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MP28258 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - 4.2V-20V Input Synchronous Step-down Converter - MPS

भाग संख्या MP28258
समारोह 4.2V-20V Input Synchronous Step-down Converter
मैन्युफैक्चरर्स MPS 
लोगो MPS लोगो 
पूर्व दर्शन
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<?=MP28258?> डेटा पत्रक पीडीएफ

MP28258 pdf
MP28258 – 3A, 4.2V-20V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER IN QFN12 (2X3mm)
Part Number
MP28258DD*
MP28258DD-A
ORDERING INFORMATION
OCP Protection
Latch-off mode
Hiccup mode
Package
QFN12 (2x3mm)
QFN12 (2x3mm)
Top Marking
AAA
ACF
Free Air Temperature (TA)
-40°C to 85°C
-40°C to 85°C
* For Tape & Reel, add suffix –Z (e.g. MP28258DD–Z).
For RoHS Compliant Packaging, add suffix –LF (e.g. MP28258DD–LF–Z)
PACKAGE REFERENCE
TOP VIEW
GND
GND 1
12 11 GND
SW 2
BST 3
SW 10 SW
9 IN
VCC 4
8 FREQ
EN 5
7 FB
6
PG
QFN12 (2x3mm)
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage VIN ....................................... 22V
VSW..................................... -0.3V to (VIN + 0.3V)
VBST ...................................................... VSW + 6V
IVIN (RMS)........................................................ 3.5A
All Other Pins ..................................-0.3V to +6V
Continuous Power Dissipation (TA = 25°C) (2)
QFN12 (2X3mm)........................................ 1.8W
Junction Temperature ..............................150°C
Lead Temperature ....................................260°C
Storage Temperature............... -65°C to +150°C
Recommended Operating Conditions (3)
Supply Voltage VIN ...........................4.2V to 20V
Output Voltage VOUT.....................0.815V to 13V
Operating Junction Temp. (TJ). -40°C to +125°C
Thermal Resistance (4) θJA θJC
QFN12 (2mmx3mm) ............... 70 ...... 15... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-to-
ambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP28258 Rev 1.14
www.MonolithicPower.com
9/25/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
2

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