MIC2179-3.3BSM TR Micrel Inc, MIC2179-3.3BSM TR Datasheet - Page 6

• Manufacturer Part Number: MIC2179-3.3BSM TR
• Description: IC REG SYNCBUCK 1.5A 3.3V 20SSOP
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck)r

Specifications of MIC2179-3.3BSM TR

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 3.3V
• Current - Output: 1.5A
• Frequency - Switching: 200kHz
• Voltage - Input: 4.5 ~ 16.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Other names: MIC2179-3.3BSMTR; MIC2179-3.3BSMTR

Block Diagram
June 2009
C
4.02k
C
PWM Mode
R3
Skip Mode
Shutdown
Stop
Enable
0.01µF
R
C
COMP
SYNC
PWM
BIAS
EN
15
14
13
5
8
MIC2179 [Adjustable]
supply Voltage
Oscillator
200kHz
Regulator
Skip-Mode
internal
Select
PWM/
3.3V
Corrective
Ramp
Reset
Pulse
Shutdown
Thermal
UVLO,
R
S
Q
Comp.
PWM
Control
Output
Logic
Comp.
SGND
I
Thresh.
Voltage
LIMIT
Skip-Mode
Comp.
I
LIMIT
V
REF
6
9
1.245V
10
11
12
I
Amp.
SENSE
1.13V
Power Good
P-channel
N-channel
Comp.
110mΩ
110mΩ
VIN
4.5V to 16.5V
16
V
IN
17
PWRGD
SW
3
PGND
1
2
19
20
FB
7
6
100µF
V
OUT
V
Bold lines indicate
high current traces
OUT
V
IN
* Connect
20k
D
= 1.245
S
GND
1.245
L
to P
C
*
OUT
Output Good
(
R1
GND
R2
M9999-063009
R2
R1
+ 1
R1
R2
)
1
V
OUT