PART OBSOLETE – CONTACT US
AZ34063A
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
OBSOLETE – PART DISCONTINUED
Description
Pin Assignments
The AZ34063A 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.
(Top View)
The AZ34063A 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 AZ34063A is available in 2 packages: SOIC-8 and DIP-8.
SOIC-8
(Top View)
Features
Operation from 3.0V to 36V Input
Low Standby Current
Current Limiting
Output Switch Current to 1.5A
Output Voltage Adjustable
Operation Frequency up to 180kHz
Precision 2% Reference
For automotive applications requiring specific change
control (i.e. parts qualified to AEC-Q100/101/200, PPAP
capable, and manufactured in IATF 16949 certified facilities),
please contact us or your local Diodes representative.
https://www.diodes.com/quality/product-definitions/
AZ34063A
Document number: DS43791 Rev. 1 - 4
DIP-8
Applications
Battery Chargers
ADSL Modems
Hubs
Negative Voltage Power Supplies
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AZ34063A
Typical Applications Circuit
Step-up converter
OBSOLETE – PART DISCONTINUED
L1 150H
R3 180
8
1
B
S
A
Q
R
7
Rsc
0.22
VIN 12V
2
Ipk
IPK
OSC
D1
1N5819
CT
6
+
C1
100F
3
CT
470pF
1.25V
Reference
Regulator
+
-
5
4
L2 1.0
U1 AZ34063A
VOUT
VOUT
28V/175mA
R1 47k
+
R2
2.2k
C2
330 F
+
Optional
Filter
C3
100 F
Note 1: This is a typical step-up converter configuration. In the steady state, if the resistor divider voltage at pin 5 is greater than the voltage in the non-inverting input,
which is 1.25V determined by the internal reference, the output of the comparator will go low. At the next swithching period, the output switch will not conduct
and the output voltage will eventually drop below its nominal voltage until the divider voltage at pin 5 is lower than 1.25V. Then the output of the comparator
will go high, the output switch will be allowed to conduct. Since V PIN5=VOUT* R2/(R1+R2)=1.25(V), the output voltage can be decided by VOUT=1.25 *
(R1+R2)/R2 (V).
AZ34063A
Document number: DS43791 Rev. 1 - 4
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AZ34063A
Typical Applications Circuit (Cont.)
OBSOLETE – PART DISCONTINUED
Step-down converter
1
8
B
S
A
Q
R
2
7
Ipk
IPK
Rsc
0.33
VIN 25V
OSC
D1
1N5819
CT
6
+
C1
100F
L1
220 H
3
CT
470 pF
1.25V
Reference
Regulator
+
-
4
5
L2 1.0 H
U1 AZ34063A
VOUT
VOUT
5V/500mA
R1 3.6k
+
R2
1.2k
C2
470 F
+
Optional
Filter
C3
100 F
Note 2: This is a typical step-down converter configuration. The working process in the steady state is similar to step-up converter, VPIN5=VOUT*R2/(R1+R2)=1.25 (V),
the output voltage can be decided by V OUT=1.25* (R1+R2)/R2 (V).
AZ34063A
Document number: DS43791 Rev. 1 - 4
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AZ34063A
Typical Applications Circuit (Cont.)
OBSOLETE – PART DISCONTINUED
Voltage Inverting Converter
8
1
B
S
A
Q
R
7
2
Ipk
IPK
Rsc
0.24
OSC
L1
88
CT
6
VIN
4.5-6V
3
+
C1
100 F
1.25V
Reference
Regulator
+
-
5
CT
470pF
D1
1N5819
4
U1 AZ34063A
L2 1.0
VOUT
VOUT
-12V/100mA
R1 953
C2
1000 F
Optional
Filter
+
R2
8.2k
C3
100 F
+
Note 3: This is a typical inverting converter configuration. The working process in the steady state is similar to step-up converter, the difference in this situation is that
the voltage at the non-inverting pin of the comparator is equal to 1.25V+VOUT, then VPIN5=VOUT*R2/(R1+R2)=1.25V+VOUT, so the output voltage can be decided
by VOUT=-1.25*(R1+R2)/R1 (V).
Pin Descriptions
Pin Number
Pin Name
1
Switch Collector
2
Switch Emitter
3
Timing Capacitor
4
GND
5
Comparator Inverting Input
6
VCC
7
IPK Sense
8
Driver Collector
AZ34063A
Document number: DS43791 Rev. 1 - 4
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 current through the switch
Voltage driver collector
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AZ34063A
OBSOLETE – PART DISCONTINUED
Functional Block Diagram
AZ34063A
Document number: DS43791 Rev. 1 - 4
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AZ34063A
Absolute Maximum Ratings (Note 4)
OBSOLETE – PART DISCONTINUED
Symbol
Parameter
VCC
Power Supply Voltage
VIR
Comparator Input Voltage Range
Value
Unit
40
V
-0.3 to 40
V
VC(switch)
Switch Collector Voltage
40
V
VE(switch)
Switch Emitter Voltage (VPIN 1=40V)
40
V
VCE(switch)
Switch Collector to Emitter Voltage
40
V
VC(driver)
Driver Collector Voltage
40
V
IC(driver)
Driver Collector Current (Note 5)
100
mA
Switch Current
1.5
A
DIP-8
1.25
W
SOIC-8
780
mW
DIP-8
100
SOIC-8
160
ISW
PD
Power Dissipation (TA=+25 ℃)
Thermal Resistance
℃/W
RθJA
Operating Junction Temperature
+150
℃
TLEAD
Lead Temperature (Soldering, 10s)
+260
℃
TSTG
Storage Temperature Range
TJ
-65 to +150
℃
_
ESD (Human body model)
Note 4:
2000
V
Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied.
Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Note 5:
Maximum package power dissipation limits must be observed.
AZ34063A
Document number: DS43791 Rev. 1 - 4
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AZ34063A
Recommended Operating Conditions
OBSOLETE – PART DISCONTINUED
Symbol
Parameter
VCC
Supply Voltage
TA
Ambient Temperature
Min
Max
Unit
3
36
V
-40
+85
o
C
Electrical Characteristics (VCC=5.0 V, TA=-40 to +85℃, unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
OSCILLATOR
fOSC
Frequency
VPIN5=0V, CT=1.0nF
TA=+25oC
30
38
45
KHz
ICHG
Charge Current
VCC=5.0V to 36V, TA=+25oC
30
38
45
μA
Discharge Current
VCC=5.0V to 36V, TA=+25oC
180
240
290
μA
IDISCHG/ICHG
Discharge to Charge Current
Ratio
Pin 7 to VCC, TA=+25oC
5.2
6.5
7.5
VIPK(sense)
Current Limit Sense Voltage
ICHG=IDISCHG, TA=+25oC
250
300
350
mV
1.0
1.3
V
0.45
0.7
V
_
_
100
μA
IDISCHG
_
OUTPUT SWITCH (Note 6)
VCE(sat)
Saturation Voltage,
Dalington Connection
ISW=1.0A, Pins 1, 8 connected,
Common Emitter
_
VCE(sat)
Saturation Voltage (Note 7.)
ISW=1.0A, RPIN8=82Ω to VCC, Forced ß=20,
Common Emitter
_
DC Current Gain
ISW=1.0A, VCE=5.0V,
TA=+25oC
50
75
Collector Off-State Current
VCE=36V
_
0.01
hFE
IC(off)
AZ34063A
Document number: DS43791 Rev. 1 - 4
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AZ34063A
Electrical Characteristics (Cont. VCC=5.0 V, TA=-40 to +85℃, unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
TA=+25oC
1.225
1.250
1.275
TA=-40 to +85oC
1.21
1.250
1.29
1.4
5
mV
-400
nA
4
mA
OBSOLETE – PART DISCONTINUED
COMPARATOR
VTH
REGLINE
IIB
Threshold Voltage
Threshold Voltage Line
Regulation
VCC=3.0V to 36V
Input Bias Current
VIN=0V
_
-20
VCC=5.0V to 36V, CT=1.0nF,
VPIN7=VCC, VPIN5 > VTH,
VPIN2=GND, other pins open
_
_
_
V
TOTAL DEVICE
ICC
Note 6:
Note7:
Supply Current
Low duty cycle pulse technique are used during test to maintain junction temperature as close to ambient temperature as possible.
If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤ 300mA) and high driver currents (≥ 30mA), it may
take up to 2.0us for it to come out of saturation. This condition will shorten the off time at frequencies 30KHz, and is magnified at high temperatures. This
condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a non-Darlington configuration is used, the following
output drive condition is recommended:
AZ34063A
Document number: DS43791 Rev. 1 - 4
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AZ34063A
Performance Characteristics (VIN = 5V, TA = +25°C, unless otherwise noted.)
VCC=5.0V
VPIN7=VCC
VPIN5=GND
Timing Capacitor Waveform
ton
O
TA=25 C
V OS C . Oscillator Voltage (V)
200mV/DIV
Ton-off. Output Switch On-Off Time (s)
1000
100
toff
10
1
10
Pin 1,5,8=open
CT=1.0nF
V CC =5.0V
V P IN7 =V CC
V P IN2 =GND
1
0.1
TA =25o C
100
T ime. 10s/DIV
CT, Oscillator Timing Capacitor (nF)
Oscillator Frequency vs. Timing Capacitor
Standard Supply Current vs. Supply Voltage
3.5
Frequency (KHz)
O
TA=25 C
10
3.0
ICC. Supply Current (mA)
VCC=5.0V
VPIN7=VCC
VPIN5=GND
100
2.5
2.0
CT=1.0nF
VPIN7=VCC
VPIN2=GND
1.5
1.0
1
0.5
0.1
1
10
0
100
5
10
CT, Oscillator Timing Capacitor (nF)
15
20
25
30
35
40
VCC. Supply Voltage (V)
Emitter Follower Configuration Output
Saturation Voltage vs. Emitter Current
Common Emitter Configuration Output Switch
Saturation Voltage vs. Collector Current
1.4
1.6
1.2
1.5
1.4
VCC=5.0V
VPIN1,7,8=VCC
VPIN3,5=GND
1.3
Saturation Voltage (V)
Saturation Voltage (V)
OBSOLETE – PART DISCONTINUED
Output Switch On-off Time vs.
Oscillator Timing Capacitor
TA=25 C
0.8
0.6
Forced =20
VCC=5.0V
VPIN7=VCC
VPIN2,3,5=GND
0.4
0.2
O
TA=25 C
0.0
-0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Collector Current (A)
Emitter Current (A)
Document number: DS43791 Rev. 1 - 4
Darlington Connection
O
1.2
AZ34063A
1.0
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AZ34063A
Performance Characteristics (Cont.
VIN = 5V, TA = +25°C, unless otherwise noted.)
Current Limit Sense Voltage vs. Temperature
Current Limit Sense Voltage (mV)
OBSOLETE – PART DISCONTINUED
300
290
280
270
260
250
240
-60
-40
-20
0
20
40
60
80
100
120
140
O
Temperature ( C)
AZ34063A
Document number: DS43791 Rev. 1 - 4
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AZ34063A
Ordering Information
OBSOLETE – PART DISCONTINUED
AZ34063A XX XX - XX
Product Name
Package
M : SOIC-8
P : DIP-8
Packing
RoHS/Green
TR : Tape & Reel
Blank : Tube
G1 : Green
Part Number
Package
Packing
Lead Free
SOIC-8
DIP-8
Marking ID
Temperature Range
Green
Lead Free
Green
AZ34063AM-E1
AZ34063AM-G1
34063AM-E1
34063AM-G1
Tube
AZ34063AMTR-E1
AZ34063AMTR-G1 34063AM-E1
34063AM-G1
Tape & Reel
AZ34063AP-E1
AZ34063AP-G1
AZ34063AP-G1
-40 to +85oC
-40 to +85oC
AZ34063A
Document number: DS43791 Rev. 1 - 4
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AZ34063AP-E1
Tube
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AZ34063A
Package Outline Dimensions (All dimensions in mm(inch).)
Package Type: SOIC-8
OBSOLETE – PART DISCONTINUED
(1)
AZ34063A
Document number: DS43791 Rev. 1 - 4
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AZ34063A
Package Outline Dimensions (Cont. All dimensions in mm(inch).)
Package Type: DIP-8
OBSOLETE – PART DISCONTINUED
(2)
AZ34063A
Document number: DS43791 Rev. 1 - 4
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AZ34063A
IMPORTANT NOTICE
OBSOLETE – PART DISCONTINUED
1.
DIODES INCORPORATED AND ITS SUBSIDIARIES (“DIODES”) MAKE NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
WITH REGARDS TO ANY INFORMATION CONTAINED IN THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY
INTELLECTUAL PROPERTY RIGHTS (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
2.
The Information contained herein is for informational purpose only and is provided only to illustrate the operation of Diodes products
described herein and application examples. Diodes does not assume any liability arising out of the application or use of this document or any
product described herein. This document is intended for skilled and technically trained engineering customers and users who design with Diodes
products. Diodes products may be used to facilitate safety-related applications; however, in all instances customers and users are responsible for
(a) selecting the appropriate Diodes products for their applications, (b) evaluating the suitability of the Diodes products for their intended
applications, (c) ensuring their applications, which incorporate Diodes products, comply the applicable legal and regulatory requirements as well
as safety and functional-safety related standards, and (d) ensuring they design with appropriate safeguards (including testing, validation, quality
control techniques, redundancy, malfunction prevention, and appropriate treatment for aging degradation) to minimize the risks associated with
their applications.
3.
Diodes assumes no liability for any application-related information, support, assistance or feedback that may be provided by Diodes
from time to time. Any customer or user of this document or products described herein will assume all risks and liabilities associated with such
use, and will hold Diodes and all companies whose products are represented herein or on Diodes’ websites, harmless against all damages and
liabilities.
4.
Products described herein may be covered by one or more United States, international or foreign patents and pending patent
applications. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks
and trademark applications. Diodes does not convey any license under any of its intellectual property rights or the rights of any third parties
(including third parties whose products and services may be described in this document or on Diodes’ website) under this document.
5.
Diodes
products
are
provided
subject
to
Diodes’
Standard
Terms
and
Conditions
of
Sale
(https://www.diodes.com/about/company/terms-and-conditions/terms-and-conditions-of-sales/) or other applicable terms. This document does not
alter or expand the applicable warranties provided by Diodes. Diodes does not warrant or accept any liability whatsoever in respect of any
products purchased through unauthorized sales channel.
6.
Diodes products and technology may not be used for or incorporated into any products or systems whose manufacture, use or sale is
prohibited under any applicable laws and regulations. Should customers or users use Diodes products in contravention of any applicable laws or
regulations, or for any unintended or unauthorized application, customers and users will (a) be solely responsible for any damages, losses or
penalties arising in connection therewith or as a result thereof, and (b) indemnify and hold Diodes and its representatives and agents harmless
against any and all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim relating to any noncompliance with
the applicable laws and regulations, as well as any unintended or unauthorized application.
7.
While efforts have been made to ensure the information contained in this document is accurate, complete and current, it may contain
technical inaccuracies, omissions and typographical errors. Diodes does not warrant that information contained in this document is error-free and
Diodes is under no obligation to update or otherwise correct this information. Notwithstanding the foregoing, Diodes reserves the right to make
modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described
herein. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document
is the final and determinative format released by Diodes.
8.
Any unauthorized copying, modification, distribution, transmission, display or other use of this document (or any portion hereof) is
prohibited. Diodes assumes no responsibility for any losses incurred by the customers or users or any third parties arising from any such
unauthorized use.
Copyright © 2021 Diodes Incorporated
www.diodes.com
AZ34063A
Document number: DS43791 Rev. 1 - 4
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