AX34063 PDF даташит
Спецификация AX34063 изготовлена «AXElite» и имеет функцию, называемую «DC-DC Converter Control Circuits». |
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Детали детали
Номер произв | AX34063 |
Описание | DC-DC Converter Control Circuits |
Производители | AXElite |
логотип |
9 Pages
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AX34063
DC-DC Converter Control Circuits
GENERAL DESCRIPTION
The AX34063 Series is a monolithic control circuit containing the primary functions
required for DC-DC converters. These devices consist of an internal temperature
compensated reference, comparator, controlled duty cycle oscillator with an active current
limit circuit, driver and high current output switch. This series was specifically designed to be
incorporated in Step-Down and Step-Up and Voltage-Inverting applications with a minimum
number of external components.
FEATURES
- Operation from 3.0 V to 40 V Input
- Low Standby Current
- Current Limiting
- Output Switch Current to 1.5 A
- Output Voltage Adjustable
- Frequency Operation to 100 KHz
- Precision 2% Reference
BLOCK DIAGRAM
DRC SWC
IPK SWE
VCC TC
CII GND
1/9
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Rev.0.1 Sep.19, 2011
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AX34063
PIN ASSIGNMENT
The packages of AX34063 are SOP-8L and PDIP-8L; the pin assignment is given by:
Top View
SWC 1
SWE 2
TC 3
GND 4
SWC 1
SWE 2
TC 3
GND 4
SOP-8L
Top View
8 DRC
7 IPK
6 VCC
5 CII
8 DRC
7 IPK
6 VCC
5 CII
Name
Description
SWC Switch Collector
SWE Switch Emitter
TC Timing Capacitor
GND GND Pin
CII Comparator Inverting Input
VCC Voltage Supply
IPK IPK Sense
DRC Voltage Driver Collector
PDIP-8L
ORDER/MARKING INFORMATION
Order Information
AX34063 X X
Package Type
S: SOP-8L
N: PDIP-8L
Packing
Blank: Tube
A : Taping
Top Marking
Logo
AX 3 4 0 6 3
Y Y W WX
Part number
ID code:internal
WW: 01~52
Year: 10=2010
11=2011
ABSOLUTE MAXIMUM RATINGS (at TA=25°C)
Characteristics
Symbol
Power Supply Voltage
VCC
Comparator Input Voltage Range
VIR
Switch Collector Voltage
VSWC
Switch Emitter Voltage (VSWC=40V)
VSWE
Switch Collector to Emitter Voltage
VCE
Driver Collector Voltage
VC
Driver Collector Current
IC
Switch Current
ISW
Power Dissipation
PDIP-8L
SOP-8L
PD
Operating Junction Temperature
TJ
Storage Temperature Range
TST
Operating Ambient Temperature Range AX34063
TA
Thermal Resistance from Junction to Ambient
PDIP-8L
SOP-8L
θJA
Note: θJA is measured with the PCB copper area of approximately 1 in2(Multi-layer).
Rating Unit
40 V
-0.3 to +40 V
40 V
40 V
40 V
40 V
100 mA
1.5 A
1.25
0.625
W
+150 °C
-40 to +150 °C
0 to +70 °C
100
160
°C/W
2/9
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.0.1 Sep.19, 2011
No Preview Available ! |
AX34063
ELECTRICAL CHARACTERISTICS
(TA = +25°C, unless otherwise noted.)
Characteristics
Symbol
Conditions
Min Typ Max Units
OSCILLATOR
Frequency
fOSC VPin 5=0V, CT=1.0nF
24 33 42 KHz
Charge Current
Ichg VCC=5.0V to 40V
24 35 42 μA
Discharge Current
Idischg VCC=5.0V to 40V
140 220 260 μA
Discharge
Ratio
to
Charge
Current Idischg/Ichg Pin 7 to VCC
5.2 6.5 7.5 -
Current Limit Sense Voltage Vipk Ichg =Idischg
250 300 350 mV
OUTPUT SWITCH
Saturation Voltage, Darlington
Connection
VCE(sat) ISW=1.0A, Pins1,8 connected
- 1.0 1.3 V
Saturation Voltage
VCE(sat)
ISW=1.0A, RPins 8 =82Ω to VCC,
Forced β ≃ 20
- 0.45 0.7 V
DC Current Gain
hFE ISW=1.0A, VCE=5.0V
50 75 - -
Collector Off-State Current
COMPARATOR
IC(off) VCE=40V
- 0.01 100 uA
Threshold Voltage
Threshold Voltage Line
Regulation
Vth
TA=25°C
TA=Tlow to Thigh
Regline VCC=3.0V to 40V
1.225 1.25 1.275 V
1.21 - 1.29 V
- 1.4 5.0 mV
Input Bias Current
IIB VIN=0V
- -20 -400 nA
TOTAL DEVICE
Supply Current
VCC=5.0V to 40V, CT=1.0nF,
ICC
Pin7=VCC, VPin5>Vth,
Pin2=GND, remaining pins
open
- - 4.0 mA
Note: The 100W resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
3/9
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.0.1 Sep.19, 2011
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