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參數(shù)資料
| 型號： | EV2359DJ-00B |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 1.2A, 24V, 1.4MHz Step-Down Converter in a TSOT23-6 |
| 中文描述： | 1.2A電流，24V的，1.4MHz的降壓轉(zhuǎn)換器中的TSOT23 - 6 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大小： | 383K |
| 代理商： | EV2359DJ-00B |
MP2359 – 1.2A, 24V, 1.4MHz STEP-DOWN CONVERTER IN A TSOT23-6
MP2359 Rev. 1.1
6/23/2006
www.MonolithicPower.com
3
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
PIN FUNCTIONS
Pin # Name Description
1
BST
Bootstrap. A capacitor is connected between SW and BS pins to form a floating supply across
the power switch driver. This capacitor is needed to drive the power switch’s gate above the
supply voltage.
Ground. This pin is the voltage reference for the regulated output voltage. For this reason care
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.
Feedback. An external resistor divider from the output to GND, tapped to the FB pin sets the
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.
On/Off Control Input. Pull EN above 1.2V to turn the device on.
Supply Voltage. The MP2359 operates from a +4.5V to +24V unregulated input. C1 is needed
to prevent large voltage spikes from appearing at the input.
Switch Output.
2
GND
3
FB
4
EN
5
IN
6
SW
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
= 12V, V
OUT
= 3.3V, L = 4.7μH, C1 = 10μF, C2 = 22μF, T
A
= +25oC, unless otherwise noted.
Efficiency vs
Load Current
V
IN
= 12V
V
IN
= 24V
V
OUT
= 5V
100
90
80
70
60
50
40
30
20
10
0
0.01
LOAD CURRENT (A)
E
100
90
80
70
60
50
40
30
20
10
0
0.01
E
0.1
1
10
LOAD CURRENT ( A)
Efficiency vs
Load Current
V
IN
= 18V
V
IN
= 24V
V
OUT
= 2.5V
Feedback Voltage vs
Die Temperature
F
0.820
0.818
0.816
0.814
0.812
0.810
0.808
0.806
0.804
0.802
0.800
DIE TEMPERATURE (
O
C)
-50 -25
0
25
75 100 125
50
150
Switching Frequency vs
Die Temperature
S 1.30
1.48
1.46
1.44
1.42
1.40
1.38
1.36
1.34
1.32
DIE TEMPERATURE (
O
C)
-50 -25
0
25
75 100 125
50
150
0.1
1
10
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| EV2360DG-00B | 制造商:Monolithic Power Systems 功能描述:EVAL KIT FOR 1.8A, 24V, 1.4MHZ STEP-DOWN CNVRTR IN 2MM X 2MM - Bulk |
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| EV2361DQ-00A | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:2A, 23V, 1.4MHz Step-Down Converter |
| EV2363DN-00A | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:3A, 27V, 365KHz Step-Down Converter |
| EV2364DF-00A | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:4 Output DSL Power Supply |
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