MIC2549A-2BN(2000) 데이터 시트보기 (PDF) - Micrel
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MIC2549A-2BN Datasheet PDF : 16 Pages
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MIC2545A/2549A
Ordering Information
Part Number
MIC2545A-1BM
MIC2545A-1BN
MIC2545A-1BTS
MIC2545A-2BM
MIC2545A-2BN
MIC2545A-2BTS
MIC2549A-1BM
MIC2549A-1BN
MIC2549A-1BTS
MIC2549A-2BM
MIC2549A-2BN
MIC2549A-2BTS
Enable
Active High
Active High
Active High
Active Low
Active Low
Active Low
Active High
Active High
Active High
Active Low
Active Low
Active Low
Latch*
•
•
•
•
•
•
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
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Package
8-lead SOP
8-pin DIP
14-lead TSSOP
8-lead SOP
8-pin DIP
14-lead TSSOP
8-lead SOP
8-pin DIP
14-lead TSSOP
8-lead SOP
8-pin DIP
14-lead TSSOP
Micrel
Pin Configuration
MIC2545A/2549A
EN 1
8 OUT
FLG 2
7 IN
GND 3
6 OUT
ILIM 4
5 IN
8-Lead SOP (M)
8-Pin DIP (N)
MIC2545A/2549A
(EN) 1
(FLG) 2
LOGIC,
CHARGE
PUMP
6,8 (OUT)
5,7 (IN)
(ILIM) 4 3 (GND)
EN 1
NC 2
FLG 3
NC 4
GND 5
NC 6
ILIM 7
MIC2545A/2549A
14 OUT
13 NC
12 IN
11 NC
10 OUT
9 NC
8 IN
14-Lead TSSOP (TS)
Pin Description
Pin Number
SOP, DIP
1
Pin Number
TSSOP
1
2
3
3
5
4
7
5, 7
8, 12
6, 8
10, 14
2,4,6,9,11,13
Pin Name
EN
FLG
GND
ILIM
IN
OUT
NC
Pin Function
Enable (Input): Logic-compatible enable input (-1 version is active high, -2
version is active low). High input >1.8V typical; low input <1.4V typical.
Do not float.
MIC2549A only: Also resets thermal shutdown latch.
Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent or
thermal shutdown.
MIC2549A only: latched low on thermal shutdown.
Ground: Supply return.
Current Limit: Sets current limit threshold using an external resistor (RSET)
connected to ground. 76.8Ω < RSET < 459Ω.
Supply Input: Output MOSFET drain. Also powers internal circuitry. Both IN
pins must be externally connected together.
Switch Output: Output MOSFET source. Both OUT pins must be externally
connected together.
not internally connected
MIC2545A/2549A
2
June 2000
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