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参数资料
| 型号： | LT1612ES8#TR |
| 厂商： | Linear Technology |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.5A 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 可调至 0.6V |
| 输入电压： | 2 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 800kHz |
| 电流 - 输出： | 500mA |
| 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： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
LT1612
OPERATIO
Burst Mode Operation Defeat
To maintain high efficiency at light loads, the LT1612 will
automatically shift into Burst Mode operation (MODE = 0V
or floating). In this mode of operation the oscillator and
switch drive circuitry is alternately turned on and off,
reducing quiescent current to 160 μ A. This reduces power
V OUT
20mV/DIV
consumption but also adds low frequency voltage ripple to
the output. Figure 3 shows switching waveforms for a 5V
to 3.3V converter running in Burst Mode operation. Output
voltage ripple is approximately 20mV P-P . If the MODE pin
is pulled high, Burst Mode operation will be inhibited and
the oscillator runs continuously with no low frequency
ripple at the output. See Figures 4 and 5.
V OUT
200mV/DIV
AC COUPLED
AC COUPLED
I L
200mA/DIV
IL
200mA/DIV
I LOAD
10mA TO 310mA
5 μ s/DIV
1612 F03
0.1ms/DIV
1612 F04
Figure 3. Output Voltage Ripple is 20mV P-P for
the Circuit of Figure 1
V OUT
200mV/DIV
AC COUPLED
I L
200mA/DIV
I LOAD
10mA TO 300mA
Figure 4. Transient Response for the Circuit of Figure 1
with the MODE Pin Tied to Ground or Floating
0.1ms/DIV
1612 F05
Figure 5. With the MODE Pin Tied High, Low
Frequency Output Voltage Ripple Is No Longer Present
sn1612 1612fs
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1613 | 制造商:LINER 制造商全称:Linear Technology 功能描述:4A, 2MHz Dual Phase Step-Up DC/DC Converter in 3mm 3mm DFN |
| LT1613CS5 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 0.9V to 10V 5-Pin TSOT-23 |
| LT1613CS5#PBF | 制造商:Linear Technology 功能描述:1 34V 1.1V to 10V TSOT-23-5 制造商:Linear Technology 功能描述:DC/DC 1.1VIN MIN 1.4MHZ 34V 5SOT23 制造商:Linear Technology 功能描述:DC/DC, 1.1VIN MIN, 1.4MHZ, 34V, 5SOT23 制造商:Linear Technology 功能描述:IC, DC/DC CONVERTER, 5-SOT-23; Primary Input Voltage:10V; No. of Outputs:1; Output Voltage:34V; Output Current:200mA; No. of Pins:5; Operating Temperature Min:0C; Operating Temperature Max:70C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
| LT1613CS5#PBF | 制造商:Linear Technology 功能描述:IC DC/DC CONVERTER 5-SOT-23 制造商:Linear Technology 功能描述:IC, DC/DC CONVERTER, 5-SOT-23 |
| LT1613CS5#TR | 功能描述:IC REG BST FLYBACK SEPIC TSOT23 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 |
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