ELM95xxD
CMOS PWM step-up DC/DC converter
■Pin configuration
SOT-89 (TOP VIEW)
Pin No.
1
2
3
Pin name
VSS
VOUT
LX
■Standard circuit
■Block diagram
■Electrical characteristics
Vout=2.7V (ELM9527D)
Parameter
Input voltage
Starting voltage
Holding voltage
Current consumption
Output voltage
Output current of LX pin
Leakage current of LX pin
Oscillating frequency
Maximum duty ratio
L=220μH, D=MA721, C=47μF, Vss=0V, Top=25°C
Symbol
Condition
Min. Typ. Max. Unit
Vin
10
V
Vst RL=27kΩ
0.98
V
Vhold Iout=1mA
0.7
V
Iss Vin=1.5V
9.0
18.0
μA
Vout Iout=1mA, Vin=1.5V
2.63 2.70
2.77
V
Ilx Vout=2.6V, Vlx=0.4V
70
mA
Ilxl Vout=Vlx=10V
1.0
μA
Fosc Vout=2.6V
35
55
75
kHz
Duty Vout=2.6V
45
60
75
%
L=220μH, D=MA721, C=47μF, Vss=0V, Top=25°C
Condition
Min. Typ. Max. Unit
10
V
RL=30kΩ
0.98
V
Iout=1mA
0.7
V
Vin=1.5V
12.0 20.0
μA
Iout=1mA, Vin=1.5V
2.92
3.00 3.08
V
Vout=2.9V, Vlx=0.4V
80
mA
Vout=Vlx=10V
1.0
μA
Vout=2.9V
35
55
75
kHz
Vout=2.9V
45
60
75
%
Vout=3.0V (ELM9530D)
Parameter
Input voltage
Starting voltage
Holding voltage
Current consumption
Output voltage
Output current of LX pin
Leakage current of LX pin
Oscillating frequency
Maximum duty ratio
Symbol
Vin
Vst
Vhold
Iss
Vout
Ilx
Ilxl
Fosc
Duty
5- 2
ELM-TECH [ ELM Technology Corporation ]
