) ................................................................................................................................. +2.7V to +5.5V
Current Limit Set Range ............................................................................................................................... 0.1A to 1.5A
† Notice:
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability.
‡ Notice:
The device is not guaranteed to function outside its operating ratings.
Note 1:
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5 kΩ in series with
100 pF.
2017 Microchip Technology Inc.
DS20005725B-page 3
MIC2544/48
TABLE 1-1:
ELECTRICAL CHARACTERISTICS (Note
1)
Symbol
I
IN
V
EN
—
R
DS(ON)
—
161
Output Leakage Current
Output Turn-On Delay
Output Turn-On Rise
Time
Output Turn-Off Delay
Output Turn-Off Fall Time
Overtemperature
Threshold Shutdown
Error Flag Output
Resistance
Error Flag Off Current
EN Pulse Reset Width
V
IN
to EN Set-Up
Current-Limit Response
Time
Overcurrent Flag
Response Time
Note 1:
2:
3:
4:
—
t
ON
t
R
t
OFF
t
F
—
—
—
—
—
—
—
—
1
1
—
—
—
—
—
—
—
5
0
—
—
230
1
2
2
22
21
140
130
4
5
0.01
—
—
25
5
299
10
5
5
—
—
—
—
15
20
1
—
—
—
—
µA
ms
ms
µs
µs
°C
Ω
µA
µs
µs
µs
µs
Min.
—
—
2.4
—
—
—
184
Current Limit Factor
Typ.
0.75
75
1.7
1.5
1
80
230
Max.
5
160
—
0.8
—
120
276
V
Units
µA
V
pF
mΩ
Conditions
Switch off, OUT = Open (Note
2)
Switch on, OUT = Open (Note
2)
Enable High, (Note
2)
Enable Low, (Note
2)
Note 3
I
OUT
= 500 mA
I
OUT
= 100 mA to 1A, V
OUT
= 1V to 4V,
(Note
4)
I
OUT
= 500 mA to 1.5A, V
OUT
= 1V to
4V, (Note
4)
Switch off
R
L
= 10Ω, C
L
= 1 µF,
Figure 4-2,
Figure 4-3
R
L
= 10Ω, C
L
= 1 µF,
Figure 4-2,
Figure 4-3
R
L
= 10Ω, C
L
= 1 µF,
Figure 4-2,
Figure 4-3
R
L
= 10Ω, C
L
= 1 µF,
Figure 4-2,
Figure 4-3
T
J
increasing
T
J
decreasing
V
IN
= 5V, I
L
= 10
μA
V
IN
= 3.3V, I
L
= 10
μA
V
FLG
= 5V
MIC2548 thermal shutdown latch
MIC2548, (Note
4)
V
OUT
= 0V, (Note
4)
V
OUT
= V
IN
/2 to FLG low.
Electrical Characteristics:
V
IN
= +5V; T
A
= 25°C, bold values indicate –40°C to +85°C, unless noted.
Parameter
Supply Current
Enable Input Voltage
Enable Input
Capacitance
Switch Resistance
Specification for packaged product only.
Off is
≤
0.8V and on is
≥
2.4V for the MIC2544-1 and MIC2548-1. Off is
≥
2.4V and on is
≤
0.8V for the
MIC2544-2 and MIC2548-2. The enable input has about 200 mV of hysteresis.
Guaranteed by design but not production tested.
Current limit threshold is determined by I
LIMIT
= 230V/R
SET
, where R
SET
is in ohms.
DS20005725B-page 4
2017 Microchip Technology Inc.
MIC2544/48
TEMPERATURE SPECIFICATIONS (Note
1)
Parameters
Temperature Ranges
Storage Temperature Range
Lead Temperature
Junction Temperature
Ambient Temperature
Package Thermal Resistance
Thermal Resistance, 8-Ld SOIC
Thermal Resistance, 8-Ld MSOP
Note 1:
θ
JA
θ
JA
—
—
160
206
—
—
°C/W
°C/W
—
—
T
S
—
T
J
T
A
–65
—
—
–40
—
—
—
—
+150
+260
—
+85
°C
°C
°C
°C
—
Soldering, 5 sec.
Internally Limited
—
Sym.
Min.
Typ.
Max.
Units
Conditions
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable
junction temperature and the thermal resistance from junction to air (i.e., T
A
, T
J
,
JA
). Exceeding the
maximum allowable power dissipation will cause the device operating junction temperature to exceed the
maximum +125°C rating. Sustained junction temperatures above +125°C can impact the device reliability.
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