MIC2549A-1YM Micrel Inc, MIC2549A-1YM Datasheet - Page 4

• Manufacturer Part Number: MIC2549A-1YM
• Description: IC SW CURR LIMIT HI SIDE 8-SOP
• Manufacturer: Micrel Inc
• Type: High Sider

Specifications of MIC2549A-1YM

• Input Type: Non-Inverting
• Number Of Outputs: 1
• On-state Resistance: 35 mOhm
• Current - Peak Output: 3A
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Short Circuit Current Limit: 0.5 to 3A
• Input Voltage Range: 2.7 to 5.5V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-2180; MIC2549A-1YM

MIC2545A/2549A
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
Symbol
V
R
t
t
t
t
t
V
Notes:
1. Exceeding the absolute maximum ratings may damage the device.
2. The device is not guaranteed to function outside its operating ratings.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
4. Assumes 4 layer PCB is used.
5. Current limit is determined by:
6. Off is
7. Guaranteed by design but not production tested.
M9999-041204
ON
R
OFF
F
SU
IN
EN
OL
DS(on)
enable input has about 100mV of hysteresis.
= +5V; T
0.8V and on is
A
(3) ..........................................................................
= 25 C, bold indicates –40 C to +85 C; unless noted
Parameter
Supply Current
Enable Input Voltage
Enable Input Current
Enable Input Capacitance
Switch Resistance
Current Limit Factor
Output Leakage Current
Output Turn-On Delay
Output Turn-On Rise Time
Output Turnoff Delay
Output Turnoff Fall Time
Overtemperature Threshold
Shutdown
Error Flag Off Current
EN Pulse Reset Width
V
Current-Limit Response Time
Error Flag Output Resistance
IN
EN
OUT
to EN Set-Up
OUT
IN
) ......................................... –0.3V to +7V
) .................................................. +7.0V
FLG
) ............................... Internally Limited
FLG
) ............................................... +7.0V
2.4V for the MIC2545A-1 and MIC2549A-1. Off is
) ............................................ 50mA
S
) ........................................... +7.0V
J
) ....................... –65 C to +150 C
) ....................... Internally Limited
I
LIMIT
(1)
R
230
SET
, where R
Switch off, OUT = open
MIC2549A thermal shutdown latch
Condition
Switch on, OUT = open
Enable high transition
Enable low transition
V
V
Note 7
I
I
I
Switch off, V
R
R
R
R
T
T
V
MIC2549A
V
I
OUT
LIMIT
LIMIT
FLG
J
J
EN
EN
FLG
OUT
L
L
L
L
increasing
decreasing
SET
= 10 , C
= 10 , C
= 10 , C
= 10 , C
2004V
= V
= V
= 10mA
= 500mA
= 5V
= 0V to I
= 0.5A to 3A, V
= 1A to 2.5A, V
is in ohms, and 230 is typical current limit factor in volts.
OH(min)
OL(max)
(7)
L
L
L
L
OUT
, Figure 1c
4
= 1 F, Figures 1a, 1b
= 1 F, Figure 1a, 1b
= 1 F, Figure 1a, 1b
= 1 F, Figure 1a, 1b
OUT
= 2.4V
Operating Ratings
Supply Voltage (V
Ambient Temperature Range (T
Package Thermal Resistance
Current Limit Set Range
= 0.8V
= 0V
2.4V and on is
PDIP
SOIC
TSSOP
= 2A, I
(6)
(6)
OUT
OUT
(6)
(6)
SET
= 1V to 4V
= 1V to 4V
JA
JA
= 1A
) ......................................................... 130 C/W
) ......................................................... 160 C/W
JA
)
(4)
0.8V for the MIC2545A-2 and MIC2549A-2. The
(7)
(7)
IN
.................................................. 100 C/W
(5)
(5)
) ................................... +2.7V to +5.5V
(5)
(2)
................................. 0.5A to 3A
0.75
Min
160
184
2.4
1
1
0
A
) ............. –40 C to +85 C
0.75
0.01
0.01
0.01
Typ
230
230
135
120
1.6
1.5
1.8
90
35
25
23
40
1
1
2
4
Max
125
150
300
276
0.8
4.9
50
10
15
5
1
1
5
1
April 2004
Micrel
Units
m
ms
ms
pF
V
V
V
V
C
C
A
A
A
A
A
A
A
s
s
s
s
s