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MP1593DN 数据表(PDF) 2 Page - Monolithic Power Systems

部件名 MP1593DN
功能描述  3A, 28V, 385KHz Step-Down Converter
PDF  11 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP1593DN 数据表(HTML) 2 Page - Monolithic Power Systems

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MP1593 – 3A, 28V, 385KHz STEP-DOWN CONVERTER
MP1593 Rev. 1.9
www.MonolithicPower.com
2
9/14/2006
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
PACKAGE REFERENCE
Part Number*
Package
Temperature
MP1593DN
SOIC8E
(Exposed Pad)
–40
°C to +85°C
* For Tape & Reel, add suffix –Z (eg. MP1593DN–Z)
For RoHS Compliant Packaging, add suffix –LF
(eg. MP1593DN–LF–Z)
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage VIN....................... –0.3V to +30V
Switch Voltage VSW.............. –0.5V to VIN + 0.3V
Boost Voltage VBS..........VSW – 0.3V to VSW + 6V
All Other Pins................................. –0.3V 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 28V
Ambient Operating Temp............. –40
°C to +85°C
Thermal Resistance
(3)
θJA
θJC
SOIC8E (Exposed Pad).......... 50 ...... 10...
°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
Shutdown Supply Current
VEN = 0V
20
30
µA
Supply Current
VEN = 2.6V, VFB = 1.4V
1.0
1.2
mA
Feedback Voltage
VFB
4.75V
≤ VIN ≤ 28V
VCOMP < 2V
1.194
1.222
1.250
V
Error Amplifier Voltage Gain
AEA
400
V/V
Error Amplifier
Transconductance
GEA
∆ICOMP = ±10µA
500
800
1120
µA/V
High-Side Switch
On-Resistance
RDS(ON)1
100
140
mΩ
Low-Side Switch
On-Resistance
RDS(ON)2
10
Ω
High-Side Switch Leakage
Current
VEN = 0V, VSW = 0V
0
10
µA
Current Limit
4.8
6.2
7.6
A
Current Sense to COMP
Transconductance
GCS
5.4
A/V
Oscillation Frequency
fOSC1
335
385
435
KHz
Short Circuit Oscillation
Frequency
fOSC2
VFB = 0V
25
45
60
KHz
Maximum Duty Cycle
DMAX
VFB = 1.0V
90
%
Minimum Duty Cycle
DMIN
VFB = 1.5V
0
%
BS
IN
SW
GND
SS
EN
COMP
FB
1
2
3
4
8
7
6
5
TOP VIEW
EXPOSED PAD
ON BACKSIDE
CONNECT TO PIN 4



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