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AMS34063 Datasheet(Fiches technique) 3 Page - Advanced Monolithic Systems

Numéro de pièce AMS34063
Description  DC-TO-DC CONVERTER CONTROL CIRCUIT
Télécharger  7 Pages
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Fabricant  ADMOS [Advanced Monolithic Systems]
Site Internet  http://www.advanced-monolithic.com
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 3 page
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Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS34063
FUNCTIONAL BLOCK DIAGRAM
TYPICAL PERFORMANCE CHARACTERISTICS
OSCILLATOR TIMING CAPACITOR
1.0
1000
Output Switch On-Off Time vs
Oscillator Timing Capacitor
10
10
100
0.1
1.0
100
0
0.8
3.2
0
5.0
10
15
20
25
30
35
40
SUPPLY VOLTAGE (V)
Standby Supply Current vs
Supply Voltage
1.6
2.4
V
CC = 5.0V
I
PK(sense) = VCC
Pin 5 = GND
C
T= 0.001µF
I
PK(sense) = VCC
Pin 2 = GND
Emitter-Follower Configuration
Output Switch Saturation Voltage
vs Emitter Current
EMITTER CURRENT (A)
0
0.2 0.4 0.6
0.8
1.0
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.2 1.4
V
CC = 5.0V
Pins 1,7,8 = V
CC
Pin 3,5 = GND
Common-Emitter Configuration
Output Switch Saturation Voltage
vs Collector Current
COLLECTOR CURRENT (A)
0
0.2 0.4 0.6
0.8
1.0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.2 1.4
V
CC = 5.0V
Pin 7 = V
CC
Pin 2,3,5 = GND
Darlington Connection
Forced Beta
≈20
1.25V
REF
REG
8
7
6
5
+
-
4
1
2
3
COMP.
I
PK
C
T
OSC
R
S
Q
Q
2
Q
1
170
SWITCH
COLLECTOR
SWITCH
EMITTER
TIMING
CAPACITOR
GND
DRIVE
COLLECTOR
I
PK SENSE
V
CC
COMPARATOR
INVERTING
INPUT




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