MIC2172 MICREL [Micrel Semiconductor], MIC2172 Datasheet - Page 7

• Manufacturer Part Number: MIC2172
• Description: 100kHz 1.25A Switching Regulators Preliminary Information
• Manufacturer: MICREL [Micrel Semiconductor]

MIC2172/3172
Typical Performance Characteristics
Block Diagram MIC2172
1997
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-100
Error Amplifier Gain
-50
Temperature ( C)
0
50
P i n 5
SYNC
100
Pin 4
Pin 3
V
FB
I N
150
1.24V
GND
Pin 1
Ref.
S
Reg.
Error
Amp.
2.3V
100kHz
Osc.
7000
6000
5000
4000
3000
2000
1000
0
1
COMP
Pin 2
Error Amplifier Gain
parator
Logic
Com-
10
Frequency (kHz)
4-19
100
1000
Anti-Sat.
Driver
Current
Amp.
10000
D1
GND
Pin 6
Pin 7
V
P
2
SW
Q1
GND
Pin 8
P
1
120
150
180
210
-30
30
60
90
0
1
Error Amplifier Phase
10
Frequency (kHz)
100
1000
10000
Micrel
4