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參數(shù)資料
| 型號： | MIC2225-4OYMT TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 11/15頁 |
| 文件大小： | 354K |
| 描述： | IC REG DL BUCK/LINEAR 10TMLF |
| 標準包裝： | 1 |
| 拓撲： | 降壓（降壓）（1），線性（LDO）（1） |
| 功能： | 任何功能 |
| 輸出數(shù)： | 2 |
| 頻率 - 開關(guān)： | 2MHz |
| 電壓/電流 - 輸出 1： | 1.2V，600mA |
| 電壓/電流 - 輸出 2： | 2.9V，300mA |
| 帶 LED 驅(qū)動器： | 無 |
| 帶監(jiān)控器： | 無 |
| 帶序列發(fā)生器： | 無 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-UFDFN，10-TMLF? |
| 供應(yīng)商設(shè)備封裝： | 10-TMLF?（2x2） |
| 包裝： | 標準包裝 |
| 產(chǎn)品目錄頁面： | 1092 (CN2011-ZH PDF) |
| 其它名稱： | 576-3101-6 |
Micrel, Inc.
MIC2225
February 2008
11
M9999-022008-D
Functional Description
VIN
VIN provides power to the MOSFETs for the switch
mode regulator section, along with the current limiting
sensing. Due to the high switching speeds, it is
recommended that an 1礔 capacitor be placed close to
VIN and the power ground (PGND) pin for bypassing.
Please refer to layout recommendations.
AVIN
Analog VIN (AVIN) provides power to the LDO section
and the bias through an internal 6& resistor. AVIN and
VIN must be tied together. Careful layout should be
considered to ensure high frequency switching noise
caused by VIN is reduced before reaching AVIN.
LDO
The LDO pin is the output of the linear regulator and
needs to be connected to a 2.2礔 output capacitor.
EN
The enable pin provides a logic level control of the
output. In the off state, the supply current of the device is
greatly reduced (typically <1礎(chǔ)). Also, in the off state,
the output drive is placed in a "tri-stated" condition,
wherein both the high side P-channel MOSFET and the
low-side N-channel are in an off or non-conducting
state. Do not drive the enable pin above the supply
voltage.
ENLDO
The enable pin provides a logic level control of the LDO
output. In the off state, supply current of the device is
greatly reduced (typically <1礎(chǔ)). Do not drive the enable
pin above the supply voltage.
BIAS
The BIAS pin supplies the power to the internal power to
the control and reference circuitry. The bias is powered
from AVIN through an internal 6& resistor. A small 0.1礔
capacitor is recommended for bypassing.
FB
The feedback pin (FB) provides the control path to
control the output. For fixed output, the controller
output is directly connected to the feedback (FB) pin.
SW
The switch (SW) pin connects directly to the inductor
and provides the switching current necessary to operate
in PWM mode. Due to the high speed switching on this
pin, the switch node should be routed away from
sensitive nodes.
PGND
Power ground (PGND) is the ground path for the high
current PWM mode. The current loop for the power
ground should be as small as possible and separate
from the Analog ground (AGND) loop. Refer to the layout
considerations for more details.
SGND
Signal ground (SGND) is the ground path for the biasing
and control circuitry. The current loop for the signal
ground should be separate from the Power ground
(PGND) loop. Refer to the layout considerations for more
details.
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參數(shù)描述 |
|---|---|
| MIC2225-4SYMT | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: 制造商:Micrel Inc 功能描述: |
| MIC2225-4SYMT TR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Ultra Small Dual Channel DC/DC + LDO RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MIC2225-4SYMT-TR | 功能描述:Linear And Switching Voltage Regulator IC 2 Output Step-Down (Buck) (1), Linear (LDO) (1) 2MHz 10-UFDFN, 10-TMLF? 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 拓撲:降壓（降壓）（1），線性（LDO）（1） 功能:任何功能 輸出數(shù):2 頻率 - 開關(guān):2MHz 電壓/電流 - 輸出 1:1.2V，600mA 電壓/電流 - 輸出 2:3.3V，300mA 電壓/電流 - 輸出 3:- 帶 LED 驅(qū)動器:無 帶監(jiān)控器:無 帶定序器:無 電壓 - 電源:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-UFDFN，10-TMLF? 供應(yīng)商器件封裝:10-TMLF?（2x2） 標準包裝:1 |
| MIC2225-G4YMT | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC2225-G4YMT TR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Ultra Small Dual Channel DC/DC + LDO RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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