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MIC2184BQS PDF预览

MIC2184BQS

更新时间: 2024-11-10 22:15:47
品牌 Logo 应用领域
麦瑞 - MICREL 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管信息通信管理
页数 文件大小 规格书
12页 78K
描述
Low Voltage Buck PWM Control IC Final Information

MIC2184BQS 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:QSOP-16针数:16
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.18
Is Samacsys:N其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 1.3 TO 12 V
模拟集成电路 - 其他类型:SWITCHING CONTROLLER控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:14 V
最小输入电压:2.9 V标称输入电压:5 V
JESD-30 代码:R-PDSO-G16JESD-609代码:e0
长度:4.9 mm湿度敏感等级:1
功能数量:1端子数量:16
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:0.001 A标称输出电压:3 V
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装等效代码:SSOP16,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH峰值回流温度(摄氏度):240
认证状态:Not Qualified座面最大高度:1.75 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:SINGLE最大切换频率:440 kHz
技术:BICMOS温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn85Pb15)端子形式:GULL WING
端子节距:0.635 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:3.9116 mm
Base Number Matches:1

MIC2184BQS 数据手册

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MIC2184  
Low Voltage Buck PWM Control IC  
Final Information  
General Description  
Features  
Micrel’s MIC2184 is a high efficiency PWM buck control IC.  
With its wide input voltage range of 2.9V to 14V, the MIC2184  
can be used to efficiently step voltages down in 1- or 2-cell Li  
Ion battery powered applications, as well as in fixed 3.3V, 5V,  
or 12V systems.  
• Input voltage range: 2.9V to 14V  
• >90% efficiency  
• Oscillator frequency of 400kHz  
• Frequency divide-by-two pin  
• Frequency sync to 600kHz  
• FrequOut oscillator output allows simple charge pump  
implementation in low voltage systems  
• 1.245V reference output  
• Front edge blanking  
• 5output driver  
• Soft start  
• PWM current mode control  
• 1µA shutdown current  
• Cycle-by-cycle current limiting  
• Frequency foldback short circuit protection  
• Adjustable under-voltage lockout  
• 16 pin narrow-body SOIC and QSOP package options  
Efficiencies over 90% are achievable over a wide range of  
load conditions with the MIC2184’s PWM control scheme.  
The operating frequency can be divided by two by raising the  
FREQ/2pintoV . Thisallowstheusertooptimizeefficiency  
DD  
versus board space. It also allows the MIC2184 to be exter-  
nally synchronized to frequencies below its nominal 400KHz.  
The MIC2184 features an oscillator output, FreqOut, which  
can be used to implement a simple charge pump in low  
voltage applications. The output of the charge pump can be  
fed into the gate drive power circuitry via the V P pin,  
IN  
allowing enhanced gate drive, hence higher efficiencies,  
despite low input voltages.  
Applications  
• 3.3V to 2.5V/1.8V/1.5V conversion  
• DC power distribution systems  
• Wireless Modems  
• ADSL line cards  
• 1-and 2-cell Li Ion battery operated equipment  
• Satellite Phones  
MIC2184 features a 1µA shutdown mode, and a program-  
mableundervoltagelockout, makingitwellsuitedforportable  
applications.  
The MIC2184 is available in 16 pin SOP and QSOP package  
options with a junction temperture range range from –40°C  
to +125°C.  
Typical Application  
VIN = 3.3V  
16  
15m  
120µF (x2)  
MIC2184 EFFICIENCY  
VINP  
6.3V  
100  
1
9
VINA  
CSH  
CSL  
95  
90  
85  
7
2
8
EN/UVLO  
FreqOut  
FREQ/2  
VDD  
14  
OUTP  
Q3  
80  
75  
70  
65  
60  
55  
50  
VOUT  
Si9803DY(x2)  
16  
10  
4
2.5V @5A  
MIC2184  
4.7µH  
V
V
f
= 3.3V  
IN  
OUT  
= 2.5V  
= 200kHz  
COMP  
3
12  
6
220µF(x2)  
6.3V  
SS  
PGND  
FB  
S
13  
VREF  
0
1
2
3
4
5
OUTPUT CURRENT (A)  
SYNC SGND  
11  
5
Adjustable Output Buck Converter  
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com  
December 10, 2001  
1
MIC2184  

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