CM2500 Datasheet, PDF (5/11 Pages) Champion Microelectronic Corp. – WIDE INPUT 2A STEP DOWN CONVERTER

CM2500
WIDE INPUT 2A STEP DOWN CONVERTER
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TA= 25°C unless otherwise specified.)
PARAMETER
Input Voltage
Feedback Voltage
High-Side Switch On Resistance
Low-Side Switch On Resistance
SW Leakage
Current Limit
COMP to Current Limit
Transconductance
Error Amplifier Transconductance
Error Amplifier DC Gain
Switching Frequency
Short Circuit Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Enable Threshold Voltage
Enable Pull Up Current
Supply Current in Shutdown
IC Supply Current in Operation
Thermal Shutdown Temperature
SYMBOL TEST CONDITIONS
MIN TYP MAX UNIT
VIN
VOUT = 5V, ILOAD = 0A to 1A
7
20
V
VFB
4.75V ≤ VIN ≤ 20V, VCOMP =1.5V 1.184 1.222 1.258 V
RONH
0.22
Ω
RONL
4.7
Ω
VEN = 0
1
10
μA
ILIM
2.6
3.3
A
GCOMP
1.8
A/V
GEA
AVEA
fSW
DMAX
ΔICOMP = ±10μA
300
VFB = 0
VFB = 1.1V
VFB = 1.4V
Hysteresis = 0.1V
2.0
Pin pulled up to 4.5V typically when
left unconnected
VEN=0
VEN=3V , VFB=1.4V
Hysteresis=10°C
550
3200
360
50
90
2.2
2.5
20
1.0
168
μA/V
V/V
420 kHz
kHz
%
0
%
V
uA
50
uA
1.5 mA
°C
2008/04/15 Rev1.0
Champion Microelectronic Corporation
Page 5