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参数资料
| 型号： | LT1912EMSE#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 4.2 A SWITCHING REGULATOR, 240 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | LEAD FREE, PLASTIC, MSOP-10 |
| 文件页数： | 1/24页 |
| 文件大小： | 365K |
| 代理商： | LT1912EMSE#PBF |
LT1912
1
1912fa
TYPICAL APPLICATION
APPLICATIONS
36V, 2A, 500kHz Step-Down
Switching Regulator
TheLT1912isanadjustablefrequency(200kHzto500kHz)
monolithic step-down switching regulator that accepts
input voltages up to 36V. A high efficiency 0.25Ω switch
is included on the die along with a boost Schottky diode
and the necessary oscillator, control and logic circuitry.
Current mode topology is used for fast transient response
and good loop stability. The LT1912 allows the use of
ceramic capacitors resulting in low output ripple while
keeping total solution size to a minimum. The low current
shutdown mode reduces input supply current to less than
1A while a resistor and capacitor on the RUN/SS pin
provide a controlled output voltage ramp (soft-start). The
LT1912 is available in 10-pin MSOP and 3mm
× 3mm DFN
packages with exposed pads for low thermal resistance.
■
Automotive Battery Regulation
■
Set-Top Box
■
Distributed Supply Regulation
■
Industrial Supplies
■
Wall Transformer Regulation
3.3V Step-Down Converter
SW
FB
VC
RT
VIN
BD
VIN
4.5V TO 36V
VOUT
3.3V
2A
4.7F
0.47F
470pF
47F
100k
20k
68.1k
6.8H
316k
GND
OFF ON
LT1912
1912 TA01
RUN/SS
BOOST
SYNC
Efficiency
LOAD CURRENT (A)
0
EFFICIENCY
(%)
50
0.5
1.0
1.5
2
1912 TA01b
60
100
90
80
70
VIN = 12V
L = 6.8F
F = 500kHz
VOUT = 3.3V
VOUT = 5V
■
Wide Input Range: Operation From 3.6V to 36V
■
2A Maximum Output Current
■
Adjustable Switching Frequency: 200kHz to 500kHz
■
Low Shutdown Current: IQ < 1A
■
Integrated Boost Diode
■
Synchronizable Between 250kHz to 500kHz
■
Saturating Switch Design: 0.25Ω On-Resistance
■
0.790V Feedback Reference Voltage
■
Output Voltage: 0.79V to 20V
■
Soft-Start Capability
■
Small 10-Pin Thermally Enhanced MSOP and
(3mm
× 3mm) DFN Packages
FEATURES
DESCRIPTION
L
, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1912EMSE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:36V, 2A, 500kHz Step-Down Switching Regulator |
| LT1913 | 制造商:LINER 制造商全称:Linear Technology 功能描述:25V, 3.5A, 2.4MHz Step-Down Switching Regulator |
| LT1913EDD#PBF | 功能描述:IC REG BUCK ADJ 3.5A 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT1913EDD#TRPBF | 功能描述:IC REG BUCK ADJ 3.5A 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT1913EDD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:25V, 3.5A, 2.4MHz Step-Down Switching Regulator |
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