900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Torex

XC9272 Datasheet Preview

XC9272 Datasheet

Ultra Low Quiescent Current Synchronous Step-Down PFM DC/DC Converter

No Preview Available !

XC9272 Series
ETR05057-003
Ultra Low Quiescent Current Synchronous Step-Down PFM DC/DC Converter for Low Output Voltage
GENERAL DESCRIPTION
GreenOperation compatible
XC9272 series are Ultra Low Quiescent Current synchronous-rectification for Low Output Voltage type PFM step down
DC/DC converters with a built-in 0.(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 0.6V to 0.95V(accuracy: ±20mV) in
increments of 0.05V.
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, XC9272 series has UVLO release voltage of 1.8V (Typ.).
The product with CL discharge function, XC9272B type, 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
Electric devices with GPS
Wearable devices
Energy Harvest devices
Backup power supply circuits
Devices with 1 Lithium cell
FEATURES
Input Voltage Range
Output Voltage Setting
Output Current
Driver Transistor
Supply Current
Control Method
: 2.0V~6.0V
: 0.6V~0.95V (±20mV, 0.05V step increments)
: 50mA
: 0.4Ω (Pch Driver Tr)
0.4Ω (Nch Synchronous rectifier Switch Tr)
: 0.50μA @ VOUT(T)=0.7V (TYP.)
: PFM control
High Speed Transient
PFM Switching Current
: 50mV (VIN=3.6V, VOUT=0.7V, IOUT=10μA→50mA)
: 180mA
Function
: Short Protection function
CL Discharge(XC9272B type)
UVLO function
Ceramic Capacitor Compatible
Operation Ambient Temperature : -40+85
Package
: SOT-25, USP-6EL
Environmentally Friendly : EU RoHS compliant, Pb Free
TYPICAL APPLICATION CIRCUIT
TYPICAL PERFORMANCE
CHARACTERISTICS
Efficiency vs. Output Current
L
VIN
VIN LX
VOUT
XC9272A071xR-G(VOUT=0.7V)
L= 10μ H( VLF302512M - 100M ) ,CIN = 10μ F( LM K107 BJ10 6M A) ,
CL=22μF(JMK107BJ226MA)
100
VIN=2.0V
80
CIN
(Ceramic)
CE VOUT
GND
CL
(Ceramic)
60
VIN=3.6V
40
20
0
0.01
0.1 1 10
Output Current : IOUT (mA)
100
1/24




Torex

XC9272 Datasheet Preview

XC9272 Datasheet

Ultra Low Quiescent Current Synchronous Step-Down PFM DC/DC Converter

No Preview Available !

XC9272 Series
BLOCK DIAGRAM
XC9272A Type
VOUT
CE
VIN
PFM Comparator Unit
CFB RFB1
RFB2
PFM
Comparator
FB -
+
CE Controller Logic
VDD
UVLO
VIN start up
Controller
VREF
Short
protection
PFM
Controller
Current
Sense
Synch
Buffer
Driver
* Diodes inside the circuit are an ESD protection diode and a parasitic diode.
LX
GND
XC9272B Type
VOUT
CE
VIN
PFM Comparator Unit
CFB RFB1
CL
Discharge
RFB2
PFM
Comparator
FB -
+
CE Controller Logic
VDD
UVLO
VIN start up
Controller
VREF
Short
protection
PFM
Controller
Current
Sense
Synch
Buffer
Driver
* Diodes inside the circuit are an ESD protection diode and a parasitic diode.
LX
GND
2/24


Part Number XC9272
Description Ultra Low Quiescent Current Synchronous Step-Down PFM DC/DC Converter
Maker Torex
Total Page 25 Pages
PDF Download

XC9272 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 XC9270 30V Driver Transistor Built-In Step-Down DC/DC Converters
Torex
2 XC9271 30V Driver Transistor Built-In Step-Down DC/DC Converters
Torex
3 XC9272 Ultra Low Quiescent Current Synchronous Step-Down PFM DC/DC Converter
Torex





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy