MIC2544-1 MICREL [Micrel Semiconductor], MIC2544-1 Datasheet - Page 2

• Manufacturer Part Number: MIC2544-1
• Description: Programmable Current Limit High-Side Switch Preliminary Information
• Manufacturer: MICREL [Micrel Semiconductor]

MIC2544/2548
Ordering Information
Pin Configuration
Pin Description
MIC2544/2548
Pin Number
MSOP-8
6,8
1
2
3
5
7
4
GND
FLG
ILIM
EN
Pin Number
SOP-8
* Thermal Shutdown Latch
6,8
1
2
3
4
Part Number
MIC2544-1BM
MIC2544-1BMM
MIC2544-2BM
MIC2544-2BMM
MIC2548-1BM
MIC2548-1BMM
MIC2548-2BM
MIC2548-2BMM
1
2
3
4
7
5
8-Pin SOP (M)
MIC2544/2548
Pin Name
GND
OUT
FLG
ILIM
8
7
6
5
NC
EN
IN
Active High
Active High
Active High
Active High
Active Low
Active Low
Active Low
Active Low
Enable
OUT
IN
OUT
NC
(FLG)
(EN)
MIC2544/2548
Pin Function
Enable (Input): Logic-compatible enable input. Active-high (-1) or active-low
(-2). High input >1.7V typical; low input <1.5V typical. Do not float.
MIC2548 only: Also resets thermal shutdown latch.
Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent or
thermal shutdown conditions.
MIC2548 only: latched low on thermal shutdown.
Ground
Current Limit: Sets current-limit threshold using an external resistor, R
connected to ground. 154Ω < R
Input: Output MOSFET drain. Also powers internal circuitry.
Switch (Output): Output MOSFET source. Pins 6 and 8 must be externally
connected.
Not internally connected
(ILIM)
CHARGE
LOGIC,
PUMP
Latch*
•
•
•
•
(GND)
2
Temperature Range
(OUT)
(IN)
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
NOTE: PINS 4 AND 5
FOR SOIC AND MSOP
ARE DIFFERENT.
GND
FLG
NC
SET
EN
< 2.29kΩ.
8-Pin MSOP (MM)
1
2
3
4
MIC2544/2548
8-pin MSOP
8-pin MSOP
8-pin MSOP
8-pin MSOP
8-pin SOP
8-pin SOP
8-pin SOP
8-pin SOP
Package
8
7
6
5
OUT
IN
OUT
ILIM
June 2000
SET
Micrel
,