CS2 datasheet(3/56 Pages) FUJITSU

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MB39A214A

Limitation : development tool vendor use only

FUJITSU SEMICONDUCTOR CONFIDENTIAL

DS405-00007-1v0-E

PIN DESCRIPTIONS

Pin No.

Pin Name

I/O

Description

BST1

—

CH1 boost capacitor connection pin.

EN1

CH1 enable pin.

VOUT1

CH1 input pin for DC/DC output voltage.

FB1

CH1 input pin for feedback voltage.

CS1

CH1 soft-start time setting capacitor connection pin.

GND

—

Ground pin.

FREQ

Frequency switching signal input pin.

FREQ : GND Short

Switching frequency

310 kHz

FREQ : Open

Switching frequency

620 kHz

FREQ : VB Short

Switching frequency

1 MHz

CS2

CH2 soft-start time setting capacitor connection pin.

FB2

CH2 input pin for feedback voltage.

VOUT2

CH2 input pin for DC/DC output voltage.

EN2

CH2 enable pin.

BST2

—

CH2 boost capacitor connection pin.

DRVH2

CH2 output pin for external high-side FET gate drive.

LX2

—

CH2 inductor and external high-side FET source connection pin.

DRVL2

—

CH2 output pin for external low-side FET gate drive.

ILIM2

CH2 over current detection level setting voltage input pin.

MODE

DC/DC control mode switching signal input pin.

MODE : GND Short

PFM/PWM

MODE : Open

PFM/PWM, PAF

MODE : VB Short

PWM fixed

Internal circuit bias output pin.

VCC

Power input pin for control and output circuits.

ILIM1

CH1 over current detection level setting voltage input pin.

PGND

—

Ground pin for output circuit.

DRVL1

CH1 output pin for external low-side FET gate drive.

LX1

—

CH1 inductor and external high-side FET source connection pin.

DRVH1

CH1 output pin for external high-side FET gate drive.

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