参数资料
型号: MIC4742YTSE
厂商: Micrel Inc
文件页数: 1/23页
文件大小: 0K
描述: IC REG BUCK ADJ 2A DL 16TSSOP
标准包装: 94
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 可调至 0.6V
输入电压: 2.9 V ~ 5.5 V
频率 - 开关: 2MHz
电流 - 输出: 2A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm)裸露焊盘
包装: 管件
供应商设备封装: 16-EPAD TSSOP
产品目录页面: 1093 (CN2011-ZH PDF)
其它名称: 576-3355-5
MIC4742
2 MHz Dual 2A Integrated Switch
Buck Regulator
General Description
Features
The Micrel MIC4742 is a high efficiency dual PWM buck
(step-down) regulator that provides dual 2A current output.
The MIC4742 operates at 2MHz. A proprietary internal
compensation technique allows a closed loop bandwidth of
over 200kHz.
The low on-resistance internal P-Channel MOSFET of the
MIC4742 allows efficiencies over 92%, reduces external
components count and eliminates the need for an
expensive current sense resistor.
The MIC4742 operates from 2.9V to 5.5V input and the
output can be adjusted down to 0.6V. The device can
operate with a maximum duty cycle of 100% for use in low-
dropout conditions.
The MIC4742 is available in the exposed pad 16-pin
3mm x 3mm MLF ? and EPAD TSSOP-16 packages with a
junction operating range from –40°C to +125°C.
All support documentation can be found on Micrel’s web
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2.9 to 5.5V supply voltage
2MHz PWM mode
2A Dual output
Greater than 92% efficiency
100% maximum duty cycle
Adjustable output voltage option down to 0.6V
Ultra-fast transient response
Ultra-small external components
Stable with a 1μH inductor and a 4.7μF output
capacitor
Fully integrated 2A MOSFET switches
Micro-power shutdown
Thermal shutdown and current limit protection
Available in a 3mm x 3mm 16-pin MLF ? and 16-pin
TSSOP
–40 ° C to +125 ° C junction temperature range
site at: www.micrel.com.
Applications
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Broadband: xDSL modems
Automotive satellite radios
HD STB, DVD/TV recorder
Computer peripherals: printers and graphic cards
FPGA/ASIC
General point of load
Typical Application
5.0Vin 3.3Vout Efficiency
100
98
96
94
92
90
88
86
84
82
80
0
0.4
0.8
1.2
1.6
2
OUTPUT CURRENT (A)
2A 2MHz Dual Buck Regulator
MLF and Micro LeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
March 2009
1
M9999-030209-D
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MIC4742YTSE TR 功能描述:直流/直流开关调节器 2 MHz Dual 2A Integrated Switch Buck Regulator 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
MIC4744 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:4 MHz Dual 2A Integrated Switch Buck Regulator
MIC4744YML 制造商:Micrel Inc 功能描述:Micrel MIC4744YML, Synchronous Step-Down Converter DC-DC Single 2.9V to 5.5V 2A 16-Pin MLF
MIC4744YML TR 功能描述:直流/直流开关调节器 4 MHz Dual 2A Integrated Switch Buck Regulator 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
MIC4744YML-TR 功能描述:Buck Switching Regulator IC Positive Adjustable 0.6V 2 Output 2A 16-VFQFN Exposed Pad, 16-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:可调式 输出数:2 电压 - 输入(最小值):2.9V 电压 - 输入(最大值):5.5V 电压 - 输出(最小值/固定):0.6V 电压 - 输出(最大值):5.5V 电流 - 输出:2A 频率 - 开关:4MHz 同步整流器:无 工作温度:-40°C ~ 125°C (TJ) 安装类型:表面贴装 封装/外壳:16-VFQFN 裸露焊盘,16-MLF? 供应商器件封装:16-MLF?(4x4) 标准包装:1