|
|
MIC22200のメーカーはMicrel Semiconductorです、この部品の機能は「2A Integrated Switch Synchronous Buck Regulator」です。 |
部品番号 | MIC22200 |
| |
部品説明 | 2A Integrated Switch Synchronous Buck Regulator | ||
メーカ | Micrel Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとMIC22200ダウンロード(pdfファイル)リンクがあります。 Total 22 pages
MIC22200
2A Integrated Switch Synchronous
Buck Regulator with Frequency
Programmable from 800kHz to 4MHz
General Description
Features
The Micrel MIC22200 is a high-efficiency, 2A integrated
switch synchronous buck (step-down) regulator. The
MIC22200 switching frequency is programmable from
800kHz to 4MHz, allowing the customer to optimize their
designs either for efficiency or for the smallest footprint.
The regulator achieves efficiencies as high as 95% while
still switching at 1MHz over a broad load range.
The ultra high-speed control loops keep the output voltage
within regulation even under the extreme transient load
swings commonly found in FPGAs and low-voltage ASICs.
The output voltage can be adjusted down to 0.7V to
address all low-voltage power needs.
The MIC22200 offers a full range of sequencing and
tracking options. The EN/DLY pin, combined with the
Power-On-Reset (POR) pin, allows multiple outputs to be
sequenced in many ways during turn on and turn off. The
RC (ramp control) pin allows the device to be connected to
another device in the MIC22X00 family of products to keep
the output voltages within a certain delta V on start up.
The MIC22200 is available in a 3mm × 3mm 12-pin MLF®
package with a junction operating range from –40°C to
+125°C.
• Input voltage range: 2.6V to 5.5V
• Adjustable output voltage option down to 0.7V
• Output load current to 2A
• Full sequencing and tracking capability
• Easy RC compensation
• Power-On-Reset (POR) output
• Efficiency >90% across a broad load range
• Operating frequency: Programmable from 800 kHz up to
4MHz
• Ultra-fast transient response
• 100% maximum duty cycle
• Fully integrated MOSFET switches
• Micropower shutdown
• Thermal-shutdown and current-limit protection
• Available in Pb-free 3mm × 3mm MLF-12-pin MLF®
Package
• –40°C to +125°C junction temperature range
Applications
• High power density point-of-load conversion
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
• Servers/routers
• DVD recorders and multimedia players
• Computing peripherals
• Base stations
• FPGAs, DSP and low voltage ASIC devices
_________________________________________________________________________________________________________________________
Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
December 2010
M9999-120310-C
1 Page Micrel, Inc.
MIC22200
Absolute Maximum Ratings(1)
Supply Voltage (PVIN, SVIN ) ............................................+6V
Output Switch (SW)..........................................................6V
Logic Voltage (EN/DLY, POR, DELAY) ............VIN to -0.3V
Control Voltage (CF, RC, COMP, FB) ..............VIN to -0.3V
Lead Temperature (soldering 10s)............................. 260°C
Storage Temperature Range (Ts) .............−65°C to +150°C
EDS Rating(3).................................................................. 2kV
Operating Ratings(2)
Supply Voltage (VIN)..................................... +2.6V to +5.5V
Junction Temperature Range (TJ).......−40°C ≤ TJ ≤ +125°C
Thermal Resistance
3mm × 3mm MLF-12L (θJA) ...............................40°C/W
Electrical Characteristics(4)
TA = 25°C with VIN = VEN = 3.3V, unless otherwise specified. Bold values indicate −40°C ≤ TJ ≤ +125°C
Parameter
Condition
Min.
Supply Voltage Range
2.6
Under-Voltage Lockout Threshold
(turn-on)
2.4
UVLO Hysteresis
Quiescent Current, PWM mode
Shutdown Current
VEN ≥ 1.34V; VFB = 0.9V
VEN = 0V
Feedback Voltage
± 2% (over temperature)
0.686
Oscillator Frequency
0.8
FB Pin Input Current
Current Limit
Output Voltage Line Regulation
Output Voltage Load Regulation
VFB = 0.9*VNOM
VIN = 2.6V to 5.5V
100mA < ILOAD < 2A, VIN = 3.3V
2
Maximum Duty Cycle
VFB ≤ 0.5V
100
Switch ON-Resistance PFET
Switch ON-Resistance NFET
EN/DLY Threshold Voltage
EN/DLY Hysteresis
ISW = 1000mA VFB=0.5V
ISW = -1000mA VFB=0.9V
VIN=3.3V
1.14
DELAY Threshold Voltage
DELAY Hysteresis
VIN=3.3V
1.14
EN/DLY Source Current
VIN = 2.6 to VIN = 5.5V
0.7
RC Source Current
Ramp Control Current
0.7
Typ.
2.5
280
1.2
3.7
0.7
1
1
5.5
0.2
0.2
0.18
0.10
1.24
12
1.24
6
1
1
POR IPG(LEAK)
VPORH = 5.5V; POR = High
POR VPG(LO)
Output Logic-Low Voltage
(undervoltage condition), IPOR = 5mA
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
4. Specification for packaged product only.
135
Max.
5.5
2.6
2
10
0.714
1.2
8
1.34
1.34
1.3
1.3
1
2
Units
V
V
mV
mA
µA
V
MHz
nA
A
%
%
%
Ω
V
mV
V
mV
µA
µA
µA
mV
December 2010 3 M9999-120310-C
3Pages Micrel, Inc.
Typical Characteristics (Continued)
Channel RDSON
vs. Temperature
225
215
205
195
185
175
165
155
145 02 55 07 5 100 125
TEMPERATURE (°C)
Frequency
vs. CF
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
CF CAPICITOR (pF)
Channel RDSON
vs. Temperature
140
135
130
125
120
115
110
105
100
95
90 02 55 07 5 100 125
TEMPERATURE (°C)
Efficiency VOUT=1.8V
100
95 VIN = 3.3V
90
85
80 VIN = 5.0V
75
70
65
600 0.5 1 1.5
OUTPUT CURRENT (A)
2
MIC22200
Efficiency VOUT=3.3V
100
95
90
85
80
75
VIN = 5V
700 0.5 1 1.5 2
OUTPUT CURRENT (A)
Efficiency VOUT=1.2V
100
95
90 VIN = 3.3V
85
80
75 VIN = 5.0V
70
65
600 0.5 1 1.5
OUTPUT CURRENT (A)
2
December 2010 6 M9999-120310-C
6 Page | |||
ページ | 合計 : 22 ページ | ||
|
PDF ダウンロード | [ MIC22200 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
MIC22200 | 2A Integrated Switch Synchronous Buck Regulator | Micrel Semiconductor |
MIC22205 | Synchronous Buck Regulator | Micrel Semiconductor |