Preliminary

Pin Configuration

Pin Assignment

Ordering Information

XC9107 Series: PWM/PFM automatic switching control

XC9106 Series: PWM Control

(Ordering information is the same as XC9106 Series)

Reference Voltage (apply external)

Fixed : 00

Oscillation Frequency: 300kHz

100kHz

Package:

SOT-25 (1 reel = 3000 pcs.)

USP-6B (1 reel = 3000 pcs.)

Embossed Tape:

Standard Feed

Reverse Feed

Block Diagram

Absolute Maximum Ratings

2

FUNCTION

Ground

GND

FB

mW

O

C

Storage Temperature

RATINGS

UNITS

V

V

-0.3 ~ 12.0

-0.3 ~ 12.0

SOT-25

USP-6B

-0.3 ~ 12.0

V

Tstg

O

C

-55 ~ +125

FB

mA

Topr

±100

150

100

-40 ~ +85

V

Pd

SYMBOL

R

L

5

M

1

4

D

Supply Voltage

NC

No Connection

3

5

PIN

NAME

XC9107D

12345

Output Resistor Connection

External Transistor Connection

EXT

2

6

2

SOT-25

USP-6B

XC9106 / 07 Series

PWM Control, PWM/PFM Switching Control,

Step-up DC/DC Converters

XC9106D

12345

-5

34

4

12

EXT pin Current

Power Dissipation

Externally Applied Reference Voltage (Vref)

Serves as both Chip Enable pin and

Reference Voltage Apply pin.

CE/

Vref

3

3

1

PIN NUMBER

1

Operating Ambient Temperature

PARAMETER

FB pin Voltage

CE / Vref pin Voltage

EXT pin Voltage

SOT-25

(TOP VIEW )

12

3

4

5

6

5

4

1

2

3

USP-6B

(TOP VIEW)

Ramp Wave

Generator,

OSC

Current

Ripple Detect

and FB

PWM/PFM

Controller

Phase

Compensation

Vref with

Soft Start,

CE

Buffer,

Driver

Error Amp.

PWM

Comparator

FB

VDD

EXT

GND

CE / Vref

FB, CE : CMOS INPUT

EXT

: CMOS OUTPUT