Datasheet > SC197ULTRT

SC197ULTRT

更新时间： 2024-11-05 09:33:43

品牌	Logo	应用领域
商升特 - SEMTECH		稳压器
页数	文件大小	规格书
20页	975K
描述
3.5MHz, 500mA Synchronous Dual Step-Down DC-DC Regulator

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SC197ULTRT 技术参数

是否Rohs认证：	符合	生命周期：	Active
零件包装代码：	QFN	包装说明：	HVQCCN, LCC18,.08X.12,16
针数：	18	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	1.74	其他特性：	ADJUSTABLE OUTPUT FROM 0.8V TO 3.3V
模拟集成电路 - 其他类型：	DUAL SWITCHING CONTROLLER	控制模式：	VOLTAGE-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	5.5 V
最小输入电压：	2.9 V	标称输入电压：	3.6 V
JESD-30 代码：	R-XQCC-N18	长度：	3 mm
功能数量：	1	端子数量：	18
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	1.3 A	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装等效代码：	LCC18,.08X.12,16
封装形状：	RECTANGULAR	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	0.6 mm	子类别：	Switching Regulator or Controllers
表面贴装：	YES	切换器配置：	PHASE-SHIFT
最大切换频率：	4200 kHz	温度等级：	INDUSTRIAL
端子形式：	NO LEAD	端子节距：	0.4 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	2 mm	Base Number Matches：	1

SC197ULTRT 数据手册

SC197

3.5MHz, 500mA Synchronous

Dual Step-Down DC-DC Regulator

POWER MANAGEMENT

Features

Description



Input Voltage — 2.9V to 5.5V

Output Voltage — 0.8V to 3.3V

The SC197 contains two identical high eﬃciency 500mA

step-down regulators designed for use in battery-

powered applications. Each regulator 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 dynamically switched between

diﬀerent levels. Pulling all four control pins low disables

the output.

Output current capability — 500mA per regulator

Eﬃciency up to 94%

Programmable output voltages — 15

High light-load eﬃciency via automatic PSAVE mode

Fast transient response

Oscillator frequency — 3.5MHz

100% duty cycle capability

Quiescent current — 38µA typical per regulator

Shutdown current — 0.1µA typical per regulator

Internal soft-start

Over-voltage protection

Current limit and short circuit protection

Over-temperature protection

Under-voltage lockout

Floating control pin protection

The SC197 operates at a ﬁxed 3.5MHz switching frequency

in normal PWM (Pulse-Width Modulation) mode. A vari-

able 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.

The SC197 provides several protection features to safe-

guard the device under stressed conditions. These include

short circuit protection, over-temperature protection,

under-voltage lockout, and soft-start to control in-rush

current. These features, coupled with the small 2.0 x 3.0 x

0.6 (mm) package make the SC197 a versatile device ideal

for step-down regulation in products needing high eﬃ-

ciency and a small PCB footprint.

MLPQ-UT18 2.0 x 3.0 x 0.6 (mm) package

Lead-free, halogen-free, and RoHS/WEEE compliant

Applications



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

Typical Application Circuit

L_XA

SC197

1.0µH

V_IN

V_OUTA

0.8V to 3.3V

INA

LXA

2.9V to 5.5V

C_INA

4.7µF

OUTA

C_OUTA

10µF

CTL3A

CTL2A

CTL1A

CTL0A

Control Logic

For Output A

GNDA

L_XB

1.0µH

V_IN

V_OUTB

0.8V to 3.3V

INB

LXB

2.9V to 5.5V

C_INB

4.7µF

OUTB

C_OUTB

10µF

CTL3B

CTL2B

CTL1B

CTL0B

Control Logic

For Output B

GNDB

January 17, 2011

12 3 4 5 6 7...20

中文翻译

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与SC197ULTRT相关器件

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SC198	SEMTECH	获取价格	Dual DC-DC Buck Converter with High Current Capability
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SC198AEVB	SEMTECH	获取价格	Dual DC-DC Buck Converter with High Current Capability
SC198AMLTRT	SEMTECH	获取价格	Dual DC-DC Buck Converter with High Current Capability
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SC198MLTRT	SEMTECH	获取价格	Dual DC-DC Buck Converter with High Current Capability
SC1A	ETC	获取价格	formerscontrol products
SC1A100KC	DBLECTRO	获取价格	CHIP TYPE, LOW LEAKAGE CURRENT
SC1A100KR	DBLECTRO	获取价格	CHIP TYPE, LOW LEAKAGE CURRENT

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