EV2360DG-00B 查看數據表（PDF） - Monolithic Power Systems
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EV2360DG-00B Datasheet PDF : 8 Pages
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TM
MP2360 – 1.8A, 24V, 1.4MHz STEP-DOWN CONVERTER
PIN FUNCTIONS
Pin #
1, 8
2
3
4
5
6
7
Name Description
NC No Connect.
SW Switch Output.
IN
Supply Voltage. The MP2360 operates from a +4.5V to +24V unregulated input. C1 is needed
to prevent large voltage spikes from appearing at the input.
EN On/Off Control Input. Pull above 1.2V to turn the device on.
Feedback. An external resistor divider from the output to GND, tapped to the FB pin sets the
FB
output voltage. To prevent current limit run away during a short circuit fault condition the
frequency foldback comparator lowers the oscillator frequency when the FB voltage is below
250mV.
Ground. This pin is the voltage reference for the regulated output voltage. For this reason care
GND must be taken in its layout. This node should be placed outside of the D1 to C1 ground path to
prevent switching current spikes from inducing voltage noise into the part.
Bootstrap. This capacitor is needed to drive the power switch’s gate above the supply voltage. It
BST is connected between SW and BST pins to form a floating supply across the power switch
driver.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VOUT = 3.3V, TA = +25°C, unless otherwise noted.
Efficiency vs
Load Current
100
VOUT = 5V
90
80
VOUT = 2.5V
70
60
50
VIN = 12V
40
0 0.5 1.0 1.5 2.0 2.5
LOAD CURRENT (A)
Efficiency vs
Load Currents
100
90
VOUT = 12V
VOUT = 5V
80
VOUT = 2.5V
70
60
50
40
0
VIN = 24V
0.5 1.0 1.5 2.0 2.5
LOAD CURRENT (A)
Current Limit vs
Duty Cycle
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0 20 40 60 80 100
DUTY CYCLE (%)
MP2360 Rev. 0.9
www.MonolithicPower.com
3
8/21/2006
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© 2006 MPS. All Rights Reserved.
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