)
V
XC9120/XC9121/XC9122
Series
ETR0409-003
Step-Up DC/DC Controller IC, MAXDUTY: 93%
■GENERAL DESCRIPTION
XC9120/9121/9122 Series are PWM, PWM/PFM auto/external switching controlled step-up DC/DC converter controller ICs.
Since maximum duty ratio is as large as 93%, the series is the best for the applications used as high step-up ratios, such as
the LCD panels and OLED. In this series, even if it is a high step-up ratio, the output voltage stabilized at high efficiency can
be obtained. With 0.9V (±2.0%) of reference voltage supply internal, and using external resistors, RFB1 and 2, output
voltage can be set up freely within a range of 1.5V to 30V. For a current sense, with the use of RSENSE, ceramic capacitors
can be used as load capacitors and allows for lower output ripple and reduced PCB area requirements.
Control automatically switches from PWM to PFM during light loads with the XC9121 series and the XC9122 series can
switch the control from PWM to PFM using external signals depending on the circuit conditions..
During stand-by (when the CE pin is low), all circuits are shutdown to reduce current consumption to as low as 1.0μA or less.
The overcurrent limit circuit of this IC is designed to monitor the ripple voltage of the FB pin and operates the IC to stop when
the ripple voltage runs over 250mV. The IC resumes its operation with a toggle of the CE pin or by turning the power supply
back on.
■APPLICATIONS
●Power Supply for the LCDs.
●High Step-Up Ratio Equipment (OLED, etc.)
■TYPICAL APPLICATION CIRCUIT
■FEATURES
Input Voltage Range : 0.9V~6.0V
Operating Voltage Range
Output Voltage Range : 1.5V~30V (externally set)
Reference voltage 0.9V (±2.0%)
Oscillation Frequency : 100kHz (±15%)
Output Current : ≥80mA (V
Control : XC9120 (PWM)
High Efficiency : 85% (TYP.)
: (V
Stand-by Function : I
Load Capacitors : Low ESR capacitor compatible
Current Limiter : Operates when ripple is 250mV
Maximum Duty Cycle : 93% (TYP.) for High Step-up Ratio
Packages : SOT-25, USP-6C
* When using external components showing in the circuit below.
■TYPICAL PERFORMANCE
CHARACTERISTICS
XC9122D091 (100kHz, 15.0V)
100
PWM/PF M
80
60
40
Efficiency: EFFI(%
20
0
0.1 1 10 100
☆GreenOperation-Compatible
: 1.8V~6.0V
=3.6V, V
IN
OUT
=15V)*
: XC9121 (PWM/PFM Automatic)
: XC9122 (PWM/PFM Externally)
=3.6V, V
IN
=1.0μA (MAX. )
STB
L=47uH (CDRH5D28),SD:XB01SB04A2
CL= 40uF( Cerami c), Tr:161A11A 1
PWM
Output Current: IOUT(mA)
OUT
VIN =2.7V
=15V, I
4.2V
3.2V
OUT
3.6
=10mA)*
1/17
XC9120/XC9121/XC9122
■PIN CONFIGURATION
■PIN ASSIGNMENT
PIN NUMBER
SOT-25 USP-6C
EXT
5
5 4
1 2 3
132
FB
DD
V
SOT-25 (TOP VIEW)
GND
4
CE
USP-6C (BOTTOM VIEW)
PIN NAME FUNCTION
Series
1 6 FB Output Voltage Setting Resistor Connection
2 2 VDD Supply Voltage
3 4
CE Chip Enable (Operates when "H" Level)
CE (/PWM) PWM/PFM Switch*
4 3 GND Ground
5 1 EXT External Transistor Drive Connection
- 5 NC No Connection
* The XC9122 series combines the CE pin and PWM/PFM switch pin.
■FUNCTION
XC9120/9121 Series
CE PIN IC OPERATIONAL STATE
H Operation
L Shut-Down
XC9122 Series
CE/PWM PIN IC OPERATIONAL STATE
H More than VDD - 0.2 (V) Operation (PWM control)
M 0.65 ~ VDD – 1.0 (V) Operation (PWM/PFM automatic switching control
L 0 ~ 0.2 (V) Shut-Down
2/17
* The dissipation pad for the
USP-6C package should be
solder-plated in recommended
mount pattern and metal masking
so as to enhance mounting strength
and heat release. If the pad needs
to be connected to other pins, it
should be connected to the V
(Pin #2).
DD pin
r
XC9120/XC9121/XC9122
■ PRODUCT CLASSIFICATION
●Ordering Information
XC9120①②③④⑤⑥-⑦
XC9121①②③④⑤⑥-⑦
XC9122①②③④⑤⑥-⑦
DESIGNATOR DESCRIPTION SYMBOL DESCRIPTION
① Type of DC/DC Controller
② ③ Output Voltage 09 : FB Voltage (ex. FB Voltage=0.9V→②=0, ③=9)
④ Oscillation Frequency 1 : 100kHz
⑤⑥-⑦
(*1)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
(*2)
The device orientation is fixed in its embossed tape pocket. For reverse orientation, please contact your local Torex sales office o
representative. (Standard orientation: ⑤R-⑦, Reverse orientation: ⑤L-⑦)
■ BLOCK DIAGRAM
■ ABSOLUTE MAXIMUM RATINGS
Power Dissipation
Operating Temperature Range Topr -40 ~ +85
* Voltage is all ground standardized.
PAR AMETER SYMBOL RATINGS UNIT
VDD Pin Voltage VDD -0.3 ~ 12.0 V
FB Pin Voltage VFB -0.3 ~ 12.0 V
CE Pin Voltage VCE -0.3 ~ 12.0 V
EXT Pin Voltage VEXT -0.3 ~ VDD + 0.3 V
EXT Pin Current IEXT ±100 mA
Storage Temperature Range Tstg -55 ~ +125
(*1)
: PWM Control
(*1)
: PWM/PFM Automatic Switching Control
(*1)
: PWM/PFM Externally Switching Control
B
: With current limiter
D : No current limiter
: SOT-25
: SOT-25 (Halogen & Antimony free)
Packages
Taping Type
(*2)
MR
MR-G
ER : USP-6C
ER-G : USP-6C (Halogen & Antimony free)
Ta =2 5℃
SOT-25 250
USP-6C
Pd
120
mW
℃
℃
Series
3/17
(
XC9120/XC9121/XC9122
■ELECTRICAL CHARACTERISTICS
XC9120B091, XC9121B091, XC9122B091
XC9120D091, XC9121D091, XC9122D091
PAR AMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
V
NOTE:
*1: Although the IC starts step-up operations from a V
Therefore, a V
*2: The overcurrent limit circuit of this IC is designed to monitor the ripple voltage so please select your external components carefully to
FB Voltage
Supply Voltage Range
(*1)
Output Voltage Setting
Range
Operation Start Voltage VST1
Oscillation Start Voltage
(*1)
Operation Hold Voltage VHLD
Supply Voltage 1 IDD1 Same as VST2, VDD=3.0V - 25 50 μA ④
Supply Voltage 2 IDD2 Same as IDD1, FB=1.2V - 13 30 μA ④
Stand-by Current ISTB Same as IDD1, CE=0V - - 1.0 μA ⑤
Oscillation Frequency fOSC Same as IDD1 85 100 115 kHz ④
Maximum Duty Ratio MAXDTY Same as IDD1 89 93 96 % ④
PFM Duty Ratio
Over Current Sense
Voltage (*2)
Efficiency (*3) EFFI IOUT=10mA - 85 - % ①
Soft-Start Time tSS 5.0 10.0 20.0 ms ①
CE "H" Voltage VCEH Same as IDD1 0.65 - - V ⑤
CE "L" Voltage VCEL Same as IDD1 - - 0.20 V ⑤
EXT "H" ON Resistance REXTH Same as IDD1, VEXT=VOUT-0.4V - 24 36 Ω ④
EXT "L" ON Resistance REXTL Same as IDD1, VEXT=0.4V - 16 24 Ω ④
PWM ‘H’ Voltage (*4) VPWMH IOUT=1mA (XC9122B/D type) VDD-0.2 - - V ①
PWM ‘L’ Voltage (*4) VPWML IOUT=1mA (XC9122B/D type) - - VDD-1.0 V ①
CE "H" Current ICEH Same as IDD2, CE=VDD - - 0.1 μA ⑤
CE "L" Current ICEL Same as IDD2, CE=0V - - -0.1 μA ⑤
FB "H" Current IFBH Same as IDD2, FB=VDD - - 0.1 μA ⑤
FB "L" Current IFBL Same as IDD2, FB=0V - - -0.1 μA ⑤
Test Conditions: Unless otherwise stated, CL: ceramic, recommended MOSFET should be connected.
When V
DD of more than 1.8V is recommended when VDD is supplied from VIN or other power sources.
prevent V
operation, which in turn causes the IC’s operations to stop, the IC resumes its operation with a toggle of the CE pin or by turning the power
supply back on.
*3: EFFI: {(output voltage) x (output current)} / {(input voltage) x (input current)} x 100
*4: The XC9122 series’ CE pin combines PWM/PFM external switch pin. In the operation state, PWM control becomes effective when the CE
pin is more than V
effective with 32% duty.
LMT being reached under low temperature conditions as well as normal operating conditions. Following current limiter circuit
DD-0.2V. When the CE pin is less than VDD-1.0V and more than VCEH, PWM/PFM automatic switching control becomes
FB 0.882 0.900 0.918 V ④
VDD 1.8 - 6.0 V ①
Recommended circuit using 2SD1628,
V
OUTSET
VIN=VOUTSET×0.6, VDD=3.0V,
I
OUT=1.0mA
Recommended circuit using 2SD1628
VOUT=3.3V, IOUT=1.0mA
No external components,
V
ST2
CE connected to VDD, Voltage applied,
FB=0V
Recommended circuit using 2SD1628
VOUT=3.3V, IOUT=1.0mA
PFMDTY No Load (XC9121B/D, XC9122B/D types) 24 32 40 % ⑥
Step input to FB
VLMT
(Pulse width: 2.0μs or more)
EXT= Low level voltage
(XC9120/9122/9122B type)
OUT is set at 15V, VIN=VDD=3.6V.
DD=0.8V, the output voltage and oscillation frequency are stabilized at VDD>1.8V.
Series
f
=100kHz) Ta= 25 ℃
CIRCUIT
1.5 - 30.0 V ②
- - 0.9 V ③
- - 0.8 V ④
- - 0.7 V ③
150 250 400 mV ⑥
4/17
■ TYPICAL APPLICATION CIRCUIT
CFB
RFB2
SD
Nch Power
MOS FET
43
DD between the VDD
IN as close as to the VOUT and VDD
VOUT
RSENSE
RFB1
15
CL
2
CE
When obtaining VDD from a source other than VIN (VOUT),
please insert a by-pass capacitor C
pin and the GND pin in order to provide stable operations.
Please place CL and C
pins respectively and also close to the GND pin.
Strengthen the wiring sufficiently.
R
SENSE should be removed and shorted when the CL
capacitor except for ceramic or low ESR capacitor is
used.
CIN
VIN
XC9120/XC9121/XC9122
Insert R
NPN transistor.
B and CB when using a bipolar
Series
RB
CB
NPM Tr
5/17
XC9120/XC9121/XC9122
■ OPERATIONAL EXPLANATION
The XC9120/9121/9122 series consists of a reference voltage source, ramp wave circuit, error amplifier, PWM comparator,
phase compensation circuit, and current limiter circuit. The series ICs compare, using the error amplifier, the voltage of the
internal voltage reference source with the feedback voltage from the FB pin. Phase compensation is performed on the
resulting error amplifier output, to input a signal to the PWM comparator to determine the turn-on time during PWM operation.
The PWM comparator compares, in terms of voltage level, the signal from the error amplifier with the ramp wave from the
ramp wave circuit, and delivers the resulting output to the buffer driver circuit to cause the EXT pin to output a switching duty
cycle. This process is continuously performed to ensure stable output voltage.
<Error Amp.>
Error amplifier is designed to monitor the output voltage, comparing the feedback voltage (FB) with the reference voltage
Vref. In response to feedback of a voltage lower than the reference voltage Vref, the output voltage of the error amp.
decreases.
<OSC Generator>
The circuit generates the internal reference clock. The frequency is set to 100kHz (TYP.).
<Ramp Wave Generator>
The ramp wave generator generates a saw-tooth waveform based on outputs from the OSC Generator.
<PWM Comparator>
The PWM comparator compares outputs from the error amp. and saw-tooth waveform. When the voltage from the error
amp’s output is low, the external switch will be set to ON.
<PWM/PFN Comparator>
The circuit generates PFM pulses.
The XC9122 series can switch PWM control and PWM/PFM switching control by external signal. The PWM/PFM automatic
switching control becomes effective when the voltage of the CE pin is less than V
PWM and PFM automatically depending on the load. The PWM/PFM control turns into the PFM control when threshold
voltage becomes lower then voltage of error amps. The PWM control becomes effective when the CE pin voltage is more
than V
DD-0.2V. Noise is easily reduced with the PWM control since the switching frequency is fixed. Because of this, the
series gives the best control suitable for your application.
<Vref with Soft Start>
The reference voltage, Vref (FB pin voltage) =0.9V, is adjusted and fixed by laser trimming (for output voltage settings, please
refer to the output voltage setting.). Soft-start circuit protects against inrush current, when the power is switched on, and
also protects against voltage overshoot. It should be noted, however, that this circuit does not protect the load capacitor (C
form inrush current. With the Vref voltage limited and depending on the input to the error amps, the operation maintains a
balance between the two inputs of the error amps and controls the EXT pin’s ON time so that it does not increase more than
is necessary.
<Enable Function>
The function controls the operation and shutdown of the IC. When the voltage of the CE pin is 0.2V or less, the mode will be
disable, the channel’s operations will stop and the EXT pin will be kept at a low level (the external N-ch MOSFET will be
OFF). When the IC is in a state of disable, current consumption will be no more than 1.0μA. When the CE pin’s voltage is
0.65V or more, the mode will be enabled and operations will recommence.
<Current Limiter Circuit>
The current limiter circuit of the XC9120 series is designed to monitor a ripple output voltage. Following current limiter
circuit operation, which in turn causes the IC’s operations to stop, the IC resumes its operation with a toggle of the CE pin or
by turning the power supply back on.
Series
DD-1.0V, and the control switches between
6/17
L)
XC9120/XC9121/XC9122
■ OPERATIONAL EXPLANATION (Continued)
<Output Voltage Setting>
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based
on the values of R
VOUT = 0.9 x (RFB1 + RFB2) / RFB2
The value of CFB1, speed-up capacitor for phase compensation, should result in fzfb = 1/(2×π×C
15kHz. Adjustments are required between 5kHz to 30kHz depending on the application, value of inductance (L), and value
of load capacitance (CL).
ex.) Output Voltage Setting
VOUT
(V)
30.0
25.0
20.0
18.0
<The Use of Ceramic Capacitor CL>
The circuit of the XC9120 series is organized by a specialized circuit, which reenacts negative feedback of both voltage and
current. Also by insertion of approximately 50mΩ of a low and inexpensive sense resistor as current sense, a high degree
of stability is possible even using a ceramic capacitor, a condition which used to be difficult to achieve. Compared to a
tantalum condenser, because the series can be operated in a very small capacity, it is suited to use of the ceramic capacitor,
which is cheap and small.
<External Components>
Tr
:
*When a MOSFET is used
XP161A1355PR (N-Channel Power MOSFET, TOREX)
Note: As the breakdown voltage of XP161A1355PR is 20V,
VST1: XP161A1355PR=1.2V (MAX.)
SD
L, C
:
XBS104S14R-G (Schottky Barrier Diode, TOREX)
L : Please set up as follows according to an operating condition
or external components.
L
L
C
:
47μH (CDRH5D28, SUMIDA)
:
22μH (CDRH5D28, SUMIDA)
:
25V, 10μF (Ceramic type, TMK316BJ106KL, TAIYO YUDEN)
:
10V, 10μF (Ceramic type, LMK325BJ106ML, TAIYO YUDEN)
C
RSENSE : 50mΩ (f
C
L
CL
L
:
Tantalum Type
:
47μH (CDRH5D28, SUMIDA)
:
22μH (CDRH5D28, SUMIDA)
:
25V, 47μF (Tantalum type, TAJ series, KYOCERA)
:
16V, 47μF (Tantalum type, TAJ series, KYOCERA)
Strengthen appropriately when step-up ratio and output current is
large.
C
RSENSE : Not required, but short out the wire.
FB1 and RFB2. The sum of RFB1 and RFB2 should normally be 2MΩ.
RFB1
(kΩ)
390 12 27
270 10 39
470 22 22
510 27 18
RFB2
(kΩ)
CFB
(pF)
VOUT
(V)
15.0
10.0
7.0
3.3
RFB1
(kΩ)
470 30 22
150 15 68
150 22 68
150 56 68
take care with the output voltage. With output
voltages over 17V, use the XP161A11A1PR with a
breakdown voltage of 30V.
XP161A11A1PR=2.5V (MAX.)
Use the formula below when step-up ratio and output current is
large.
L = (CL standard value) x (IOUT (mA) / 100mA x VOUT / VIN)
= 100kHz)
OSC
L = (CL standard value) x (IOUT (mA) / 100mA x VOUT / VIN)
FB×RFB1) equal to
RFB2
(kΩ)
CFB
(pF)
*When a NPN Transistor is used:
2SD1628 (SANYO)
RB
: 500Ω(Adjust with Tr’s HSE or load)
: 2200pF (Ceramic type)
CB
C
B<1 / (2
π
x RB x f
OSC
x 0.7)
Series
7/17
XC9120/XC9121/XC9122
■ TEST CIRCUITS
Circuit ①
Circuit ②
V
IN
Circuit ③
V
IN
L
A
Tr
C
IN
L
A
Tr
C
IN
OSC
C
B
RB
OSC
C
B
RB
EXT
CE
EXT
CE
SD
GND
SD
GND
R
C
FB
V
DD
FB
C
FB
V
DD
FB
SENSE
R
SENSE
Series
A
R
FB1
R
FB2
R
FB1
R
FB2
Circuit ④
Circuit ⑤
V
GND
DD
FB
AA
A
EXT
CE
CE
A
C
L
V
R
L
Circuit ⑥
Pulse voltage is applied at the FB pin
using the test circuit ①.
A
C
L
V
R
L
CE
EXT
GND
V
DD
FB
CFB
RFB1
0.1uF
RFB2
8/17
)
V
)
XC9120/XC9121/XC9122
Series
■TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
16.0
15.5
15.0
14.5
Output Voltage: VOUT(V)
14.0
(2) Efficiency vs. Output Current
Efficiency: EFFI(%
(3) Output Voltage vs. Ambient Temperature
16.0
(V)
OUT
Output Voltage: V
15.5
15.0
14.5
14.0
XC9122D091 (100kHz, 15.0V)
L=47uH(CDRH5D28),SD:XBS104S14R
CL= 40uF( Cer amic) ,Tr :161A11A1
3.2V, 3. 6V, 4.2V
VIN =2.7V
0.1 1 10 100
Output Current: IOUT(mA)
XC9122D091 (100kHz , 15.0V )
L=47uH (CDRH5D28),SD:XBS104S14R
100
80
60
40
PWM/PF M
CL= 40uF( Cer amic) ,Tr :161A11A1
VIN =2.7V
3.2V
PWM
20
0
0.1 1 10 100
Output Current: IOUT(mA)
XC9122D091 (100kHz)
L=22uH(CDRH5D28),SD:XBS104S14R
CL= 20uF( Cer amic) ,Tr :XP161A1355PR
VIN =3.6V
IOU T=10mA
-40-20 0 204060 80100
Ambient Temperature :Ta(oC)
4.2V
XC9122D091 (100kHz, 20.0V)
L=47uH(CDRH5D28),SD:XBS104S14R
21.0
20.5
CL= 40uF( Cer amic) ,Tr :161A11A1
3.6V,4.2V
20.0
VIN =2.7V
3.2V
19.5
Output Voltage: VOUT(V)
19.0
0.1 1 10 100
Output Current: IOUT(mA)
XC9122D091 (100kHz , 20.0V )
L=47uH(CDRH5D28),SD:XBS104S14R
100
80
PWM/PFM
60
3.6
CL= 40uF( Cer amic) ,Tr :161A11A1
4.2V
VIN =2.7V
3.2V
3.6V
40
Efficiency: EFFI(%
20
PWM
0
0.1 1 10 100
Output Current: IOUT(mA)
(4) Supply Current 1 vs. Supply Voltage
XC9122D091 (100kHz )
100
80
(uA)
DD1
60
40
20
Supply Current1: I
0
1234 56
Pow er Supply V
Ta=25
o
C
85oC
o
-40
C
(V)
DD
9/17
:
)
XC9120/XC9121/XC9122
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(5) Supply Current 2 vs. Supply Voltage
XC9122D091 (100kHz)
(6) Stand-by Current vs. Supply Voltage
XC9122D091 (100kHz)
(uA)
DD2
Supply Current2: I
50
40
30
20
10
Ta=25
o
C
85oC
o
-40
C
0
123456
Pow er Supply: V
Supply Voltage: VDD (V) Supply Voltage: VDD (V)
DD
(V)
）
uA
（
STB
Standby Current: I
2.0
1.5
1.0
85oC
0.5
Ta= 25,-40oC
0.0
123456
Pow er Supply: VDD(V)
(7) Oscillation Frequency vs. Supply Voltage
XC9122D091 (100kHz)
(8) Maximum Duty Ratio vs. Supply Voltage
XC9122D091 (100kHz)
200
150
100
FOSC(kHz)
50
Os c illation Frequency :
0
123456
Ta=25oC
85oC
-40
o
C
Pow er Supply: V
Supply Voltage: VDD (V) Supply Voltage: VDD (V)
DD
(V)
100
Ta=25oC-40oC85oC
90
80
MAXDTY (%)
Maximum Duty Cycle
70
123456
Pow er Supply: V
DD
(V)
(9) Over Current Sense Voltage vs. Supply Voltage
(10) Soft-Start Time vs. Supply Voltage
XC9122B091 (100kHz)
XC9122D091 (100kHz)
Overcurrent SENSE Voltage
350
300
Ta=25
(%)
250
LMT
V
85oC
o
C
o
-40
C
200
150
123456
Pow er Supply: V
Supply Voltage: VDD (V) Supply Voltage: VDD (V)
DD
(V)
20
15
Ta=25
-40oC
o
C
10
85oC
5
Soft-start Time: Tss(ms
0
123456
Pow er Supply: VDD(V)
10/17
e
8
8
XC9120/XC9121/XC9122
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(11) CE "H" Voltage vs. Supply Voltage
XC9122D091 (100kHz)
1.0
0.8
(V)
CEH
Ta=25
o
C
0.6
0.4
0.2
CE 'H' Voltage: V
0.0
123456
Supply Voltage: VDD (V) Supply Voltage: VDD (V)
Power Supply: V
85oC
o
C
-40
(V)
DD
(13) EXT H ON Resistance vs. Supply Voltage
XC9122D091 (100kHz)
EXT 'H' ON Res istanc
(ohm)
EXTH
R
50
40
30
20
10
Ta=25
o
C
85oC
o
-40
C
0
123456
Pow er Supply: V
Supply Voltage: VDD (V)
(V)
DD
(15) Operation Start Voltage vs. Ambient Temperature
1.2
(V)
1.0
ST1
0.8
0.6
0.4
0.2
Operation Start Voltage: V
0.0
XC9122D091 (100kHz)
L=22uH (C DRH 5D28) ,SD:XB S104S14R
CL= 20uF( Cerami c), Tr:2S D162
-40-20 0 20406080100
o
Ambient Temperature :Ta(
C)
(12) CE "L" Voltage vs. Supply Voltage
XC9122D091 (100kHz)
1.0
0.8
(V)
CEL
0.6
0.4
0.2
CE 'L' Voltage: V
0.0
123456
Pow er Supply: V
Ta=25
o
C
85oC
o
C
-40
(V)
DD
(14) EXT L ON Resistance vs. Supply Voltage
XC9122D091 (100kHz)
50
40
30
(ohm)
20
EXTL
R
10
EXT 'L' ON Res istance
0
123456
Pow er Supply: V
Supply Voltage: VDD (V)
Ta=25
o
C
85oC
o
-40
C
(V)
DD
(16) Operation Hold Voltage vs. Ambient Temperature
XC9122D091 (100kHz)
L=22uH (C DRH5D28),SD:XBS104S14R
0.8
(V)
HOLD
0.6
0.4
0.2
0.0
Operation Hold Voltage: V
-40-20 0 20406080100
Ambient Temperature :Ta(
CL= 20uF( Cerami c), Tr:2S D162
o
C)
11/17
)
XC9120/XC9121/XC9122
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(17) Oscillation Start Voltage vs. Ambient Temperature
(19) PWM ‘H’ Voltage vs. Supply Voltage
PWM 'H' Voltage: VPWMH(V
0.8
0.6
0.4
0.2
0.0
Oscillation Start Voltage: VST2 (V)
VDD
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
123456
XC9122D091 (100kHz)
-40 -20 0 20 40 60 80 100
Ambient Temperature :Ta(
o
C)
XC9122D091 (100kHz)
o
Ta=25
C
Supply Voltage: VDD (V) Supply Voltage: VDD (V)
Power Supply: VDD(V)
-40
85oC
o
C
Series
PWM 'L' Voltage: VPWML(V)
(18) PFM Duty Ratio vs. Supply Voltage
XC9122D091 (100kHz)
40
35
30
25
PFMDTY(%)
20
PFM Duty Ratio
Ta=85oC
25
-40
o
o
15
10
123456
Supply Voltage: VDD (V)
Power Supply: VDD(V)
(20) PWM ‘L’ Voltage vs. Supply Voltage
XC9122D091 (100kHz)
VD D
0.0
-0.2
Ta=25
o
C
85oC
-0.4
-0.6
o
-40
C
-0.8
-1.0
123456
Power Supply: VDD(V)
C
C
12/17
XC9120/XC9121/XC9122
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(21) Load Transient Response
1ch
2ch
100uA
VIN=3.6V, IOUT=100uA→10mA
10mA
10mA
100uA
400usec/div.
1ch: VOUT, 100mV/div.
2ch: IOUT, 10mA /div.
VOUT=15V ,
VOUT
VOUT
IOU T
IOUT
1ch
2ch
VIN=3.6V, IOUT=10mA→100uA
10mA
10mA
100uA
100uA
4.0ms ec/div.
1ch: VOUT, 100mV/div.
2ch: IOUT, 10mA /div.
VOUT=15V ,
VOUT
VOUT
IOU T
IOUT
Series
13/17
XC9120/XC9121/XC9122
■ PACKAGING INFORMATION
●SOT-25
●USP-6C
Note: The side of pins are not gilded, but nickel is used.
Series
14/17
■PACKAGING INFORMATION (Continued)
XC9120/XC9121/XC9122
Series
●USP-6C Reference Pattern Layout
●USP-6C Reference Metal Mask Design
15/17
XC9120/XC9121/XC9122
■ MARKING RULE
●SOT-25
●USP-6C
①Represents product series
②Represents current limit function
MARK FUNCTION PRODUCT SERIES
B With Current Limit XC9120/9121/9122B091Mx
D Without Current Limit XC9120/9121/9122D091Mx
③Represents oscillation frequency
MARK OSCILLATION FREQUENCY PRODUCT SERIES
1 100kHz XC9120/9121/9122x091Mx
④Represents production lot number
0 to 9, A to Z, and inverted 0 to 9, A to Z repeated.
(G, I, J, O, Q, W excepted.)
①Represents product series
②Represents current limit function
MARK FUNCTION PRODUCT SERIES
B With current limit XC9120/9121/9122B091Ex
D Without current limit XC9120/9121/9122D091Ex
③④Represents FB voltage
MARK
③ ④
0 9 09 XC9120/9121/9122x091Ex
⑤Represents Oscillation Frequency
MARK OSCILLATION FREQUENCY PRODUCT SERIES
1 100kHz XC9120/9121/9122x091Ex
④Represents production lot number
0 to 9, A to Z repeated. (G, I, J, O, Q, W excepted.)
* No inversion is used.
Series
MARK PRODUCT SERIES
M
XC9120x091Mx
N
XC9121x091Mx
XC9122x091Mx
P
MARK PRODUCT SERIES
E XC9120x091Ex
F XC9121x091Ex
H XC9122x091Ex
FB VOLTAGE PRODUCT SERIES
16/17
XC9120/XC9121/XC9122
Series
1. The products and product specifications contained herein are subject to change without
notice to improve performance characteristics. Consult us, or our representatives
before use, to confirm that the information in this datasheet is up to date.
2. We assume no responsibility for any infringement of patents, patent rights, or other
rights arising from the use of any information and circuitry in this datasheet.
3. Please ensure suitable shipping controls (including fail-safe designs and aging
protection) are in force for equipment employing products listed in this datasheet.
4. The products in this datasheet are not developed, designed, or approved for use with
such equipment whose failure of malfunction can be reasonably expected to directly
endanger the life of, or cause significant injury to, the user.
(e.g. Atomic energy; aerospace; transport; combustion and associated safety
equipment thereof.)
5. Please use the products listed in this datasheet within the specified ranges.
Should you wish to use the products under conditions exceeding the specifications,
please consult us or our representatives.
6. We 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.
17/17
Loading...