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参数资料
| 型号： | MIC2238-GFHYML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 0.8A DL 12MLF |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 2 |
| 输出电压： | 1.58V，1.8V |
| 输入电压： | 2.5 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 2.5MHz |
| 电流 - 输出： | 800mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-VFDFN 裸露焊盘，12-MLF? |
| 包装： | 标准包装 |
| 供应商设备封装： | 12-MLF?（4x4） |
| 产品目录页面： | 1095 (CN2011-ZH PDF) |
| 其它名称： | 576-2122-6 576-2122-6-ND 576-2972-6 |
Micrel, Inc.
Pin Description
MIC2238
Pin Number
Adjustable
Pin Number
Fixed
Pin Name
Pin Name
Feedback 2: For adjustable voltage options connect the
1
–
FB2
external resistor divider network to FB2 to set the output
voltage of regulator 2. Nominal value is 0.8V.
Enable 2 input. Logic low powers down regulator 2. Logic
2
2
EN2
high powers up regulator 2. MIC2238 features built-in soft-
start circuitry that reduces in-rush current and prevents the
output voltage from overshooting at start up.
3
4
5
6
3
4
5
6
AVIN
SW2
AGND
PGND
Analog Supply Voltage: Supply voltage for the analog control
circuitry. Requires bypass capacitor to GND.
Switch node for regulator 2, connected to external inductor.
Analog (signal) ground.
Power ground.
Forced PWM Mode Bar. Grounding this pin forces the device
7
7
/FPWM
to stay in constant frequency PWM mode only. Pulling this
pin high enables automatic Trickle mode operation.
8
9
8
9
SW1
VIN
Switch node for regulator 1, connected to external inductor.
Supply Voltage: Supply voltage for the internal switches and
drivers.
Power Good Output. This output is pulled down unless the
regulator 1 output voltage is within +6.25% and -8.5% of
10
10
PGOOD
regulation. After the output voltage is in regulation, the output
starts to go high with an internal 5 μ A current source. A delay
time could be programmed by tying a capacitor to this pin.
Enable 1 input. Logic low powers down regulator 1. Logic
11
11
EN1
high powers up regulator 1. MIC2238 features built-in soft-
start circuitry that reduces in-rush current and prevents the
output voltage from overshooting at start up.
Feedback 1: For adjustable voltage options connect to the
12
–
FB1
external resistor divider network to FB1 to set the output
voltage of regulator 1. Nominal value is 0.8V.
April 2010
–
–
EP
1
12
EP
OUT2
OUT1
GND
Output Voltage 2. For fixed output voltage options connect
OUT2 to the output voltage of regulator 2.
Output Voltage 1. For fixed output voltage options connect
OUT1 to the output voltage of regulator 1.
Ground, backside pad.
3
M9999-040810-A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2238-GSYML | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:2.5MHz Dual Phase PWM Buck Regulator |
| MIC2238-GSYML TR | 功能描述:直流/直流开关调节器 High Efficiency Dual 800/800mA Buck Switcher 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 |
| MIC2238-GSYML-TR | 功能描述:Buck Switching Regulator IC Positive Fixed 1.8V, 3.3V 2 Output 800mA 12-VFDFN Exposed Pad, 12-MLF? 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 功能:降压 输出配置:正 拓扑:降压 输出类型:固定 输出数:2 电压 - 输入（最小值）:2.5V 电压 - 输入（最大值）:5.5V 电压 - 输出（最小值/固定）:1.8V，3.3V 电压 - 输出（最大值）:- 电流 - 输出:800mA 频率 - 开关:2.5MHz 同步整流器:是 工作温度:-40°C ~ 125°C （TJ） 安装类型:表面贴装 封装/外壳:12-VFDFN 裸焊盘，12-MLF? 供应商器件封装:12-MLF?（4x4） 标准包装:1 |
| MIC2238-GWYML | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:2.5MHz Dual Phase PWM Buck Regulator |
| MIC2238-J4YML | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:2.5MHz Dual Phase PWM Buck Regulator |
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