- 您现在的位置：买卖IC网 > PDF目录1822 > LT1616ES6#TRM (Linear Technology)IC REG BUCK 3.3V/5V 0.6A SOT23-6 PDF资料下载
参数资料
| 型号： | LT1616ES6#TRM |
| 厂商： | Linear Technology |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 3.3V/5V 0.6A SOT23-6 |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 3.3V，5V |
| 输入电压： | 3.6 V ~ 25 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.4MHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 包装： | 标准包装 |
| 供应商设备封装： | SOT-23-6 |
| 其它名称： | LT1616ES6#TRMDKR |
LT1616
APPLICATIO S I FOR ATIO
Shorted Input Protection
If the inductor is chosen so that it won’t saturate exces-
sively, an LT1616 buck regulator will tolerate a shorted
output. There is another situation to consider in systems
where the output will be held high when the input to the
LT1616 is absent. This may occur in battery charging
applications or in battery backup systems where a battery
or some other supply is diode OR-ed with the LT1616’s
output. If the V IN pin is allowed to float and the SHDN pin
is held high (either by a logic signal or because it is tied to
V IN ), then the LT1616’s internal circuitry will pull its
quiescent current through its SW pin. This is fine if your
system can tolerate a few mA in this state. If you ground
D4
the SHDN pin, the SW pin current will drop to essentially
zero. However, if the V IN pin is grounded while the output
is held high, then parasitic diodes inside the LT1616 can
pull large currents from the output through the SW pin and
the V IN pin. Figure 7 shows a circuit that will run only when
the input voltage is present and that protects against a
shorted or reversed input.
PCB Layout
For proper operation and minimum EMI, care must be
taken during printed circuit board layout. Figure 8 shows
the high current paths in the buck regulator circuit. Note
that large, switched currents flow in the power switch, the
V IN
5
V IN
BOOST
1
LT1616
100k 4
SHDN
SW
6
V OUT
GND
FB
100k
D4: MBR0530
2
3
1616 F07
BACKUP
Figure 7. Diode D4 Prevents a Shorted Input from Discharging a
Backup Battery Tied to the Output; It Also Protects the Circuit from a
Reversed Input. The LT1616 Runs Only When the Input is Present
V IN
SW
V IN
SW
GND
I C1
(a)
GND
V SW
(b)
V IN
SW
L1
C1
GND
D1
C2
1616 F08
(c)
Figure 8. Subtracting the Current When the Switch is On (a) from the Current When the Switch is Off (b) Reveals the Path of the High
Frequency Switching Current (c). Keep This Loop Small. The Voltage on the SW and BOOST Nodes Will Also be Switched; Keep These
Nodes as Small as Possible. Finally, Make Sure the Circuit is Shielded with a Local Ground Plane
11
相关PDF资料 |
PDF描述 |
|---|---|
| LT1617ES5-1#TRM | IC REG INV ADJ 0.1A TSOT23-5 |
| LT1618EMS#TRPBF | IC REG BOOST ADJ 1.5A 10MSOP |
| LT1619EMS8#PBF | IC REG CTRLR PWM CM 8-MSOP |
| LT1676IS8#TRPBF | IC REG BUCK ADJ 0.7A 8SOIC |
| LT1680ISW#PBF | IC REG CTRLR BST PWM CM 16-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1616ES6TRMPBF | 制造商:Linear Technology 功能描述:LT1616 adj PWM 600mA SD dc-dc converter |
| LT1617 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Inverting Micropower DC/DC Converter with Schottky in ThinSOT Package |
| LT1617-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Inverting Micropower DC/DC Converter with Schottky in ThinSOT Package |
| LT1617ES5 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Inverting DC/DC Converters in SOT-23 |
| LT1617ES5#PBF | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:SP-SWREG/Monolithic, CUT TAPE Micropower Inverting DC/DC Converters in SOT-23 制造商:Linear Technology 功能描述:IC, DC/DC CONVERTER, 5-SOT-23, Primary Input Voltage:12V, No. of Outputs:1, Output Voltage:34V, Output Current:350mA, No. of Pins:5, Operating Temperature Min:-40C, Operating Temperature Max:85C, MSL:MSL 1 - Unlimited , RoHS Compliant: Yes |
发布紧急采购，3分钟左右您将得到回复。