XC9265 Datasheet PDF - Torex Semiconductor
Part Number | XC9265 | |
Description | Ultra Low Power Synchronous Step-Down PFM DC/DC Converter | |
Manufacturers | Torex Semiconductor | |
Logo | ||
There is a preview and XC9265 download ( pdf file ) link at the bottom of this page. Total 29 Pages |
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ETR05053-002
Ultra Low Power Synchronous Step-Down PFM DC/DC Converter
■GENERAL DESCRIPTION
☆GreenOperation Compatible
XC9265 series are Ultra Low Power synchronous-rectification type PFM step down DC/DC converters with a built-in 0.4Ω
(TYP.) Pch driver and 0.4Ω (TYP.) Nch synchronous switching transistor, designed to allow the use of ceramic capacitor.
PFM control enables a low quiescent current, making these products ideal for battery operated devices that require high
efficiency and long battery life.
Only inductor, CIN and CL capacitors are needed as external parts to make a step down DC/DC circuit.
Operation voltage range is from 2.0V to 6.0V. This product has fixed output voltage from 1.0V to 4.0V(accuracy: ±2.0%) in
increments of 0.1V.
During stand-by, all circuits are shutdown to reduce consumption to as low as 0.1μA(TYP.) or less.
With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel MOS driver transistor is forced OFF when input
voltage gets lower than UVLO detection voltage. Besides, XC9265 series has UVLO release voltage of 1.8V (Typ.).
The product with CL discharge function can discharge CL capacitor during stand-by mode due to the internal resistance by turning
on the internal switch between VOUT -GND. This enables output voltage restored to GND level fast.
■APPLICATIONS
■FEATURES
● Wearable Devices
● Smart meters
Input Voltage Range
Output Voltage Setting
Output Current
: 2.0V~6.0V
: 1.0V~4.0V (±2.0%, 0.1V step increments)
: 200mA(XC9265A/C)
● Bluetooth units
50mA(XC9265B/D)
● Energy Harvest devices
● Back up power supply circuits
● Portable game consoles
Driver Transistor
Supply Current
Control Method
: 0.4Ω (Pch Driver Tr)
0.4Ω (Nch Synchronous rectifier Switch Tr)
: 0.50μA @ VOUT(T)=1.8V (TYP.)
: PFM control
● Devices with 1 Lithium cell
High Speed Transient
PFM Switching Current
: 50mV (VIN=3.6V, VOUT=1.8V, IOUT=10μA→50mA)
: 330mA(XC9265A/C), 180mA(XC9265B/D)
Function
: Short Protection
CL Discharge(XC9265C/ D)
UVLO
Ceramic Capacitor Compatible
Operation Ambient Temperature : -40~+85℃
Package
: SOT-25, USP-6EL
Environmentally Friendly : EU RoHS compliant, Pb Free
■TYPICAL APPLICATION CIRCUIT
VIN
CIN
(Ceramic)
VIN LX
CE VOUT
GND
L
VOUT
CL
(Ceramic)
■ TYPICAL PERFORMANCE
CHARACTERISTICS
●Efficiency vs. Output Current
XC9265B181xR-G(VOUT=1.8V)
L=10μH(VLF302512M-100M),CIN=10μF(LMK107BJ106MA),
CL=22μF(JMK107BJ226MA)
100
80
VIN=4.2V
60 VIN=3.6V
40 VIN=2.7V
20
0
0.01
0.1 1 10
Output Current : IOUT (mA)
100
1/29
|
|
XC9265
Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XC9265Bxx1 Type, without CL discharge function
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
Ta=25˚C
UNITS CIRCUIT
Input Voltage
VIN -
2.0 - 6.0 V
①
Output Voltage
UVLO Release Voltage
UVLO Hysteresis Voltage
Supply Current
V (*2)
OUT(E)
VUVLO(E)
VHYS(E)
Iq
Resistor connected with LX pin.
Voltage which LX pin changes “L” to “H” level
while VOUT is decreasing.
VCE=VIN, VOUT=0V. Resistor connected with LX pin.
Voltage which LX pin changes “L” to “H” level
while VIN is increasing.
VCE=VIN, VOUT=0V. Resistor connected with LX pin.
VUVLO(E) - Voltage which LX pin changes “H” to “L”
level while VIN is decreasing.
VIN=VCE=VOUT(T)+0.5V (*1),
VIN=2.0V, if VOUT(T)≦1.5V (*1),
VOUT=VOUT(T)+0.5V (*1), LX=Open.
1.65
0.11
E1
1.8
0.15
E2
1.95
0.24
V
V
V
μA
②
②
②
③
Standby Current
ISTB VIN=5.0V, VCE=VOUT=0V, LX=Open.
- 0.1 1.0 μA
③
LX SW “H” Leak Current
ILEAKH
VIN=5.0V, VCE=VOUT=0V, VLX=0V.
- 0.1 1.0 μA
③
LX SW “L” Leak Current
ILEAKL
VIN=5.0V, VCE=VOUT=0V, VLX=5.0V.
- 0.1 1.0 μA
③
PFM Switching Current
IPFM
VIN=VCE=VOUT(T)+2.0V (*1), IOUT=10mA.
115 180 250 mA
①
Maximum Duty Ratio (*3)
Efficiency (*4)
Efficiency (*4)
Efficiency (*4)
LX SW “Pch”
ON Resistance (*5)
MAXDTY
EFFI
EFFI
EFFI
RLXP
VIN=VOUT=VOUT(T)×0.95V(*1), VCE=1.2V
Resistor connected with LX pin.
VIN=VCE=5.0V,
VOUT(T)=4.0V (*1), IOUT=30mA.
VIN=VCE=3.6V,
VOUT(T)=3.3V (*1), IOUT=30mA.
VIN=VCE=3.6V,
VOUT(T)=1.8V (*1), IOUT=30mA.
VIN=VCE=5.0V, VOUT=0V, ILX=100mA.
100 -
-%
- 95 - %
- 95 - %
- 89 - %
-
0.4 0.65
Ω
②
①
①
①
④
LX SW “Nch”
ON Resistance
RLXN
VIN=VCE=5.0V.
- 0.4 (*6) -
Ω
-
Output Voltage
Temperature
Characteristics
ΔVOUT/
(VOUT・ΔTopr)
-40℃≦Topr≦85℃.
- ±100 - ppm/℃ ②
CE “High” Voltage
CE “Low” Voltage
CE “High” Current
VCEH
VCEL
ICEH
VOUT=0V. Resistor connected with LX pin.
Voltage which LX pin changes “L” to “H” level while
VCE=0.2→1.5V.
VOUT=0V. Resistor connected with LX pin.
Voltage which LX pin changes “H” to “L” level while
VCE=1.5→0.2V.
VIN=VCE=5.0V, VOUT=0V, LX=Open.
1.2
GND
-0.1
-
-
-
6.0 V
0.3 V
0.1 μA
⑤
⑤
⑤
CE “Low” Current
Short Protection
Threshold Voltage
ICEL VIN=5.0V, VCE=VOUT=0V, LX=Open.
-0.1 - 0.1 μA
Resistor connected with LX pin.
VSHORT
Voltage which LX pin changes “H” to “L” level while
0.4
0.5
0.6
V
VOUT= VOUT(T)+0.1V→0V(*1).
⑤
②
Unless otherwise stated, VIN=VCE=5.0V
(*1) VOUT(T)=Nominal Output Voltage
(*2) VOUT(E)=Effective Output Voltage
The actual output voltage value VOUT(E) is the PFM comparator threshold voltage in the IC.
Therefore, the DC/DC circuit output voltage, including the peripheral components, is boosted by the ripple voltage average value.
Please refer to the characteristic example.
(*3) Not applicable to the products with VOUT(T) < 2.2V since it is out of operational volatge range.
(*4) EFFI=[{ (Output Voltage)×(Output Current)] / [(Input Voltage)×(Input Current)}]×100
(*5) LX SW “Pch” ON resistance = (VIN – VLX pin measurement voltage) / 100mA
(*6) Designed value
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for XC9265 electronic component. |
Information | Total 29 Pages | |
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Download | [ XC9265.PDF Datasheet ] |
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