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®
RCR2562
PFM Step-up DC/DC Converter
z Features
• Low Start-up Voltage, 1.1V at 1mA
• Minimal Number of External Components ( Only an Inductor,
a Diode, a MOSFET and two Capacitors )
•Adjustable version ( VREF = 1.25V VREF = 2.7V or VREF = 3.3V )
• Ultra Low Input Current ( 12μA at Switch Off )
• ±2% High Output Voltage Accuracy
• Low Ripple and Low Noise
• 75% Efficiency with Low Cost Inductor
• SOT23-5L Small Packages
z General Description
The RCR2562 Series are PFM Step-up DC/DC ICs with ultra
low supply current by CMOS process and suitable for use with
battery-powered instruments.
Consists of an oscillator, a PFM control circuit, a driver Pin
EXT to external MOSFET, a reference voltage unit, an error
amplifier. A low ripple and high efficiency step-up DC/DC
converter can be constructed of this RCR2562 IC with only six
external components.
The RCR2562 works on ultra low start-up voltage, typically
max start-up voltage less than 1.1V at 1mA load current
z Applications
• Battery-powered equipment
• Cameras, Camcorders, VCRs, PDAs, pagers, electronic
data banks, and hand-held communication equipment
z Package Information
③ ②①
④⑤
Units:mm
ISPD-V3.1
1 /7
®
z Pin Configurations
Pin Port
①
②
③
④
⑤
z Functional Block Diagram
SOT23-5L
FB
VIN
NC
GND
EXT
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RCR2562
z Ordering Information
RCR2562 - □□□ □□
Package Type
SK: SOT23-5L
Reference Voltage
125= 1.25V; 270= 2.70V; 330= 3.30V
Indicate The Product Number
z Absolute Maximum Ratings
Parameter
Output Voltage
EXT Pin Voltage
EXT Pin Current ( 2 )
Power Dissipation ( TA = 25℃ )
Operating Temperature Range
Storage Temperature Range
Symbol
VOUT
VEXT
IEXT
PD
TOPR
TSTG
Ratings
-0.3 to 10
-0.3 to 10
±30
250
-40 to +125
-65 to +150
ISPD-V3.1
Unit
V
V
mA
mW
℃
℃
2 /7
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