AP34063
UNIVERSAL DC/DC CONVERTER
Features
•
•
•
•
•
•
•
•
•
•
Operation from 3.0V to 40V Input
Low Standby Current
Current Limiting
Output Switch Current to 1.6A
Output Voltage Adjustable
Frequency Operation to 100 kHz
Precision 2% Reference
Lead Free packages: SOP-8L and PDIP-8L (Note 1)
SOP-8L: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/RoHS Compliant (Note 2)
Description
The AP34063 Series is a monolithic control circuit containing the
primary functions required for DC-to-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 is specifically designed for incorporating in
Step-Down and Step-Up and Voltage-Inverting applications with
a minimum number of external components.
Application Circuit
(1) Step-Up Converter
120uH
L
8
180
S Q
Q2
Q1
2
B240
I
pk
R
sc
0.24
V
in
12V
6
+
1
R
7
C
T
Osc
3
V
CC
470
uF
+
_
C
T
Comp.
1.25V
Ref
Reg
680
pF
4
V
out
28V/200mA
470uF
+
5
R2
R1
10k 56k
C
O
1.0uH
V
out
+
100
Optional Filter
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
AP34063 Rev. 5
DS31004
Conditions
V
in
= 9V to 12V, I
O
= 200mA
V
in
= 12V, I
O
= 50mA to 200mA
V
in
= 12V, I
O
= 200mA
V
in
= 12V, I
O
= 200mA
1 of 11
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Results
20mV =
±0.035%
15mV =
±0.035%
500mV
PP
80%
JULY 2009
©
Diodes Incorporated
AP34063
UNIVERSAL DC/DC CONVERTER
Application Circuit
(2) Step-Down Converter
(Continued)
8
1
S Q
R
7
Q2
Q1
2
I
pk
R
sc
0.11
V
in
25V
470
uF
+
+
_
C
T
Osc
6
V
C
C
B240
3
C
T
L
Comp.
1.25V
Ref
Reg
470
pF
4
R2
V
out
5.0V/500mA
470uF
+
100uH
5
1.0uH
V
out
+
R1
25k
36k
C
O
100
Optional Filter
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
Conditions
V
in
= 12V to 24V, I
O
= 500mA
V
in
= 24V, I
O
= 50mA to 500mA
V
in
= 24V, I
O
= 500mA
V
in
= 24V, I
O
= 500mA
Results
20mV =
±0.2%
5mV =
±0.05%
160mV
PP
82%
AP34063 Rev. 5
DS31004
2 of 11
www.diodes.com
JULY 2009
©
Diodes Incorporated
AP34063
UNIVERSAL DC/DC CONVERTER
Application Circuit
(Continued)
(3) Voltage Inverting Converter
8
1
S Q
Q2
Q1
2
R
7
I
pk
R
sc
0.26
V
in
4.5V to 6.0V
+
L
C
T
Osc
100
uH
6
V
C
C
+
_
3
+
470uF
Comp.
1.25V
Ref
Reg
4
680
pF
B240
5
R1
R2
50k
3k
470uF
C
O
V
out
-12V/100mA
+
1.0uH
V
out
+
100
Optional Filter
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
Conditions
V
in
= 4.5V to 6.0V, I
O
= 100mA
V
in
= 5.0V, I
O
= 20mA to 100mA
V
in
= 5.0V, I
O
= 100mA
V
in
= 5.0V, I
O
= 100mA
Results
20mV =
±0.08%
30mV =
±0.12%
500mV
PP
60%
AP34063 Rev. 5
DS31004
3 of 11
www.diodes.com
JULY 2009
©
Diodes Incorporated
AP34063
UNIVERSAL DC/DC CONVERTER
Ordering Information
AP 34063 XX X - X
Package
S8 : SOP-8L
N8 : PDIP-8L
Lead Free
L : Lead Free (Note 1)
G : Green
Packing
U : Tube
13 : Tape & Reel
Device
Lead-free
Package
Code
S8
S8
N8
Packaging
(Note 3)
SOP-8L
SOP-8L
PDIP-8L
AP34063S8L-13
AP34063S8G-13
AP34063N8L-U
Notes:
Tube
13” Tape and Reel
Part Number
Part Number
Quantity
Quantity
Suffix
Suffix
NA
NA
2500/Tape & Reel
-13
NA
NA
2500/Tape & Reel
-13
60
-U
NA
NA
Lead-free
1. PDIP-8L is available in “Lead Free” product only.
2. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
3. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
Pin Assignment
(1) SOP-8L
(2) PDIP-8L
( Top View )
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
( Top View )
8
7
6
5
Driver
I
pk
Sense
V
CC
Collector
Comparator
Inverting
Input
1
2
3
4
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
1
2
3
4
8
7
6
5
Driver
I
pk
Sense
V
CC
Collector
Comparator
Inverting
Input
AP34063 Rev. 5
DS31004
4 of 11
www.diodes.com
JULY 2009
©
Diodes Incorporated
AP34063
UNIVERSAL DC/DC CONVERTER
Maximum Ratings
Symbol
V
CC
V
IR
V
C (switch)
V
E (switch)
V
CE (switch)
V
C (driver)
I
C (driver)
I
SW
P
D
θ
JA
T
MJ
T
OP
T
stg
Notes:
Parameter
Power Supply Voltage
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage (V
Pin
1 = 40V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
Driver Collector Current
Switch Current
SOP: T
A
= 25°C
Power Dissipation and Thermal
PDIP: T
A
= 25°C
Characteristics
Thermal Resistance
Maximum Junction Temperature
Operating Junction Temperature Range
Storage Temperature Range
Value
40
-0.3 ~ +40
40
40
40
40
100
1.6
600
1.25
160
+150
0 ~ +105
-65 ~ +150
Unit
V
V
V
V
V
V
mA
A
mW
W
°C/W
°C
°C
°C
4. Maximum package power dissipation limits must be observed.
5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
Electrical Characteristics
(V
CC
= 5.0V, unless otherwise specified)
Symbol
Characteristics
Min
OSCILLATOR
f
osc
24
Frequency (V
Pin
5 = 0V, C
T
= 1.0nF, T
A
= 25°C)
24
I
chg
Charge Current (V
CC
= 5.0V to 40V, T
A
= 25°C)
I
dischg
140
Discharge Current (V
CC
= 5.0V to 40V, T
A
= 25°C)
5.2
I
dischg
/ I
chg
Discharge to Charge Current Ratio (Pin 7 to V
CC
, T
A
= 25°C)
V
ipk (sense)
300
Current Limit Sense Voltage (I
chg
= I
dischg
, T
A
= 25°C)
OUTPUT SWITCH
(Note 3)
Saturation Voltage, Darlington Connection
V
CE (sat)
-
(I
SW
= 1.0A, Pins 1,8 connected)
Saturation Voltage, Darlington Connection
-
V
CE (sat)
(I
SW
= 1.0A, ID = 50mA, Forced
ß
≈
20)
50
h
FE
DC Current Gain (I
SW
= 1.0A, V
CE
= 5.0V, T
A
= 25°C)
I
C (off)
Collector Off-State Current (V
CE
= 40V)
-
COMPARATOR
V
th
Threshold Voltage
-
-
1.225
T
A
= 25°C
o
o
T
A
= 0 C ~ 70 C
-
1.21
Reg
line
Threshold Voltage Line Regulation (V
CC
= 3.0V to 40V)
-
TOTAL DEVICE
Supply Current (V
CC
= 5.0V to 40V, C
T
=1.0nF, Pin 7 = V
CC
, V
Pin
I
CC
-
5
> V
th
Pin 2 = Gnd, remaining pins open)
Typ.
33
30
200
6.5
400
1.0
0.45
75
0.01
-
1.25
-
1.4
-
Max
42
42
260
7.5
450
1.3
0.7
-
100
-
1.275
1.29
6.0
3.5
Unit
kHz
µA
µA
-
mV
V
V
-
µA
V
-
-
mV
mA
AP34063 Rev. 5
DS31004
5 of 11
www.diodes.com
JULY 2009
©
Diodes Incorporated
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