EUP2561 查看數據表（PDF） - Eutech Microelectronics Inc
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EUP2561 Datasheet PDF : 9 Pages
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Absolute Maximum Ratings
EUP2561
IN to GND -------------------------------------------------------------------------- -0.3V to 6V
PGND to GND ---------------------------------------------------------------------- -0.3V to 0.3V
LX,OUT to GND ------------------------------------------------------------------- -0.3V to 30V
CTRL to GND -------------------------------------- -0.3V to the lower of 6V or (VIN +0.5V)
COMP,CS to GND ---------------------------------------------------------- -0.3V to (VIN +0.3V)
ILX ------------------------------------------------------------------------------------- 1A
Thermal Resistance
DFN-8 -------------------------------------------------------------------------------- 50°C /W
Junction Temperature ---------------------------------------------------------------- 150°C
Storage Temperature Range ------------------------------------------------------ -65°C to 150°C
Lead Temperature (Soldering, 10sec.) --------------------------------------------- 260°C
Recommended Operating Conditions
Supply Voltage, VIN ---------------------------------------------------------------- 2.6V to 5.5V
Operating Temperature Rang ----------------------------------------------------- -40°C to 85°C
Electrical Characteristics
(VIN = 3V, VOUT = 20V, COUT = 0.1µF, CCOMP = 0.15µF, RSENSE = 7.5Ω, VCTRL = 1.5V, Figure 2,
TA =-40°C to +85°C, unless otherwise noted.)
Parameter
Conditions
EUP2561
Min Typ Max.
Unit
Supply Voltage
2.6
5.5
V
UVLO Threshold
Quiescent Current
OVLO Threshold
OUT Input Bias Current
Output Voltage Range
ERROR AMPLIFIER
VIN rising or falling
No Switching
VOUT rising
VOUT=26V,VCTRL> 0.24V
VOUT=VIN, CTRL=GND
2.20
2.40
0.39
26
27.5
12
22
0.01
(VIN-VD1)
2.60 V
0.60 mA
29
V
35
µA
1
25.5 V
CTRL to CS Regulation
CTRL Input Resistance
CTRL Dual-Mode
Threshold
CTRL Shutdown Enable
Delay
VCTRL = 1V, VIN= 2.6V to 5.5V
VCTRL ≤ 1.0V
Rising
0.095
200
100
0.100 0.105 V
400
700 kΩ
180
260 mV
7.5
mS
CS-to-COMP
Transconductance
OSCILLATOR
Vcomp=1.0V
21
52
85
µS
Operating Frequency
0.78
1.05
1.3 MHz
Maximum Duty Cycle CTRL=IN CS=GND
88
92
96
%
N-CHANNEL SWITCH
LX On-Resistance
1.6
2.4
Ω
LX Current Limit
Duty cycle=90%
550
750 1000 mA
DS2561 Ver1.0 Dec. 2006
4
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