收藏本站
SC202A
3.5MHz, 500mA Step-down Regulator
With Integrated Inductor
POWER MANAGEMENT
Features
and Digital Programmable Output
Description
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
Input Voltage — 2.9V to 5.5V
Output Voltage — 0.8V to 3.3V
Output current capability — 500mA
Internal inductor
Programmable output voltages — 15
High light-load efficiency via automatic PSAVE mode
Fast transient response
Temperature range — -40 to +85°C
Oscillator frequency — 3.5MHz
100% duty cycle capability
Quiescent current — 38μA typical
Shutdown current — 0.1μA typical
Internal soft-start
Over-voltage protection
Current limit and short circuit protection
Over-temperature protection
Under-voltage lockout
The SC202A is a high efficiency 500mA step-down regula-
tor that includes an integrated inductor inside the
package. The input voltage range makes it ideal for
battery operated applications with space limitations. The
SC202A also includes 15 programmable output voltage
settings that can be selected using the four control pins,
eliminating the need for external feedback resistors. The
output voltage can be fixed to a single setting or dynami-
cally switched between different levels. Pulling all four
control pins low disables the output.
The SC202A operates at a fixed 3.5MHz switching fre-
quency in normal PWM (Pulse-Width Modulation) mode.
A variable frequency PSAVE (power-save) mode is used to
optimize efficiency at light loads for each output setting.
Built-in hysteresis prevents chattering between the two
modes.
? Floating control pin protection
? MLPQ-13 — 2.5 x 3.0 x 1.0 (mm) package
? Lead-free and halogen-free
? WEEE and RoHS compliant
Applications
The SC202A provides several protection features. These
include short circuit protection, over-temperature protec-
tion, under-voltage lockout, and soft-start to control
in-rush current. These features, coupled with the small
2.5 x 3.0 x 1.0 (mm) package, make the SC202A a versatile
?
?
?
?
?
?
?
Point of load regulation
Smart phones and cellular phones
MP3/personal media players
Personal navigation devices
Digital cameras
Single Li-ion cell or 3 NiMH/NiCd cell devices
Devices with 3.3V or 5V internal power rails
device ideal for step-down regulation in products needing
high efficiency and a small PCB footprint.
Typical Application Circuit
V IN
2.9V to 5.5V
C IN
4.7μF
IN
SC202A
SNS
OUT
V OUT
0.8V to 3.3V
Control Logic
Lines
CTL3
CTL2
CTL1
CTL0
GND
LX
NC
C OUT
10μF
Rev. 1.2
? 2011 Semtech Corporation
1
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
SC202MLTRT CONVERTER DC/DC 3.3V OUT 500MA
SC2220-R42 INDUCTOR SMD 0.42UH 4.8A1MHZ
SC2506-6R8 INDUCTOR SMD 6.8UH 1.30A 100KHZ
SC31-680 INDUCTOR SMD 68UH 0.13A 1MHZ
SC312MF-6R8 INDUCTOR SMD 6.8UH 1.10A 100KHZ
SC32-8R2 INDUCTOR SMD 8.2UH 0.77A 7.96MHZ
SC32B-820 INDUCTOR SMD 82UH 0.235A 100KHZ
SC3308F-681 INDUCTOR SMD 680UH 0.2A 100KHZ
相关代理商/技术参数
SC202EVB 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:3.5MHz, 500mA Step-down Regulator with Integrated Inductor
SC202MLTRT 功能描述:CONVERTER DC/DC 3.3V OUT 500MA RoHS:是 类别:电源 - 板载 >> DC DC Converters 系列:SC202 设计资源:Maxi/Mini/Micro Design Guide, Appl Manual 标准包装:1 系列:Maxi 类型:隔离 输出数:1 电压 - 输入（最小）:36V 电压 - 输入（最大）:75V Voltage - Output 1:28V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:500W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:模块 尺寸/尺寸:4.60" L x 2.20" W x 0.62" H（116.8mm x 55.9mm x 15.7mm） 包装:散装 工作温度:-55°C ~ 100°C 效率:* 电源（瓦特）- 最大:*
SC-2030 制造商:Nidec Copal 功能描述:SWIT ROTARY 10 MINUS SLOT PC PINS 0.1A 5VDC - Bulk 制造商:Nidec Copal 功能描述:Switch, rotary, min, PCB, 0-9, comp,pcb
SC-2030B 制造商:Nidec Copal 功能描述:SWIT ROTARY 10 MINUS SLOT GW 0.1A 5VDC - Bulk 制造商:Nidec Copal 功能描述:Switch, rotary, min, PCB, 0-9, comp,sur
SC-2030TB 制造商:Nidec Copal 功能描述:SWIT ROTARY 10 SLOT SHAFT PC PINS 0.1A 5VDC - Tape and Reel
SC-2030W 制造商:Nidec Copal 功能描述:SWIT ROTARY 10 SLOT SHAFT PC PINS 0.1A 5VDC - Trays
SC-2031 制造商:Nidec Copal 功能描述:SWIT ROTARY 10 MINUS SLOT PC PINS 0.1A 5VDC - Bulk 制造商:Nidec Copal 功能描述:Switch, rotary, min, PCB, 0-9, comp,pcb
SC2031-00 制造商:Exar Corporation 功能描述: