EUP2539
Absolute Maximum Ratings (1)
IN, EN, FB to GND ------------------------------------------------------------------ -0.3V to 6V
SW to GND --------------------------------------------------------------------------- -0.3V to 40V
Power dissipation, PD@ TA=25°C
TSOT23-5 ----------------------------------------------------------------------------- 0.4W
Package Thermal Resistance
TSOT23-5,θJA ----------------------------------------------------------------------- 220°C/W
Maximum Junction Temperature --------------------------------------------------- 125°C
Lead Temperature (Soldering, 10sec.) --------------------------------------------- 260°C
Storage Temperature Range --------------------------------------------------------- -65°C to +150°C
Operating Conditions (2)
Operating Temperature Range ---------------------------------------------------- -40°C to +85°C
Supply Voltage , VIN----------------------------------------------------------------- 2.6V to 5.5V
Note (1): Stress beyond those listed under “Absolute Maximum Ratings” may damage the device.
Note (2): The device is not guaranteed to function outside the recommended operating conditions.
Electrical Characteristics
(VIN =3.6V, VOUT=34V, COUT=0.22µF, CIN=4.7µF, L1=47µH, RFB=15Ω,TA= -40°C to+85°C. Unless otherwise noted.
Typical values are at TA= +25°C)
EUP2539
Symbol
Parameter
Conditions
Unit
Min
2.2
Typ
2.4
Max.
2.6
40
UVLO Under Voltage Lock Out
Maximum Output Voltage
Rising
V
V
No Switching
ICC1
ICC2
Supply Current
VCC=5.5V, Continuous Switching
VCC=5.5V, FB=1.3V, No Switching
VCC=5.5V, VEN<0.4V
1.7
130
0.1
2.6
170
1
mA
µA
µA
Quiescent Current
Shutdown current
ICC3
Oscillator
Fosc
Operation Frequency
0.8
1
1.3
MHz
%
Dmax Maximum Duty Cycle
92
Reference Voltage
VFB
Feedback Voltage
285
300
315
mV
MOSFET
Ω
Rds (on) On resistance of MOSFET
ILX Current Limit
Control and Protection
1
2
0.5
0.4
0.75
1.6
A
VEN1
VEN2
IEN
Shutdown Voltage
0.7
0.7
V
V
Enable Voltage
1.2
1
EN Pin Pull Low Current
OVP Threshold
0.1
µA
V
OVP
37
38.5
40
DS2539 Ver1.1 Apr. 2009
4
EUTECH [ EUTECH MICROELECTRONICS INC ]
