Diodes AZ34063C User Manual
Data Sheet
1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C
General Description
The AZ34063C 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 AZ34063C 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 AZ34063C is available in 2 packages: SOIC-8 and
DIP-8.
Features
• Operation from 3.0V to 36V Input
• Low Standby Current
• Current Limiting
• Output Switch Current to1A
• Output Voltage Adjustable
• Operation Frequency up to 180kHz (C
• Precision 2% Reference
Applications
· Battery Chargers
· ADSL Modems
· Hubs
· Negative Voltage Power Supplies
=100pF)
T
SOIC-8 DIP-8
Figure 1. Package Types of AZ34063C
Jan. 2013 Rev. 1. 7 BCD Semiconductor Manufacturing Limited
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Data Sheet
+
-
Ipk
B
1.25V
Reference
Regulator
A
8
7
54
3
2
1
SRQ
6
I
PK
C
T
OSC
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C
Pin Configuration
P Package
(DIP-8)
Driver
Collector
I
Sense
PK
V
CC
Comparator
Inverting Input
Switch
Collector
Switch
Emitter
Timing
Capacitor
GND
M Package
(SOIC-8)
Driver
Collector
I
Sense
PK
V
CC
Collector
Switch
Emitter
Timing
Capacitor
Comparator
Switch
Inverting Input
GND
Figure 2. Pin Configuration of AZ34063C (Top View)
Functional Block Diagram
Driver
Collector
I
Sense
PK
V
CC
Comparator
Inverting
Input
Figure 3. Functional Block Diagram of AZ34063C
Switch
Collector
Switch
Emitter
Timing
Capacitor
GND
Jan. 2013 Rev. 1. 7 BCD Semiconductor Manufacturing Limited
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Data Sheet
1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C
Pin Description
Pin Number Pin Name Function
1 Switch Collector Internal switch transistor collector
2 Switch Emitter Internal switch transistor emitter
3 Timing Capacitor Timing Capacitor to control the switching frequency
4 GND Ground pin for all internal circuits
5 Comparator Inverting Input Inverting input pin for internal comparator
6V
7
8 Driver Collector Voltage driver collector
I
PK
CC
Sense
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
Ordering Information
AZ34063C -
Circuit Type
Package
M: SOIC-8
E1: Lead Free
G1: Green
TR: Tape and Reel
Blank: Tube
P: DIP-8
Package
SOIC-8
DIP-8
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green packages.
Temperature
Range
o
-40 to 85
-40 to 85
C
o
C
Lead Free Green Lead Free Green
AZ34063CM-E1 AZ34063CM-G1 34063CM-E1 34063CM-G1 Tube
AZ34063CMTR-E1 AZ34063CMTR-G1 34063CM-E1 34063CM-G1 Tape & Reel
AZ34063CP-E1 AZ34063CP-G1 AZ34063CP-E1 AZ34063CP-G1
Part Number Marking ID
Packing Type
Tube
Jan. 2013 Rev. 1. 7 BCD Semiconductor Manufacturing Limited
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Data Sheet
1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C
Absolute Maximum Ratings (Note 1)
Parameter Symbol Value Unit
Power Supply Voltage V
Comparator Input Voltage Range V
Switch Collector Voltage V
Switch Emitter Voltage (V
Switch Collector to Emitter Voltage V
Driver Collector Voltage V
Driver Collector Current (Note 2) I
Switch Current I
Power Dissipation (T
Thermal Resistance
Operating Junction Temperature T
Lead Temperature (Soldering, 10s) T
Storage Temperature Range T
ESD (Human body model) 2000 V
A
=40V) VE(switch) 40 V
PIN 1
=25 ℃ )
DIP-8
SOIC-8 780 mW
DIP-8
SOIC-8 160
CC
IR
(switch) 40 V
C
(switch) 40 V
CE
(driver) 40 V
C
(driver) 100 mA
C
SW
P
D
R
θJA
J
LEAD
STG
40 V
-0.3 to 40 V
1A
1.25 W
100
150
260
-65 to 150
℃ /W
℃
℃
℃
Note 1: 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 2: Maximum package power dissipation limits must be observed.
Recommended Operating Conditions
Parameter
Supply Voltage
Ambient Temperature
Symbol
V
CC
T
A
Min Max Unit
336V
-40 85
o
C
Jan. 2013 Rev. 1. 7 BCD Semiconductor Manufacturing Limited
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