MIC2548 MICREL [Micrel Semiconductor], MIC2548 Datasheet - Page 4

• Manufacturer Part Number: MIC2548
• Description: Programmable Current Limit High-Side Switch
• Manufacturer: MICREL [Micrel Semiconductor]

Absolute Maximum Ratings
Supply Voltage (V
Output Voltage (V
Output Current (I
Enable Input (V
Fault Flag Voltage (V
Fault Flag Current (I
Storage Temperature (T
Junction Temperature (T
Lead Temperature (soldering, 5 sec.)........................ 260°C
ESD Rating
Electrical Characteristics
V
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
4. 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
5. Guaranteed by design but not production tested.
6. Current limit threshold is determined by I
Micrel, Inc.
Symbol
V
R
t
T
T
T
April 2010
IN
ON
OFF
EN
R
F
DS(on)
has about 200mV of hysteresis.
= +5V; T
Parameter
Supply Current
Enable Input Voltage
Enable Input Capacitance
Switch Resistance
Current Limit Factor
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
Current-Limit Response Time
Overcurrent Flag Response Time
(3)
A
IN
.................................................................. 2kV
= 25°C, bold values indicate –40°C to +85°C, unless noted.
to EN Set-Up
EN
OUT
) .................................. –0.3V to VIN+0.3V
OUT
IN
) ....................................................+7.0V
) .................................Internally Limited
FLG
) .................................................+7.0V
FLG
) ..............................................50mA
).............................................+7.0V
s
J
) .........................–65°C to +150°C
) ........................Internally Limited
LIMIT
(1)
=
230V
R
SET
, where R
Switch off, OUT = open
Switch on, OUT = open
Enable high
Enable low
Note 5
I
I
I
R
R
R
R
T
T
V
V
V
MIC2548 thermal shutdown latch
V
Condition
Switch off
MIC2548
V
OUT
OUT
OUT
J
J
IN
IN
FLG
OUT
OUT
L
L
L
L
increasing
decreasing
= 10Ω, C
= 10Ω, C
= 10Ω, C
= 10Ω, C
SET
= 5V, I
= 3.3V, I
= 100mA to 1A, V
= 500mA to 1.5A, V
= 500mA
= 5V
= 0V
= V
is in ohms.
IN
(6)
(6)
L
/2 to FLG low
(1)
= 10μA
(4)
L
L
L
L
L
= 1μF, Figures 1a, 1b
= 1μF, Figures 1a, 1b
= 1μF, Figures 1a, 1b
= 1μF, Figures 1a, 1b
= 10μA
4
Operating Ratings
Supply Voltage (V
Current Limit Set Range................................... 0.1A to 1.5A
Ambient Temperature (T
Package Thermal Resistance
SOIC (θ
MSOP (θ
OUT
(4)
(4)
OUT
=1V to 4V
=1V to 4V
JA
JA
) ........................................................160°C/W
) ......................................................206°C/W
IN
(6)
)..................................... +2.7V to +5.5V
(6)
A
(2)
) .......................... –40°C to +85°C
Min
184
161
2.4
#
1
1
5
0
0.75
0.01
Typ
230
230
140
130
1.7
1.5
75
80
22
21
25
1
1
2
2
4
5
5
MIC2544/2548
Max
160
120
276
299
0.8
M9999-043010
10
15
20
5
5
5
1
Units
mΩ
μA
μA
μA
ms
ms
μA
pF
°C
°C
μs
μs
μs
μs
μs
μs
Ω
Ω
V
V
V
V