参数资料
| 型号： | MIC2182-3.3YSM |
| 厂商： | Micrel Inc |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 16-SSOP |
| 标准包装： | 77 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 占空比： | 86% |
| 电源电压： | 4.5 V ~ 32 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 ~ 85°C |
| 封装/外壳： | 16-SSOP（0.209"，5.30mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1092 (CN2011-ZH PDF) |
| 其它名称： | 576-2157 MIC2182-3.3YSM-ND |
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MIC2182
General Description
Micrel
MIC2182
High-Efficiency Synchronous Buck Controller
Features
Micrel’s MIC2182 is a synchronous buck (step-down) switch-
ing regulator controller. An all N-channel synchronous archi-
tecture and powerful output drivers allow up to a 20A output
current capabilty. The PWM and skip-mode control scheme
allows efficiency to exceed 95% over a wide range of load
current, making it ideal for battery powered applications, as
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4.5V to 32V Input voltage range
1.25V to 6V Output voltage range
95% efficiency
300kHz oscillator frequency
Current sense blanking
5 ? impedance MOSFET Drivers
well as high current distributed power supplies.
The MIC2182 operates from a 4.5V to 32V input and can
operate with a maximum duty cycle of 86% for use in low-
dropout conditions. It also features a shutdown mode that
reduces quiescent current to 0.1 μ A.
The MIC2182 achieves high efficiency over a wide output
current range by automatically switching between PWM and
skip mode. Skip-mode operation enables the converter to
maintain high efficiency at light loads by turning off circuitry
pertaining to PWM operation, reducing the no-load supply
current from 1.6mA to 600 μ A. The operating mode is inter-
nally selected according to the output load conditions. Skip
mode can be defeated by pulling the PWM pin low which
reduces noise and RF interference.
The MIC2182 is available in a 16-pin SOP (small-outline
? Drives N-channel MOSFETs
? 600 μ A typical quiescent current (skip-mode)
? Logic controlled micropower shutdown (I Q < 0.1 μ A)
? Current-mode control
? Cycle-by-cycle current limiting
? Built-in undervoltage protection
? Adjustable undervoltage lockout
? Easily synchronizable
? Precision 1.245V reference output
? 0.6% total regulation
? 16-pin SOP and SSOP packages
? Frequency foldback overcurrent protection
? Sustained short-circuit protection at any input voltage
? 20A output current capability
Applications
package) and SSOP (shrink small-outline package) with an
operating range from –40 ° C to +85 ° C.
Typical Application
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DC power distribution systems
Notebook and subnotebook computers
PDAs and mobile communicators
Wireless modems
Battery-operated equipment
V IN
4.5V to 30V*
R7
100k
10
C5
0.1 μ F
6
2
C4
1nF
1
MIC2182-3.3BSM
VIN VDD
BST
EN/UVLO HSD
PWM VSW
LSD
SS
PGND
D2
11 SD103BWS
14
C6
16 0.1 μ F
15
13
12
C9
4.7 μ F
16V
C11
22uf
35V
x2
Q2*
Si4884
Q1*
Si4884
L1
10 μ H
D1
B140
R2
0.02 ?
V OUT
3.3V/4A
C7
220uf
10V × 2
3
COMP
CSH
8
GND
C3
0.1 μ F
C2
R1
2k
5
SYNC
VOUT
VREF
9
7
C13, 1nF
* 30V maximum input voltage limit is due
to standard 30V MOSFET selection.
GND
2.2nF
SGND
4
C1
0.1 μ F
See “ Application Information ” section for
5V to 3.3V/10A and other circuits.
4.5V–30V* to 3.3V/4A Converter
Micrel, Inc. ? 1849 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
April 22, 2004
1
M9999-042204
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2182-5.0BM | 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 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 ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| MIC2182-5.0BM TR | 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 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 ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| MIC2182-5.0BSM | 功能描述:DC/DC 开关控制器 High EfficiencySynchronous Buck Controller SSOP Pkg 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 |
| MIC2182-5.0BSM TR | 功能描述:DC/DC 开关控制器 High EfficiencySynchronous Buck Controller SSOP Pkg 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 |
| MIC2182-5.0YM | 功能描述:DC/DC 开关控制器 High EfficiencySynchronous Buck Controller SO Pkg (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 |
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