- 您现在的位置：买卖IC网 > PDF目录15503 > MIC2184YM (Micrel Inc)IC REG CTRLR BUCK PWM CM 16-SOIC PDF资料下载
参数资料
| 型号： | MIC2184YM |
| 厂商： | Micrel Inc |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 16-SOIC |
| 标准包装： | 48 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 440kHz |
| 占空比： | 100% |
| 电源电压： | 2.9 V ~ 14 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1092 (CN2011-ZH PDF) |
| 其它名称： | 576-2161 MIC2184YM-ND |
MIC2184
General Description
Micrel, Inc.
MIC2184
Low Voltage Buck PWM Control IC
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
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/2 pin to V DD . This allows the user to optimize efficiency
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 IN P pin,
allowing enhanced gate drive, hence higher efficiencies,
despite low input voltages.
MIC2184 features a 1 μ A shutdown mode, and a program-
? FrequOut oscillator output allows simple charge pump
implementation in low voltage systems
? 1.245V reference output
? Front edge blanking
? 5 ? output driver
? Soft start
? PWM current mode control
? 1 μ A 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
Applications
mable undervoltage lockout, making it well suited for portable
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
V IN = 3.3V
?
?
?
?
?
?
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
120 μ F (x2)
6.3V
1
VINA
16
VINP
CSH
9
15m ?
100
95
MIC2184 EFFICIENCY
7
EN/UVLO
CSL
8
90
2
16
FreqOut
FREQ/2
MIC2184
OUTP
14
Q3
Si9803DY(x2)
V OUT
2.5V @5A
85
80
75
10
4
VDD
COMP
4.7 μ H
70
65
60
V IN = 3.3V
V OUT = 2.5V
0
3
13
SS
VREF
SYNC
SGND
PGND
FB
12
6
220 μ F(x2)
6.3V
55
50
f S = 200kHz
1 2 3 4
OUTPUT CURRENT (A)
5
11
5
Adjustable Output Buck Converter
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
April 2005
1
M9999-042205
相关PDF资料 |
PDF描述 |
|---|---|
| SPD62-472M | INDUCTOR PWR SHIELDED 4.70UH SMD |
| LT3757IDD#PBF | IC REG CTRLR BST FLYBK INV 10DFN |
| MIC2182-5.0YM | IC REG CTRLR BUCK PWM CM 16-SOIC |
| LTC1622IS8#PBF | IC REG CTRLR BUCK PWM CM 8-SOIC |
| MIC2182-5.0YSM | IC REG CTRLR BUCK PWM CM 16-SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2184YM TR | 功能描述:DC/DC 开关控制器 SO-16 Low Vin Buck PWM Control IC (Lead Free) RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MIC2184YQS | 功能描述:DC/DC 开关控制器 SO-16 Low Vin Synchronous Buck PWM Control IC (Lead Free) RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MIC2184YQS TR | 功能描述:DC/DC 开关控制器 SO-16 Low Vin Synchronous Buck PWM Control IC (Lead Free) RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MIC2185 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Low Voltage Synchronous Boost PWM Control IC |
| MIC2185_05 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Low Voltage Synchronous Boost PWM Control IC |
发布紧急采购，3分钟左右您将得到回复。