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参数资料
| 型号： | LTC3112EDHD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST SYNC ADJ 16-DFN |
| 标准包装： | 2,500 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.5 V ~ 14 V |
| 输入电压： | 2.7 V ~ 15 V |
| PWM 型： | 电压模式，混合 |
| 频率 - 开关： | 750kHz |
| 电流 - 输出： | 2.5A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-DFN（5x4） |
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LTC3112
Regulated Output with V IN Above, Below or Equal to V OUT
2.7V to 15V Input Voltage Range
2.5V to 14V Output Voltage Range
2.5A Continuous Output Current: V IN ≥ 5V,
Output Current Monitor
Up to 95% Efficiency
750kHz Switching Frequency, Synchronizable
Internal N-Channel MOSFETs
Selectable Burst Mode ? Operation, I Q = 50μA
Shutdown Current < 1μA
Overvoltage Protection
Output Disconnect in Shutdown
Internal Soft-Start
Small, Thermally Enhanced 16-Lead (4mm × 5mm ×
3.3V or 5V from 1, 2 or 3 Li-Ion, Backup Capacitor Stack
Hand Held Inventory Terminals
RF Transmitters
12V Synchronous Boost Converter
Multiple Power Input Systems
LED Lighting with Current Regulation
12V Lead Acid Battery to 12V
FEATURES
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V OUT = 5V, PWM Mode
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Between 300kHz and 1.5MHz
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0.75mm) DFN or 20-Lead TSSOP Package
APPLICATIONS
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TYPICAL APPLICATION
15V, 2.5A Synchronous
Buck-Boost DC/DC
Converter
DESCRIPTION
The LTC ? 3112 is a fixed frequency synchronous buck-boost
DC/DC converter with an extended input and output range.
The unique 4-switch, single inductor architecture provides
low noise and seamless operation from input voltages
above, below or equal to the output voltage.
With an input range of 2.7V to 15V, the LTC3112 is well-
suited for a wide variety of single or multiple cell battery,
backup capacitor or wall adapter source applications. Low
R DS(ON) internal N-Channel MOSFET switches provide
highly efficient operation in applications with higher load
current requirements.
The LTC3112 features selectable PWM or Burst Mode
operation, an easily synchronized oscillator and output
disconnect in shutdown. An output current monitor circuit
allows the load current to be controlled or measured. Other
features include <1μA shutdown current, short circuit
protection, soft-start, current limit and thermal shutdown.
The LTC3112 is offered in both a 16-pin (4mm × 5mm ×
0.75mm) DFN and 20-pin TSSOP packages.
L , LT, LTC, LTM, Linear Technology Burst Mode, LTSpice and the Linear logo are registered
trademarks and No R SENSE and PowerPath are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents,
including 5481178.
Efficiency at 5V OUT
5V, 750kHz Wide Input Voltage Buck-Boost Regulator
4.7μH
100
90
BURST
PWM
0.1μF
SW1
SW2
0.1μF
80
V IN
2.7V TO 15V
10μF
BURST PWM
OFF ON
1μF
BST1 BST2
V IN V OUT
V CC LTC3112 COMP
PWM/SYNC
FB
RUN I OUT
GND OVP
680pF 33k
845k
22pF
TO ADC
1V PER AMP
100pF 42.2k
5V/2.5A, V IN > 5V
V OUT
47pF
10k
47μF
158k
3112 TA01
70
60
50
40
30
0.0001
0.001
0.01 0.1
LOAD CURRENT (A)
1
2.7V IN
5.0V IN
12V IN
3112 TA02
1
For more information www.linear.com/LTC3112
3112fb
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3112EFE#PBF | 功能描述:IC REG BUCK BOOST SYNC 20-TSSOP 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 |
| LTC3112EFE#PBF | 制造商:Linear Technology 功能描述:IC DC-DC CONV 1.5MHz TSSOP20 |
| LTC3112EFE#TRPBF | 功能描述:IC REG BUCK BST SYNC ADJ 20TSSOP 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 |
| LTC3112EFEPBF | 制造商:Linear Technology 功能描述:15V 2.5A Synch Buck-Boost DC/DC TSSOP20 |
| LTC3112IDHD#PBF | 功能描述:IC REG BUCK BST SYNC ADJ 16-DFN 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 |
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