MIC2544A-2YMM 데이터 시트보기 (PDF) - Micrel
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MIC2544A-2YMM Datasheet PDF : 19 Pages
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Micrel, Inc.
MIC2544A/2548A
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ....................................... –0.3V to 6.0V
Output Voltage (VOUT) ....................................... –0.3V to VIN
Output Current (IOUT) .................................Internally Limited
Enable Input (VEN) ................................... –0.3V to VIN+0.3V
Fault Flag Voltage (VFLG)................................... –0.3V to 6V
Fault Flag Current (IFLG) ..............................................50mA
Storage Temperature (Ts) .........................–65°C to +150°C
Junction Temperature (TJ) ........................Internally Limited
Lead Temperature (soldering, 10 sec.)...................... 260°C
ESD Rating(3).................................................................. 2kV
Operating Ratings(2)
Supply Voltage (VIN)..................................... +2.7V to +5.5V
Enable Voltage (VEN).............................................. 0V to VIN
Current Limit Set Range................................... 0.1A to 1.5A
Ambient Temperature (TA) .......................... –40°C to +85°C
Package Thermal Resistance
SOIC (θJA) ........................................................160°C/W
MSOP (θJA) ......................................................206°C/W
Electrical Characteristics
VIN = +5V; TA = 25°C, Bold values indicate –40°C to +85°C, unless noted.
Parameter
Condition
Min
Power Input Supply
Input Voltage Range (VIN)
2.7
Shutdown Current
Switch off, VOUT = Open(4)
Supply Current
Switch on, VOUT = Open(4)
Enable Input
EN Logic Level High
2.4
EN Logic Level Low
En Bias Current
VEN = 2.4V(4)
VEN = 0.8V(4)
EN Input Capacitance
(Note 5)
EN Pulse Reset Width
MIC2548 Thermal Shutdown Latch(5)
5
VIN to EN Set-Up
MIC2548(5)
0
Internal Switch
On Resistance RDS(ON)
Output Leakage Current
IOUT = 500mA
Switch off
Current Limit
Current Limit Factor
Current-Limit Response
Time
IOUT = 100mA to 500mA, VOUT = 1V to 4V(6)
161
IOUT = 500mA to 1.5A, VOUT = 1V to 4V(6)
184
VOUT = 0V(5) (6)
Output Response Times
Output Turn-On Delay
RL = 10Ω, CL = 1µF, Figures 1a, 1b
1
Output Turn-On Rise Time RL = 10Ω, CL = 1µF, Figures 1a, 1b
1
Output Turn-Off Delay
RL = 10Ω, CL = 1µF, Figures 1a, 1b
Output Turn-Off Fall Time
RL = 10Ω, CL = 1µF, Figures 1a, 1b
Typ
0.75
90
1.7
1.5
0.1
0.1
1
80
1
230
230
25
2
2
30
30
Max
Units
5.5
V
5
µA
160
µA
V
0.8
V
1.0
µA
1.0
µA
pF
µs
µs
120
mΩ
10
µA
299
V
276
V
µs
5
ms
5
ms
µs
µs
April 2010
4
M9999-043010
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