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参数资料
| 型号： | LT1738IG#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 19/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM CM 20-SSOP |
| 标准包装： | 66 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 250kHz |
| 占空比： | 93.5% |
| 电源电压： | 2.55 V ~ 20 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 是 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 包装： | 管件 |
LT1738
APPLICATIO S I FOR ATIO
There are two other loops to pay attention to. The current
slew involves a high bandwidth control that goes through
the MOSFET switch, the sense resistor and into the CS pin
of the part and out the GATE pin to the MOSFET. Trace
inductance and resistance should be kept low on the GATE
drive trace. The CS trace should have low inductance.
MORE HELP
AN70 contains information about low noise switchers and
measurement of noise and should be consulted. AN19 and
AN29 also have general knowledge concerning switching
regulators. Also, our Application Department is always
ready to lend a helping hand.
Finally, care should be taken with the CAP pin. The part will
tolerate stray capacitance to ground on this pin (<5pFs).
However, stray capacitance to the MOSFET drain should
be minimized. This path would provide an alternate ca-
pacitive path for the voltage slew.
PACKAGE DESCRIPTIO
G Package
20-Lead Plastic SSOP (5.3mm)
(Reference LTC DWG # 05-08-1640)
6.90 – 7.50*
1.25 ± 0.12
(.272 – .295 )
20 19 18 17 16 15 14 13 12 11
7.8 – 8.2
5.3 – 5.7
7.40 – 8.20
(.291 – .323)
0.42 ± 0.03
RECOMMENDED SOLDER PAD LAYOUT
5.00 – 5.60**
(.197 – .221)
0.65 BSC
0 ° – 8 °
1 2 3 4 5 6 7 8 9 10
2.0
(.079)
0.09 – 0.25 0.55 – 0.95
(.0035 – .010) (.022 – .037)
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
MILLIMETERS
2. DIMENSIONS ARE IN
(INCHES)
0.65
(.0256)
BSC
0.22 – 0.38
(.009 – .015)
0.05
(.002)
G20 SSOP 0802
3. DRAWING NOT TO SCALE
* DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED .152mm (.006") PER SIDE
** DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE
1738fa
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
19
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1739 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:TRANSISTOR | BJT | NPN | 100V V(BR)CEO | 300MA I(C) | TO-39 |
| LT1739CFE | 功能描述:IC AMP XDSL LINE DRV DUAL20TSSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1739CFE#PBF | 功能描述:IC AMP LINE DVR DUAL 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1739CFE#TR | 功能描述:IC AMP XDSL LINE DRV DUAL20TSSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1739CFE#TRPBF | 功能描述:IC AMP XDSL LINE DRV DUAL20TSSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
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