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| 型号： | MIC2225-G4YMT TR |
| 厂商： | Micrel Inc |
| 文件页数： | 11/15页 |
| 文件大小： | 354K |
| 描述： | IC REG DL BUCK/LINEAR 10TMLF |
| 标准包装： | 1 |
| 拓扑： | 降压（降压）（1），线性（LDO）（1） |
| 功能： | 任何功能 |
| 输出数： | 2 |
| 频率 - 开关： | 2MHz |
| 电压/电流 - 输出 1： | 1.8V，600mA |
| 电压/电流 - 输出 2： | 1.2V，300mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-UFDFN，10-TMLF? |
| 供应商设备封装： | 10-TMLF?（2x2） |
| 包装： | 标准包装 |
| 产品目录页面： | 1092 (CN2011-ZH PDF) |
| 其它名称： | 576-3102-6 |
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). 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). 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2225-GFYMT | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC2225-GFYMT TR | 功能描述:直流/直流开关调节器 Ultra Small Dual Channel DC/DC + LDO RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MIC2225-GFYMT-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:- 包装:剪切带（CT） 零件状态:停产 拓扑:降压（降压）（1），线性（LDO）（1） 功能:任何功能 输出数:2 频率 - 开关:2MHz 电压/电流 - 输出 1:1.8V，600mA 电压/电流 - 输出 2:1.5V，300mA 电压/电流 - 输出 3:- 带 LED 驱动器:无 带监控器:无 带定序器:无 电压 - 电源:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFDFN，10-TMLF? 供应商器件封装:10-TMLF?（2x2） 标准包装:1 |
| MIC2225-GJYMT | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC2225-GJYMT TR | 功能描述:直流/直流开关调节器 Ultra Small Dual Channel DC/DC + LDO RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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