XC9223B081AR Torex Semiconductor Ltd, XC9223B081AR Datasheet

XC9223B081AR

Manufacturer Part Number

XC9223B081AR

Description

BUCK CONVERTER, 1MHZ SYNC., 9223

Manufacturer

Torex Semiconductor Ltd

Datasheet

1.XC9223B081AR.pdf (25 pages)

Specifications of XC9223B081AR

Primary Input Voltage

No. Of Outputs

Output Voltage

Output Current

Voltage Regulator Case Style

MSOP

No. Of Pins

Operating Temperature Range

-40Â°C To +85Â°C

Svhc

No SVHC

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

BOSTOCK HK LIMITED

Part Number:

XC9223B081AR

Manufacturer:

XILINX

Company:

Meier Automation Equipment Co., Limited

Part Number:

XC9223B081AR

Manufacturer:

TOREX

Quantity:

20 000

Current page: 1 of 25
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■TYPICAL APPLICATION CIRCUIT

■APPLICATIONS

XC9223/XC9224

1A Driver Transistor Built-In Step-Down DC/DC Converters

■GENERAL DESCRIPTION

The XC9223/XC9224 series are synchronous step-down DC/DC converters with a 0.21Ω (TYP.) P-channel driver transistor and a

synchronous 0.23Ω (TYP.) N-channel switching transistor built-in. A highly efficient and stable current can be supplied up to 1.0A by

reducing ON resistance of the built-in transistor. With a high switching frequency of 1.0MHz or 2.0MHz, a small inductor is selectable;

therefore, the XC9223/XC9224 series are ideally suited to applications with height limitation such as HDD or space-saving

applications. Current limit value can be chosen either 1.2A (MIN.) when the LIM pin is high level, or 0.6A (MIN.) when the LIM pin is

low level for using the power supply which current limit value differs such as USB or AC adapter. With the MODE/SYNC pin, the

XC9223/XC9224 series provide mode selection of the fixed PWM control or automatically switching current limit PFM/PWM control.

As for preventing unwanted switching noise, the XC9223/XC9224 series can be synchronized with an external clock signal within the

range of ± 25% toward an internal clock signal via the MODE/SYNC pin. For protection against heat damage of the ICs, the

XC9223/XC9224 series build in three protection functions: integral latch protection, thermal shutdown, and short-circuit protection.

With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when input voltage

becomes 1.8V or lower. The XC9223B/XC9224B series’ detector function monitors the discretional voltage by external resistors.

(*1) A capacitor of 2200pF

pin and the V

Please refer to the page showing INSTRUCTION ON PATTERN LAYOUT for more detail.

●HDD

●Notebook computers

●CD-R / RW, DVD

●PDAs, Portable communication modems

●Digital cameras, Video recorders

●Various general-purpose power supplies

pin.

～

0.1μF is recommended to place at the C

between the AGND

Series

■FEATURES

Input Voltage Range

Output Voltage Range

Oscillation Frequency

Output Current

Maximum Current

Limit

Controls

Protection Circuits

Soft-Start Time

Voltage Detector

Built-in P-channel

MOSFET

Built-in Synchronous

N-channel MOSFET

High Efficiency

Synchronized with an External Clock Signal

Ceramic Capacitor Compatible

Packages

* SOP-8 package is available for the XC9223D type only.

Environmentally Friendly

■TYPICAL PERFORMANCE

●

Efficiency vs. Output Current

CHARACTERISTICS

100

L=4.7μH (CDRH4D28C), CIN=10μF (ceramic), CL=10μF (ceramic)

VIN=5V, FOSC=1M Hz, L =4.7uH(CDRH4D2 8C),

Output Current: IOUT (mA)

XC9223B081Ax

☆GreenOperation-Compatible

: 2.5V ~ 6.0V

: 0.9V ~ V

: 1MHz, 2MHz (+15% accuracy)

: 1.0A

: 0.6A (MIN.) ~ 0.9A (MAX)

: 1.2A (MIN.) ~ 2.0A (MAX.)

: PWM/PFM or PWM by MODE pin

: Thermal shutdown

: 1ms (TYP.) internally set

: B type (with VD function)

: 0.21Ω

: 0.23Ω

: 95% (V

: MSOP-10, USP-10B, SOP-8

: EU RoHS Compliant, Pb Free

XC9223B081Ax

Integral latch method

Short-circuit protection

D type (without VD function)

(No Schottky Barrier Diode Required)

CIN=10 uF(ceram i c), CL=1 0uF(cera m i c)

with LIM pin=’L’

with LIM pin=’H’

PW M/PFM

PW M

IN (set by FB pin)

=5.0V, V

VOUT=3.3V

VOUT=1.5V

100

OUT

VIN=5V, FOSC=1MHz,

ETR0509_012

=3.3V)

1/25

1000

Related parts for XC9223B081AR

XC9223B081AR Summary of contents

Page 1

XC9223/XC9224 1A Driver Transistor Built-In Step-Down DC/DC Converters ■GENERAL DESCRIPTION The XC9223/XC9224 series are synchronous step-down DC/DC converters with a 0.21Ω (TYP.) P-channel driver transistor and a synchronous 0.23Ω (TYP.) N-channel switching transistor built-in. A highly efficient and stable current ...

Page 2

XC9223/XC9224 ■PIN CONFIGURATION VIN 1 VDIN 2 AGND 3 VDOUT MSOP-10 (TOP VIEW VDOUT 4 AGND 3 VDIN 2 VIN 1 USP-10B (BOTTOM VIEW) ■PIN ASSIGNMENT PIN NUMBER MSOP-10 * USP-10B * SOP ...

Page 3

CLASSIFICATION ●Selection Guide ●Ordering Information ( *1 ) XC9223①②③④⑤⑥-⑦ <The common CE pin in the DC/DC block and the voltage detector block.> XC9224B②③④⑤⑥-⑦ <No CE pin in the voltage detector block. (Constant operating of the voltage ...

Page 4

XC9223/XC9224 ■BLOCK DIAGRAM ●XC9223B/XC9224B Series LIM FB Vref with Soft-Start MODE/ SYNC VDIN ●XC9223D Series LIM FB Vref with Soft-Start MODE/ SYNC 4/25 Series Error Amp. Comparator PWM Logic Ramp Wave PMW/PFM Generator, OSC VD Error ...

Page 5

MAXIMUM RATINGS PARAMETER V Pin Voltage IN V Pin Voltage DIN V Pin Voltage DOUT V Pin Current DOUT FB Pin Voltage LIM Pin Voltage MODE/SYNC Pin Voltage CE Pin Voltage Lx Pin Voltage Lx Pin Current MSOP-10 Power ...

Page 6

XC9223/XC9224 ■ELECTRICAL CHARACTERISTICS XC9223/XC9224 Series PARAMETER SYMBOL Input Voltage FB Voltage Output Voltage Setting Range V Maximum Output Current 1 (*1) I OUTMAX1 Maximum Output Current 2 (*1) I OUTMAX2 U.V.L.O. Voltage Supply Current 1 Supply Current 2 Stand-by Current ...

Page 7

CHARACTERISTICS (Continued) XC9223/XC9224 Series (Continued), Voltage Detector Block (*9) PARAMETER SYMBOL Detect Voltage Release Voltage Hysteresis Width Output Current I Delay Time V ‘H’ Current I DIN V ‘L’ Current I DIN V ‘H’ Current I DOUT VDOUTH V ...

Page 8

XC9223/XC9224 ■TYPICAL APPLICATION CIRCUIT (*1) A capacitor of 2200pF ～ Please refer to the page showing INSTRUCTION ON PATTERN LAYOUT for more detail. <Output Voltage Setting> Output voltage can be set by adding external split resistors. Output voltage is determined ...

Page 9

EXPLANATION Each unit of the XC9223/XC9224 series consists of a reference voltage source, a ramp wave circuit, error amplifier, PWM comparator, phase compensation circuit, output voltage adjustment resistors, P-channel MOS driver transistor, N-channel MOS synchronous rectification switching transistor, current ...

Page 10

XC9223/XC9224 ■OPERATIONAL EXPLANATION (Continued) <Thermal Shutdown> For protection against heat damage of the ICs, thermal shutdown function monitors chip temperature. The thermal shutdown circuit starts operating and the driver transistor will be turned off when the chip’s temperature reaches 150 ...

Page 11

EXPLANATION (Continued) <PFM Switch Current> In PFM control operation, until coil current reaches to a specified level (I time that the P-ch MOSFET is kept on (TON) can be given by the following formula. × － →I TON= L ...

Page 12

XC9223/XC9224 ■NOTES ON USE 1. The XC9223/XC9224 series is designed for use with ceramic output capacitors. If, however, the potential difference between dropout voltage, a ceramic capacitor may fail to absorb the resulting high switching energy and oscillation could occur ...

Page 13

ON PATTERN LAYOUT 1. In order to stabilize V ’s voltage level, we recommend that a by-pass capacitor (C IN possible to the V & V pins Please mount each external component, especially CI 3. Wire ...

Page 14

XC9223/XC9224 ■TEST CIRCUITS Circuit ① Waveform Measurement Point VIN CE 1uF MODE/ SYNC ILIM VDOUT AGND Circuit ③ CIN * External Components L (1MHz) : 4.7μH (CDRH4D28C, SUMIDA) L (2MHz) : 2.2μH (VLCF4020T-2R2N1R7, TDK) 　　CIN : 10μF (ceramic) ...

Page 15

CIRCUITS (Continued) Circuit ⑤ VIN A CE MODE/ A SYNC A ILIM 1μF A VDOUT AGND Circuit ⑥ VIN CE MODE/ 1μF SYNC ILIM VDOUT AGND Circuit ⑦ VIN CE MODE/ 1μF SYNC 200kΩ ILIM A VDOUT AGND Waveform ...

Page 16

XC9223/XC9224 ■TYPICAL PERFORMANCE CHARACTERISTICS (1) Efficiency vs. Output Current XC9223B081Ax V =5V, F =1MHz, L=4.7μH (CDRH4D28C), VIN=5V, FOSC=1M Hz, L=4.7uH(CDRH4D28C), IN OSC C =10μF (ceramic), CL=10μF (ceramic) CIN=10uF(ceram ic), CL=10uF(ceram ic) IN 100 ...

Page 17

PERFORMANCE CHARACTERISTICS (Continued) (2) Output Voltage vs. Output Current (Continued) XC9223B081Ax VIN=3.3V,T opr=25 V =3.3V, Topr=25℃, L=4.7μH (CDRH4D28C), IN CIN=10uF(ceram ic), CL=10uF(ceram ic) C =10μF (ceramic), CL=10μF (ceramic) IN 2.8 2 Control 2.6 2.5 2.4 PW M/PFM ...

Page 18

XC9223/XC9224 ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (6) Soft Start Time XC9223/XC9224 Series XC9223/24 　 Series VIN=5.0V,VOUT =3.3V,CE=0 → 5V VOUT : 1V/div 500μs / div 500usec/div (7) FB Voltage vs. Supply Voltage XC9223/9424 Series XC9223/XC9224 Series IOUT =0.1m A,T opr=25 0.816 ...

Page 19

PERFORMANCE CHARACTERISTICS (Continued) (8) Load Transient Response XC9223B081Ax <1MHz> V =5.0V, V =3.3V, MODE/SYNC=V IN OUT L=4.7μH (CDRH4D28C), C =10μF (ceramic VOUT:200mV/div IOUT=200mA IOUT=1mA 50usec/div 50μs / div VOUT:200mV/div IOUT=200mA 50usec/div 50μs / div V =5.0V, V ...

Page 20

XC9223/XC9224 ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (8) Load Transient Response (Continued) XC9223B081Ax <1MHz> (Continued) V =5.0V, V =1.5V, MODE/SYNC=V IN OUT L=4.7μH (CDRH4D28C VOUT:200mV/div IOUT=1mA 50usec/div 50μs / div VOUT:200mV/div IOUT=200mA 50μs / div 50usec/div V =5.0V, V =1.5V, ...

Page 21

PERFORMANCE CHARACTERISTICS (Continued) (8) Load Transient Response (Continued) XC9223B082Ax <2MHz> V =5.0V, V =3.3V, MODE/SYNC=V IN OUT L=2.2μH (CDRH4D28), C =10μF (ceramic VOUT:200mV/div IOUT=1mA 50usec/div 50μs / div VOUT:200mV/div IOUT=200mA 50usec/div 50μs / div V =5.0V, V ...

Page 22

XC9223/XC9224 ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (8) Load Transient Response (Continued) XC9223B082Ax <2MHz> (Continued) V =5.0V, V =1.5V, MODE/SYNC=V IN OUT L=2.2μH (CDRH4D28), C =10μF (ceramic VOUT:200mV/div IOUT=1mA 50usec/div 50μs / div VOUT:200mV/div IOUT=200mA 50μs / div 50usec/div V ...

Page 23

INFORMATION ●MSOP-10 3.00+0.10 +0.1 (0.5) 1 0.20 -0.05 ●SOP-8 +0.50 5.0 -0.20 1.27±0.03 0.4±0.1 ●USP-10B 1 0.15+0.08 1 +0.01 0.2 -0.1 XC9223/XC9224 Series 23/25 ...

Page 24

XC9223/XC9224 ■PACKAGING INFORMATION (Continued) ●USP-10B Reference Pattern Layout ■MARKING RULE ●MSOP- ① ② ③ ④ ⑤ ⑥ ⑦ MSOP-10 (TOP VIEW) 24/25 Series ●USP-10B Reference Metal Mask Design ① represents ...

Page 25

... Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this datasheet may be copied or reproduced without the prior permission of TOREX SEMICONDUCTOR LTD. XC9223/XC9224 Series 25/25 ...

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