MAX1552 Datasheet, PDF (5/12 Pages) Maxim Integrated Products – Complete Power IC for Low-Cost PDAs

Complete Power IC for
Low-Cost PDAs
(Circuit of Figure 1, T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics
MAIN DROPOUT VOLTAGE
vs. LOAD CURRENT
500
400
300
200
100
0
0
100 200 300 400 500
I_LOAD (mA)
3.50
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.50
0
SDIG OUTPUT VOLTAGE
vs. LOAD CURRENT
50 100 150 200 250 300 350
I_LOAD (mA)
LOAD STEP RESPONSE MAIN
MAX1552 toc07
V_MAIN
AC-COUPLED
50mV/div
40µs/div
I_LOAD
100mA/div
SDIG DROPOUT VOLTAGE
vs. LOAD CURRENT
250
200
150
100
50
0
0
1.75
50 100 150 200 250
I_LOAD (mA)
COR1 OUTPUT VOLTAGE
vs. LOAD CURRENT
1.50
1.25
1.00
0.75
0.50
0
100
200 300
400
I_LOAD (mA)
LOAD STEP RESPONSE COR1
MAX1552 toc08
V_COR1
AC-COUPLED
20mV/div
40µs/div
I_LOAD
100mA/div
3.50
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.50
0
MAIN OUTPUT VOLTAGE
vs. LOAD CURRENT
100 200 300 400 500 600
I_LOAD (mA)
COR2 OUTPUT VOLTAGE
vs. LOAD CURRENT
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0 10
20 30 40 50
I_LOAD (mA)
INPUT CURRENT
vs. INPUT VOLTAGE
80
70
60
50
V_IN FALLING
40
V_IN RISING
30
20
10
0
0
1
2
3
4
5
V_IN (V)
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