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| 型号： | LTC1754ES6-3.3#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHED CAP 3.3V SOT23-6 |
| 标准包装： | 2,500 |
| 类型： | 切换式电容器（充电泵） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 3.3V |
| 输入电压： | 2 V ~ 4.4 V |
| PWM 型： | Burst Mode? |
| 频率 - 开关： | 600kHz |
| 电流 - 输出： | 40mA |
| 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： | 带卷 (TR) |
| 供应商设备封装： | SOT-23-6 |
LTC1754-3.3/LTC1754-5
APPLICATIO S I FOR ATIO
signal will keep V OUT in regulation under no-load condi-
tions. As the V OUT load current increases, the frequency
with which the LTC1754 is taken out of shutdown must
also be increased.
Layout Considerations
Due to high switching frequency and high transient cur-
rents produced by the LTC1754, careful board layout is
necessary. A true ground plane and short connections to
all capacitors will improve performance and ensure proper
V OUT
10 μ F
SHDN PIN
WAVEFORM
1
2
3
V OUT C +
LTC1754-X
GND V IN
SHDN C –
6
5
4
1 μ F
10 μ F
V IN
regulation under all conditions. Figure 4 shows the recom-
mended layout configuration
V IN
LOW I Q MODE (2Hz TO 100Hz, 2% TO 5% DUTY CYCLE)
1754 F02
V OUT
10 μ F
10 μ F
1 μ F
Figure 2. Ultralow Quiescent Current Regulated Supply
GND
LTC1754-X
SHDN
1754-5 F04
T A = 25 ° C
6
I OUT = 0 μ A
5 C FLY = 1 μ F
Figure 4. Recommended Layout
4
3
2
1
LTC1754-5
LTC1754-3.3
Thermal Management
For higher input voltages and maximum output current,
there can be substaintial power dissipation in the LTC1754.
If the junction temperature increases above approximately
150 ° C, the thermal shutdown circuitry will automatically
deactivate the output. To reduce the maximum junction
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
temperature, a good thermal connection to the PC board
is recommended. Connecting the GND pin (Pin 2) to a
SUPPLY VOLTAGE (V)
1754 F03
ground plane and maintaining a solid ground plane under
the device on at least two layers of the PC board can reduce
8
Figure 3. No-Load Supply Current vs Supply Voltage
for the Circuit Shown in Figure 2
the thermal resistance of the package and PC board
system to about 150 ° C/W.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1754ES6-5 | 制造商:Linear Technology 功能描述:Charge Pump STPUP 5V 50mA 6-Pin TSOT-23 |
| LTC1754ES6-5#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER 600KHZ 5V 5 制造商:Linear Technology 功能描述:DC-DC CONVERTER, 700KHZ, 5V, 50mA, SOT-23-6; Primary Input Voltage:5.5V; No. of Outputs:1; Output Voltage:5V; Output Current:50mA; No. of Pins:6; Operating Temperature Min:-40C; Operating Temperature Max:85C ;RoHS Compliant: Yes 制造商:Linear Technology 功能描述:DC-DC CONVERTER, 600KHZ, 5V, 50mA, SOT-23-6; Primary Input Voltage:5.5V; No. of Outputs:1; Output Voltage:5V; Output Current:50mA; No. of Pins:6; Operating Temperature Min:-40C; Operating Temperature Max:85C ;RoHS Compliant: Yes |
| LTC1754ES6-5#TR | 功能描述:IC REG SWITCHED CAP 5V SOT23-6 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:500 系列:- 类型:切换式电容器（充电泵），反相 输出类型:固定 输出数:1 输出电压:-3V 输入电压:2.3 V ~ 5.5 V PWM 型:Burst Mode? 频率 - 开关:900kHz 电流 - 输出:100mA 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 细型，TSOT-23-6 包装:带卷 (TR) 供应商设备封装:TSOT-23-6 其它名称:LTC1983ES6-3#TRMTR |
| LTC1754ES6-5#TRM | 功能描述:IC REG SWITCHED CAP 5V SOT23-6 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:500 系列:- 类型:切换式电容器（充电泵），反相 输出类型:固定 输出数:1 输出电压:-3V 输入电压:2.3 V ~ 5.5 V PWM 型:Burst Mode? 频率 - 开关:900kHz 电流 - 输出:100mA 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 细型，TSOT-23-6 包装:带卷 (TR) 供应商设备封装:TSOT-23-6 其它名称:LTC1983ES6-3#TRMTR |
| LTC1754ES6-5#TRMPBF | 功能描述:IC REG SWITCHED CAP 5V SOT23-6 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色产品:BD91x Series Step-Down Regulators 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:两者兼有 输出数:2 输出电压:3.3V，0.8 V ~ 2.5 V 输入电压:4.5 V ~ 5.5 V PWM 型:电流模式 频率 - 开关:1MHz 电流 - 输出:1.5A 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:20-VFQFN 裸露焊盘 包装:带卷 (TR) 供应商设备封装:VQFN020V4040 产品目录页面:1373 (CN2011-ZH PDF) 其它名称:BD9152MUV-E2TR |
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