MIC2177-3.3YWM TR Micrel Inc, MIC2177-3.3YWM TR Datasheet - Page 7
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MIC2177-3.3YWM TR
Manufacturer Part Number
MIC2177-3.3YWM TR
Description
IC REG SYNCBUCK 2.5A 3.3V 20SOIC
Manufacturer
Micrel Inc
Type
Step-Down (Buck)r
Datasheet
1.MIC2177-3.3YWM_TR.pdf
(15 pages)
Specifications of MIC2177-3.3YWM TR
Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
3.3V
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
Lead free / RoHS Compliant
Power - Output
-
Other names
576-1542-2
MIC2177-3.3YWMTR
MIC2177-3.3YWMTR
MIC2177-3.3YWMTR
MIC2177-3.3YWMTR
Functional Diagram
Micrel, Inc.
April 2008
10k
Auto-Mode
Shutdown
Enable
PWM
0.01µF
2.2nF
C
R
C
COMP
SYNC
AUTO
C
BIAS
EN
20
19
18
11
13
MIC2177 [Adjustable]
Shutdown
Regulator
Oscillator
Thermal
200kHz
internal
supply
voltage
UVLO,
3.3V
RESET PULSE
Select Logic
Skip-Mode
PWM/
Q
R
S
CORRECTIVE RAMP
3.3V
10µA
Control
Output
Logic
Comp.
PWM
Comp.
Comp.
I
I
LIMIT
MIN
7
Low Output
Comp.
Skip-Mode
Comp.
SGND
Thrshld.
Amp.
I
Error
14
Amp.
I
SENSE
MIN
15
16
17
P-channel
N-channel
40mV
V
1.245V
VIN
100m
100m
REF
4.5V to 16.5V
1
2
V
IN
9
SW
3
8
PGND
4
5
6
7
10
12
OUT
FB
C
IN
V
Bold lines indicate
high current traces
OUT
D
= 1.245
L1
C
OUT
(
R2
R1
M9999-042108
R1
R2
+ 1
MIC2177
)
V
OUT