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參數(shù)資料
| 型號： | SC4624 |
| 廠商： | Semtech Corporation |
| 英文描述： | Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator |
| 中文描述： | 低輸入電壓，高效率及4A集成FET的同步降壓直流/直流穩(wěn)壓器 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 738K |
| 代理商： | SC4624 |
9
2007 Semtech Corp.
www.semtech.com
SC4624
POWER MANAGEMENT
Pin Descriptions
Pin
SO-16
Pin
MLPQ-20
Pin Name
Pin Functions
6
1
PVIN1
Power supply voltage for high side MOSFETs.
8
2
ISET
Current limit setting pin. A resistor connected between ISET and AGND sets the over
current protection threshold. A ceramic decoupling between ISET pin to AGND have to
be reserved to prevent from noise influence.
Soft start time setting pin. A cap connected from this pin to GND sets the soft start up
time.
Oscillator frequency setting pin. An external resistor connected from this pin to GND
sets the oscillator frequency.
9
3
SS
10
4
FS
11,15
5,12
VCC
Power supply voltage for the analog section of the controller.
12
6
PGOOD
Power good indicator. It is an open drain output. Low when the output is below the
power good threshold level.
7,8,9
NC
No connection.
13
10
COMP
This is the output of the error amplifier. The voltage at this point is connected to the
inverting input of the PWM comparator. A compensation network is required in order to
optimize the dynamic performance of the voltage mode control loop.
The inverting input of the error amplifier. It serves as the output voltage feedback point
for the buck controller. It senses the output voltage through an external divider.
14
11
FB
16
13
AGND
Analog signal gound.
1
14
SYNC/EN
The oscillator frequency of the SC4624 is set by FS when SYNC/EN is pulled and
held above 2V. Its synchronous mode is activated as SYNC/EN is driven by an exter
-
nal clock. Its shutdown mode is invoked if SYNC/EN is pulled and held below 0.8V.
2
15
PGND1
Power ground.
3
16
PGND2
Power ground.
4
17
PH1
Switching nodes
5
18
PH2
Switching nodes
19
PH3
Switching nodes
7
20
PVIN2
Power supply voltage for high side MOSFETs.
THERMAL
PAD
Pad for heatsinking purposes only. Connect to ground plane using multiple vias. Not
electrically connected internally.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SC4624_08 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator |
| SC4624A | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator |
| SC4624AEVB-MLPQ | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator |
| SC4624AMLTRT | 功能描述:IC REG BUCK ADJ 4A 20MLPQ RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:50 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:5 V ~ 25 V 輸入電壓:2.3 V ~ 5.5 V PWM 型:電流模式 頻率 - 開關:600kHz，1.2MHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 包裝:管件 供應商設備封裝:8-MSOP |
| SC4624EVB-MLPQ | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator |
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