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参数资料
| 型号： | LTC3528BEDDB#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 10/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 1A 8DFN |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.6 V ~ 5.25 V |
| 输入电压： | 0.5 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 1A |
| 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-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-DFN（3x2） |
LTC3528/LTC3528B
OPERATION
(Refer to Block Diagram)
Burst Mode OPERATION
The LTC3528 will automatically enter Burst Mode opera-
tion at light load current and return to fixed frequency
PWM mode when the load increases. Refer to the Typical
Performance Characteristics to see the output load Burst
Mode threshold vs V IN . The load at which Burst Mode
operation is entered can be changed by adjusting the
inductor value. Raising the inductor value will lower the
load current at which Burst Mode operation is entered.
In Burst Mode operation, the LTC3528 continues switch-
ing at a fixed frequency of 1MHz, using the same error
amplifier and loop compensation for peak current mode
control. This control method minimizes output transients
when switching between modes. In Burst Mode opera-
tion, energy is delivered to the output until it reaches the
nominal regulated value, then the LTC3528 transitions to
sleep mode where the outputs are off and the LTC3528
consumes only 12μA of quiescent current from V OUT . Once
the output voltage has drooped slightly, switching resumes
again. This maximizes efficiency at very light loads by
minimizing switching and quiescent current losses. Burst
Mode output ripple, which is typically 1% peak-to-peak,
can be reduced by using more output capacitance (10μF
or greater).
As the load current increases, the LTC3528 automatically
leaves Burst Mode operation. Note that larger output ca-
pacitor values may cause this transition to occur at lighter
loads. The regulator will also leave Burst Mode operation if
a load transient occurs which causes the inductor current
to repeatedly reach current limit. Once the LTC3528 has left
Burst Mode operation and returned to normal operation,
it will remain there until the output load is reduced below
the Burst threshold.
Burst Mode operation is inhibited during start-up and
until soft-start is done and V OUT is at least 0.24V greater
than V IN .
The LTC3528B features continuous PWM operation at
1MHz. At very light loads, the LTC3528B will exhibit pulse-
skip operation.
3528fd
10
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相关代理商/技术参数 |
参数描述 |
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| LTC3528EDDB#PBF | 制造商:Linear Technology 功能描述:DP-SWREG/Monolithic, Cut Tape 1A, 1MHz Synch Boost converter w/ Output Disconnec |
| LTC3528EDDB#TRMPBF | 功能描述:IC REG BOOST SYNC ADJ 1A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 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:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LTC3528EDDB#TRPBF | 功能描述:IC REG BOOST SYNC ADJ 1A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 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:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
| LTC3528EDDB-2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:1A, 2MHz Synchronous Step-Up DC/DC Converter in 2mm × 3mm DFN |
| LTC3528EDDB-2#PBF | 制造商:Linear Technology 功能描述:BOOST 5.5VIN 1A 2MHZ ADJ 8DFN 制造商:Linear Technology 功能描述:IC SYNC STEP-UP DC/DC CONVERTER DFN-8 制造商:Linear Technology 功能描述:BOOST, 5.5VIN, 1A, 2MHZ, ADJ, 8DFN 制造商:Linear Technology 功能描述:IC, SYNC STEP-UP DC/DC CONVERTER, DFN-8; Primary Input Voltage:5.5V; No. of Outputs:1; Output Voltage:5.25V; Output Current:1A; No. of Pins:8; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
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