TM
MP2364 — DUAL 1.5A, 23V, 1.4MHz STEP-DOWN CONVERTER
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Feedback Voltage
Upper Switch-On Resistance
Lower Switch-On Resistance
Upper Switch Leakage
Current Limit (4)
VFB
RDS(ON)1
RDS(ON)2
4.75V ≤ VIN ≤ 23V
VEN = 0V, VSW = 0V
Current Limit Gain
Output Current to Comp Pin GCS
Voltage
Error Amplifier Voltage Gain
Error Amplifier
Transconductance
AVEA
GEA
∆IC = ±10 µA
Oscillator Frequency
Short Circuit Frequency
Soft-Start Pin Equivalent
Output Resistance
fOSC
fSC
VFB = 0V
EN Shutdown Threshold
Voltage
VEN ICC > 100µA
Enable Pull-Up Current
EN UVLO Threshold Rising
EN UVLO Threshold
Hysteresis
IEN
VUVLO
VEN Rising
Supply Current (Shutdown)
IOFF VEN ≤ 0.4V
Supply Current (Quiescent)
ION VEN ≥ 3V
Thermal Shutdown
DMAX
Maximum Duty Cycle
VFB = 0.8V
Minimum On Time
tON
Note:
4) Equivalent output current = 1.5A ≥ 50% Duty Cycle
2.0A ≤ 50% Duty Cycle
Assumes ripple current = 30% of load current.
Slope compensation changes current limit above 40% duty cycle.
Min
0.892
2.5
Typ
0.920
0.18
10
3.0
Max
0.948
10
Units
V
Ω
Ω
µA
A
1.95
A/V
400
V/V
630
930 1230 µA/V
1.4
MHz
210
KHz
9
kΩ
0.7
1.0
1.3
V
1.0
µA
2.37 2.50 2.62
V
210
mV
40
70
µA
2.4
2.8
mA
160
°C
70
%
100
ns
MP2364 Rev. 1.4
www.MonolithicPower.com
3
3/22/2006
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