TOREX XC9101 User Manual
XC9101 Series
ETR0403_004a
PWM Controlled Step-Up DC/DC Controller
■GENERAL DESCRIPTION
The XC9101 series are step-up multiple current and voltage feedback DC/DC controller ICs. Current sense, clock
frequencies and amp feedback gain can all be externally regulated.
A stable power supply is possible with output currents of up to 1.5A.
With output voltage fixed internally, V
For output voltages outside this range, we recommend the FB version, which has a 0.9V internal reference voltage. Using this
version, the required output voltage can be set using 2 external resistors.
Switching frequency can also be set externally within a range of 100 ~ 600 kHz and therefore a frequency suited to your
particular application can be selected.
With the current sense function, peak currents (which flow through the driver transistor and the coil) can be controlled.
Soft-start time can be adjusted using external resistor and capacitor.
During shutdown (CE pin=L), consumption current can be reduced to as little as 0.5μA (TYP.) or less.
■APPLICATIONS
●Mobile, Cordless phones
●Palm top computers, PDAs
●Portable games
●Cameras, Digital cameras
●Note book PCs11
■TYPICAL APPLICATION CIRCUIT
OUT is selectable in 0.1V increments within a 2.5V ~ 16.0V range (±2.5%).
■FEATURES
Stable Operations via Current & Voltage
Multiple Feedback
Unlimited Options for Peripheral Selection
Current Protection Circuit
Ceramic Capacitor Compatible
Input Voltage Range : 2.5V ~ 20V
Output Voltage Range : 2.5V ~ 16V
(Fixed Voltage Type)
: 30V + (Adjustable Type)
Oscillation Frequency Range
: 100 kHz ~ 600kHz
Output Current : Up to 1.5A
Operating Ambient Temperature
Packages : MSOP-8A, SOP-8
:-40℃～＋85℃
■TYPICAL PERFORMANCE
CHARACTERISTICS
VOUT=5.0V, f
=180 kHz
OSC
1/22
XC9101 Series
■PIN CONFIGURATION
■PIN ASSIGNMENT
PIN NUMBER
MSOP-8A SOP-8
1 1 EXT Driver
2 2 Isen Current Sense
3 3 VIN Power Input
4 4 CE/SS CE/Soft Start
5 5 CLK Clock Input
6 6 CC/GAIN Phase Compensation
7 7 VOUT/FB Voltage Sense
8 8 VSS Ground
■PRODUCT CLASSIFICATION
●Ordering Information
XC9101①②③④⑤⑥-⑦
MSOP-8A
(TOP VIEW)
(*1)
PIN NAME FUNCTION
SOP-8
(TOP VIEW)
DESIGNATOR ITEM SYMBOL DESCRIPTION
①
Type of DC/DC Controllers
C VOUT (Fixed voltage type), Soft-start externally set-up
D FB (Voltage adjustable), Soft-start externally set-up
e.g. VOUT=2.5V→②=2, ③=5
FB products→②=0, ③=9 fixed
25 ~ H0
Voltages above 10V
→10=A, 11=B, 12=C, 13=D, 14=E, 15=F, 16=H
② ③
④
Output Voltage
09
e.g. V
OUT=13.5V → ②=D, ③=5
FB products→②=0, ③=9 fixed
Oscillation Frequency A Frequency adjustable
KR MSOP-8A (1,000/Reel)
⑤⑥-⑦
Packages (Order Unit)
KR-G MSOP-8A (1,000/Reel)
SR SOP-8 (1,000/Reel)
(*1)
The “-G” suffix denotes Halogen and Antimony free as well as being fully RoHS compliant.
The standard output voltages of the XC9101C series are 2.5V, 3.3V, and 5.0V.
Voltages other than those listed are semi-custom.
2/22
■BLOCK DIAGRAM
■ABSOLUTE MAXIMUM RATINGS
PAR AMETER SYMBOL RATINGS UNITS
EXT Pin Voltage VEXT
Isen Pin Voltage VIsen
VIN Pin Voltage VIN
CE/SS Pin Voltage VCE
CLK Pin Voltage VCLK
CC/GAIN Pin Voltage VCC
VOUT/FB Pin Voltage VOUT/FB
EXT Pin Current IEXT
Power Dissipation
MSOP-8A 150
SOP-8
Pd
Operating Ambient Temperature Topr
Storage Temperature Tstg
-0.3～V
IN＋0.3
-0.3～＋22
-0.3～＋22
-0.3～＋22
-0.3～V
-0.3～V
IN＋0.3
IN＋0.3
-0.3～＋22
±100
300
-40～＋85 ℃
-55～＋125 ℃
Ta = 2 5 ℃
V
V
V
V
V
V
V
mA
mW
XC9101
Series
3/22
XC9101 Series
■ELECTRICAL CHARACTERISTICS
XC9101C33AKR
PAR AMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUITS
Output Voltage VOUT IOUT=300mA 3.218 3.300 3.382 V
Maximum
Operating Voltage
Minimum
Operating Voltage
Supply Current 1 IDD1
Supply Current 2 IDD2
Stand-by Current I
CLK
Oscillation Frequency
Frequency
Line Regulation
Frequency
Temperature Fluctuation
Maximum Duty Cycle D
Minimum Duty Cycle D
Current Limit Voltage ILIM
ISEN Current IISEN VIN=2.5V, ISEN=2.5V 4.5 7 13
VINmax 20
VINmin
VIN=2.5V, VOUT=CE=
Setting Output Voltage×0.95V
VIN=2.5V, CE=VIN
OUT=Setting Output Voltage×1.05V
V
VIN=2.5V, CE=VOUT=VSS 0.5 2.0
STB
f
RT=10.0kΩ, CT=220pF 280 330 380 kHz
OSC
Δf
ΔVIN･f
Δf
ΔTopr･f
OSC
OSC
MAX
MIN
VIN=2.5V ~ 20V
OSC
VIN=2.5V
Topr=-40 ~ +85℃
OSC
VOUT=Set Voltage×0.95V 79 85 89 %
VOUT=Set Voltage×1.05V
IN pin voltage－ISEN pin voltage
V
－ －
－
－
－ ±5 －
－ ±5 －
－ －
90 150 220 mV
－ －
2.5 V
150 255
90 176
0 %
V
μA ②
μA ②
μA ②
%
%
μA ⑥
Ta =2 5℃
①
①
①
③
③
③
④
④
⑥
CE "High" Current ICEH CE=VIN=2.5V, VOUT=0V -0.1 0 0.1
CE "Low" Current ICEL CE=0V, VIN=2.5V, VOUT=0V -0.1 0 0.1
CE "High" Voltage VCEH
CE "Low" Voltage VCEL
EXT "High" ON
Resistance
EXT "Low" ON
Resistance
Efficiency
(*1)
EFFI
R
R
EXTH
EXTL
Soft-Start Time tSS
CC/GAIN Pin
Output Impedance
Unless otherwise stated, VIN = 2.5V
NOTE:
*1: EFFI = {[(output voltage) × (output current)] ÷ [(input voltage) × (input current)]} × 100
*2: The capacity range of the capacitor used to set the external CLK frequency is 150 ~ 220pF
RCCGAIN
CLK Oscillation Starts,
V
OUT=0V, CE: Voltage applied
CLK Oscillation Stops,
V
OUT=0V, CE: Voltage applied
IN－0.4V, CE=VIN=2.5V
EXT=V
OUT=Setting voltage×0.95V
V
EXT=0.4V, CE=V
V
OUT=Setting voltage×1.05
IN=2.5V
Connect CSS and RSS,
CE : 0V→2.5V
0.6
－ －
－
－
－
－ －
0.2 V
31 58
27 45
88
－
5 10 20 ms
－
400
－ kΩ ⑦
μA ⑤
μA ⑤
V
Ω ④
Ω ④
%
⑤
⑤
①
①
4/22
XC9101
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC9101C50AKR
PAR AMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUITS
Output Voltage VOUT IOUT=300mA 4.875 5.000 5.125 V
Maximum
Operating Voltage
Minimum
Operating Voltage
Supply Current 1 IDD1
Supply Current 2 IDD2
Stand-by Current I
CLK
Oscillation Frequency
Frequency
Line Regulation
Frequency
Temperature Fluctuation
Maximum Duty Cycle D
Minimum Duty Cycle D
Current Limit Voltage ILIM
ISEN Current IISEN VIN=3.0V, ISEN=3.0V 4.5 7 13
CE "High" Current ICEH CE=VIN=3.0V, VOUT=0V -0.1 0 0.1
CE "Low" Current ICEL CE=0V, VIN=3.0V, VOUT=0V -0.1 0 0.1
CE "High" Voltage VCEH
CE "Low" Voltage VCEL
EXT "High"
ON Resistance
EXT "Low"
ON Resistance
Efficiency
(*1)
EFFI
Soft-Start Time tSS
CC/GAIN Pin
Output Impedance
NOTE: Unless otherwise stated, VIN = 3.0V.
*1: EFFI = {[(output voltage) × (output current)] ÷ [(input voltage) × (input current)]} × 100
*2: The capacity range of the capacitor used to set the external CLK frequency is 150 ~ 220pF
VINMAX 20
VINMIN
VIN=3.0V, VOUT=CE=
Setting Output Voltage×0.95V
IN=3.0V, CE=VIN
V
V
OUT=Setting Output Voltage×1.05V
VIN=3.0V, CE=VOUT=VSS
STB
f
RT=10.0kΩ, CT=220pF 280 330 380 kHz
OSC
Δf
ΔVIN･f
Δf
ΔTopr･f
OSC
OSC
OSC
OSC
VOUT=Setting Voltage×0.95V 79 85 89 %
MAX
VOUT=Setting Voltage×1.05V
MIN
IN=2.5V～20V － ±5 －
V
VIN=2.5V
Topr=-40～+85℃
IN pin voltage－ISEN pin voltage
V
CLK Oscillation Starts,
V
OUT=0V, CE: Voltage applied
CLK Oscillation Stops,
V
OUT=0V, CE: Voltage applied
IN－0.4V, CE=VIN=3.0V
REXTH
REXTL
EXT=V
V
OUT=Setting voltage×0.95V
EXT=0.4V, CE=VIN=3.0V
V
OUT=Setting voltage×1.05V
－ －
－
－
－
－ ±5 －
－ －
90 150 220 mV
0.6
－ －
－
－
－
CCGAIN
R
Connect C
CE: 0V→3.0V
SS and RSS,
－
－
－ －
160 270
90 176
0.5 2.0
－ －
27 51
25 37
87
5
400
V
2.5 V
μA ②
μA ②
μA ②
%
%
0 %
μA ⑥
μA ⑤
μA ⑤
V
0.2 V
Ω ④
Ω ④
－
－
%
ms
－ kΩ ⑦
Ta =2 5℃
①
①
①
③
③
③
④
④
⑥
⑤
⑤
①
①
5/22
XC9101 Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC9101D09AKR
PAR AMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUITS
Output Voltage VOUT IOUT=300mA 0.8775 0.9 0.9225 V
Maximum
Operating Voltage
Minimum
Operating Voltage
Supply Current 1 IDD1 VIN=2.5V, VIN=CE, FB=0.9×0.95V
Supply Current 2 IDD2
Stand-by Current I
CLK
Oscillation Frequency
Frequency
Line Regulation
Frequency
Temperature Fluctuation
Maximum Duty Cycle D
Minimum Duty Cycle D
Current Limiter Voltage ILIM
ISEN Current IISEN VIN=2.5V, ISEN=2.5V 4.5 7 13
CE "High" Current ICEH CE=VIN=2.5V, FB=0V -0.1 0 0.1
CE "Low" Current ICEL CE=0V, VIN=2.5V, FB=0V -0.1 0 0.1
CE "High" Voltage VCEH
CE "Low" Voltage VCEL
EXT "High"
ON Resistance
EXT "Low"
ON Resistance
Efficiency
(*1)
EFFI
Soft-Start Time tSS
CC/GAIN Pin
Output Impedance
NOTE: Unless otherwise stated, VIN = 2.5V
External Components: R
*1: EFFI = {[(output voltage) × (output current)] ÷ [(input voltage) × (input current)]} × 100
*2: The capacity range of the capacitor used to set the external CLK frequency is 150 ~ 220pF.
VINMAX 20
VINMIN
－ －
－
VIN=2.5V, CE=VIN,
V
OUT=0.9×1.05V
VIN=2.5V, CE=FB=VSS
STB
RT=10.0kΩ, CT=220pF 280 330 380 kHz
f
OSC
Δf
ΔV
Δf
ΔTopr･f
OSC
IN･f
OSC
MAX
MIN
V
IN=2.5V～20V － ±5 －
OSC
VIN=2.5V
Topr=-40～+85℃
OSC
VOUT=0.9×0.95V 79 85 89 %
VOUT=0.9×1.05V 0 %
IN pin voltage－ISEN pin voltage
V
－
－
－ ±5 －
90 150 220 mV
－ －
2.5 V
150 255
90 176
0.5 2.0
μA ②
μA ②
μA ②
μA ⑥
μA ⑤
μA ⑤
CLK Oscillation Start,
FB=0V, CE: Voltage applied
CLK Oscillation Stop,
FB=0V, CE: Voltage applied
IN－0.4V, CE=VIN
REXTH
R
EXTL
EXT=V
OUT=Setting voltage×0.95V
V
EXT=0.4V, CE=V
V
OUT=Setting voltage×1.05V
Connect C
IN
SS and RSS,
CE : 0V→2.5V
CCGAIN
R
FB1=200kΩ, RFB2=100kΩ, CFB=82pF
0.6
－ －
－
－
－
－ －
0.2 V
31 58
27 45
88
－
5 10 20 ms
－
400
－ kΩ ⑦
Ta =2 5℃
①
V
①
①
③
%
%
③
③
④
④
⑥
V
⑤
⑤
Ω ④
Ω ④
%
①
①
6/22
XC9101
■TYPICAL APPLICATION CIRCUITS
XC9101C33AKR
NMOS : XP161A1355PR
Coil : 22μH (CR105 SUMIDA)
Resistor : 20mΩ for I
Capacitors : 180pF (ceramic) for CLK, 470pF (ceramic) for CC/GAIN, 0.1μF (ceramic) for SS,1μF (ceramic) for Bypass
SD : U3FWJ44N (TOSHIBA)
XC9101C50AKR
NMOS : XP161A1355PR
Coil : 22μH (CR105 SUMIDA)
Resistor : 20mΩ for ISEN (NPR1 KOA), 33kΩ(trimmer) for CLK, 100kΩ for SS
Capacitors : 180pF (ceramic) for CLK, 470pF (ceramic) for CC/GAIN, 0.1μF (ceramic) for SS,1μF (ceramic) for Bypass
SD : U3FWJ44N (TOSHIBA)
47μF (OS)+220μF (any) for CL, 220μF (any) for C
47μF (OS)+220μF (any) for CL, 220μF(any) for C
SEN (NPR1 KOA), 33kΩ(trimmer) for CLK, 100kΩ for SS
IN
IN
Series
7/22
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