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參數(shù)資料
| 型號(hào)： | SP6123ACN |
| 英文描述： | CAP .033UF 100V PPS FILM ECH-S |
| 中文描述： | 低，同步降壓電壓降壓PWM控制器，適合2A至10A條，占地面積小，DC - DC電源轉(zhuǎn)換器 |
| 文件頁數(shù)： | 3/18頁 |
| 文件大?。?/td> | 154K |
| 代理商： | SP6123ACN |
3
Date: 5/25/04
SP6123 Low Voltage, Synchronous Step Down PWM Controller Copyright 2004 Sipex Corporation
PIN DESCRIPTION
PIN N0. PIN NAME DESCRIPTION
1
GL
High current driver output for the low side MOSFET switch. It is always low if GH is high.
GL swings from GND to V
CC
.
2
V
CC
Positive input supply for the control circuitry and the low side gate driver. Properly bypass
this pin to GND with a low ESL/ESR ceramic capacitor.
3
GND
Ground pin. Both power and control circuitry of the IC is referenced to this pin.
4
COMP
Output of the Error Amplifier. It is internally connected to the non-inverting input of the
PWM comparator. A lead-lag network is typically connected to the COMP pinto compen-
sate the feedback loop in order to optimize the dynamic performance of the voltage mode
control loop. Sleep mode can be invoked by pulling the COMP pin below 0.3V with an
external open-drain or open-collector transistor. Supply current is reduced to 30
μ
A (typical)
in shutdown. An internal 5
μ
A pull-up ensures start-up.
5
V
FB
Feedback Voltage Pin. It is the inverting input of the Error Amplifier and serves as the
output voltage feedback point for the Buck converter. The output voltage is sensed and
can be adjusted through an external resistor divider.
6
SWN
Lower supply rail for the GH high-side gate driver. It also connects to the Current Limit
comparator. Connect this pin to the switching node at the junction between the two
external power MOSFET transistors. This pin monitors the voltage drop across the R
DS(ON)
of the high side N-channel MOSFET while it is conducting. When this drop exceeds the
internal 200mV threshold, the overcurrent comparator sets the fault latch and terminates
the output pulses. The controller stops switching and goes through a hiccup sequence. This
prevents excessive power dissipation in the external power MOSFETS during an overload
condition. An internal delay circuit prevents that very short and mild overload conditions,
that could occur during a load transient, from activating the current limit circuit.
7
GH
High current driver output for the high side MOSFET switch. It is always low if GL is high or
during a fault. GH swings from SWN to BST.
8
BST
High side driver supply pin. Connect BST to the external boost diode and capacitor as
shown in the application schematic of page #1. Voltage between BST and SWN should
not exceed 5.5V.
Unless otherwise specified: 0
°
C < T
< 70
°
C, 3.0V < V
CC
< 5.5V, C
COMP
= 22nF, CGH = CGL = 3.3nF, V
FB
= 0.8V,
SWN = GND=0V, typical value for design guideline only.
PARAMETER
GATE DRIVERS
GH Rise Time
GH Fall Time
GL Rise Time
GL Fall Time
GH to GL Non-Overlap Time
GL to GH Non-Overlap Time
MIN TYP
MAX
UNITS
CONDITIONS
110
110
110
110
ns
ns
ns
ns
ns
ns
V
CC
> 4.5V
V
CC
> 4.5V
V
CC
> 4.5V
V
CC
> 4.5V
V
CC
> 4.5V
V
CC
> 4.5V
100
100
ELECTRICAL CHARACTERISTICS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6123ACN/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Low Voltage, Synchronous Step-Down PWM Controller Ideal for 2A to 10A, Small Footprint, DC-DC Power Converters |
| SP6123ACN-L | 功能描述:電壓模式 PWM 控制器 Low Voltage, Micro 8 Synchronous, Cntrllr RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| SP6123ACN-L/TR | 功能描述:電壓模式 PWM 控制器 Low Voltage, Micro 8 Synchronous, Cntrllr RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| 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 |
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