EV1543DJ-01A Просмотр технического описания (PDF) - Monolithic Power Systems
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EV1543DJ-01A Datasheet PDF : 9 Pages
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TM
MP1543 — 1.5A, 500KHZ SYNCHRONOUS RECTIFIED STEP-UP CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Maximum Duty Cycle
vs Temperature
88.10
88.05
88.00
87.95
87.90
87.85
87.80
-40
0
40
80 120
TEMPERATURE (°C)
MP1543-TPC10
Quiescent Current vs
Temperature
380
370
360
350
340
330
320
310
300
-40
0
40
80 120
TEMPERATURE (°C)
MP1543-TPC11
Current Limit vs
Duty Cycle
1.6
1.4
1.2
1.0
0.8
0
20 40 60 80 100
DUTY CYCLE (%)
MP1543-TPC12
PIN FUNCTIONS
Pin # Name Description
1
FB Regulation Feedback Input. Connect to an external resistive voltage divider from the output to
FB to set the output voltage.
2
GND Ground.
3
OUT Supply Input for the MP1543. Connect to the output of the converter.
4
SW Output Switching Node. SW is the drain of the internal low-side N-Channel MOSFET and
high-side P-Channel MOSFET. Connect the inductor to SW to complete the step-up converter.
5
EN Regulator On/Off Control Input. A logic high input (VEN > 1.4V) turns on the regulator. A logic
low input (VEN < 0.4V) puts the MP1543 into low current shutdown mode.
MP1543 Rev. 1.0
www.MonolithicPower.com
4
1/11/2006
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© 2006 MPS. All Rights Reserved.
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