參數(shù)資料
型號(hào): MP2112DQ
廠商: MONOLITHIC POWER SYSTEMS INC
元件分類: 穩(wěn)壓器
英文描述: 1MHz, 1A Synchronous Step-Down Converter
中文描述: 2.4 A SWITCHING REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PDSO6
封裝: 3 X 3 MM, MO-229VEEA-2, QFN-6
文件頁(yè)數(shù): 3/8頁(yè)
文件大小: 283K
代理商: MP2112DQ
MP2112 – 1MHz, 1A SYNCHRONOUS STEP-DOWN CONVERTER
MP2112 Rev. 1.2
3/6/2006
www.MonolithicPower.com
3
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
PIN FUNCTIONS
Pin # Name Description
1
FB
Feedback Input. Connect FB to the center point of the external resistor divider. The feedback
threshold voltage is 0.6V.
GND Ground.
SW
Power Switch Output. Inductor connection to drains of the internal PFET and NFET switches.
VINB
Supply Input-Power.
VINA
Supply Input-Analog.
EN
Enable Input.
2
3
4
5
6
TYPCIAL PERFORMANCE CHARACTERISTICS
V
IN
= 3.3V, V
OUT
= 1.8V, L1 = 4.7μH, C1 = 4.7μF, C3 = 10μF, T
A
= +25
°
C, unless otherwise noted.
0.603
0.602
0.601
0.600
0.599
0.598
0.597
F
-40
+20
0
-20
+40 +60 +80 +100
-40
+20
0
-20
+40 +60 +80 +100
TEMPERATURE (
°
C)
MP2112-TPC03
Feedback Voltage vs
Temperature
V
IN
=3.3V
V
IN
=4.2V
100
95
90
85
80
75
70
65
60
55
50
E
%
)
10
100
1000
LOAD CURRENT (mA)
MP2112-EC01
95
90
85
80
75
70
65
60
55
50
E
%
)
10
100
1000
LOAD CURRENT (mA)
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
S
TEMPERATURE (
°
C)
MP2112-TPC04
Switching Frequency vs
Temperature
MP2112-EC02
V
IN
=3.3V
V
IN
=4.2V
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