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MP2354DS 데이터시트(PDF) 2 Page - Monolithic Power Systems

부품명 MP2354DS
상세설명  2A, 23V, 380KHz Step-Down Converter
PDF  10 Pages
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제조업체  MPS [Monolithic Power Systems]
홈페이지  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2354DS 데이터시트(HTML) 2 Page - Monolithic Power Systems

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MP2354 – 2A, 23V, 380KHz STEP-DOWN CONVERTER
MP2354 Rev. 1.4
www.MonolithicPower.com
2
1/6/2006
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
TM
PACKAGE REFERENCE
SYNC
BST
VIN
LX
RUN
COMP
FB
GND
1
2
3
4
8
7
6
5
TOP VIEW
MP2354_PD01-SOIC8
Part Number*
Package
Temperature
MP2354DS
SOIC8
–40
°C to +85°C
* For Tape & Reel, add suffix –Z (eg. MP2354DS–Z)
For Lead Free, add suffix –LF (eg. MP2354DS–LF–Z)
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage (VIN) .................................... 25V
Switch Voltage (VLX) ....................... –1V to +26V
Bootstrap Voltage (VBST)....................... VLX + 6V
Feedback Voltage (VFB) ................... –0.3 to +6V
Enable/UVLO Voltage (VRUN)........... –0.3 to +6V
Comp Voltage (VCOMP) ..................... –0.3 to +6V
Sync Voltage (VSYNC) ....................... –0.3 to +6V
Junction Temperature...............................150
°C
Lead Temperature ....................................260
°C
Storage Temperature ..............–65
°C to +150°C
Recommended Operating Conditions
(2)
Input Voltage (VIN) ......................... 4.75V to 23V
Operating Temperature .............–40
°C to +85°C
Thermal Resistance
(3)
θJA
θJC
SOIC8.................................... 105 ..... 50...
°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1” square of 1 oz copper.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Feedback Voltage
VFB
4.75V
≤ VIN ≤ 23V
1.198
1.222
1.246
V
Upper Switch On Resistance RDS(ON)1
0.18
Ω
Lower Switch On Resistance RDS(ON)2
10
Ω
Upper Switch Leakage
VRUN = 0V, VLX = 0V
0
10
µA
Current Limit
(4)
2.7
3.4
A
Current Sense
Transconductance
Output Current to Comp Pin
Voltage
GCS
1.95
A/V
Error Amplifier Voltage Gain
AVEA
400
V/V
Error Amplifier
Transconductance
GEA
∆IC = ±10µA
500
700
1000
µA/V
Oscillator Frequency
fS
342
380
418
KHz
Short Circuit Frequency
VFB = 0V
35
KHz
Sync Frequency
Sync Drive 0V to 2.7V
445
600
KHz
Maximum Duty Cycle
DMAX
VFB = 1.0V
90
%
Minimum Duty Cycle
DMIN
VFB = 1.5V
0
%



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