Microchip MIC22705 Bruksanvisning
Microchip
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MIC22705
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2020 Microchip Technology Inc. DS20006307A-page 1
MIC22705
Features
• Input Voltage Range: 2.9V to 5.5V
• Output Voltage Adjustable Down to 0.7V
• Output Load Current Up to 7A
• Safe Start-Up into a Pre-Biased Output Load
• Full Sequencing and Tracking Ability
• Power Good Output
• Efficiency >95% Across a Broad Load Range
• Ultra-Fast Transient Response
• Easy RC Compensation
• 100% Maximum Duty Cycle
• Fully Integrated MOSFET Switches
• Thermal Shutdown and Current-Limit Protection
• 24-Pin 4 mm x 4 mm QFN
• –40°C to +125°C Junction Temperature Range
Applications
• High Power Density Point-of-Load Conversion
• Servers, Routers, and Base Stations
• Blu-Ray/DVD Players and Recorders
• Computing Peripherals
• FPGAs, DSP, and Low Voltage ASIC Power
General Description
The MIC22705 is a highly efficient, 7A, integrated
switch, synchronous buck (step-down) regulator. The
MIC22705 is optimized for highest efficiency, achieving
more than 95% efficiency while still switching at 1 MHz
over a broad range. The ultra-high speed control loop
keeps the output voltage within regulation even under
extreme transient load swings commonly found in
FPGAs and low-voltage ASICs. The output voltage is
pre-bias safe and can be adjusted down to 0.7V to
address all low-voltage power needs.
The MIC22705 offers a full range of sequencing and
tracking options. The Enable/Delay (EN/DLY) pin,
combined with the Power Good (PG) pin, allows
multiple outputs to be sequenced in any way during
turn-on and turn-off. The Ramp Control (RC) pin allows
the device to be connected to another product in the
MIC22xxx and/or MIC68xxx family, to keep the output
voltages within a certain V on start-up.∆
The MIC22705 is available in a 24-pin 4mm x 4mm
QFN with a junction operating range from –40°C to
+125°C.
Package Type
MIC22705
24-Lead 4 mm x 4 mm QFN (ML)
(Top View)
PVIN
EN/DLY
NC
RC
PG
PVIN
PVIN
SVIN
SGND
COMP
FB
PVIN
PGND
SW
SW
SW
SW
PGND
PGND
SW
SW
SW
SW
PGND
EP
1
2
3
4
5
6
7 8 9 10 11 12
13
14
15
16
17
18
19202122
2324
1 MHz, 7A Integrated Switch, High Efficiency Synchronous Buck Regulator
Produktspecifikationer
| Varumärke: | Microchip |
| Kategori: | Inte kategoriserad |
| Modell: | MIC22705 |
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