XC9221A095MR Torex Semiconductor Ltd, XC9221A095MR Datasheet

IC CTLR DC/DC STPDN 500KHZ SOT25

XC9221A095MR

Manufacturer Part Number
XC9221A095MR
Description
IC CTLR DC/DC STPDN 500KHZ SOT25
Manufacturer
Torex Semiconductor Ltd
Type
Step-Down (Buck)r
Datasheet

Specifications of XC9221A095MR

Internal Switch(s)
No
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
0.9V
Current - Output
3A
Frequency - Switching
500kHz
Voltage - Input
2.8 ~ 16 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Power - Output
250mW
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
893-1105-2
XC9220/XC9221
16V Input Voltage, Step-Down DC/DC Controller ICs.
C E
■GENERAL DESCRIPTION
The XC9220/XC9221 series is a group of multi-purpose step-down DC/DC controller ICs. The ICs enable a high efficiency,
stable power supply with an output current up to 3A to be configured using only a transistor, a coil, a diode, and two capacitors
connected externally. Low ESR capacitors such as a ceramic capacitor can be used as an output capacitor.
The XC9220/XC9221 series has a 0.9V (±1.5%) reference voltage, and using externally connected resistors, the output
voltage can be set freely. With an internal switching frequency of 300kHz and 500kHz 1.0MHz, small external components
can also be used. The XC9220 series is PWM control, and the XC9221 series is PWM/PFM mode, which automatically
switches from PWM to PFM during light loads and high efficiencies can be achieved over a wide range of load conditions.
As for the soft-start time, the XC9220/XC9221A and C series is internally set to 4msec and the XC9220/XC9221B and D
series can be externally set-up. With the built-in UVLO (Under Voltage Lock Out) function, the external P-channel driver
transistor is forced OFF when input voltage becomes 2.3V or lower.
■APPLICATIONS
●Set top boxes
●Digital TVs
●DVD/HDD recorders
●Portable information terminals
●Notebook computers
■TYPICAL APPLICATION CIRCUIT
V
IN
* RSENSE : Tantalum and electrolytic capacitors can be used, in w hich case,
C
IN
RSENSE becomes unnecessary.
SBD
MOSFET
Pch
C
L
FB
( f or ceramic CL )
RS ENS E
R
R
FB1
FB2
Series
V
OUT
CL
■TYPICAL PERFORMANCE
■FEATURES
Operating Voltage Range
Output Voltage Range
Output Voltage Externally Set : 0.9V (accuracy +1.5%)
Output Current
Oscillation Frequency
Control Methods
Soft-Start Function
Protection Circuits
Low ESR
Capacitor Compatible
Packages
Environmentally Friendly
CHARACTERISTICS
●Efficiency vs. Output Current
PchMOSFET: CPH3308 (SANYO), CDD=1.0μF (ceramic), RIN=10Ω
100
90
80
70
60
50
40
30
20
10
0
0.1
XC9221A095MR (VOUT=3.3V, FOSC=500kHz)
VIN=5.0V
1
Output Current IOUT (mA)
CIN=47μF (OS-Con), CL=47μF (OS-Con),
VIN=12.0V
10
: 2.8V ~ 16.0V
: 1.2V or more
: Less than 3.0A
: 300kHz, 500kHz, and 1.0MHz
: PWM control (XC9220)
: 4ms, internally set
: Integral protection (1.0 ms)
: Ceramic capacitor
: SOT-25
: EU RoHS Compliant, Pb Free
(XC9220/XC9221 Aand B series)
PWM/PFM automatic switching
(XC9221)
(XC9220/XC9221A, 500kHz)
Externally set (XC9220/XC9221B)
USP-6C
Short-circuit protection
L=10μH (CDRH8D43, SUMIDA)
100
VIN=16.0V
1000
ETR0511_009b
10000
1/22

Related parts for XC9221A095MR

XC9221A095MR Summary of contents

Page 1

... Externally set (XC9220/XC9221B) : Integral protection (1.0 ms) (XC9220/XC9221 Aand B series) Short-circuit protection : Ceramic capacitor : SOT-25 USP- RoHS Compliant, Pb Free XC9221A095MR (VOUT=3.3V, FOSC=500kHz) CIN=47μF (OS-Con), CL=47μF (OS-Con), L=10μH (CDRH8D43, SUMIDA) VIN=5.0V VIN=16.0V VIN=12. 100 1000 Output Current  ...

Page 2

XC9220/XC9221 ■PIN CONFIGURATION V EXT CE SOT-25 (TOP VIEW) ■PIN ASSIGNMENT PIN NUMBER SOT-25 USP- ■PRODUCT CLASSIFICATION ●Ordering ...

Page 3

DIAGRAMS ●XC9220/21A and C series ■ ABSOLUTE MAXIMUM RATINGS PARAMETER V Pin Voltage IN FB Pin Voltage CE/C Pin Voltage SS EXT/ Pin Voltage EXT/ Pin Current SOT-25 Power Dissipation USP-6C Operating Temperature Range Storage Temperature Range ● XC9220/21B ...

Page 4

XC9220/XC9221 ■ELECTRICAL CHARACTERISTICS XC9220/XC9221 A and C series PARAMETER SYMBOL FB Voltage Input Voltage Range UVLO Voltage V (Minimum Operating Voltage) Supply Current 2 Stand-by Current Oscillation Frequency f Maximum Duty Ratio MAXDTY PFM Duty Ratio PFMDTY EXT/ High On ...

Page 5

CHARACTERISTICS (Continued) XC9220/XC9221 B and D series PARAMETER SYMBOL FB Voltage V Input Voltage Range V UVLO Voltage V UVLO (Minimum Operating Voltage) Supply Current 2 I DD2 Stand-by Current I STB Oscillation Frequency F OSC Maximum Duty Ratio ...

Page 6

XC9220/XC9221 ■TYPICAL APPLICATION CIRCUITS ■OPERATIONAL EXPLANATION The XC9220/XC9221 series consists of a reference voltage source, ramp wave circuit, error amplifier, PWM comparator, phase compensation circuit, protection circuits, UVLO circuit and others. The series ICs compare, using the error amplifier, the ...

Page 7

EXPLANATION (Continued) <UVLO (Under Voltage Lock Out) > When the input voltage becomes 2.3V (TYP.) or lower, the external P-channel driver transistor is forced OFF. Once the UVLO operates, the XC9220/XC9221A and C series (soft-start internally set type) resets ...

Page 8

XC9220/XC9221 ■OPERATIONAL EXPLANATION (Continued) <Protection Circuits> 1. Integral Protection Circuit (Latch Type) In the circuit of the XC9220/XC9221 A and B series, the more load current becomes larger, the duty of the EXT/ pin gradually expands, and the duty reaches ...

Page 9

EXPLANATION (Continued) ● Output Voltage Setting Output voltage can be set by adding split resistors. Output voltage is determined by the following equation, based on the values of R and R . The sum of R FB1 FB2 V ...

Page 10

XC9220/XC9221 ■OPERATIONAL EXPLANATION (Continued) ● Setting of Coil Value Recommended inductance value of coil by oscillation frequency is shown in the chart below. fOSC (kHz) 300 500 1000 However, the more current change in each pulse becomes larger, the more ...

Page 11

ON USE 1. The XC9220/XC9221 series are designed for use with an output ceramic capacitor. If, however, the potential difference between input and output is too large, a ceramic capacitor may fail to absorb the resulting high switching energy ...

Page 12

XC9220/XC9221 ■ NOTES ON USE (Continued) ● Instructions on Pattern Layout 1. Wire external components as close to the IC as possible and use thick, short connecting traces to reduce the circuit impedance. 2. Please pay special attention to the ...

Page 13

CIRCUITS Circuit 1: Supply Current, Stand-by Current, CE Current VIN A A CE/CSS CIN:1uF Circuit 3: Oscillation Frequency, PFMDUTY, UVLO, Efficiency Circuit 4: EXT On Resistance, FB Current VIN CIN:1uF CE/CSS Circuit ...

Page 14

XC9220/XC9221 ■TYPICAL PERFORMANCE CHARACTERISTICS (1) Efficiency vs. Output Current XC9220/21x095xx Tr:2SJ646, SBD:DE5PC3, CDRH127-10uH, CIN=10uF(ceramic), CL=44uF(ceramic), RSENSE=50mohm VIN=12V => VOUT=5V 100 0 100 Output Current: IOUT (mA) (2) Output ...

Page 15

PERFORMANCE CHARACTERISTICS (Continued) (4) FB Voltage Temperature Characteristics XC9220/21 Series 1.00 0.95 0.90 0.85 0.80 0.75 -50 - Ambient Temperature ℃ ) (6) Input Voltage Temperature Characteristics XC9220/21 Series VIN=5V, Fosc=300k,500kHz ...

Page 16

XC9220/XC9221 ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (10) EXT H ON Resistance Characteristics XC9220/21 Series Input Voltage: VIN (V) (11) Soft-Start Time Temperature Characteristics XC9220/21 Series VIN=5V, Fosc=300k,500kHz 8.0 ...

Page 17

PERFORMANCE CHARACTERISTICS (Continued) (13) Short-Circuit Protection Temperature Characteristics XC9220/21 Series 0.8 0.7 0.6 0.5 0.4 0.3 -50 - Ambient Temperature ℃ ) (15) CE Threshold Temperature Characteristics XC9220/21 Series 1.2 1.0 0.8 0.6 CE_L ...

Page 18

XC9220/XC9221 ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (17) Load Transient Response Characteristics XC9220x095xx (500kHz, PWM Control) <External Components> Tr: 2SJ616 (SANYO), SBD: D1FH3 (SHINDENGEN), L=10μH CDRH8D43, SUMIDA) C =47μF (OS-Con), CL=47μF (OS-Con) IN =0.1mA→1000mA ○I OUT V =5.0V, V =3.3V, V =100mV/div., ...

Page 19

INFORMATION ●SOT-25 (SOT-23-5) ●USP-6C XC9220/XC9221 Series 19/22 ...

Page 20

XC9220/XC9221 ■PACKAGING INFORMATION (Continued) ●USP-6C Reference Pattern Layout 20/22 Series ●USP-6C Reference Metal Mask Design ...

Page 21

MARKING RULE ●SOT-25 ① represents product series ② represents product types MARK SOT-25 (TOP VIEW ③ represents oscillation frequency MARK ④ represents production lot number and ...

Page 22

... 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. 22/22 Series ...

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