MP2309 データシートの表示（PDF） - Monolithic Power Systems
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MP2309 Datasheet PDF : 10 Pages
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TM
MP2309 – 1A, 23V, 340KHz SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER
PACKAGE REFERENCE
TOP VIEW
BS 1
IN 2
SW 3
GND 4
8 SS
7 EN
6 COMP
5 FB
MP2309_PD01_SOIC8
Part Number*
MP2309DS
Package
SOIC8
Temperature
–40° to +85°C
* For Tape & Reel, add suffix –Z (eg. MP2309DS–Z)
For Lead Free, add suffix –LF (eg. MP2309DS–LF–Z)
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage VIN....................... –0.3V to +26V
Switch Voltage VSW.................. –1V 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 23V
Output Voltage VOUT .................... 0.923V to 20V
Ambient Operating Temperature .... –40°C to +85°C
Thermal Resistance (3) θJA θJC
SOIC8..................................... 90 ...... 45... °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
Shutdown Supply Current
Supply Current
Feedback Voltage
Feedback Overvoltage Threshold
Error Amplifier Voltage Gain (4)
Error Amplifier Transconductance
High-Side Switch On Resistance (4)
Low-Side Switch On Resistance (4)
High-Side Switch Leakage Current
Upper Switch Current Limit
VEN = 0V
VEN = 2.0V, VFB = 1.0V
VFB 4.75V ≤ VIN ≤ 23V
AEA
GEA
RDS(ON)1
RDS(ON)2
∆IC = ±10µA
VEN = 0V, VSW = 0V
Minimum Duty Cycle
Lower Switch Current Limit
From Drain to Source
COMP to Current Sense
Transconductance
GCS
Oscillation Frequency
Short Circuit Oscillation Frequency
Maximum Duty Cycle
Minimum On Time (4)
Fosc1
Fosc2
DMAX
VFB = 0V
VFB = 0.8V
EN Shutdown Threshold
EN Shutdown Threshold Hysteresis
VEN Rising
EN Lockout Threshold Voltage
EN Lockout Hysteresis
Min
0.900
1.4
1.1
2.2
Typ
1
1.3
0.923
1.1
400
800
140
140
2
0.8
2.4
340
100
90
220
1.5
210
2.5
210
Max
3.0
1.5
0.946
10
2.0
2.7
Units
µA
mA
V
V
V/V
µA/V
mΩ
mΩ
µA
A
A
A/V
KHz
KHz
%
nS
V
mV
V
mV
MP2309 Rev. 1.4
www.MonolithicPower.com
2
3/13/2006
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
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