B130 查看數據表（PDF） - Monolithic Power Systems
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B130 Datasheet PDF : 11 Pages
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TM
MP1570 – 3A, 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
MP1570_PD01-SOIC8N
Part Number* Package
Temperature
MP1570DN
SOIC8N
(Exposed Pad)
–40° to +85°C
* For Tape & Reel, add suffix –Z (eg. MP1570DN–Z)
For Lead Free, add suffix –LF (eg. MP1570DN–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 ...................... 1.23V to 20V
Ambient Operating Temperature ... –40°C to +85°C
Thermal Resistance (3) θJA θJC
SOIC8N .................................. 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
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 = 2.7V, VFB = 1.4V
VFB
4.75V ≤ VIN ≤ 23V,
VCOMP < 2V
AEA
GEA
RDS(ON)1
RDS(ON)2
∆IC = ±10µA
VEN = 0V, VSW = 0V
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 = 1.0V
EN Shutdown Threshold Voltage
EN Shutdown Threshold Voltage
Hysteresis
VEN Rising
Min
1.202
1.4
550
4.0
4.0
300
1.1
Typ
0.3
1.3
1.230
1.5
400
820
100
100
0
5.8
0.9
5.4
340
110
90
220
1.5
220
Max
3.0
1.5
1.258
1.6
1100
10
7.6
6.8
380
2.0
Units
µA
mA
V
V
V/V
µA/V
mΩ
mΩ
µA
A
A
A/V
KHz
KHz
%
ns
V
mV
MP1570 Rev. 1.5
www.MonolithicPower.com
2
1/31/2006
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
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