ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter
Vce=Vout, L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C
Condition Min. Typ. Max. Unit Note
Vout=5.0V (ELM92502x)
Parameter
Input voltage
Starting voltage
Output voltage1
Symbol
Vin
7
0.9
V
V
V
Vst No-load
Vout1 Iout=60mA, Vin=3V
1
1
4.875 5.000 5.125
Vout1 Vout1 Vout1
×1.005 ×1.010 ×1.020
Output voltage2
Vout2 Iout=0.1mA, Vin=3V
V
1
Current consumption1
Current consumption2
Current consumption
in Shutdown
Oscillating frequency
Duty ratio
Iss1 Vout=Vout(T)×0.95
Iss2 Vout=Vout(T)+0.5V
550
90
880
145
μA
μA
2
2
Isd Vout=Vout(T)×0.95, Vce=0
0.5
μA
2
Fosc Vout=Vout(T)×0.95
Duty Vout=Vout(T)×0.95
510
80
600
88
690
95
kHz
%
3
3
Frequency of
Fimt
12
17
kHz
3
Intermittent control
On-resistance of LX switch
Leakage current of LX switch
CE Input voltage "H"
CE Input voltage "L"
Ron Vout=Vout(T)×0.95
Ilxl Vout=Vlx=7V
Vceh
Vcel
220
300
1
mΩ
μA
V
4
5
6
6
0.8
0.25
0.1
V
Vout=Vout(T)×0.95,
CE Input current "H"
Iceh
μA
μA
6
6
Vce=Vout(T)×0.95
CE Input current "L"
Icel Vout=Vout(T)×0.95, Vce=0
-0.1
Vout : input voltage to VOUT pin
Vce : input voltage to CE pin
Vout(T) : typical value of Vout1
Remarks : test circuit No
*
*
*
*
■Test circuits
1. Vout1, Vout2, Vst
2. Iss1, Iss2, Isd
ᎈ
᎐ᎺᎺ፸፳፧᎐ᎺᎺ፹
፹፵፹ᕈᎍ
᎓
᎖
ᎊᎌ
᎖
ᎌ᎓᎔ᎀ፹ᎿᎿᎿᎿ
ᎰᎵ
ᎰᎵ
፲
፲
ᎊᎌ
᎙᎓
ᎌ᎓᎔ᎀ፹ᎿᎿᎿᎿ
፸፷፻
᎐ᎋ
3. Fosc, Duty, Fimt (LX pin)
᎖
ᎊᎌ
፺፺፷ᔵ
ᎰᎵ
᎓
ᎌ᎓᎔ᎀ፹ᎿᎿᎿᎿ
፸፷፻
Fosc Duty : Vin=Vout(T)×0.95
,
Fimt : Vin=Vout1(1.005 to 1.020)
*
*
15 - 7
ELM-TECH [ ELM Technology Corporation ]
