XC9306B05G0R-G Datasheet, PDF (1/14 Pages) Torex Semiconductor – Synchronous Rectification Buck-Boost DC/DC Converter IC

XC9306B05G0R-G
ETR06003-002
Synchronous Rectification Buck-Boost DC/DC Converter IC
☆GreenOperation Compatible
■GENERAL DESCRIPTION
The XC9306B05G0R-G is a synchronous buck-boost DC/DC converter IC with built-in FETs. The circuit topology switches
over between buck and boost smoothly based on the relationship of the input voltage and the output voltage which is observed
by the internal PWM controller. Due to the internal FETs, the number of external components is reduced. Also, a 6MHz
switching frequency enables smaller external components, such as a coil and capacitors, to be used. The input voltage range
is 2.5V~5.5V and the output voltage is adjustable from 0.8V to 5.0V by using external resistors since the reference voltage
circuit is embedded internally. Synchronous topology provides high efficiency performance and the control method is
selectable from either PWM mode (MODE pin: H) or PFM mode (MODE pin: L). Under PFM mode, the efficiency at light load
current will be improved. When a “L” signal level is fed to the CE pin, the product is in stand-by mode and the consumption
current is going to be 2.0uA (Max.) or less. Regarding other functions, the product has UVLO, thermal shutdown protection and
soft-start. The soft-start time is approx. 100us and the output voltage can rise up quickly.
■APPLICATIONS
● RF Power Amplifiers
● Mobile Phones, Smart Phones
● Portable Information Devices
● MP3 Players
● Digital Still Cameras
● Products powered by Li-ion 1 cell batteries
■FEATURES
Input Voltage Range
Output Voltage Setting Range
Oscillation Frequency
Efficiency
Control Methods
Protection Circuit
Function
Output Capacitor
Coil Value
Package
Environmentally Friendly
: 2.5V～5.5V
: 0.8V～5.0V (FB=0.5V)
: 6.0MHz
: 92%(VIN=4.2V, VOUT=3.3V/300mA)
: PWM (Mode=High, ILIM=Low)
: Current Limit
Thermal Shutdown
: Soft-start
Power Save (Mode=Low)
UVLO
: Ceramic Capacitor Compatible
: 0.5 (0.47) μH
: WLP-20-01
: EU RoHS Compliant, Pb Free
■TYPICAL APPLICATION CIRCUIT ■ TYPICAL PERFORMANCE
CHARACTERISTICS
XC9306B05G0R-G Vout=3.3V
100
PFM
80
60
V_IN=2.5V
40
4.2V
20
PWM
0
0.1
1
10
100
Output Current : I_OUT [mA]
1000
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