AME5253A Datasheet, PDF (13/18 Pages) Analog Microelectronics – 1A, 1.5MHz Synchronous Step-Down Converter

AME
AME5253A
n Characterization Curve
Reference Voltage vs. Temperature
0. 620
0. 615
0. 610
0. 605
0. 600
0. 595
0. 590
0. 585
VIN = 3.6V
0. 580
-50
-25
0
+25
+50
+75 +100 +125
Temperature(^OC)
Frequency vs. Supply Voltage
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
2. 5
3. 0
3. 5
4. 0
4. 5
5. 0
5. 5
V_IN(V)
Current Limit vs. Temperature
3 .0
2 .9
2 .8
VIN = 3.3V
2 .7
VOUT = 1.2V
2 .6
2 .5
2 .4
2 .3
2 .2
2 .1
2 .0
1 .9
1 .8
1 .7
1 .6
1 .5
1 .4
1 .3
-40 -25 -10 +5 +20 +35 +50 +65 +80 +95 +110 +125
Temperature (^oC)
Rev.A.03
1A, 1.5MHz Synchronous
Step-Down Converter
Frequency vs. Temperature
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
1.25
V_IN = 3.6V
1.20
1.15
1.10
-50
-25
+0
+25
+50
+75 +100 +125
Temperature(^OC)
Output Voltage vs. Output Current
1 .90
1 .89
1 .88
1 .87
1 .86
1 .85
1 .84
1 .83
1 .82
1 .81
1 .80
1 .79
1 .78
1 .77
0
V_OUT = 1.8V
V_IN = 3.6V
100 200 300 400 500 600 700 800 900 1000
Output Current(mA)
Current Limit vs. Temperature
3 .0
2 .9
2 .8
VIN = 3.6V
2 .7
VOUT = 1.2V
2 .6
2 .5
2 .4
2 .3
2 .2
2 .1
2 .0
1 .9
1 .8
1 .7
1 .6
1 .5
1 .4
1 .3
-40 -25 -10 +5 +20 +35 +50 +65 +80 +95 +110 +125
Temperature (^oC)
13