参数资料
型号: MIC2821-4GMSYML TR
厂商: Micrel Inc
文件页数: 3/17页
文件大小: 0K
描述: IC PWR MGMT DGTL TRPL LDO 16-MLF
标准包装: 1
应用: 手持/移动设备
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: 16-VFQFN 裸露焊盘,16-MLF?
供应商设备封装: 16-MLF?(4x4)
包装: 标准包装
产品目录页面: 1086 (CN2011-ZH PDF)
其它名称: 576-3084-6
Micrel, Inc.
Pin Configuration
MIC2811/2821
EN1
BIAS
SGND
PGND
VIN1
LDO1
VIN
LDO3
EN1
BIAS
SGND
PGND
VIN1
LDO1
VIN
LDO3
16-Pin 3mm x 3mm MLF (ML)
16-Pin 3mm x 3mm MLF (ML)
Pin Description
MIC2811
(Top View)
?
MIC2821
(Top View)
?
Pin Number
MIC2811
1
Pin Number
MIC2821
1
Pin Name
EN1
Pin Name
Enable Input (LDO 1). Active High Input. Logic High = On; Logic Low = Off;
Do not leave floating.
2
2
BIAS
Internal circuit bias supply. It must be de-coupled to signal ground with a
0.1 μ F capacitor and should not be loaded.
3
4
5
6
7
8
9
10
11
12
13
3
4
5
6
7
8
9
10
11
12
13
SGND
PGND
SW
DVIN
VIN2
LDO2
LDO3
VIN
LDO1
VIN1
FB
Signal ground.
Power ground.
Switch (Output): Internal power MOSFET output switches.
Power Supply for DC/DC converter. Must be tied to VIN.
Power Supply to LDO2.
Output of LDO2.
Output of LDO3.
Supply to bias circuitry and power to LDO3, must be tied to DVIN.
Output of LDO1.
Power Supply to LDO1.
Feedback input to the error amplifier of the DC/DC converter.
Adjust version: Use external resistor divider from DC/DC output to set VOUT.
Fixed voltage version: Connect directly to VOUT of the DC/DC converter.
14
N/A
BYP
Reference Bypass. Connect external 0.1 μ F to GND to reduce output noise.
May be left open. Do not connect directly to GND.
N/A
14
EN3
Enable Input (LDO3). Active High Input. Logic High = On; Logic Low = Off;
Do not leave floating.
15
N/A
EN
Enable Input (DC/DC and LDO3). Active High Input. Logic High = On; Logic
Low = Off; Do not leave floating.
N/A
15
EN
Enable Input (DC/DC). Active High Input. Logic High = On; Logic Low = Off;
Do not leave floating.
16
16
EN2
Enable Input (LDO2). Active High Input. Logic High = On; Logic Low = Off;
Do not leave floating.
April 2008
3
M9999-042208-A
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