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参数资料
| 型号： | L6928D |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.65 A SWITCHING REGULATOR, 1400 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 3 MM, LEAD FREE, MSOP-8 |
| 文件页数： | 1/16页 |
| 文件大小： | 268K |
| 代理商： | L6928D |
August 2007
Rev 5
1/16
16
L6928
High efficiency monolithic synchronous step down regulator
Features
■ 2V to 5.5V battery input range
■ High efficiency: up to 95%
■ Internal synchronous switch
■ No external schottky required
■ Extremely low quiescent current
■ 1A max shutdown supply current
■ 800mA max output current
■ Adjustable output voltage from 0.6V
■ Low drop-out operation: up to 100% duty cycle
■ Selectable low noise/low consumption mode at
light load
■ Power good signal
■ ±1% output voltage accuracy
■ Current-mode control
■ 1.4MHz switching frequency
■ Externally synchronizable
from 1MHz to 2MHz
■ OVP
■ Short circuit protection
Applications
■ Battery-powered equipments
■ Portable instruments
■ Cellular phones
■ PDAs and hand held terminals
■ DSC
■ GPS
Description
The device is dc-dc monolithic regulator
specifically designed to provide extremely high
efficiency.
L6928 supply voltage can be as low as 2V
allowing its use in single Li-ion cell supplied
applications. Output voltage can be selected by
an external divider down to 0.6V. Duty Cycle can
saturate to 100% allowing low drop-out operation.
The device is based on a 1.4MHz fixed-frequency,
current mode-architecture.
Low Consumption Mode operation can be
selected at light load conditions, allowing
switching losses to be reduced. L6928 is
externally synchronizable with a clock which
makes it useful in noise-sensitive applications.
Other features like Powergood, Overvoltage
protection, Shortcircuit protection and Thermal
Shutdown (150°C) are also present.
MSOP8
VFQFPN8
Figure 1.
Application test circuit
L 4.7
H
SYNC
LX
VFB
C1
10
F
6.3V
C2
220pF
C4
10
F
6.3V
R2
200K
R3
500K
R1
100K
VIN=2V to 5.5V
VOUT=1.8V
VCC
RUN
COMP
GND
PGOOD
D01IN1528
7
6
1
8
3
5
24
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| L6995STR | SWITCHING CONTROLLER, PDSO20 |
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| L6997DTR | SWITCHING CONTROLLER, PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6928D013TR | 功能描述:直流/直流开关调节器 2.0 to 5.5V Step-Dwn RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| L6928Q1 | 功能描述:直流/直流开关调节器 Hi EFFICIENCY MONOLITHIC SYNC RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| L6928Q1TR | 功能描述:直流/直流开关调节器 HIGH EFFICIENCY MONO LITHIC SYNCHRONOUS RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| L6928TQ1TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High efficiency monolithic synchronous step down regulator |
| L6928TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High efficiency monolithic synchronous step down regulator |
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