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PDF AMS34063S Data sheet ( Hoja de datos )
| Número de pieza | AMS34063S | |
| Descripción | DC-TO-DC CONVERTER CONTROL CIRCUIT | |
| Fabricantes | Advanced Monolithic Systems | |
| Logotipo |  |
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Advanced
Monolithic
Systems
AMS34063
DC-TO-DC CONVERTER CONTROL CIRCUIT
FEATURES
• Wide Input Voltage Operating Range from 2.5V to 40V
• Low Standby Current
• Current Limiting
• Output Switch Current of 1.5A
• Output Voltage Adjustable from 1.25 to 40V
• Frequency of Operation to 100kHz
APPLICATIONS
• Step-Up Converter
• Step-Down Converter
• Voltage Inverting Application
GENERAL DESCRIPTION
The AMS34063 series is a control circuit containing the basic functions required for DC-to-DC converters. The device consists
of an internal temperature compensated reference, a comparator, a controlled duty cycle oscillator with an active current limit
circuit, a driver and a high current output switch. Designed specifically to be incorporated in Step-Up, Step-Down and Voltage
-Inverting applications, the AMS34063 requires a minimum number of external components.
The AMS34063 is available in the 8-lead plastic SOIC and 8-lead plastic DIP packages.
ORDERING INFORMATION
PACKAGE TYPE
8 LEAD PDIP 8 LEAD SOIC
AMS34063P
AMS34063S
OPER. TEMP
RANGE
-40°C to +85°C
PIN CONNECTIONS
8 LEAD SOIC/ 8 LEAD PDIP
SWITCH
COLLECTOR 1
SWITCH
EMITTER
2
TIMING 3
CAPACITOR
GND 4
8
DRIVER
COLLECTOR
7 IPK SENSE
6 VCC
5 COMPARATOR
INVERTING
INPUT
Top View
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
1 page  
AMS34063
TYPICAL APPLICATIONS (Continued)
8
180
7
RSC
0.22
VIN
12V 100
µF
+
6
5
R1 2.2 k
Step-Up Converter
170µH
L
SQ
R
1
Q2
Q1
IPK
OSC
CT
+ COMP.
-
1.25V
REF
REG
2
3
CT
1500
pF
4
1N5819
R2 VOUT
47 k 150 + 28V/175mA
µF CO
Test
Line Regulation
Load Regulation
Output Ripple
Short Circuit Current
Efficiency
Conditions
VIN = 8 to 16V, IO = 175 mA
VIN = 12V, IO = 75 to 175 mA
VIN = 12V, IO = 175 mA
VIN = 12V, RL = 0.1Ω
VIN = 12V, IO = 175 mA
Results
12 mV
5.0 mV
40 mVP-P
2.3A
84.7%
External Current Boost Connections for IC Peak Greater than 1.5A
a. External NPN Switch
b. External NPN Saturated Switch
8
18
0
RSC
VIN
7
6
1
VOUT
8
180
27
RSC
VIN
6
1 VOUT
2
R 0 for
constant VIN
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet AMS34063S.PDF ] | |
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