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参数资料
| 型号： | SP6123ACN-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 8NSOIC |
| 标准包装： | 2,500 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 550kHz |
| 占空比： | 93% |
| 电源电压： | 3 V ~ 5.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
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SP6123/SP6123A
Low Voltage, Synchronous Step-Down PWM Controller
Ideal for 2A to 10A, Small Footprint, DC-DC Power Converters
FEATURES
■ Optimized for Single Supply, 3V - 5.5V Applications
GL 1
8
BST
■ High Efficiency: Greater Than 95% Possible
VCC 2
SP6123
7
GH
■ Accurate Fixed 300kHz (SP6123) or 500kHz
8 Pin nSOIC
(SP6123A) Frequency Operation
■ Fast Transient Response
GND 3
COMP 4
6
5
SWN
VFB
■ Internal Soft Start Circuit
■ Accurate 0.8V Reference Allows Low Output
Voltages
■ Resistor Programmable Output Voltage
■ Loss-less Current Limit with High Side R DS(ON)
Sensing
■ Hiccup Mode Current Limit Protection
■ Dual N-Channel MOSFET Synchronous Driver
■ Quiescent Current: 500 μ A, 30 μ A in Shutdown
■ 8-Pin Surface Mount Package
Now Available in Lead Free Packaging
APPLICATIONS
■ DSP
■ Microprocessor Core
■ I/O & Logic
■ Industrial Control
■ Distributed Power
■ Low Voltage Power
DESCRIPTION
The SP6123 is a fixed frequency, voltage mode, synchronous PWM controller designed to
work from a single 5V or 3.3V input supply, providing excellent AC and DC regulation for high
efficiency power conversion. Requiring only few external components, the SP6123 pack-
aged in an 8-pin NSOIC, is especially suited for low voltage applications where cost, small
size and high efficiency are critical. The operating frequency is internally set to 300kHz
(SP6123) or 500kHz (SP6123A), allowing small inductor values and minimizing PC board
space. The SP6123 drives an all N-channel synchronous power MOSFET stage for improved
efficiency and includes an accurate 0.8V reference for low output voltage applications.
TYPICAL APPLICATION CIRCUIT
3V to 5.5V
IN
MBR0530
V IN
GL
BST
CBST
1 μ F
C IN
680 μ F
0.8V to 5.0V
CB
2.2 μ F
V CC
GND
SP6123A
GH
SWN
FDS6890A
L1
2A to 10A
(1.6V, 4A shown)
V OUT
COMP
V FB
1.5 μ H
R1
10k
CP
56pF
RZ
15k
C OUT1
470 μ F
C OUT2
470 μ F
C OUT3
1 μ F
CC
4.7nF
FDS6890A
STPS2L25U
R2
10k
Date: 9/13/04
SP6123 Low Voltage, Synchronous Step Down PWM Controller
1
? Copyright 2004 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6123AEN-L | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP6123CN | 制造商:Exar Corporation 功能描述:Swithed-Mode Power Supply Controller, Voltage Mode Type, 8 Pin, Plastic, SOP |
| SP6123CN/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Low Voltage, Synchronous Step-Down PWM Controller Ideal for 2A to 10A, Small Footprint, DC-DC Power Converters |
| SP6123CN-L | 功能描述:电压模式 PWM 控制器 Low Voltage, Micro 8 Synchronous, Cntrllr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| SP6123CN-L/TR | 功能描述:电压模式 PWM 控制器 Low Voltage, Micro 8 Synchronous, Cntrllr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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