ST5R00 Просмотр технического описания (PDF) - STMicroelectronics
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ST5R00 Datasheet PDF : 15 Pages
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ST5R00 SERIES
Figure 5: Typical Demoboard
Note: drawing not in scale.
Table 4: Electrical Characteristics For ST5R25
(VIN = 1.5V, IOUT = 10mA, TA = 25°C, unless otherwise specified. For external components value, unless
otherwise notes, refer to the typical operating circuit.)
Symbol
Parameter
Test Conditions
Min.
VOUT Output Voltage
VSTART-UP Start-up Voltage (VIN-VF) (1)
VHOLD Hold-on Voltage
ISUPPLY Supply Current
RLX(DSON) Internal Switch RDSON
ILX(leak) Internal Leakage Current
fOSC Maximum oscillator Frequency
Dty Oscillator Duty Cycle
ν
Efficiency
IOUT = 1mA, VIN = rising from 0 to 2V
IOUT = 1mA, VIN = falling from 2 to 0V
To be measured at VIN, no load
ILX = 150mA
VLX = 4V, forced VOUT = 3V
to be measure on LX pin
IOUT = 50mA
2.375
0.6
Typ.
2.5
0.8
16
850
150
77
82
Max.
2.625
1.2
0.5
Unit
V
V
V
µA
mΩ
µA
KHz
%
%
(1): The minimum input voltage for the IC start-up is strictly a function of the VF catch diode.
Table 5: Electrical Characteristics For ST5R28
(VIN = 1.7V, IOUT = 10mA, TA = 25°C, unless otherwise specified. For external components value, unless
otherwise notes, refer to the typical operating circuit.)
Symbol
Parameter
Test Conditions
VOUT Output Voltage
VSTART-UP Start-up Voltage (VIN-VF) (1)
VHOLD Hold-on Voltage
ISUPPLY Supply Current
RLX(DSON) Internal Switch RDSON
ILX(leak) Internal Leakage Current
fOSC Maximum oscillator Frequency
Dty Oscillator Duty Cycle
ν
Efficiency
IOUT = 1mA, VIN = rising from 0 to 2V
IOUT = 1mA, VIN = falling from 2 to 0V
To be measured at VIN, no load
ILX = 150mA
VLX = 4V, forced VOUT = 3.3V
to be measure on LX pin
IOUT = 50mA
Min.
2.66
0.6
(1): The minimum input voltage for the IC start-up is strictly a function of the VF catch diode.
Typ.
2.8
0.8
16
850
150
77
82
Max.
2.94
1.2
0.5
Unit
V
V
V
µA
mΩ
µA
KHz
%
%
4/15
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