- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374727 > SC412AEVB (Semtech Corporation) Synchronous Buck Controller PDF資料下載
參數(shù)資料
| 型號： | SC412AEVB |
| 廠商： | Semtech Corporation |
| 英文描述： | Synchronous Buck Controller |
| 中文描述： | 同步降壓控制器 |
| 文件頁數(shù)： | 1/22頁 |
| 文件大小： | 639K |
| 代理商： | SC412AEVB |
www.semtech.com
1
SC412A
POWER MANAGEMENT
Description
Synchronous Buck Controller
The SC412A is a versatile, constant on-time synchronous
buck, pseudo
fi
xed-frequency, PWM controller intended
for notebook computers and other battery operated
portable devices. The SC412A contains all the features
needed to provide cost-effective control of switch-mode
power outputs.
The output voltage is programmable from 0.75 to 5.25
volts using external resistors. Switching frequency is
internally preset to 325kHz. Additional features cycle-
by-cycle current limit, voltage soft-start, under-voltage
protection, programmable over-current protection, soft
shutdown, automatic power save and non-overlapping
gate drive. The SC412A also provides an enable input
and a power good output.
The constant on-time topology provides fast, dynamic
response. The excellent transient response means that
SC412A based solutions require less output capacitance
than competing
fi
xed-frequency converters. Switching
frequency is constant until a step in load or line voltage
occurs, at which time the pulse density and frequency
will increase or decrease to counter the change in
output voltage. After the transient event, the controller
frequency returns to steady state operation. At light loads,
the automatic power save mode reduces the switching
frequency for improved ef
fi
ciency.
September 19, 2006
V
BAT
Range 3V to 25V
Soft-Shutoff at Output
Current Sense Using Low-Side R
DS(ON)
or Resistor
Sensing with Adjustable Cycle-by-Cycle Current Limit
Fixed-Frequency 325kHz
Constant On-Time for Fast Dynamic Response and
Reduced Output Capacitance
Automatic Smart Power Save
Internal Soft-Start
Over-Voltage/Under-Voltage Fault Protection
Power Good Output
1
μ
A Typical Shutdown Current
Tiny 3x3mm, 16 Pin MLP, Lead-free Package
Low External Part Count
Industrial Temperature Range
1% Internal Reference
1A/3A Non-Overlapping Gate Drive with SmartDrive
High Ef
fi
ciency > 90%
Fully WEEE and RoHS Compliant
Patent pending
Notebook and Sub-Notebook Voltage Controllers
Tablet PCs
Embedded Applications
Typical Application Circuit
Applications
Features
RLIM
C2
D1
COUT
Q1
CIN
L1
Q2
C1
VOUT
VOUT
PGOOD
VCC
VBAT
EN
VCC
R1
LX
1
BST
2
VCC
3
DL
4
G
5
R
6
N
7
N
8
FB
9
VOUT
10
PGOOD
11
EN
12
I
1
N
1
N
1
D
1
P
1
U1
SC412A
VCC
FB
R2
R3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC412AMLTRT | Synchronous Buck Controller |
| SC4150 | Negative Voltage Hot Swap Controller |
| SC4150HIS-4TRT | Negative Voltage Hot Swap Controller |
| SC4150HISTRT | Negative Voltage Hot Swap Controller |
| SC4150LIS-4TRT | Negative Voltage Hot Swap Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC412AMLTRT | 功能描述:IC REG CTRLR BUCK PWM 16-MLP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| SC41342 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Encoder and Decoder Pairs CMOS |
| SC41342D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Encoder and Decoder Pairs CMOS |
| SC41342P | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Encoder and Decoder Pairs CMOS |
| SC41343 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Encoder and Decoder Pairs CMOS |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。