MLP2012S datasheet(21/50 Pages) SII

21 / 50 page

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR

Rev.2.0_01

S-8363 Series



Standard Circuit

Error Amplifier

CIN

VIN

VOUT

CONT

VSS

VIN

ON/OFF

Internal

Power Supply

ON/OFF

Circuit

Switching

Control

Circuit

Reference

Voltage

Source

PWM

Comparator

VIN

VOUT

−

Current

Limit Circuit

Oscillation

Circuit

SLOPE

Compensation

STU Mode

Circuit

MUX

−

Start-up

Circuit

L = 2.2

μH

COUT

μF

Ground point

CFB

COUT

0.1

μF

RFB1

RFB2

Figure 18

Caution The above connection diagram and constant will not guarantee successful operation. Perform

thorough evaluation using an actual application to set the constants.



Precaution

• Mount external capacitors and inductor as close as possible to the IC. Set single point ground.

• Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover rush current

flows at the time of a power supply injection. Because these largely depend on the inductor, the capacitor and

impedance of power supply used, perform sufficient evaluation with actual application.

• The 0.1 μF capacitor connected between the VOUT and VSS pins is a bypass capacitor. It stabilizes the power

supply in the IC when application is used with a heavy load, and thus effectively works for stable switching

regulator operation. Allocate the bypass capacitor as close to the IC as possible, prioritized over other parts.

• Although the IC contains a static electricity protection circuit, static electricity or voltage that exceeds the limit of

the protection circuit should not be applied.

• The power dissipation of the IC greatly varies depending on the size and material of the board to be connected.

Perform sufficient evaluation using an actual application before designing.

• SII Semiconductor Corporation claims no responsibility for any disputes arising out of or in connection with any

infringement by products including this IC of patents owned by a third party.

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