AME5104 Datasheet, PDF (2/12 Pages) Analog Microelectronics – DC/DC Buck Converter

AME, Inc.
AME5104
150KHz,3A PWM
DC/DC Buck Converter
n Function Block Diagram
EN
Current
Source
Bias
1.235V
Reference
2 .5V
Regulator
Start
Up
+
+
200 mV 220 mV
FB
+
R2
AMP
-
R 1=2.5K
+
COMP
-
-
COMP
+
150 KHz
OSC .
+
COMP
Current
-
Limit
-
COMP
+
Driver
Thermal
Limit
V_IN
R
3A
Switch
SW
GND
n Typical Application
+
Unregulated
DC Input
4 FB
AME 5104
1
2
Input
Fix Output
SW
C1
3 GND
680uF
5 EN
L1
33u H
D1
1N5825
L
C2
O
220 u F
A
D
+
Unregulated
DC Input
R2
1K
4 FB
1
AME 5104
2
Input ^{AdjustableOutput SW}
3 Gnd
C1
6 8 0u F
5 EN
R1
L1
4 7uH
D1
1N5825
2
L
C2
O
2 2 0u F
A
D
Rev.C.02