- 您现在的位置：买卖IC网 > PDF目录15293 > LTC3814IFE-5#TRPBF (Linear Technology)IC REG CTRLR BST PWM CM 16-TSSOP PDF资料下载
参数资料
| 型号： | LTC3814IFE-5#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 8/30页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM CM 16-TSSOP |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 占空比： | 90% |
| 电源电压： | 4.5 V ~ 55 V |
| 降压： | 无 |
| 升压： | 是 |
| 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 ~ 125°C |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页当前第8页第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
LTC3814-5
PIN FUNCTIONS
I OFF (Pin 1): Off-Time Current Input. Tie a resistor from
V OUT to this pin to set the one-shot timer current and
thereby set the switching frequency.
V OFF (Pin 2): Off-Time Voltage Input. Voltage trip point
for the on-time comparator. Tying this pin to an external
resistive divider from the input makes the off-time pro-
portional to V IN . The comparator defaults to 0.7V when
the pin is grounded and defaults to 2.4V when the pin is
connected to INTV CC .
V RNG (Pin 3): Sense Voltage Limit Set. The voltage at this
pin sets the nominal sense voltage at maximum output
current and can be set from 0.5V to 2V by a resistive
divider from INTV CC . The nominal sense voltage defaults
to 95mV when this pin is tied to ground, and 215mV when
tied to INTV CC .
PGOOD (Pin 4): Power Good Output. Open-drain logic
output that is pulled to ground when the output voltage
is not between ±10% of the regulation point. The output
voltage must be out of regulation for at least 125μs before
the power good output is pulled to ground.
I TH (Pin 5): Error Ampli?er Compensation Point and Cur-
rent Control Threshold. The current comparator threshold
increases with control voltage. The voltage ranges from
0V to 2.6V with 1.2V corresponding to zero sense voltage
(zero current).
V FB (Pin 6): Feedback Input. Connect V FB through a resistor
divider network to V OUT to set the output voltage.
RUN/SS (Pin 7): RUN/Soft-Start Input. For soft-start, a
capacitor to ground at this pin sets the ramp rate of the
maximum current sense threshold. Pulling this pin below
0.9V will shut down the LTC3814-5, turn off both of the
external MOSFET switches and reduce the quiescent sup-
ply current to 224μA.
SGND (Pin 8): Signal Ground. All small-signal components
should connect to this ground and eventually connect to
PGND at one point.
NDRV (Pin 9): Drive Output for External Pass Device of
the Linear Regulator for INTV CC . Connect to the gate of an
external NMOS pass device and a pull-up resistor to the
input voltage V IN or the output voltage V OUT .
EXTV CC (Pin 10): External Driver Supply Voltage. When
this voltage exceeds 4.7V, an internal switch connects
this pin to INTV CC through an LDO and turns off the exter-
nal MOSFET connected to NDRV, so that controller and
gate drive are drawn from EXTV CC .
INTV CC (Pin 11): Main Supply and Driver Supply Pin. All
internal circuits and bottom gate output driver are powered
from this pin. INTV CC should be bypassed to SGND and
PGND with a low ESR (X5R or better) 1μF capacitor in
close proximity to the LTC3814-5.
BG (Pin 12): Bottom Gate Drive. The BG pin drives the
gate of the bottom N-channel main switch MOSFET. This
pin swings from PGND to INTV CC .
PGND (Pin 13): Bottom Gate Return. This pin connects
to the source of the pull-down MOSFET in the BG driver
and is normally connected to ground.
SW (Pin 14): Switch Node Connection to Inductor and
Bootstrap Capacitor. Voltage swing at this pin is from a
Schottky diode (external) voltage drop below ground
to V OUT .
TG (Pin 15): Top Gate Drive. The TG pin drives the gate of
the top N-channel synchronous switch MOSFET. The TG
driver draws power from the BOOST pin and returns to the
SW pin, providing true ?oating drive to the top MOSFET.
BOOST (Pin 16): Top Gate Driver Supply. The BOOST pin
supplies power to the ?oating TG driver. BOOST should
be bypassed to SW with a low ESR (X5R or better) 0.1μF
capacitor. An additional fast recovery diode from INTV CC
to the BOOST pin will create a complete ?oating charge-
pumped supply at BOOST.
GND (Exposed Pad Pin 17): Ground. The Exposed Pad
must be soldered to PCB ground.
38145fc
8
相关PDF资料 |
PDF描述 |
|---|---|
| H2AAT-10102-Y4-ND | JUMPER-H1502TR/A2015Y/H1502TR 2" |
| LTC1625CS | IC REG CTRLR BUCK PWM CM 16-SOIC |
| H2AAT-10102-W4-ND | JUMPER-H1502TR/A2015W/H1502TR 2" |
| LTC3810IG#TRPBF | IC REG CTRLR BUCK PWM CM 28-SSOP |
| H2AAT-10102-V4-ND | JUMPER-H1502TR/A2015V/H1502TR 2" |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3816EFE#PBF | 功能描述:IC DC-DC CTLR S-PHASE 38TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:2,000 系列:- 应用:控制器，DSP 输入电压:4.5 V ~ 25 V 输出数:2 输出电压:最低可调至 1.2V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:30-TFSOP（0.173"，4.40mm 宽） 供应商设备封装:30-TSSOP 包装:带卷 (TR) |
| LTC3816EFE#TRPBF | 功能描述:IC CONTROLLER S-PHASE 38TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3816EUHF#PBF | 功能描述:IC DC-DC CTLR S-PHASE 32QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:2,000 系列:- 应用:控制器，DSP 输入电压:4.5 V ~ 25 V 输出数:2 输出电压:最低可调至 1.2V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:30-TFSOP（0.173"，4.40mm 宽） 供应商设备封装:30-TSSOP 包装:带卷 (TR) |
| LTC3816EUHF#TRPBF | 功能描述:IC CONTROLLER S-PHASE 32QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3816IFE#PBF | 功能描述:IC CONTROLLER S-PHASE 38TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
发布紧急采购，3分钟左右您将得到回复。