Diodes AP34063 User Manual
A
P34063
UNIVERSAL DC/DC CONVERTER
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 VoltageInverting applications with a minimum number of external
components.
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
• SO-8 package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
• PDIP-8 and SO-8 package
Totally Lead-Free; RoHS Compliant (Notes 1 & 2)
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AP34063
Document number: DS31004 Rev. 6 - 2
Pin Assignments
1 of 11
www.diodes.com
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
1
2
3
4
1
2
3
4
SO-8
( Top View )
PDIP-8
( Top View )
8
7
6
5
8
7
6
5
Driver
I
pk
Sense
VCC
Collector
Comparator
Inverting
Input
Driver
pk
I
Sense
VCC
Collector
Comparator
Inverting
Input
September 2012
© Diodes Incorporated
A
Typical Applications Circuit
(1) Step-Up Converter
P34063
120uH
L
Test Conditions Results
Line Regulation
Load Regulation
Output Ripple
Efficiency
Vin
12V
Rsc
0.24
8
180
SQ
R
7
Ipk
CT
Osc
6
R1
+
470
V
V
V
V
VCC
uF
5
10k
= 9V to 12V, IO = 200mA
IN
= 12V, IO = 50mA to 200mA
IN
= 12V, IO = 200mA 500mVPP
IN
= 12V, IO = 200mA
IN
R2
56k
+
Comp.
_
Q2
Q1
1.25V
Ref
Reg
20mV = ±0.035%
15mV = ±0.035%
80%
1
2
3
680
pF
4
470uF
CT
+
CO
B240
Vout
28V/200mA
1.0uH
Vout
+
100
Optional Filter
AP34063
Document number: DS31004 Rev. 6 - 2
2 of 11
www.diodes.com
September 2012
© Diodes Incorporated
A
Typical Applications Circuit (cont.)
(2) Step-Down Converter
P34063
Rsc
0.11
Vin
25V
+
470
uF
R1 25k
Test Conditions Results
Line Regulation
Load Regulation
Output Ripple
Efficiency
V
= 12V to 24V, IO = 500mA
IN
V
= 24V, IO = 50mA to 500mA
IN
V
= 24V, IO = 500mA 160mVPP
IN
V
= 24V, IO = 500mA
IN
AP34063
Document number: DS31004 Rev. 6 - 2
8
SQ
7
Ipk
6
VC
C
+
_
5
R2
36k
R
CT
Osc
Comp.
Q2
1.25V
Ref
Reg
Q1
1
2
B240
3
CT
470
pF
4
470uF
L 100uH
5.0V/500mA
+
CO
Vout
1.0uH
Vout
+
100
Optional Filter
20mV = ±0.2%
5mV = ±0.05%
82%
3 of 11
www.diodes.com
September 2012
© Diodes Incorporated
A
Typical Applications Circuit (cont.)
(3) Voltage Inverting Converter
P34063
Rsc
0.26
Vin
4.5V to 6.0V
470uF
R2
Test Conditions Results
Line Regulation
Load Regulation
Output Ripple
Efficiency
= 4.5V to 6.0V, IO = 100mA
V
IN
= 5.0V, IO = 20mA to 100mA
V
IN
V
= 5.0V, IO = 100mA 500mVPP
IN
V
= 5.0V, IO = 100mA
IN
AP34063
Document number: DS31004 Rev. 6 - 2
8
SQ
7
Ipk
6
VC
5
50k
R1
C
+
_
3k
+
R
CT
Osc
Comp.
Q2
1.25V
Ref
Reg
Q1
1
2
L
3
+
4
100
uH
680
pF
470uF
B240
Vout
-12V/100mA
CO
+ +
1.0uH
Optional Filter
Vout
100
20mV = ±0.08%
30mV = ±0.12%
60%
4 of 11
www.diodes.com
September 2012
© Diodes Incorporated
Loading...