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参数资料
| 型号： | LTC1772BES6#TR |
| 厂商： | Linear Technology |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM SOT23-6 |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 650kHz |
| 占空比： | 100% |
| 电源电压： | 2.5 V ~ 9.8 V |
| 降压： | 是 |
| 升压： | 无 |
| 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 ~ 85°C |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 包装： | 带卷 (TR) |
| 其它名称： | LTC1772BES6TR |
LTC1772B
APPLICATIONS INFORMATION
PC Board Layout Checklist
When laying out the printed circuit board, the following
checklist should be used to ensure proper operation of
the LTC1772B. These items are illustrated graphically in
the layout diagram in Figure 7. Check the following in
your layout:
1. Is the Schottky diode closely connected between ground
(Pin 2) and drain of the external MOSFET?
2. Does the (+) plate of C IN connect to the sense resistor
as closely as possible? This capacitor provides AC
current to the MOSFET.
3. Is the input decoupling capacitor (0.1μF) connected
closely between V IN (Pin 5) and ground (Pin 2)?
4. Connect the end of R SENSE as close to V IN (Pin 5) as
possible. The V IN pin is the SENSE + of the current
comparator.
5. Is the trace from SENSE – (Pin 4) to the Sense resistor
kept short? Does the trace connect close to R SENSE ?
6. Keep the switching node PGATE away from sensitive
small signal nodes.
7. Does the V FB pin connect directly to the feedback
resistors? The resistive divider R1 and R2 must be
connected between the (+) plate of C OUT and signal
ground.
1
I TH /RUN PGATE
6
+
C IN
V IN
R ITH
C ITH
2
3
LTC1772B
GND V IN
SENSE –
V FB
5
4
R SENSE
0.1μF
M1
D1
L1
+
C OUT
V OUT
R1
R2
BOLD LINES INDICATE HIGH CURRENT PATHS
1772 F06
Figure 7. LTC1772B Layout Diagram (See PC Board Layout Checklist)
1772bfa
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1772BIS6#PBF | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Step Down 2.5V to 9.8V Input 6-Pin TSOT-23 |
| LTC1772BIS6#TRMPBF | 功能描述:IC REG CTRLR BUCK PWM TSOT23-6 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 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:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC1772BIS6#TRPBF | 功能描述:IC REG CTRLR BUCK PWM TSOT23-6 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 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:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC1772CS6 | 制造商:Linear Technology 功能描述:Swithed-Mode Power Supply Controller, Current Mode Type, 3 Pin, Plastic, TO-236 |
| LTC1772CS6#PBF | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Step Down 2.5V to 9.8V Input 6-Pin TSOT-23 制造商:Linear Technology 功能描述:BUCK 2.8 - 20V 5A 1.23-18V 6SOT23 制造商:Linear Technology 功能描述:BUCK, 2.8 - 20V, 5A, 1.23-18V, 6SOT23 |
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