Torex XCL102, XCL103 Series Series Manual

XCL102/XCL103

Series

Inductor Built-in Step-up “micro DC/DC ” Converter (micro DC/DC)

■GENERAL DESCRIPTION

■APPLICATIONS

■FEATURES

Input Voltage Range

: 0.9V～6.0V (Absolute Max. Rating: 7.0V)

Fixed Output Voltage

: 2.2V～5.5V (0.1V increments)

Oscillation Frequency

: 3.0MHz (±20%)

Input Current

: 0.8A

Output Current

: 500mA @V

=5.0V, V

=3.3V (TYP.)

350mA @V

OUT

=3.3V, V

BAT

=1.8V (TYP.)

Control Mode Selection
Load Transient Response

: PWM (XCL102 Series) or
:

→200mA

Protection Circuits

: Over-current limit (Integral latch method)

Output short-circuit protection

Functions

: Soft-start

Load Disconnection Function (D type)

CL Auto Discharge Function (D type)

Bypass Switch Function (E type)

Output Capacitor

: Ceramic Capacitor

Operating Ambient T emperature

: -40℃～+85℃

Package

: CL-2025-02

Environmentally Friendly

: EU RoHS Compliant, Pb Free

■

GreenOperation-Compatible

CHARACTERISTICS

C

L

7

8

1

2

3

4

5

6

Lx

V

OUT

V

BAT

GND

CE

GND

V

OUT

V

BAT

V

CE

C

IN

L1

L2

The XCL102/XCL103 series is a synchronous step-up micro DC/DC converter which integrates an inductor and a control IC
in one t iny package (2.0m m×2.5mm, h=1.0mm). A stable step-up pow er supply is configure d using only two capa citors connected
externally. An inter nal coi l sim plifies the circuit and enables minimization of noise and other operat iona l t rou ble due to the circuit
wiring. A wide operating voltage range of 0.9V to 6.0V enables support for applications that require an internally fixed output
voltage (2.2V to 5.5V). PWM control (XCL102) or automatic PWM/PFM switching control (XC L103) can be selecte d.

During the devices enter stand-by mode, XCL102D/XCL103D types prevent the application malfunction by C
Function which can quickly discharge the electric charge at the output capacitor (CL). XCL102/XCL103E types is able t o drive
Real Time Clock etc.

●Portable equipment

●Beauty & health equipment

●Wearable devices

●Game & Hobby

●PC Peripherals

●Devices with 1~3 Alkaline,

1~3 Nickel Hydride, 1 Lithium and 1 Li-ion

TYPICAL APPLICA TION CIRCUIT

■TYPICAL PERFORMANCE

Auto PWM/PFM (XCL103 Series)

100mV@V

XCL103D503CR-G/XCL103E503CR-G

☆

OUT

OUT

=3.3V,V

ETR28011-002

Discharge

L

BAT

BAT

=1.8V,I

OUT

=1mA

1/20

XCL102/XCL103 Series

VDD MAX

R

FB1

Load 　Disconn ect

Controller

CE Controlle r

Logic

PWM

Comparator

Buffer

Drive

L

X

V

BAT

V

OUT

Current sen se

Short-circuit

pro tection

Latch Ti m er

V re f with

Soft Start

C

FB

Inductor

GND

L2

L1

PFM/PW M

Controller Lo gic

V

DD

CE

V

OUT

C

L

Discharg e

Error Amp.

Phase

Compensa tion

RAMP Wave

Generator

OSC

R

FB2

FB

V

OUT

VDD MAX

R

FB1

Load 　Disconn ect

Controller

CE Controlle r

Logic

PWM

Comparator

Buffer

Drive

L

X

V

BAT

V

OUT

Current sen se

Short-circuit

pro tection

Latch Ti m er

V re f with

Soft Start

C

FB

Inductor

GND

L2

L1

PFM/PWM

Controller Lo gic

V

DD

CE

V

OUT

Bｙpass SW

Error Amp.

Phase

Compensa tion

RAMP Wave

Generator

OSC

R

FB2

FB

V

OUT

■ BLOCK DIAGRAM

2/20

●XCL102D/XCL103D series

* Diodes inside the circuits are ESD protection diodes and parasitic diodes.

* XCL102 series chooses only PWM control.

●XCL102E/XCL103E series

* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
* XCL103 series chooses only PWM control.

XCL102/XCL103

D

E

Output Voltage options

5.0V → ②=5, ③=0

Oscillation Frequency

3

3.0MHz

Short

with latch

D

Fixed

Yes

Fixed

Yes

No

Yes

Yes

Yes

E

Fixed

Yes

Fixed

No

Yes

No

Yes

Yes

1

V

BAT

Power Input

2

GND

Ground

3

CE

Chip Enable

4

GND

Ground

5

Lx

Switching

6

V

Output Voltage

7

L1

8

L2

* If the pad needs to be connected to other pins, it should be connected to the GND.

(*1)

The ”-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant.

7 L1

8 L2

V

OUT

6

Lx 5

GN D 4

1 V

BA T

2 GN D

3 CE

■PRODUCT CLASSIFICATION

●Ordering Information

XCL102①②③④⑤⑥-⑦ PWM control
XCL103①②③④⑤⑥-⑦ PWM/PFM automatic switching control

DESIGNATOR ITEM SYMBOL DESCRIPTION

Series

① Type

②③ Output Voltage 22～55

④

⑤⑥-⑦

●

Selecti on guides

TYPE

(*1)

Package (Order Unit) CR-G CL-2025-02 (3,000pcs/Reel)

Output

Voltage

Chip

Enable

Soft-Start

CL Auto-

Discharge

■PIN CONFIGURATION

■PIN ASSIGNMENT

PIN NUMBER PIN NAME FUNCTIONS

OUT

Inductor Electrodes

Refer to Selection Guide

e.g.)3.3V → ②=3, ③=3

Bypass

Switch

(BOTTOM VIEW)

Load

Disconnection

Current Limit

(with integral latch)

Protection

■FUNCTION CHART

PIN NAME SIGNAL STATUS

* Do not leave the CE pin open.

CE

L Stand-by

H Active

3/20

XCL102/XCL103 Series

V

Pin Voltage

V

-0.3～+7.0

V

CE Pin Voltage

VCE

-0.3～+7.0

V

*GND are standard voltage for all of the voltage.

■ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL RATINGS UNITS

V

Pin Voltage V

BAT

-0.3～+7.0 V

BAT

Lx Pin Voltage VLx -0.3～+7.0 V

OUT

Power Dissipation Pd 1000 (40mm x 40mm Standard board)

OUT

(*3)

mW

Operating Ambient Temperature Topr -40～+85 ℃

Storage Temperature Tstg -55～+125 ℃

(*3)

The power dissipation figure shown is PCB mounted and is for reference only.

The mounting condition is please refer to PACKAGING INFORMATION.

Ta=25℃

4/20

XCL102/XCL103

V

OUT=VOUT(T)

1.03→V

OUT(T)

0.97

Quiescent Current

Supply Current

IDD

V

= V

-0.2V

-

<E-5>

3.0

mA

Oscillation Frequency

f

OSC

V

BAT

= V

OUT(T)

0.5, I

OUT

=100mA

2.4

3.0

3.6

MHz

Minimum Duty Cycle

D

V

= V

+0.5V

- - 0

%

Efficiency

V

= V

0.6, RL is selected with

Efficiency

EFFI

V

= V

0.6, I

= 100mA

-

90

(*3)

- % ① Stand-by Current

I

STB

V

BAT=VLx

=6.0V,VCE=0V,

- 0 1.0

μA

Short Protection

CL Discharge Resistance

Bypass SW

Voltage changes Lx to be generated.

Voltage changes Lx to“H” level

Inductance

L

Test Freq.=1MHz

-

1.5 - μH

■ELECTRICAL CHARACTERISTICS

●XCL102/XCL103 Series

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT

Input Voltage VIN

Output Voltage V

Operation Start Voltage V
Operation Hold Voltage V

OUT

HLD

Voltage to start oscillation while

ST1

RL=1kΩ
RL=1kΩ

×

×

- - 6.0 V

<E-1> <E-2> <E-3> V

- - 0.90 V

- 0.65 - V

Series

Ta=25℃

①

⑤

①
①

(XCL103 only)

Maximum Duty Cycle D

PFM Switching Current

(XCL103 only)

（XCL103 only）

Lx SW "Pch" ON

Resistance

Lx SW "Nch" ON

Resistance

Lx SW”H” Leakage

Current

Current Limit I

Integral Latch Time tLAT

Latch Release Voltage V

Threshold Voltage

Soft-Start Time tSS

Iq V

OUT=VBAT

OUT=VBAT

= V

+0.5V - 26 40 μA

OUT(T)

OUT(T)

×

V

MAX

MIN

I

PFM

EFFI

R

V

LXP

R

LXN

I

V

LXLH

LIM

RL is selected with VOUT(T), Refer to Table 1 0.9 1.2 1.5 V

LAT_R

V

SHORT

=1.2V, V

BAT

OUT=VBAT

V

=1.5V, RL is selected with V

BAT

OUT

OUT(T)

= V

-0.2V 88 93 98 %

OUT(T)

,

OUT(T)

Refer to Table 1

BAT

V

OUT(T)

BAT

BAT=VLx

×

OUT(T)

, Refer to Table 1

×

OUT(T)

= 6.0V, I

OUT

=200mA - 0.3

OUT

(*1)

=6.0,VCE=0V, VLx=6.0V,V

BAT

= V

V

BAT

V

BAT

-0.2V, RLx=1Ω

OUT(T)

= V

-0.2V, RLx=1Ω, Time from

OUT(T)

=0V - 0 1.0 μA

OUT

current limit start to stop Lx oscillation

= V

OUT(T)

-0.2V, RL=1Ω
×0.6, V

OUT=VOUT(T)

× 0.9,

V

BAT=VOUT(T)

V

BAT

After "H" is fed to CE, the time by when

- 165 230 mA

- 86

- 0.3

(*3)

- %

(*2)

- Ω

(*3)

- Ω

<E-6> <E-7> <E-8> A

25 100 365 μs

-

(*3)

- V

0.2 0.5 1.0 ms

clocks are generated at Lx pin.

③

③
①
⑤
⑤

①

①

⑦

④

①

⑦

⑥

⑥

①

①

⑤

(Type D only)

Resistance (Type E only)

CE "H" Voltage V

CE "L" Voltage V
CE "H" Current I

CE "L" Current I

Inductor Rated Current I

V

:Target Voltage

OUT(T)

Test Conditions: unless otherwise stated、V

(*1)

XCL102D/XCL103D: V

(*2)

Design value for the XCL103D

(*3)

Designed value

R

V

DCHG

R

BSW

CEH

CEL

CEH

CEL

CEL

=0V, XCL102E/XCL103E: V

OUT

BAT

V

BAT

V

OUT

V

OUT

V

BAT

V

BAT

ΔT=+40deg - 1000 - mA

=1.5V, VCE=3.3V, Lx:OPEN, RLx=56Ω

BAT

=3.3V, V

= 3.3V, V

= V

= V

=6.0V,V
=6.0V,V

=3.3V, VCE=0V 100 180 400 Ω

OUT

=0V, VCE=0V 100 180 400 Ω

OUT

-0.15V, Applied voltage to VCE,

OUT(T)

-0.15V, Applied voltage to VCE,

OUT(T)

=6.0V, VLx=6.0V VCE=6.0V, -0.1 - 0.1 μA

OUT

=6.0V, VLx=6.0V ,VCE=0V -0.1 - 0.1 μA

OUT

=OPEN

OUT

0.8 - 6.0 V

GND - 0.2 V

②

②

⑤

⑤
②

②

-

-

5/20

XCL102/XCL103 Series

UNITS

V V V

mA A A

A

V

OUT(T)

MIN.

TYP.

MAX.

TYP.

MIN.

TYP.

MAX.

2.2

2.156

2.200

2.244

0.705

-

1.11

2.30

2.3

2.254

2.300

2.346

0.736

-

1.14

2.30

2.4

2.352

2.400

2.448

0.767

-

1.17

2.30

2.5

2.450

2.500

2.550

0.797

-

1.19

2.30

3.8

3.724

3.800

3.876

1.195

1.00

1.30

2.30

3.9

3.822

3.900

3.978

1.225

1.01

1.30

2.30

4.0

3.920

4.000

4.080

1.256

1.01

1.30

2.30

4.1

4.018

4.100

4.182

1.286

1.02

1.30

2.30

4.2

4.116

4.200

4.284

1.317

1.02

1.30

2.30

4.3

4.214

4.300

4.386

1.348

1.03

1.30

2.30

4.4

4.312

4.400

4.488

1.378

1.03

1.30

2.30

4.5

4.410

4.500

4.590

1.409

1.04

1.30

2.30

5.5

5.390

5.500

5.610

1.715

1.09

1.30

2.30

■ELECTRICAL CHARACTERISTICS (Continued)

Table 1. Extern al Components RL Table

V

RL

OUT(T)

UNITS:V

2.2≦V

3.1≦V

4.3≦V

OUT(T)

OUT(T)

OUT(T)

＜3.1
＜4.3

≦5.5

UNITS：Ω

220
330
470

Table 2. SPEC Table

NOMINAL

OUTPUT

VOLTAGE

<E-1> <E-2> <E-3> <E-5> <E-6> <E-7> <E-8>

V

OUT

IDD I

LIM

2.6 2.548 2.600 2.652 0.828 - 1.22 2.30

2.7 2.646 2.700 2.754 0.858 - 1.24 2.30

2.8 2.744 2.800 2.856 0.889 - 1.26 2.30

2.9 2.842 2.900 2.958 0.919 - 1.28 2.30

3.0 2.940 3.000 3.060 0.950 0.96 1.30 2.30

3.1 3.038 3.100 3.162 0.981 0.97 1.30 2.30

3.2 3.136 3.200 3.264 1.011 0.97 1.30 2.30

3.3 3.234 3.300 3.366 1.042 0.98 1.30 2.30

3.4 3.332 3.400 3.468 1.072 0.98 1.30 2.30

3.5 3.430 3.500 3.570 1.103 0.99 1.30 2.30

3.6 3.528 3.600 3.672 1.134 0.99 1.30 2.30

3.7 3.626 3.700 3.774 1.164 1.00 1.30 2.30

4.6 4.508 4.600 4.692 1.439 1.04 1.30 2.30

4.7 4.606 4.700 4.794 1.470 1.05 1.30 2.30

4.8 4.704 4.800 4.896 1.501 1.06 1.30 2.30

4.9 4.802 4.900 4.998 1.531 1.06 1.30 2.30

5.0 4.900 5.000 5.100 1.562 1.07 1.30 2.30

5.1 4.998 5.100 5.202 1.592 1.07 1.30 2.30

5.2 5.096 5.200 5.304 1.623 1.08 1.30 2.30

5.3 5.194 5.300 5.406 1.653 1.08 1.30 2.30

5.4 5.292 5.400 5.508 1.684 1.09 1.30 2.30

6/20