MP2112 Просмотр технического описания (PDF) - Monolithic Power Systems
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MP2112 Datasheet PDF : 8 Pages
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TM
MP2112 – 1MHz, 1A SYNCHRONOUS STEP-DOWN CONVERTER
PIN FUNCTIONS
Pin # Name Description
1
FB
Feedback Input. Connect FB to the center point of the external resistor divider. The feedback
threshold voltage is 0.6V.
2 GND Ground.
3
SW Power Switch Output. Inductor connection to drains of the internal PFET and NFET switches.
4 VINB Supply Input-Power.
5 VINA Supply Input-Analog.
6
EN Enable Input.
TYPCIAL PERFORMANCE CHARACTERISTICS
VIN = 3.3V, VOUT = 1.8V, L1 = 4.7µH, C1 = 4.7µF, C3 = 10µF, TA = +25°C, unless otherwise noted.
100
95 VIN=3.3V
90
85
VIN=4.2V
80
75
70
65
60
55
50
10
100
1000
LOAD CURRENT (mA)
MP2112-EC01
Feedback Voltage vs
Temperature
0.603
0.602
0.601
0.600
0.599
0.598
0.597
-40 -20 0 +20 +40 +60 +80 +100
TEMPERATURE (°C)
MP2112-TPC03
95
90 VIN=3.3V
85
80
VIN=4.2V
75
70
65
60
55
50
10
100
1000
LOAD CURRENT (mA)
MP2112-EC02
Switching Frequency vs
Temperature
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
-40
-20
0
+20 +40 +60 +80 +100
TEMPERATURE (°C)
MP2112-TPC04
MP2112 Rev. 1.2
www.MonolithicPower.com
3
3/6/2006
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© 2006 MPS. All Rights Reserved.
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