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PDF AZ34063D Fiche technique - BCD

Numéro de référence AZ34063D
Description 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
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AZ34063D Datasheet, Description
1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
General Description
Features
Data Sheet
AZ34063D
The AZ34063D is a monolithic switching regulator
control circuit which contains the primary functions
required for DC-DC converters. This device consists
of internal temperature compensated reference, voltage
comparator, controlled duty cycle oscillator with active
current limit circuit, driver and high current output
switch.
The AZ34063D is specifically designed as a general
DC-DC converter to be used in Step-Down, Step-Up
and Voltage-Inverting applications with a minimum
number of external components.
The AZ34063D is available in 2 packages: SOIC-8 and
DIP-8.
• Operation from 3.0V to 36V Input
• Low Standby Current
• Current Limiting
• Output Switch Current to1A
• Output Voltage Adjustable
• Operation Frequency up to 180kHz (CT=100pF)
• Precision 2% Reference
Applications
· Battery Chargers
· ADSL Modems
· Hubs
· Negative Voltage Power Supplies
SOIC-8
DIP-8
Figure 1. Package Types of AZ34063D
Mar. 2010 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
1
AZ34063D Fiche technique
Data Sheet
1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
AZ34063D
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
Switch Collector
Switch Emitter
Timing Capacitor
GND
Comparator Inverting Input
VCC
IPK Sense
Driver Collector
Function
Internal switch transistor collector
Internal switch transistor emitter
Timing Capacitor to control the switching frequency
Ground pin for all internal circuits
Inverting input pin for internal comparator
Voltage supply
Peak Current Sense Input by monitoring the voltage drop
across an external current sense resistor to limit the peak cur-
rent through the switch
Voltage driver collector
Ordering Information
AZ34063D
Circuit Type
Package
M: SOIC-8
P: DIP-8
-
G1: Green
TR: Tape and Reel
Blank: Tube
Package
SOIC-8
DIP-8
Temperature Range
-40 to 85oC
-40 to 85oC
Part Number
AZ34063DM-G1
AZ34063DMTR-G1
AZ34063DP-G1
Marking ID
34063DM-G1
34063DM-G1
AZ34063DP-G1
Packing Type
Tube
Tape & Reel
Tube
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green.
Mar. 2010 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
3

3 Page

AZ34063D pdf
Data Sheet
1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
Electrical Characteristics (Continued)
AZ34063D
Forced β of output switch:
IC dIrCivoeurt-pu7t.0mA*10
* The 100resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
Typical Performance Characteristics
(VCC=5.0V, TA=25oC, unless otherwise specified.)
1000
100
VCC=5.0V
VPIN7=VCC
VPIN5=GND
TA=25OC
10
ton
toff
1
0.1
1 10
CT Oscillator Timing Capacitor (nF)
100
Figure 4. Output Switch On-Off Time vs.
Oscillator Timing Capacitor
VCC=5.0V
VPIN7=VCC
VPIN2=GND
Pin 1,5,8=open
CT=1.0nF
TA=25oC
Time 20µs/DIV
Figure 5. Timing Capacitor Waveform
100
10
1
0.1
VCC=5.0V
VPIN7=VCC
VPIN5=GND
TA=25OC
1 10
CT Timing Capacitor (nF)
100
3.5
3.0
2.5
2.0
1.5 CT=1.0nF
V =V
PIN7 CC
1.0 VPIN2=GND
0.5
0
5 10 15 20 25 30 35 40
VCC Supply Voltage (V)
Figure 6. Oscillator Frequency vs.Timing Capacitor
Figure 7. Standby Supply Current vs. Supply Voltage
Mar. 2010 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
6

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