Datasheet > SC186ULTRT

SC186ULTRT

更新时间： 2024-10-04 01:11:51

品牌	Logo	应用领域
商升特 - SEMTECH		/
页数	文件大小	规格书
18页	1192K
描述
4A Synchronous Step-Down Regulator

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数据手册
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SC186ULTRT 数据手册

SC186

4A Synchronous

Step-Down Regulator

POWER MANAGEMENT

Features

Description



Input Voltage Range — 2.9 to 5.5V

Output Voltage Range — 0.8V to 3.3V

Output Current — up to 4A

The SC186 is a 4A synchronous step-down regulator

designed to operate with an input voltage range of 2.9V

to 5.5V. The device oﬀers ﬁfteen pre-determined output

voltages via four control pins programmable from 0.8 to

3.3 Volts. The control pins allow for on-the-fly voltage

changes, enabling system designers to implement

dynamic power savings. The device is also capable of

adjusting output voltage via an external resistor divider.

Ultra-Small Footprint — <1mm Height Solution

Switching Frequency — 1.5MHz

Automatic Power Save Mode

Eﬃciency Up to 95%

Low Output Noise Across Load Range

Excellent Transient Response

The SC186 is optimized for maximum eﬃciency over a

wide range of load currents. During full load operation,

the device operates in PWM mode with fixed 1.5MHz

oscillator frequency, allowing the use of small surface

mount external components. As the load decreases, the

regulator will transition into Power Save mode maintain-

ing high eﬃciency.

Start Up into Pre-Bias Output

Duty-Cycle Low Dropout Operation — 100%

Shutdown Current — <1µA

Externally Programmable Soft Start Time

Power Good indicator

Input Under-Voltage Lockout

Connecting the control pins to logic low forces the device

into shutdown mode reducing the supply current to less

than 1μA. Connecting any of the control pins to logic high

enables the converter and sets the output voltage accord-

ing to Table 1. Other features include under-voltage

lockout, programmable soft-start to limit in-rush current,

power good indicator, over-temperature protection, and

output short circuit protection.

Output Over-Voltage, Current Limit Protection

Over-Temperature Protection

Thermally Enhanced 3 x 3 x 0.6 (mm)

MLPQ-UT16 package



Temperature Range — -40 to +85°C

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

Applications

The SC186 is available in a thermally-enhanced, 3 x 3 x 0.6

(mm) MLPQ-UT16 package.



Routers and Network Cards

LCD TV

Oﬃce Automation

Printers

Typical Application Circuit

V_OUT

V_IN

PVIN

AVIN

1.0µH

C_IN

R_AVIN

1Ω

C_OUT

47µF

R_PGOOD

22µF

100kΩ

SC186

VOUT

C_AVIN

0.1µF

C_SS

10nF

PGOOD

CTL0

CTL1

CTL2

CTL3

PGND

AGND

CTL1

CTL2

CTL3

Revision 2.0

12 3 4 5 6 7...18

中文翻译

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SC186ULTRT 替代型号

型号	品牌	替代类型	描述	数据表
SC185BULTRT	SEMTECH	类似代替	4A Synchronous Step-Down Regulator
SC185HULTRT	SEMTECH	功能相似	4A Synchronous Step-Down Regulator

与SC186ULTRT相关器件

型号	品牌	获取价格	描述	数据表
SC187	SEMTECH	获取价格	4A, 2.2MHz Synchronous Step-Down Regulator with 15 Preset Output Voltages
SC187EVB	SEMTECH	获取价格	4A, 2.2MHz Synchronous Step-Down Regulator with 15 Preset Output Voltages
SC187ULTRT	SEMTECH	获取价格	4A, 2.2MHz Synchronous Step-Down Regulator with 15 Preset Output Voltages
SC189	SEMTECH	获取价格	2.5MHz, 1.5A Synchronous Step Down Regulator
SC1894	MAXIM	获取价格	225MHz to 3800MHz RF Power Amplifier Linearizer
SC1894	ADI	获取价格	225MHz至3800MHz RF功率放大器线性化电路(RFPAL)
SC1894A-00B00	MAXIM	获取价格	225MHz to 3800MHz RF Power Amplifier Linearizer
SC1894A-00B13	MAXIM	获取价格	225MHz to 3800MHz RF Power Amplifier Linearizer
SC1894A-00C13	MAXIM	获取价格	225MHz to 3800MHz RF Power Amplifier Linearizer
SC1894A-00M13	MAXIM	获取价格	225MHz to 3800MHz RF Power Amplifier Linearizer

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