EUP2983
Absolute Maximum Ratings (1)
IN to GND -------------------------------------------------------------------------- -0.3V to 31V
PGND,GND ------------------------------------------------------------------------ -0.3V to 0.3V
FB,LX,OVP to GND -------------------------------------------------------------- -0.3V to 34V
COMP,CTRL to GND ------------------------------------------------------------- -0.3V to 6V
ILX ------------------------------------------------------------------------------------- 2A
Package Thermal Resistance
TDFN-8,θJA ------------------------------------------------------------------------- 50°C/W
Junction Temperature ---------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10sec.) --------------------------------------------- 260°C
Storage Temperature Range -------------------------------------------------------- -65°C to +150°C
Recommend Operating Conditions (2)
Supply Voltage , VIN------------------------------------------------------------------ 6V to 25V
Operation Temperature Range ------------------------------------------------------ -40°C to +85°C
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 =8.4V, L1=22uH, CIN=10µF, COUT=2.2µF, CCOMP=0.1µF, R1=7.5, VCTRL=1V, TA=-40°C to +85°C.
Refer to Figure 2. Unless otherwise noted. Typical values are at TA= +25°C)
EUP2983
Parameter
Conditions
Unit
Min
6
Typ
Max.
25
5.2
Supply Voltage
V
V
Rising
Falling
Continuous Switching
Shutdown VCTRL=0
Rising
Falling
VOVP=30V, VCTRL>0.24V
VOVP=VIN, VCTRL=GND
4.8
4.5
5
UVLO Threshold
Quiescent Current
OVLO Threshold
OVP Input Bias Current
4.7
1.2
120
32
30
40
4.9
1.8
200
V
mA
uA
V
V
µA
µA
20
60
1
Error Amplifier
CTRL to FB Regulation
CTRL Input Resistance
CTRL Dual-Mode Threshold
CTRL Shutdown Enable Delay
V
CTRL=1V, VIN=8.4V, Temp=25℃
CTRL≤1V
90
100
500
180
8.2
52
110
800
240
mV
KΩ
mV
ms
V
200
100
Rising and Falling
FB-to-COMP Transconductance
Oscillator
VCOMP=1V
µs
Operating Frequency
Maximum Duty Cycle
N-Channel Switch
LX On-Resistance
LX Current Limit
0.75
90
1.0
92
1.25
95
MHz
%
VCTRL=3V,VFB=VIN
0.5
1.4
1
2
Ω
Duty Cycle=90%
0.8
A
DS2983 Ver1.2 Nov. 2008
4
EUTECH [ EUTECH MICROELECTRONICS INC ]
