XC6365A155ML [TOREX]

PWM Controllde, PWM/PFM Switchable Step-Down DC/DC Converers; PWM Controllde ， PWM / PFM切换降压型DC / DC Converers


型号：	XC6365A155ML
厂家：	Torex Semiconductor
描述：	PWM Controllde, PWM/PFM Switchable Step-Down DC/DC Converers PWM Controllde ， PWM / PFM切换降压型DC / DC Converers
文件：	总21页 (文件大小：1663K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

☆GO-Compatible

■APPLICATIONS

◆Input Voltage Range : 2.2~10.0V

◆Output Voltage Range : 1.5~6.0V (±2.5%)

◆Oscillator Frequency : 300kHz (±15%)

◆Maximum Duty Ratio : 100%

●Electronic information organizers

●Palmtops

●Cellular and portable phones

●Portable audio systems

◆High Efficiency

: 92%

●Various multi-function power supplies

◆PWM/PFM Switching Control (XC6366)

◆SOT-25 Package

■GENERAL DESCRIPTION

■FEATURES

The XC6365/66 series are multi-functional step-down DC/DC

converters with built-in high speed, low ON resistance drivers.

An output current of more than 1A is possible using an

externally connected transistor, coil, diode and capacitor.

Output voltage is programmable in 100mV increments between

1.5V to 6.0V (VOUT) (±2.5% accuracy). Further, with 1.0V of

standard voltage supply internal and using externally

connected components, output voltage can be set up freely

(FB). With a 300kHz switching frequency, the size of the

external components can be reduced.

Input Voltage Range : 2.2V ~ 10V (VOUT type)

Output Voltage Range : 1.5V ~ 6.0V programmable in

100mV increments (±2.5%)

Oscillation Frequency : 300kHz (±15%)

: Custom products for 180, 500kHz

Output Current

: More than 1.0A

(VIN=5.0V, VOUT=3.0V)

: 92% (TYP.)

High Efficiency

Stand-by Capability : ISTB=0.5μA (MAX.)

Control switches from PWM to PFM during light loads with the

XC6366 (PWM/PFM switchable) and the series is highly

efficient from light loads to large output currents.

In relation to soft-start time, both internally set-up 10msec

types (A, B) and external resistor or capacitor regulated types

(C, D) are available.

Soft-start time set-up externally type possible

Internally set-up output voltage type possible (VOUT)

Externally set-up output voltage type possible (FB)

Package

: SOT-25

During stand-by time (CE pin "Low" ), current consumption is

reduced to less than 0.5μA.

With U.V.L.O. internal, the external transistor will be forcibly

switched off if used below the stipulated voltage.

■TYPICAL PERFORMANCE

■TYPICAL APPLICATION CIRCUIT

CHARACTERISTICS

703

XC6365 6366 ETR0501_001.doc

XC6365/6366 Series

■PIN CONFIGURATION

■PIN ASSIGNMENT

PIN NUMBER

PIN NAME

EXT/

FUNCTION

External Transistor Connection

Power Supply

VDD

GND

Ground

Chip Enable Soft-Start Capacitor Connection

with Soft-Start Externally Set-Up Types (C, D)

Output Voltage Monitor FB with Externally

Set-Up Types (B, D)

VOUT (FB)

■PRODUCT CLASSIFICATION

●Selection Guide

704

XC6365/6366

Series

■PRODUCT CLASSIFICATION (Continued)

●Ordering Information

XC6365①②③④⑤⑥

XC6366①②③④⑤⑥

PWM control

PWM/PFM switching control

DESIGNATOR

DESCRIPTION

SYMBOL

DESCRIPTION

: VOUT type: Internally set-up, soft-start internally set-up

: FB type: Externally set-up, soft-start internally set-up

: VOUT type: Internally set-up, soft-start externally set-up

: FB type: Externally set-up, soft-start internally set-up

: VOUT type: 3.0V output → ②=3, ③=0

: FB type: 10 fixed → ②=1, ③=0 fixed

: 300kHz

①

Type of DC/DC Converter

15～60

② ③

④

Output Voltage

Oscillation Frequency

: 500kHz (custom)

: 180kHz (custom)

Package

: SOT-25 (SOT-23-5)

⑤

⑥

: Embossed tape, standard feed

Device Orientation

: Embossed tape, reverse feed

■PACKAGING INFORMATION

●SOT-25

705

XC6365/6366 Series

■MARKING RULE

①Represents product classification

MARK

PRODUCT SERIES

XC6365A

MARK

PRODUCT SERIES

XC6366A

①

②

③

④

XC6365B

XC6366B

XC6365C

XC6366C

XC6366D

XC6365D

SOT-25

(TOP VIEW)

②Represents integer of output voltage and oscillation frequency

OSCILLATION FREQUENCY (kHz)

OUTPUT VOLTAGE

100

180

300

500

1.x

2.x

3.x

4.x

5.x

6.x

③Represents decimal number of output voltage and oscillation frequency

OSCILLATION FREQUENCY (kHz)

OUTPUT VOLTAGE

100

180

300

500

x.0

x.1

x.2

x.3

x.4

x.5

x.6

x.7

x.8

x.9

④Represents production lot number

0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)

706

XC6365/6366

Series

■BLOCK DIAGRAMS

XC6365, XC6366 Series A, C type (VOUT)

XC6365, XC6366 Series B, D type (FB)

707

XC6365/6366 Series

■ABSOLUTE MAXIMUM RATINGS

Ta = 25℃

PARAMETER

VIN Pin Voltage

VOUT Pin Voltage

FB Pin Voltage

CE Pin Voltage

EXT/ Pin Voltage

EXT/ Pin Current

SYMBOL

VDD

VOUT

VFB

VCE

VEXT/

IEXT/

RATINGS

-0.3 ~ +12

-0.3 ~ VIN +0.3

±100

150

-30 ~ +80

-40 ~ +125

UNITS

℃

Power Dissipation

Operating Temperature Range

Storage Temperature Range

Topr

Tstg

℃

Note: Voltage is all ground standardized.

■ELECTRICAL CHARACTERISTICS

XC6365A333MR, XC6366A333MR

(VOUT=3.3V, FOSC=300kHz)

Ta=25℃

PARAMETER

Output Voltage

Maximum Input Voltage

U.V.L.O. Voltage

SYMBOL

VOUT

CONDITIONS MIN.

TYP. MAX. UNITS

3.218 3.300 3.383

10.0

VIN

Same as IDD1,

VUVLO

IDD1

0.9

2.2

(Minimum Operating Voltage)

Supply Current 1

Voltage which EXT/pin voltage holding “H” level

No external components, CE=VDD, VOUT=0V

102

μA

No external components,

XC6365

XC6366

Supply Current 2

Stand-by Current

IDD2

CE=VOUT=VDD

ISTB

No external components, CE=VOUT=0V

Measuring of EXT/ waveform,

VIN=output voltage + 0.1V

0.5

Oscillation Frequency

FOSC

MAXDTY

PFMDTY No load (XC6366 only)

255

300

345

kHz

Maximum Duty Ratio

PFM Duty Ratio

100

No external components, VOUT=0V,

CE "High" Voltage

VCEH

0.65

Voltage which EXT/pin voltage holding “L” level

No external components, VOUT=0V,

Voltage which EXT/pin voltage holding “H” level

Same as IDD2, VEXT/=VDD-0.4V

Same as IDD1, VEXT/=0.4V

CE "Low" Voltage

VCEL

0.20

EXT "High" ON Resistance

EXT "Low" ON Resistance

REXTBH

REXTBL

μA

Use of a XP162A12A6 transistor

recommended

Connect RSS, CSS, CE, 0V→ 3.0V

(When VIN≦3.0V, VIN=3.0V)

Efficiency

EFFI

TSS

msec

Soft-Start Time

Conditions: 1. Unless otherwise stated, connect external components. VIN=VDD = 5.0V, IOUT = 220mA

2. XC6365/66C series external components: CSS=0.033μF, RSS=470kΩ

708

XC6365/6366

Series

■ELECTRICAL CHARACTERISTICS (Continued)

(VOUT=5.0V, FOSC=300kHz)

XC6365A503MR, XC6366A503MR

Ta=25℃

PARAMETER

Output Voltage

Maximum Input Voltage

U.V.L.O. Voltage

SYMBOL

VOUT

CONDITIONS MIN.

TYP. MAX. UNITS

4.875 5.000 5.125

10.0

VIN

Same as IDD1,

VUVLO

IDD1

0.9

2.2

(Minimum Operating Voltage)

Supply Current 1

Voltage which EXT/pin voltage holding “H” level

No external components, CE=VDD, VOUT=0V

122

μA

No external components,

XC6365

XC6366

Supply Current 2

Stand-by Current

IDD2

CE=VOUT=VDD

ISTB

No external components, CE=VOUT=0V

Measuring of EXT/ waveform,

VIN=output voltage + 0.1V

0.5

Oscillation Frequency

FOSC

MAXDTY

PFMDTY No load (XC6366 only)

255

300

345

kHz

Maximum Duty Ratio

PFM Duty Ratio

100

No external components, VOUT=0V,

CE "High" Voltage

VCEH

0.65

Voltage which EXT/pin voltage holding “L” level

No external components, VOUT=0V,

Voltage which EXT/pin voltage holding “H” level

Same as IDD2, VEXT/=VIN-0.4V

Same as IDD1, VEXT/=0.4V

CE "Low" Voltage

VCEL

0.20

EXT "High" ON Resistance

EXT "Low" ON Resistance

REXTBH

REXTBL

μA

Use of a XP162A12A6

transistor recommended

Connect RSS, CSS, CE, 0V→ 3.0V

(When VIN≦3.0V, VIN=3.0V)

Efficiency

EFFI

TSS

Soft-Start Time

msec

Conditions: 1. Unless otherwise stated, connect external components. VIN=VDD = 7.5V, IOUT = 330mA

2. XC6365/66C series external components: CSS=0.033μF, RSS=470kΩ

709

XC6365/6366 Series

■ELECTRICAL CHARACTERISTICS (Continued)

XC6365A103MR, XC6366A103MR

(VOUT=3.0V, FOSC=300kHz)

MIN. TYP.

Ta=25℃

MAX. UNITS

PARAMETER

Output Voltage

SYMBOL

VOUT

CONDITIONS

2.975 3.000 3.075

Maximum Input Voltage

U.V.L.O. Voltage

(Minimum Operating Voltage)

Supply Current 1

VIN

10.0

Same as IDD1,

Voltage which EXT/pin voltage holding “H” level

No external components, CE=VIN, VOUT=0V

No external components,

CE=VDD, FB=1.2V

No external components, CE=FB=0V

Measuring of EXT/ waveform,

VIN=output voltage + 0.1V

VUVLO

IDD1

0.9

2.2

100

μA

XC6365

XC6366

Supply Current 2

Stand-by Current

IDD2

ISTB

0.5

Oscillation Frequency

FOSC

MAXDTY

PFMDTY No load (XC6366 only)

255

300

345

kHz

Maximum Duty Ratio

PFM Duty Ratio

100

No external components, FB=0V,

CE "High" Voltage

VCEH

0.65

Voltage which EXT/pin voltage holding “L” level

No external components, VOUT=0V,

Voltage which EXT/pin voltage holding “H” level

Same as IDD2, VEXT/=VIN-0.4V

Same as IDD1, VEXT/=0.4V

CE "Low" Voltage

VCEL

0.20

EXT "High" ON Resistance

EXT "Low" ON Resistance

REXTBH

REXTBL

μA

Use of a XP162A12A6

transistor recommended

Connect RSS, CSS, CE, 0V→ 3.0V

(When VIN≦3.0V, VIN=3.0V)

Efficiency

EFFI

TSS

Soft-Start Time

msec

Conditions: 1. Unless otherwise stated, connect external components. VIN=VDD = 4.5V, IOUT = 200mA

2. XC6365/66C series external components: CSS=0.033μF, RSS=470kΩ

3. RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 100ppF

710

XC6365/6366

Series

■TEST CIRCUITS

Circuit 1. XC6365A, XC6366A

Circuit 2. XC6365B, XC6366B

Circuit 3. XC6365C, XC6366C

711

XC6365/6366 Series

■TEST CIRCUITS (Continued)

Circuit 4. XC6365D, XC6366D

Circuit 5. XC6365A, XC6366A (when used with a PNP transistor)

Circuit 6. XC6365B, XC6366B (when used with a PNP transistor)

712

XC6365/6366

Series

■TEST CIRCUITS (Continued)

Circuit 7. XC6365C, XC6366C (when used with a PNP transistor)

Circuit 8. XC6365D, XC6366D (when used with a PNP transistor)

Recommended Components

C, D type (soft-start externally set-up)

CSS : 0.033μF (Ceramic Capacitor)

RSS : 470kΩ(C type), 330kΩ(D type)

Tr : XP162A12A6PR (Torex P-channel Power MOSFET)

Please use a PNP transistor where VIN < 2.5V

: 22μH (CR54, SUMIDA, FOSC=300kHz)

47μH (CR75, SUMIDA, FOSC=180kHz)

10μH (CR54, SUMIDA, FOSC=500kHz)

B, D type (FB type)

RFB : Set up so that RFB1 / RFB2 = VOUT – 1

(VOUT = setting output voltage),

SD : MA2Q735 (Schottky Diode, MATSUSHITA)

CL :10V, 47μF (Tantalum capacitor, NICHICHEMl MCE)

CIN :16V 10μF (Tantalum capacitor, NICHICHEMI MCE)

RFB1 = RFB2 ≦ 2MΩ

CFB : Set up so that fzfb = 1÷(2π x CFB x RFB1) is within

the 0.5 to 20kHz range (10kHz conventional)

Adjustments necessary in respect of L, CL.

e.g. : VOUT = 3.0V

PNP Tr. Type

Tr : 2SA1213 (TOSHIBA)

RB : 500Ω(Adjust according to load and Tr. hFE levels)

CB : 2200pF (Ceramic Type)

RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 100pF

Set up so that CB≦1 / (2π x RB x FOSC x 0.7)

713

XC6365/6366 Series

■NOTES ON USE

1. Take ample care to ensure that none of the IC's, nor the external component's, absolute maximum ratings are exceeded.

2. Be extremely careful when selecting parts and do not limit your reference to the specifications and characteristics for the

DC/DC converter alone. The IC also depends, to a great extent, upon the external components.

3. Arrange the peripherals in the environs of the IC. In order to reduce wiring impedance, use short, thick wires. In particular,

wire the load capacitor as close as possible and strengthen the ground wiring sufficiently.

4. Ground current during switching may cause the IC's operations to become unstable due to changes in ground voltage, so

please strengthen the IC's GND pin surroundings.

●External Components

1. Setting soft start time

To set a longer soft start time, please use XC6365C or XC6365D series which soft start function is externally set up.

For the measurement of soft start time TSS, the time is needed to be between the maximum and the minimum value indicated

in the chart below. Please set a soft start capacitor CSS according to the application.

2. Setting RFB1 and CFB

fzfb=1 ÷ (2 π × CFB × RFB1)

As the combination of RFB1 and CFB enable to set fzfb between 0.5kHz to 20kHz, within the realm of fzfb=0.5kHz to

fzfb=20kHz as the chart below can be effective.

Under normal condition, please set the combination to configure around fzfb=10kHz.

714

XC6365/6366

Series

■TYPICAL PERFORMANCE CHARACTERISTICS

715

XC6365/6366 Series