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XC9128/XC9129

Series

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PRODUCT CLASSIFICATION

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Ordering Information

DESIGNATOR

DESCRIPTION

SYMBOL

DESCRIPTION

B

With integral protection

①

Transistor Built-In,

Output Voltage Freely Set (FB voltage),

Integral Protection Type

D

Without integral protection

Fixed reference voltage 0.45Ｖ

②③

Reference Voltage

45

②

=4, ③=5

④

Oscillation Frequency

C

1.2MHz

AR

MSOP-10

AR-G

MSOP-10 (Halogen & Antimony free)

DR

USP-10B

DR-G

USP-10B (Halogen & Antimony free)

⑤⑥

-⑦

Packages

Taping Type

(*2)

SR

SOP-8 (under development)

XC9128①②③④⑤⑥-⑦

XC9129①②③④⑤⑥-⑦

SOP-8 (Under Development)

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FUNCTION CHART

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XC9128 Series

EN PIN

AEN/ PIN

FB PIN VOLTAGE

IC OPERATIONAL STATE

SOFT-START FUNCTION

L→H

L

-

Operation

Available

H

H→L

Lower than 0.45×0.8V

Operation

Available

H

H→L

Higher than 0.45×0.95V

Operation

Not Available

H

H

-

Step-Up Operation

Shut-Down

-

L

L

-

Disable

-

L

H

-

Disable

-

* Do not leave the EN and AEN/ Pins open.

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XC9129 Series

EN PIN

IC OPERATIONAL STATE

H

Operation

L

Disable

* Do not leave the EN Pin open.

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XC9128/XC9129 Series

MODE PIN

FUNCTION

H

PWM Control

L

PWM/PFM Automatic Switching Control

1. EN, AEN/ Pin Function

2. MODE Pin Function

representative. (Standard orientation: ⑤R-⑦, Reverse orientation: ⑤L-⑦)