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參數(shù)資料
| 型號： | SC196EVB |
| 廠商： | Semtech Corporation |
| 英文描述： | 1.5A Synchronous Buck Converter with Integrated Power Devices |
| 中文描述： | 1.5A的同步降壓轉(zhuǎn)換器，集成了功率器件 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大小： | 665K |
| 代理商： | SC196EVB |
February 8, 2007
The SC196 is a synchronous step-down converter with
integrated power devices designed for use in applications
using a single-cell Li-ion battery. Its wide input voltage
range also makes it suitable for use in systems with
fi
xed
3.3V or 5V supply rails available. The switching frequency is
nominally set to 1MHz, allowing the use of small inductors
and capacitors. The current rating of the internal MOSFET
switches allows a DC output current of 1.5A.
The output voltage is set by connecting a resistor divider
from the
fi
lter inductor to the feedback pin. See the
SC196A for pin-programmable output voltages.
The SC196 has a
fl
exible clocking methodology that
allows it to be synchronized to an external oscillator or
controlled by the internal oscillator. The device operates
in either forced PWM mode or in PSAVE mode. If PSAVE
mode is enabled, the part will automatically enter PFM at
light loads to maintain maximum ef
fi
ciency across the full
load range.
For noise sensitive applications, PSAVE mode can be
disabled by synchronizing to an external oscillator or
pulling the SYNC/PWM pin high. Shutdown turns off all
the control circuitry to achieve a typical shutdown current
of 0.1
μ
A.
Cell phones
Wireless communication chipset power
Personal media players
Microprocessor/DSP core/IO power
PDAs and handheld computers
WLAN peripherals
USB powered modems
1 Li-Ion or 3 NiMH/NiCd powered devices
Up to 95% ef
fi
ciency
V
adjustable from less than 0.8V to V
IN
Output current — 1.5A
Input range — 2.5V to 5.5V
Quiescent current — 17
μ
A
Fixed 1MHz frequency or 750kHz to 1.25MHz
synchronized operation
PSAVE operation to maximize ef
fi
ciency at light loads
Shutdown current <1
μ
A
Fast transient response
100% duty cycle in dropout
Soft-start
Over-temperature and short-circuit protection
Lead-free package — MLPD10-UT, 3 x 3 x 0.6 mm
C
OUT
22
μ
F
L1
4.7
μ
H
V
IN
2.5V to 5.5V
V
OUT
<0.8V to V
IN
1.5A
C
IN
10
μ
F
VIN
EN
SYNC/PWM
PGND
GND
MODE
ADJ
SC196
LX
R
FB1
R
FB2
VOUT
PVIN
C
FB1
10pF
1
www.semtech.com
SC196
1.5A Synchronous Buck Converter
with Integrated Power Devices
POWER MANAGEMENT
Description
Features
Applications
Typical Application Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC196ULTRT | 1.5A Synchronous Buck Converter with Integrated Power Devices |
| SC198A | Dual DC-DC Buck Converter with High Current Capability |
| SC198AEVB | Dual DC-DC Buck Converter with High Current Capability |
| SC198AMLTRT | Dual DC-DC Buck Converter with High Current Capability |
| SC198 | Dual DC-DC Buck Converter with High Current Capability |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC196UL.TRT | 制造商:SEMTECH 功能描述:I.C. |
| SC196ULTRT | 功能描述:IC REG BUCK SYNC ADJ 1.5A 10MLPD RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| SC197 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:3.5MHz, 500mA Synchronous Dual Step-Down DC-DC Regulator |
| SC1972 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:NPN EPITAXIAL PLANAR TYPE(for RF power amplifiers on VHF band Mobile radio applications) |
| SC197EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:3.5MHz, 500mA Synchronous Dual Step-Down DC-DC Regulator |
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