MIC2546 Micrel Semiconductor, MIC2546 Datasheet - Page 2

• Manufacturer Part Number: MIC2546
• Description: Dual Programmable Current Limit Switch Preliminary Information
• Manufacturer: Micrel Semiconductor

MIC2546/2547
Ordering Information
Pin Configuration
Pin Description
MIC2546/2547
Pin Number
2, 16
4, 10
6, 14
8, 11
12
13
15
1
3
5
7
9
GNDB
OUTB
OUTA
FLGA
ILIMB
ENA
INA
NC
1
2
3
4
5
6
7
8
16-Pin TSSOP (TS)
Part Number
MIC2546-1BM
MIC2546-1BTS
MIC2546-2BM
MIC2546-2BTS
MIC2547-1BM
MIC2547-1BTS
MIC2547-2BM
MIC2547-2BTS
* Thermal Shutdown Latch
16-Pin SOP (M)
MIC2546/2547
GNDB, GNDA
Pin Name
OUTA
OUTB
FLGA
ILIMB
FLGB
ILIMA
ENA
ENB
INA
INB
NC
16 OUTA
15
14
13
12
11
10
9
Active High
Active High
Active High
Active High
Active Low
Active Low
Active Low
Active Low
Enable
ILIMA
GNDA
FLGB
ENB
OUTB
NC
INB
Pin Function
Input A: Output A MOSFET drain. Also supplies internal circuitry.
Switch A (Output): Output A MOSFET source. Pins 2 and 16 must be
externally connected.
Enable A (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.
MIC2547 only: Also resets thermal shutdown latch.
Not internally connected.
Fault Flag A (Output): Active-low, open-drain output. Indicates overcurrent
or thermal shutdown conditions. MIC2547 only: latched low on thermal
shutdown.
Ground. Both pins must be connected to GND.
Current Limit Channel B: Sets current-limit threshold using an external
resistor, R
Switch B (Output): Pins 8 and 11 must be externally connected.
Input B
Enable B (Input)
Fault Flag B (Output)
Current Limit Channel A.
Latch*
•
•
•
•
SET
2
, connected to ground. 154 < R
Temperature Range
–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
(FLGA)
(ILIMA)
(FLGB)
(ENA)
(ENB)
Functional Pinout
MIC2546/2547
(ILIMB) (GND)
CHARGE
CHARGE
16-pin TSSOP
16-pin TSSOP
16-pin TSSOP
16-pin TSSOP
LOGIC,
LOGIC,
PUMP
PUMP
16-pin SOP
16-pin SOP
16-pin SOP
16-pin SOP
Package
SET
< 2.29k .
(OUTA)
(INA)
(OUTB)
(INB)
June 2000
Micrel