Diodes AZ34063U User Manual

Page 1
Data Sheet
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
General Description
The AZ34063U 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 AZ34063U 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 AZ34063U 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 to 1.5A
• Output Voltage Adjustable
• Operation Frequency up to 180kHz
• Precision 2% Reference
Applications
· Battery Chargers
· ADSL Modems
· Hubs
· Negative Voltage Power Supplies
SOIC-8
Figure 1. Package Types of AZ34063U
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
DIP-8
1
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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
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
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)
1
2
3
4
8
7
6
5
Driver Collector
I
Sense
PK
V
CC
Comparator Inverting Input
Switch
Collector
Switch
Emitter
Timing
Capacitor
GND
Figure 2. Pin Configuration of AZ34063U (Top View)
Functional Block Diagram
Driver
Collector
I
Sense
PK
V
CC
Comparator
Inverting
Input
Figure 3. Functional Block Diagram of AZ34063U
Switch Collector
Switch Emitter
Timing Capacitor
GND
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
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Data Sheet
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
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
AZ34063U -
Circuit Type
Package
M: SOIC-8
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 "G1" suffix in the part number, are RoHS compliant and green.
Temperature
Range
o
-40 to 85
-40 to 85
C
o
C
AZ34063UM-G1 34063UM-G1 Tube
AZ34063UMTR-G1 34063UM-G1 Tape & Reel
AZ34063UP-G1
Part Number Marking ID
AZ34063UP-G1
Packing
Typ e
Tube
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
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Data Sheet
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
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
=40V) VE(switch) 40 V
PIN 1
Switch Collector to Emitter Voltage V
Driver Collector Voltage V
Driver Collector Current (Note 2) I
Switch Current I
Power Dissipation (T
Thermal Resistance
=25oC)
A
DIP-8
SOIC-8 780 mW
DIP-8
SOIC-8 160
Operating Junction Temperature T
Lead Temperature (Soldering, 10s) T
Storage Temperature Range T
CC
IR
(switch) 40 V
C
(switch) 40 V
CE
(driver) 40 V
C
(driver) 100 mA
C
SW
P
D
θ
JA
J
LEAD
STG
ESD (Human body model) 2000 V
40 V
-0.3 to 40 V
1.5 A
1.25 W
100
o
150
260
-65 to 150
C/W
o
C
o
C
o
C
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. 3 BCD Semiconductor Manufacturing Limited
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Data Sheet
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
Electrical Characteristics
(V
=5.0V, TA=-40 to 85oC, unless otherwise specified.)
CC
Parameter Symbol Conditions Min Typ Max Unit
OSCILLATOR
V
=0V, CT=1.0nF
Frequency
Charge Current I
Discharge Current I
Discharge to Charge Current Ratio
Current Limit Sense Voltage V
I
DISCHG/ICHG
IPK
OUTPUT SWITCH (Note 3)
Saturation Voltage, Dalington Connection
Saturation Voltage (Note 4.)
V
V
f
OSC
CHG
DISCHG
(sense)
(sat)
CE
(sat)
CE
PIN5
T
=25oC
A
VCC=5.0V to 36V, TA=25oC
VCC=5.0V to 36V, TA=25oC
Pin 7 to VCC, TA=25oC
I
CHG=IDISCHG
=1.0A, Pins 1, 8 connected,
I
SW
, TA=25oC
Common Emitter
I
=1.0A, R
SW
=82Ω to VCC,
PIN8
Forced β=20, Common Emitter
30 38 45 KHz
30 38 45 μA
180 240 290 μA
5.2 6.5 7.5
250 300 350 mV
1.0 1.3 V
0.45 0.7 V
DC Current Gain
Collector Off-State Current I
h
FE
(off) VCE=36V 0.01 100 μA
C
ISW=1.0A, VCE=5.0V,
T
=25oC
A
50 75
COMPARATOR
1.225 1.250 1.275
1.21 1.250 1.29
1.4 5 mV
V
Threshold Voltage V
Threshold Voltage Line Regulation
R
EGLINE
Input Bias Current I
TH
IB
TA=25oC
T
=-40 to 85oC
A
VCC=3.0V to 36V
VIN=0V -20 -400 nA
TOTAL DEVICE
VCC=5.0V to 36V, CT=1.0nF,
Supply Current I
Note
3:
Low duty cycle pulse technique are used during test to maintain junction temperature as close to ambient temperature as possible. Note 4: 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 2.0μs 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:
CC
V
PIN7=VCC
V
PIN2
, V
PIN5>VTH
=GND, other pins open
,
4mA
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
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Data Sheet
0 5 10 15 20 25 30 35 40
0.5
1.0
1.5
2.0
2.5
3.0
3.5
CT=1.0nF
V
PIN7=VCC
V
PIN2
=GND
I
CC
Supply Current (mA)
VCC Supply Voltage (V)
0.1 1 10 100
1
10
100
1000
t
off
t
on
VCC=5.0V
V
PIN7=VCC
V
PIN5
=GND
T
A
=25OC
Ton-off Output Switch On-Off Time (μs)
CT Oscillator Timing Capacitor (nF)
0.1 1 10 100
1
10
100
Oscillator Frequency (kHz)
CT Timing Capacitor (nF)
VCC=5.0V
V
PIN7=VCC
V
PIN5
=GND
T
A
=25OC
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
Electrical Characteristics (Continued)
Forced β of output switch:
* The 100Ω resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
IC output
ICdriver - 7.0mA*
10
Typical Performance Characteristics
(V
=5.0V, TA=25oC, unless otherwise specified.)
CC
Oscillator Voltage (V)
OSC
V
200mV/DIV
V
=5.0V
CC
V
PIN7=VCC
V
PIN2
=GND
Pin 1,5,8=open
=1.0nF
C
T
T
=25oC
A
Figure 4. Output Switch On-Off Time vs.
Oscillator Timing Capacitor
Figure 6. Oscillator Frequency vs.Timing Capacitor Figure 7. Standard Supply Current vs. Supply Voltage
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
Time 20μs/DIV
Figure 5. Timing Capacitor Waveform
6
Page 7
Data Sheet
-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
1.2
1.3
1.4
1.5
1.6
VCC=5.0V V
PIN1,7,8=VCC
V
PIN3,5
=GND
TA=25OC
Saturation Voltage (V)
Emitter Current (A)
0.00.20.40.60.81.01.21.41.6
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Darlington Connection
Forced β=20
VCC=5.0V V
PIN7=VCC
V
PIN2,3,5
=GND
T
A
=25OC
Saturation Voltage (V)
Collector Current (A)
-60 -40 -20 0 20 40 60 80 100 120 140
240
250
260
270
280
290
300
Temperature (OC)
Current Limit Sense Voltage (mV)
-40 0 40 80 120 160
1.224
1.232
1.240
1.248
1.256
Feedback Voltage (V)
Temperature (OC)
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
Typical Performance Characteristics (Continued)
(
VCC=5.0V, TA=25oC, unless otherwise specified.)
Figure 8. Emitter Follower Configuration Output
Saturation Voltage vs. Emitter current
Figure 9. Common Emitter Configuration Output Switch
Saturation Voltage vs. Collector Current
Figure 10. Current Limit Sense Voltage vs. Temperature
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
Figure 11. Feedback Voltage vs. Temperature
7
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Data Sheet
-40 0 40 80 120 160
60
80
100
120
140
Operation Frequency (kHz)
Temperature (oC)
VCC=5.0V
CT=330pF
-40 0 40 80 120 160
0.8
1.0
1.2
1.4
Saturation Voltage (V)
Temperature (OC)
ISW =1.0A
VCC=5.0V
PIN1 PIN8 Connected
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
Typical Performance Characteristics (Continued)
(V
=5.0V, TA=25oC, unless otherwise specified.)
CC
Figure 12. Operation Frequency vs. Temperature
Figure 13. Saturation Voltage vs. Temperature
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
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Data Sheet
+
-
Ipk
B
1.25V
Reference
Regulator
A
5
SRQ
I
PK
C
T
OSC
VIN 12V
C1
100μF
R3 180
C
T
470pF
L1 150μH
D1
1N5819
L2 1.0 μΗ
C3
100 μF
Optional
Filter
V
OUT
+
+
U1 AZ34063U
R1 47k
R2
2.2k
C2
330 μF
28V/175mA
+
Rsc
0.22
6
7
8
1
2
3
4
V
OUT
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
Typical Applications
Figure 14. Step-Up Converter (Note 5)
Note 5: 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
R2/(R1+R2)=1.25(V), the output voltage can be decided by V
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
PIN5=VOUT
=1.25 * (R1+R2)/R2 (V).
OUT
9
*
Page 10
Data Sheet
+
-
Ipk
B
1.25V
Reference
Regulator
A
1
SRQ
I
PK
C
T
OSC
VIN 25V
C1
100μF
Rsc
0.33
L2 1.0 μH
C3
100 μF
Optional
Filter
5V/500mA
V
OUT
D1
1N5819
L1
220 μH
C
T
470 pF
+
+
R1 3.6k
R2
1.2k
C2
470 μF
+
U1 AZ34063U
2
3
4
5
6
7
8
V
OUT
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
Typical Applications (Continued)
Figure 15. Step-Down converter (Note 6)
Note 6: This is a typical step-down converter configuration. The working process in the steady state is similar to step-up converter, V
PIN5=VOUT
(R1+R2)/R2 (V).
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
*R2/(R1+R2)=1.25 (V), the output voltage can be decided by V
OUT
10
=1.25*
Page 11
Data Sheet
+
-
Ipk
B
1.25V Reference Regulator
A
8
SRQ
I
PK
C
T
OSC
V
IN
4.5-6V
C1
100 μF
Rsc
0.24
L2 1.0 μΗ
Optional
Filter
V
OUT
D1
1N5819
L1
88 μΗ
+
C3
100 μF
+
C
T
470pF
R1 953
R2
8.2k
C2
1000 μF
-12V/100mA
+
U1 AZ34063U
7
6
54
3
2
1
V
OUT
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
Typical Applications (Continued)
Figure 16. Voltage Inverting Converter (Note 7)
Note 7: 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+V
V
=-1.25*(R1+R2)/R1 (V).
OUT
OUT
, then V
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
PIN5=VOUT
*R2/(R1+R2)=1.25V+V
11
, so the output voltage can be decided by
OUT
Page 12
Data Sheet
0
°
8
°
1° 5°
R
0
.
1
5
0
(
0
.
0
0
6
)
R0.150(0.006)
1.000(0.039)
0.330(0.013)
0.510(0.020)
1.350(0.053)
1.750(0.069)
0.100(0.004)
0.300(0.012)
0.900(0.035)
0.800(0.031)
0.200(0.008)
3.800(0.150)
4.000(0.157)
7
°
7
°
2
0
:
1
D
1.270(0.050)
TYP
0.190(0.007)
0.250(0.010)
8
°
D
5.800(0.228)
6.200(0.244)
0.675(0.027)
0.725(0.029)
0.320(0.013)
8
°
0.450(0.017)
0.800(0.031)
4.700(0.185)
5.100(0.201)
Note: Eject hole, oriented hole and mold mark is optional.
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
Mechanical Dimensions
SOIC-8 Unit: mm(inch)
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
12
Page 13
Data Sheet
4
°
6
°
R0.750(0.030)
0.254(0.010)TYP
0.130(0.005)MIN
8.200(0.323)
9.400(0.370)
0.204(0.008)
0.360(0.014)
7.620(0.300)TYP
4
°
6
°
5°
0.700(0.028)
9.000(0.354)
9.600(0.378)
3.710(0.146)
4.310(0.170)
3.000(0.118)
3.600(0.142)
0.360(0.014)
0.560(0.022)
2.540(0.100) TYP
6.200(0.244)
6.600(0.260)
3.200(0.126)
3.600(0.142)
0.510(0.020)MIN
Φ3.000(0.118)
Depth
0.100(0.004)
0.200(0.008)
1.524(0.060) TYP
Note: Eject hole, oriented hole and mold mark is optional.
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063U
Mechanical Dimensions (continued)
DIP-8 Unit: mm(inch)
Jan. 2013 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
13
Page 14
BCD Semiconductor Manufacturing Limited
IMPORTANT NOTICE
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-
cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any
cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any
particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use
particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use
of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or
of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or
other rights nor the rights of others.
other rights nor the rights of others.
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