Datasheet > SC187EVB

SC187EVB

更新时间： 2024-10-03 12:23:51

品牌	Logo	应用领域
商升特 - SEMTECH		稳压器
页数	文件大小	规格书
17页	1145K
描述
4A, 2.2MHz Synchronous Step-Down Regulator with 15 Preset Output Voltages

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SC187EVB 数据手册

SC187

4A, 2.2MHz Synchronous Step-Down Regulator

with 15 Preset Output Voltages

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 SC187 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

Minimum 1.8MHz Switching Frequency with no AM

Radio Band Interference

Eﬃciency Up to 95%



Low Output Noise Across Load Range

Excellent Transient Response

The SC187 operates in PWM mode with fixed 2.2MHz

oscillator frequency, allowing the use of small surface

mount external components.

Start Up into Pre-Bias Output

Duty-Cycle Low Dropout Operation — 100%

Shutdown Current — <1µA

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.

Externally Programmable Soft Start Time

Power Good indicator

Input Under-Voltage Lockout

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

The SC187 is available in a thermally-enhanced, 3 x 3 x 0.6

(mm) MLPQ-UT16 package.

Applications



Automotive Power Supplies

Routers and Network Cards

LCD TV

Oﬃce Automation

Typical Application Circuit

V_OUT

V_IN

PVIN

AVIN

1.0µH

C_IN

22µF

R_AVIN

1Ω

C_OUT

47µF

R_PGOOD

100kΩ

SC187

VOUT

C_AVIN

10nF

C_SS

10nF

PGOOD

CTL0

CTL1

CTL2

CTL3

PGND

AGND

CTL1

CTL2

CTL3

Rev 2.0

12 3 4 5 6 7...17

中文翻译

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与SC187EVB相关器件

型号	品牌	获取价格	描述	数据表
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
SC1894A-00N13	MAXIM	获取价格	225MHz to 3800MHz RF Power Amplifier Linearizer
SC1894-EVK1500	MAXIM	获取价格	225MHz to 3800MHz RF Power Amplifier Linearizer

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