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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 8-pin SOP, PDIP package Lead Free Finish/RoHS Compliant for Lead Free and "Green" products (Note 1) SOP-8L: Available in "Green" Molding Compound (No Br, Sb)
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.
Ordering Information
AP34063 X X X
Package
S8 : SOP-8L N8 : PDIP-8L
Note:
Lead Free
L : Lead Free (Note 2)
Packing
- U : Tube
G : Green
-13 : Taping
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. 2. PDIP-8L is available in "Lead Free" only.
Device
AP34063S8 AP34063N8
Lead-free
Tube/Bulk Package Packaging Quantity Part Number Code (Note 3) Suffix
S8 N8 SOP-8L PDIP-8L 100 60 -U -U
13" Tape and Reel Quantity Part Number Suffix
2500/Tape & Reel NA -13 NA
Note:
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.
AP34063 Rev. 2
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AP34063
UNIVERSAL DC/DC CONVERTER
Pin Assignment
(1) PDIP-8L
(Top View) Switch Collector Switch Emitter Timing Capacitor Gnd
Switch Collector Switch Emitter Timing Capacitor Gnd
(2) SOP-8L
(Top View)
1 2 3 4
8 7 6 5
Driver I pk Sense VCC Collector Comparator Inverting Input
1 2 3 4
8 7 6 5
Driver I pk Sense VCC Collector Comparator Inverting Input
Maximum Ratings
Parameter Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (VPin 1 = 40V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current Switch Current Power Dissipation SOP: TA = 25C and Thermal PDIP: TA = 25C Characteristics Thermal Resistance Maximum Junction Temperature Operating Junction Temperature Range Storage Temperature Range
Note:
Symbol VCC VIR VC (switch) VE (switch) VCE (switch) VC (driver) IC (driver) ISW PD PD JA TMJ TOP Tstg
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.
AP34063 Rev. 2
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AP34063
UNIVERSAL DC/DC CONVERTER
Electrical Characteristics ( VCC = 5.0V, unless otherwise specified.)
Characteristics OSCILLATOR Frequency (VPin 5 = 0V, CT = 1.0nF, TA = 25C) Charge Current (VCC = 5.0V to 40V, TA = 25C) Discharge Current (VCC = 5.0V to 40V, TA = 25C) Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25C) Current Limit Sense Voltage (Ichg = Idischg, TA = 25C) OUTPUT SWITCH (Note 3) Saturation Voltage, Darlington Connection (ISW = 1.0A, Pins 1,8 connected) Saturation Voltage, Darlington Connection (ISW = 1.0A, ID = 50mA, Forced 20) DC Current Gain (ISW = 1.0A, VCE = 5.0V, TA = 25C) Collector Off-State Current (VCE = 40V) COMPARATOR Threshold Voltage TA = 25C TA = 0oC ~ 70oC Threshold Voltage Line Regulation (VCC = 3.0V to 40V) TOTAL DEVICE Supply Current (VCC = 5.0V to 40V, CT =1.0nF, Pin 7 = VCC, VPin 5 > Vth Pin 2 = Gnd, remaining pins open) Symbol fosc Ichg Idischg Idischg / Ichg Vipk (sense) VCE (sat) VCE (sat) hFE IC (off) Vth Regline ICC Min 24 24 140 5.2 300 50 1.225 1.21 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 A A mV V V A V mV mA
Representative Schematic Diagram
Drive Collector
8
1
Switch Collector
SQ
Q2 Q1 100 2 Switch Emitter
R Ipk Sense 7
Ipk Oscillator 6 VCC
CT
Comparator + _ 1.25V Reference Regulator
3
Timing Capacitor
Comparator Inverting Input
5
4
Gnd
(Bottom View)
AP34063 Rev. 2
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AP34063
UNIVERSAL DC/DC CONVERTER
Typical Performance Characteristics
Figure 1. Vce(sat) versus le Vce(sat), Saturation Voltage (V)
1.4 1.26
Figure 2. Reference Voltage versus Temp.
1.2
Reference Voltage (V)
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
1.255
1
1.25
0.8
1.245
0.6
1.24 0 10 20 30 40 50 60 70 80 90 100
Ie, Emitter Current (A)
Temperature (oC)
Figure 3. Current Limit Sense Voltage versus Temperature
440 4.0
Figure 4. Standby Supply Current versus Supply Voltage
Current Sense Voltage (mV)
420
Icc, Supply Current (mA)
10 20 30 40 50 60 70 80 90 100
3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 5 10 15 20 25 30 35 40
400
380
360
340 320 0
Temperature
(oC)
Vcc, Supply Voltage (V)
Figure 5. Emitter Follower Configuration Output Saturation Voltage vs. Emitter Current
1.8 1.75 Vcc=2~10V Pin1,7,8=Vcc Pin3,5=GND TA=25oC Pin2=5 10W
Figure 6.Output Switch On-Off Time versus Oscillator Timing Capacitor ton-off, Output Switch On-Off Time(us)
1000
VCE ( sat), (V)
1.7 1.65 1.6 1.55 1.5 1.45 1.4 100
100
VCC = 5.0V Pin 7 = VCC Pin 5 = GND TA = 25oC
ton
10
t off
1
300
500
700
900
1100
1300
1500
IE(mA)
0.1 0.01
CT, Oscillator Timing Capacitor ( nF)
0.1
1
10
AP34063 Rev. 2
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AP34063
UNIVERSAL DC/DC CONVERTER
Application Circuit
(1) Step-Up Converter
120uH L 8 180 SQ Q2 Q1 2 1N5819 Ipk Rsc 0.24 Vin 12V 6
+
1
R 7
CT Osc 3 VCC
+ _
470 uF
CT Comp. 1.25V Ref Reg 680 pF 4 Vout 28V/200mA 470uF
+
5
R2 R1 10k 56k CO
1.0uH Vout
+
100 Optional Filter
Test Line Regulation Load Regulation Output Ripple Efficiency
Conditions Vin = 9V to 12V, IO = 200mA Vin = 12V, IO = 50mA to 200mA Vin = 12V, IO = 200mA Vin = 12V, IO = 200mA
Results 20mV = 0.035% 15mV = 0.035% 500mVPP 80%
AP34063 Rev. 2
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AP34063
UNIVERSAL DC/DC CONVERTER
Application Circuit
(2) Step-Down Converter
( Continued )
8
1
SQ
Q2 Q1 2
R 7
Ipk Rsc 0.11 Vin 25V 470 uF
+ + _
CT Osc 6 VC
C
1N5819
3 CT L Comp. 1.25V Ref Reg 470 pF 4 Vout 5.0V/500mA 470uF
+
100uH
5
R2 R1 25k 36k CO
1.0uH Vout
+
100 Optional Filter
Test Line Regulation Load Regulation Output Ripple Efficiency
Conditions Vin = 12V to 24V, IO = 500mA Vin = 24V, IO = 50mA to 500mA Vin = 24V, IO = 500mA Vin = 24V, IO = 500mA
Results 20mV = 0.2% 5mV = 0.05% 160mVPP 82%
AP34063 Rev. 2
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AP34063
UNIVERSAL DC/DC CONVERTER
Application Circuit
( Continued )
(3) Voltage Inverting Converter
8
1
SQ
Q2 Q1 2
R 7
Ipk Rsc 0.26 Vin 4.5V to 6.0V
+
L CT Osc
100 uH
6 VC
C + _
3
+
470uF
Comp.
1.25V Ref Reg 4
680 pF
1N5819
5
R1 R2 50k 3k 470uF CO
Vout -12V/100mA
+
1.0uH Vout
+
100
Optional Filter
Test Line Regulation Load Regulation Output Ripple Efficiency
Conditions Vin = 4.5V to 6.0V, IO = 100mA Vin = 5.0V, IO = 20mA to 100mA Vin = 5.0V, IO = 100mA Vin = 5.0V, IO = 100mA
Results 20mV = 0.08% 30mV = 0.12% 500mVPP 60%
AP34063 Rev. 2
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AP34063
UNIVERSAL DC/DC CONVERTER
Design Formula Table
Calculation ton / toff ( ton + toff ) Step-Up Vout + VF -Vin (min) Vin (min) - Vsat 1/f ton + toff toff ton toff ton CT Ipk (switch) Rsc L (min) ( ton +toff ) - toff 4.0x10-5ton 2Iout (max) (ton / toff +1) 0.3 / Ipk (switch) ( Vin (min) - Vsat ) Ipk (switch) CO 9 Iout ton Vripple (pp) ton (max) +1 Step-Down vout + vF vin(min) - vsat - vout 1/f ton + toff ton toff ( ton +toff ) - toff 4.0x10-5ton 2Iout (max) 0.3 / Ipk (switch) ( Vin (min) - Vsat -Vout ) Ipk (switch) Ipk (switch) ( toff + ton ) 8Vripple (pp) ton
(max)
Voltage-Inverting Ivout l + vF Vin - vsat 1/f ton + toff ton toff ( ton + toff ) - toff 4.0x10-5ton 2Iout (max) (ton / toff +1) 0.3 / Ipk (switch) ( Vin (min) - Vsat ) Ipk (switch) 9 Iout ton Vripple (pp) ton (max) +1
+1
Vsat = Saturation voltage of the output switch. VF = Forward voltage drop of the output rectifier. The following power supply characteristics must be chosen: Vin - Nominal input voltage. Vout - Desired output voltage, |Vout| = 1.25 (1+R2/R1) Iout - Desired output current. fmin - Minimum desired output switching frequency at the selected values of Vin and Io. Vripple(pp) - Desired peak-to-peak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the line and load regulation.
AP34063 Rev. 2
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AP34063
UNIVERSAL DC/DC CONVERTER
Marking Information
(1) SOP-8L
(Top view)
8 5
Logo Part Number
AP34063 YY WW X X
1 4
L : Lead Free G : Green Internal code Xth week: 01~52 Year: "01" =2001 "02" =2002 ~
(2) PDIP-8L
(Top view)
Logo Part Number
L : Lead Free
AP34063 YY WW X X
Internal Code Xth week : 01 ~ 52 Year : " 01 " = 2001 02 " = 2002 ~
Device
AP34063 AP34063
Package
SOP-8L PDIP-8L
Marking Code Table Marking Code
AP34063 AP34063
Date Code
YYWW YYWW
AP34063 Rev. 2
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(c) Diodes Incorporated
AP34063
UNIVERSAL DC/DC CONVERTER
Package Information
(1) SOP-8L
( All Dimensions in mm )
5.79/6.20
3.70/4.10
0.08/0.25
0.254 0.38/1.27
Gauge Plane Seating Plane
Detail "A"
7~9 1.30/1.50 1.75max. 0.20typ 7~9
0.35max. 45
Detail "A"
3.70/4.10
1.27typ 4.80/5.30
0.3/0.5
(2) PDIP-8L
AP34063 Rev. 2
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MARCH 2007
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AP34063
UNIVERSAL DC/DC CONVERTER
IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.
AP34063 Rev. 2
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(c) Diodes Incorporated

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