CRS02 Просмотр технического описания (PDF) - Seiko Instruments Inc

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CRS02

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

Seiko Instruments Inc 

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

S-8363 Series

Rev.2.0_01

 Block Diagram

ON/OFF

VIN

VIN CIN

L = 2.2 μH

SD

VIN

ON/OFF

Circuit

Start-up

Circuit

CONT

Oscillation

Circuit

VOUT

SLOPE

Compensation

Internal

Power Supply

Current

Limit Circuit

MUX

Switching

Control

Circuit

Σ

STU Mode

Circuit VOUT CFB

Error Amplifier

FB

−

+

+

−

PWM

Reference

Comparator Voltage

Source

VSS

VOUT

RFB1

COUT

10 μF

RFB2

Figure 1

2

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