MIC2179-3.3BSM TR Micrel Inc, MIC2179-3.3BSM TR Datasheet - Page 9

• 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

PWM-Mode Functional Diagram
June 2009
Stop
C
C
S Y NC
C O M P
R
C
13
8
MIC2179 [Adjustable] PWM-Mode Signal Path
Oscillator
200kHz
V
Reset
Pulse
I
Error Amp.
Output
I
L 1
S E N S E
S W
Reset
Pulse
Corrective
Ramp
Q
I
LOAD
R
S
Comp.
PWM
S G N D
V
R E F
Amp.
Error
1.245V
9
10
9
11
12
I
Amp.
S E N S E
P-channel
N-channel
110mΩ
110mΩ
VIN
4.5V to 16.5V
16
V
IN
17
S W
3
1
2
19
20
7
P GND
F B
C
IN
∆I
V
L1
OUT
= 1.245
D
L1
I
L1
C
(
OU T
R1
R2
+ 1
)
R 1
R 2
M9999-063009
V
OU T