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| 型号： | MCP1601T-I/MS |
| 厂商： | Microchip Technology |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.5A 8MSOP |
| 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： | 0.9 V ~ 5.5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 750kHz |
| 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-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-MSOP |
| 配用： | MCP1601EV-ND - BOARD EVALUATION FOR MCP1601 |
M MCP1601
500 mA Synchronous BUCK Regulator
Features
Description
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Input Range of 2.7V to 5.5V
3 Operating Modes: PWM, PFM and LDO
Integrated BUCK and Synchronous Switches
Ceramic or Electrolytic Input/Output Filtering
Capacitors
750 kHz Fixed Switching Frequency
Oscillator Synchronization to 1 MHz PWM Mode
Auto-Switching from PWM/PFM Operation
100% Duty Cycle Capable for Low Input Voltage
500 mA Continuous Output Current Capability
Integrated Under-Voltage Lock-Out Protection
Integrated Over-Temperature Protection
Integrated Soft Start Circuitry
Low Output Voltage Capability to 0.9V
Temperature Range: -40°C to +85oC
Small 8-Pin MSOP Package
The MCP1601 is a fully integrated synchronous BUCK
(step down) DC/DC converter for battery powered sys-
tems. With an input operating range of 2.7V to 5.5V, the
MCP1601 is ideal for applications being powered by
one single cell Li-Ion, 2 to 3 cell NiMH, NiCd or alkaline
sources. Output voltages can range from 0.9V to V IN to
accommodate a wide range of applications. Efficiency
can exceed 92% while operating at 750 kHz with load
current capability up to 500 mA. The MCP1601 is used
to minimize space, cost and wasted energy.
The PWM mode switching frequency is internally set to
a fixed 750 kHz allowing the use of low profile, surface
mount inductors and ceramic capacitors while
maintaining a typical efficiency of 92%.
The MCP1601 is capable of three distinct operating
modes: PWM, PFM and Low Drop Out.
When operating in PWM (pulse width modulation)
mode, the DC/DC converter switches at a single high
Applications
frequency determined by either the internal 750 kHz
oscillator or external synchronization frequency.
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Low Power Handheld CPUs and DSPs
Cellular Phones
Organizers and PDAs
Digital Cameras
+5V or +3.3V Distributed Voltages
USB Powered Devices
For applications that operate at very light to no load for
extended periods of time, the MCP1601 is capable of
operating in PFM (pulse frequency modulation mode)
to reduce the number of switching cycles/sec and
consume less energy.
The third mode of operation (LDO mode) occurs when
the input voltage approaches the output voltage and the
Package Type
8-Pin MSOP
BUCK duty cycle approaches 100%. The MCP1601 will
enter a low drop out mode and the high-side P-Channel
BUCK switch will saturate, providing the output with the
maximum voltage possible.
V IN
1
8
L X
The MCP1601 has integrated over-current protection,
SHDN
FB
A GND
2
3
4
MCP1601
7
6
5
P GND
V OUT
SYNC/PWM
over-temperature protection and UVLO (Under Voltage
Lockout) to provide for a fail safe solution with no
external components.
The MCP1601 is available in the 8-pin MSOP package,
with an operating temperature range of -40°C to +85°C.
? 2003 Microchip Technology Inc.
DS21762A-page 1
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| MCP1602 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2.0 MHz, 500 mA Synchronous Buck Regulator with Power-Good |
| MCP1602-080I/MF | 功能描述:开关变换器、稳压器与控制器 20MHz 05A Synch-Buck PFM/PWM Reg RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MCP1602-080I/MS | 功能描述:开关变换器、稳压器与控制器 20MHz 05A Synch-Buck PFM/PWM Reg RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MCP1602-120I/MF | 功能描述:开关变换器、稳压器与控制器 20MHz 05A Synch-Buck PFM/PWM Reg RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MCP1602-120I/MS | 功能描述:开关变换器、稳压器与控制器 20MHz 05A Synch-Buck PFM/PWM Reg RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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