MIC2178-5.0BWM Micrel Inc, MIC2178-5.0BWM Datasheet - Page 10

• Manufacturer Part Number: MIC2178-5.0BWM
• Description: IC REG SYNCBCK 2.5A 5.0V 20SOIC
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck)r

Specifications of MIC2178-5.0BWM

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 2.5A
• Frequency - Switching: 200kHz
• Voltage - Input: 4.5 ~ 16.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

MIC2178
Skip-Mode Functional Diagram
M9999-031805
MIC2178 [Adjustable] Skip-Mode Signal Path
V
One-Shot
Pulse
I
V
L1
V
V
SW
FB
REF
REF
Output Control Logic
+ 5mV
– 5mV
V
OUT
I
V
LIM
IN
0
0
Shot
One
Comp.
SGND
I
Thresh.
Voltage
LIMIT
Skip-Mode
Comp.
I
LIMIT
V
S
R
REF
14
Q
1.245V
15
16
10
17
I
Amp.
SENSE
P-channel
VIN
100mΩ
4.5V to 16.5V
1
2
V
IN
9
SW
3
8
PGND
4
5
6
7
12
FB
C
IN
V
OUT
D
L1
I
L1
1.245
C
OUT
R2
R1
R1
R2
1
V
OUT
March 2005
Micrel, Inc.