- 您现在的位置：买卖IC网 > PDF目录1828 > LTC3112EFE#PBF (Linear Technology)IC REG BUCK BOOST SYNC 20-TSSOP PDF资料下载
参数资料
| 型号： | LTC3112EFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 9/32页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BOOST SYNC 20-TSSOP |
| 标准包装： | 74 |
| 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： | 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 20-TSSOP-EP |
第1页第2页第3页第4页第5页第6页第7页第8页当前第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
LTC3112
PIN FUNCTIONS
(DFN/TSSOP)
V OUT = 0.8V ? ? 1 +
?
V OVP = 0.83V ? ? 1 +
?
COMP (Pin 1/Pin 2): Error Amp Output. An R-C network
connected from this pin to FB sets the loop compensation
for the voltage converter.
FB (Pin 2/Pin 3): Feedback Voltage Input. Connect V OUT
resistor divider tap to this pin. The output voltage can
be adjusted from 2.5V to 14V by the following equation:
? R1 ?
? R2 ?
where R1 is the resistor between V OUT and FB and R2 is
the resistor between FB and GND.
OVP (Pin 3/Pin 4): Overvoltage Protection Input. The
common point of a resistor divider between V OUT and GND
can also be used to program the overvoltage protection
to a lower voltage by the following equation:
? R3 ?
? R4 ?
where R3 is the resistor between V OUT and OVP and R4
is the resistor between OVP and GND.
V IN (Pins 4, 5/Pins 5, 6): Input Supply Voltage. This pin
should be bypassed to the ground plane with at least
10μF of low ESR, low ESL ceramic capacitance. Place this
capacitor as close to the pin as possible and have as short
a return path to the ground plane as possible.
RUN (Pin 6/Pin 7): Shutdown Control Input. Operation
will be disabled when the voltage is forced below 0.75V
(typical) and less than 1μA of quiescent current will be
consumed.
I OUT (Pin 7/Pin 8): A Current approximately 24μA/A of
the D Switch Output Current is Sourced from this Pin.
An R-C circuit can be used to control the average output
current or provide an analog output current monitor (see
Applications Information section).
V OUT (Pin 8/Pin 9): Regulated Output Voltage. This pin
should be connected to a low ESR ceramic capacitor of at
least 47μF. The capacitor should be placed as close to the
pin as possible and have a short return to the ground plane.
SW2 (Pins 9, 10/Pins 12, 13): Internal switches C and D
and the external inductor are connected here.
BST2 (Pin 11/Pin 14): Boosted Floating Driver Supply
for D-Switch Driver. Connect a 0.1μF capacitor from this
pin to SW2.
SW1 (Pins 12, 13/Pins 15, 16): Internal switches A and
B and the external inductor are connected here.
BST1 (Pin 14/Pin 17): Boosted Floating Driver Supply
for A-Switch Driver. Connect a 0.1μF capacitor from this
pin to SW1.
V CC (Pin 15/Pin 18): External Capacitor Connection for
the Regulated V CC Supply. This supply is used to operate
internal circuitry and switch drivers. V CC will track V IN up
to 4.2V, but will maintain this voltage when V IN > 4.2V.
Connect a 1μF ceramic capacitor from this pin to GND.
PWM/SYNC (Pin 16/Pin 19): Burst Mode Control and Syn-
chronization Input. A DC voltage <0.5V commands Burst
Mode operation, >1.5V commands 750kHz fixed frequency
mode. A digital pulse train between 300kHz and 1500kHz
applied to this pin will override the internal oscillator and
set the operating frequency. The pulse train should have
minimum high or low times greater than 100ns (Note 7).
Note the LTC3112 has reduced power capability when
operating in Burst Mode operation. Refer to the Operation
section of this data sheet for details.
GND (Exposed Pad Pin 17/Pins 1, 10, 11, 20, Exposed
Pad Pin 21): Ground. Small-Signal and Power Ground
for the IC. The exposed pad must be soldered to the PCB
and electrically connected to ground through the shortest
and lowest impedance connection possible. The bulk of
the heat flow is through this pad, so printed circuit board
design has an impact on the thermal performance of the
IC. See PCB Layout and Thermal Considerations sections
for more details.
9
For more information www.linear.com/LTC3112
3112fb
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3113IFE#TRPBF | IC REG BUCK BOOST ADJ 3A 20TSSOP |
| LTC3115IFE-1#TRPBF | IC REG BUCK BOOST ADJ 20-TSSOP |
| LTC3125EDCB#TRPBF | IC REG BOOST SYNC ADJ 1.2A 8DFN |
| LTC3200EMS8#TRPBF | IC REG SWITCHED CAP DBL 8MSOP |
| LTC3203BEDD-1#TRPBF | IC REG BST SWITCHED CAP 5V 10DFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| LTC3112IDHD#TRPBF | 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 |
| LTC3112IFE#PBF | 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 |
| LTC3112IFE#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 |
| LTC3113 | 制造商:LINER 制造商全称:Linear Technology 功能描述:40V, 2A Synchronous Buck-Boost DC/DC |
发布紧急采购，3分钟左右您将得到回复。