

Power-Source Selector for
Dual-Battery Systems
(Circuit of Figure 1. T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics
3.299
3.298
3.297
3.296
3.295
3.294
3.293
3.292
3.291
3.290
0
V_DD LOAD REGULATION
V_DD vs. TEMPERATURE
3.310
3.305
3.300
3.295
3.290
0.05
0.10
0.15
V_DD LOAD CURRENT (mA)
3.285
0.20
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
I_{BAT_} vs. V_{BAT_}
35
30
25
20
15
10
5
BAT_ HIGHEST SUPPLY
0
4 6 8 10 12 14 16
BATTERY VOLTAGE (V)
I_{BAT_} vs. V_{BAT_}
4.0
BAT_ NOT HIGHEST SUPPLY
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
5
10
15
20
BATTERY VOLTAGE (V)
ADAPTER INSERTION
MAX1538 toc05
V_ADPIN
20V _{VADPIN AND}
10V ^VEXTLD
V_EXTLD
V_REVBLK
0V
20V _VADPBLK
t_ADP
10V
V_REVBLK
0V
V_ADPBLK
10.0µs/div
5V
V_OUT1
0V
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