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| UM3510 Datasheet, PDF (3/10 Pages) Union Semiconductor, Inc. – 1.0A, 1.5MHz, Synchronous Step-Down DC-DC Converter | |||
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UM3510
Electrical Characteristics (Note 2)
(VIN=VRUN=3.6V, TA=+25â, unless otherwise noted)
Symbol
Parameter
Test Conditions
Min
Typ
Max Unit
VIN
Input Voltage Range
2.5
5.5
V
IQ
(Active)
Input DC Supply
Current
(Active Mode)
VFB=0.5Vor
VOUT=90%
200
300
μA
IQ
(Shutdown)
Input DC Supply
Current
(Shutdown Mode)
VFB=0V, VIN=4.2V
0.08
1.0
μA
TA= +25ºC
0.5880
0.6000 0.6120
VFB
Regulated Feedback
Voltage
0ºC â¤TA ⤠85ºC
0.5865
0.6000 0.6135
V
IFB
IO(Max)
f
RDS(ON)
IP
ISWL
VH
VL
VFB Input Bias
Current
Reference Voltage
Line
Regulation
Output Voltage Line
Regulation
Output Voltage Load
Regulation
Maximum Output
Current
Oscillator Frequency
RDS(ON) of P-CH
MOSFET
RDS(ON) of N-CH
MOSFET
Peak Inductor Current
SW Leakage
RUN High-Level
Threshold
RUN Low-Level
Threshold
-40ºC â¤TA ⤠85ºC
VFB=0.65V
2.5V⤠VIN ⤠5.5V
2.5V⤠VIN ⤠5.5V,
IOUT=10mA
100mAâ¤IOUTâ¤1.0A
VIN=3.6V,
VOUT=1.8V
VFB=0.6V or
VOUT=100%
VIN =3.6V,
ISW=100mA
VIN =3.6,
ISW= -100mA
VIN=3.0V,
VFB=0.5V or
VOUT=90%,
Duty Cycle<35%
VRUN=0V,
VSW=0V or 5V
VIN=5V
-40ºC â¤TA ⤠85ºC
-40ºC â¤TA ⤠85ºC
0.5850
1.0
1.2
1.0
0.6000 0.6150
±30
nA
0.11
0.40
%/V
0.11
0.002
1.5
0.40
0.35
0.40
%/V
%/mA
A
1.8
MHz
0.50
â¦
0.45
â¦
1.60
A
±0.01
±1
μA
V
0.4
V
IRUNL
RUN Leakage Current
±0.1
±1
μA
η(MAX)
Max. Efficiency
VIN=2.7V,
VOUT=2.5V
90
%
Thermal Shutdown
Temp
160
ºC
Note2: 100% production test at +25ºC. Specifications over the temperature range are guaranteed
by design and characterization.
________________________________________________________________________
http://www.union-ic.com Rev.02 Dec.2011
3/10
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