Használati útmutató Microchip MIC23030
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2021 Microchip Technology Inc.DS20006488A-page 1
MIC23030
Features
•Input Voltage: 2.7V to 5.5V
•400 mA Output Current
•Up to 91% Efficiency and 83% at 1 mA
•21 µA Typical Quiescent Current
•8 MHz PWM Operation in Continuous Mode
•Ultra-Fast Transient Response
•Low Voltage Output Ripple
-14 mVPP Ripple in HyperLight Load® Mode
-5 mV Output Voltage Ripple in Full PWM
Mode
•Fully Integrated MOSFET Switches
•0.01 µA Shutdown Current
•Thermal Shutdown and Current-Limit Protection
•Fixed and Adjustable Output Voltage Options
Available
•1.6 mm x 1.6 mm 6-Lead TDFN Package
•–40°C to +125°C Junction Temperature Range
Applications
•Mobile Handsets
•Portable Media/MP3 Players
•Portable Navigation Devices (GPS)
•WiFi/WiMax/WiBro Modules
•Digital Cameras
•Wireless LAN Cards
•USB-Powered Devices
•Portable Applications
General Description
The MIC23030 is a high-efficiency, 8 MHz, 400mA
synchronous buck regulator with HyperLight Load
®
mode. HyperLight Load®provides very high efficiency
at light loads and ultra-fast transient response that is
perfectly suited for supplying processor core voltages.
An additional benefit of this proprietary architecture is
the very low output ripple voltage throughout the entire
load range with the use of small output capacitors. The
tiny 1.6 mm x 1.6mm TDFN package saves precious
board space and requires only three external
components.
The MIC23030 is designed for use with a very small
inductor, down to 0.47 µH, and an output capacitor as
small as 2.2 µF that enables a sub 1 mm height.
The MIC23030 has a very low quiescent current of
21 µA and achieves as high as 83% efficiency at 1 mA.
At higher loads, the MIC23030 provides a constant
switching frequency around 8 MHz while achieving
peak efficiencies up to 91%.
The MIC23030 is available in a 6-pin 1.6mm x 1.6 mm
TDFN package with an operating junction temperature
range of –40°C to +125°C.
Typical Application Circuit
Fixed Output MIC23030
SW
SNS
PGND
GN
D
V
OUT
AGND
U1 MIC23030
VIN
V
IN
2
.7V to 5.5V
EN
C1
C2
L1
EN
GND
1
4
2
5 6
3
50
60
70
80
90
100
110100 100
0
EFFICIENCY (%)
OUTPUT CURRENT (mA)
L = 0.47μH
COUT = 4.7μF
V
IN
= 3.0V
V
IN
= 3.6V
V
IN
= 4.2V
Efficiency VOUT = 2.5V
8 MHz PWM 400 mA Buck Regulator with HyperLight Load
®
Termékspecifikációk
| Márka: | Microchip |
| Kategória: | nincs kategorizálva |
| Modell: | MIC23030 |
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