LR8301 Datasheet, PDF (4/9 Pages) Leshan Radio Company – SMALL PACKAGE PFM CONTROL STEP-UP DC/DC CONVERTER

LESHAN RADIO COMPANY, LTD.
LR8301 Series
Electrical Characteristics
(Unless otherwise specified, Ta =25　C)
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
Output voltage
Input voltage
Operation start voltage
Oscillation start voltage
Current consumption 1
Current consumption 2
Current consumption
during
shutdown
Switching current
Switching transistor
leakage current
Line regulation
Load regulation
Maximum Oscillation
frequency
Duty ratio 1
Duty ratio 2
Efficiency
Shutdown pin input
voltage
V_OUT
V_IN
V_ST1
V_ST2
I_SS1
I_SS2
－
－
I_OUT= 1 mA
No external parts, voltage
applied to V_OUT LX pulled up
to V_OUT via 300 resistor
V_OUT=0.95 V_OUT：3.0V
×V_OUT
V_OUT：5.0V
V_OUT=V_OUT＋0.5 V
V_OUT(S)
×0.98
－
－
－
－
－
I_SSS
V_EN = 0 V
－
I_SW
I_SWQ
∆V_OUT1
∆V_OUT2
f_OSC
Duty1
Duty2
EFFI
V_SH
V_SL1
V_LX= 0.4 V
No external parts,
VLX＝VOUT =10 V ,VEN = 0 V
V_IN= 0.4×V_OUT～
0.6×V_OUT
I_OUT= 10 µA ~ 50mA
V_OUT= 0.95×V_OUT， measure
waveform at LX pin
V_OUT= 0.95×V_OUT，
measure waveform at
LX pin
Measure waveform at
LX pin with light load
V_OUT=0.95×V_OUT， judge
oscillation at LX pin
V_OUT= 0.95×V_OUT，
judge stop at LX pin
100
－
－
－
70
－
0.75
－
V_OUT
V_OUT(S)
×1.02
V
－
10
V
－
0.9
V
－
0.8
V
30
40
µA
50
60
µA
6
10
µA
－
0.5 µA
200
－ mA
－
0.5 µA
20
50 mV
20
50 mV
100
kHz
78
85
%
66
－
%
85
%
－
－
V
－
0.3
V
Shutdown pin input
I_SH
V_EN＝10V
－0.1
－
0.1 µA
current
I_SL
V_EN＝0V
－0.1
－
0.1 µA
Remark： VIN =VOUT(S) ×0.6 applied, IOUT=VOUT(S) / 250 Ω
Shutdown function built-in type: EN pin is connected to VOUT
V_OUT(S) specified above is the set output voltage value, and V_OUT is the typical value of the actual
output voltage.
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