AP34063

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,

Pin Assignments
SO-8
( Top View )
Switch Collector Switch Emitter Timing Capacitor Gnd

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

1 2 3 4

8 7 6 5

Driver I pk Sense V CC Collector Comparator Inverting Input

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
Notes:
Switch Collector Switch Emitter Timing Capacitor Gnd

PDIP-8
( Top View )
1 2 3 4 8 7 6 5
Driver I pk Sense V CC Collector Comparator Inverting Input

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Totally Lead-Free; RoHS Compliant (Notes 1 & 2)
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 Incorporateds 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.

PDIP-8 and SO-8 package

AP34063
Document number: DS31004 Rev. 6 - 2

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AP34063

Typical Applications Circuit

(1) Step-Up Converter
120uH L 8 180 S Q Q2 Q1 2 B240 Ipk Rsc 0.24 Vin 12V 6
+

R 7

CT Osc 3 V CC 470 uF
+ _

CT Comp. 1.25V Ref Reg 680 pF 4 V out 28V/200mA 470uF

+

R2 R1 10k 56k CO

1.0uH V out
+

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
Document number: DS31004 Rev. 6 - 2

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AP34063

Typical Applications Circuit (cont.)

(2) Step-Down Converter

S Q R 7

Q2 Q1 2

Ipk Rsc 0.11 Vin 25V 470 uF

+ + _

CT Osc 6 VC
C

B240

3 CT L Comp. 1.25V Ref Reg 470 pF 4 R2 Vout 5.0V/500mA 470uF

+

100uH

1.0uH Vout
+

R1

25k

36k

CO

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
Document number: DS31004 Rev. 6 - 2

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AP34063

Typical Applications Circuit (cont.)

(3) Voltage Inverting Converter

S Q

Q2 Q1 2

R 7

Ipk Rsc 0.26 Vin 4.5V to 6.0V

+

L CT Osc

100 uH

3 VC
C + _ +

470uF

Comp.

1.25V Ref Reg 4

680 pF

B240

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
Document number: DS31004 Rev. 6 - 2

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AP34063 Absolute Maximum Ratings (@TA = +25C, unless otherwise specified.)

Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time.

Symbol VCC VIR VC(SWITCH) VE(SWITCH) VCE(SWITCH) VC(DRIVER) IC(DRIVER) ISW PD JA Thermal Resistance JC TMJ TOP Tstg
Notes:

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 (Note 4) SO-8: TA = +25C PDIP-8: TA = +25C SO-8 PDIP-8 SO-8 PDIP-8

Value 40 -0.3 to +40 40 40 40 40 100 1.6 600 1.25 117 138 19 25 +150 0 to +105 -65 to +150

Unit V V V V V V mA A mW W

C/W

Maximum Junction Temperature (Note 5) Operating Junction Temperature Range Storage Temperature Range

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 (VCC = 5.0V, unless otherwise specified.)

Symbol OSCILLATOR fOSC ICHG IDISCHG IDISCHG / ICHG Parameter Frequency (VPIN 5 = 0V, CT = 1.0F, 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) Min 24 24 140 5.2 300 Typ 33 30 200 6.5 400 Max 42 42 260 7.5 450 Unit kHz A A mV

Vipk (SENSE) Current Limit Sense Voltage (ICHG = IDISCHG, TA = +25C) OUTPUT SWITCH (Note 3) Saturation Voltage, Darlington Connection VCE (sat) (ISW = 1.0A, Pins 1, 8 connected) Saturation Voltage, Darlington Connection VCE (sat) (ISW = 1.0A, ID = 50mA, Forced 20) hFE DC Current Gain (ISW = 1.0A, VCE = 5.0V, TA = +25C) IC(off) Collector Off-State Current (VCE = 40V) COMPARATOR Vth Threshold Voltage TA = +25C TA = 0C to +70C

50 1.225 1.21

1.0 0.45 75 0.01 1.25 1.4

1.3 0.7 100 1.275 1.29 6.0

V V A V mV

RegLINE Threshold Voltage Line Regulation (VCC = 3.0V to 40V) TOTAL DEVICE ICC Supply Current (VCC = 5.0V to 40V, CT =1.0F, Pin 7 = VCC, VPIN 5 > VTH Pin 2 = Gnd, remaining pins open)

3.5

mA

AP34063
Document number: DS31004 Rev. 6 - 2

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AP34063

Representative Schematic Diagram

Drive Collector 8 1 Switch Collector

S Q

Q2 Q1 100 2 Switch Emitter

R Ipk Sense 7

Ipk Oscillator 6 VCC

CT

Comparator + _ 1.25V Reference Regulator

Timing Capacitor

Comparator Inverting Input

Gnd

(Bottom View)

AP34063
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AP34063

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

1.25

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

10

AP34063
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AP34063

Design Formula Table

Calculation tON / tOFF ( tON + tOFF ) tOFF tON CT IPK (switch) RSC L (MIN) CO 9 tON tOFF Step-Up VOUT + VF VIN(MIN) VIN(MIN) VSAT 1/f tON + tOFF +1 tON tOFF -5 Step-Down VOUT + VF VIN(MIN) VSAT vOUT 1/f tON + tOFF +1 tON tOFF Voltage-Inverting I VOUT l + VF VIN(MIN) VSAT 1/f tON + tOFF +1

( tON +tOFF ) tOFF 4.0 10 tON 2IOUT(MAX) (tON / tOFF +1) 0.3 / IPK (SWITCH) ( VIN(MIN) VSAT ) IPK (SWITCH) IOUT tON VRIPPLE (pp) tON(MAX) -5

( tON +tOFF ) tOFF 4.0 10 tON 2IOUT(MAX) 0.3 / IPK (SWITCH) (VIN(MIN) VSAT VOUT) IPK (SWITCH) 8VRIPPLE (pp) tON(MAX) 9

( tON +tOFF ) tOFF -5 4.0 10 tON 2IOUT(MAX) (tON / tOFF +1) 0.3 / IPK (SWITCH) ( VIN(MIN) VSAT ) IPK (SWITCH) IOUT tON VRIPPLE (pp) tON(MAX)

IPK (SWITCH) (tON + tOFF)

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.

Ordering Information
AP 34063 XX X - X

Package S8 : SO-8 N8 : PDIP-8

Lead Free L : Lead Free G : Green

Packing U : Tube 13 : Tape & Reel

Part Number
Pb
Lead-Free

Package Code S8 S8 N8

Packaging SO-8 SO-8 PDIP-8

Pb
Lead-Free

AP34063S8L-13 AP34063S8G-13 AP34063N8L-U

Tube Part Number Quantity Suffix NA NA NA NA 60 -U

13 Tape and Reel Quantity 2500/Tape & Reel 2500/Tape & Reel NA Part Number Suffix -13 -13 NA

AP34063
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AP34063 Marking Information

(1) SO-8

( Top View )
8 5

Logo Part No.

AP34063 YY WW X X
1 4

L : Lead Free G : Green Internal code Xth week = 01~52 Year : "08" = 2008 "09" = 2009
~

(2)

PDIP-8

( Top View )
8 5

Logo Part No.

AP34063 YY WW X X
1 4

L : Lead Free Internal code Xth week = 01~52 Year : "08" = 2008 "09" = 2009
~

AP34063
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AP34063 Package Outline Dimensions (All dimensions in mm.)

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. (1) SO-8

E1 E A1 L

Gauge Plane Seating Plane

Detail A
h 45 A2 A A3 e D b 7~9

Detail A

SO-8 Dim Min Max A 1.75 A1 0.10 0.20 A2 1.30 1.50 A3 0.15 0.25 b 0.3 0.5 D 4.85 4.95 E 5.90 6.10 E1 3.85 3.95 e 1.27 Typ h 0.35 L 0.62 0.82 0 8 All Dimensions in mm

(2) PDIP-8
A

0.254

L G C N D F J M

K H

PDIP-8 Dim Min Max A 9.02 9.53 B 6.15 6.35 C 3.10 3.50 D 0.36 0.56 F 1.40 1.65 G 2.54 typ. H 0.71 0.97 J 0.20 0.36 K 2.92 3.81 L 7.62 8.26 M 15 N 0.38 (min) All Dimensions in mm

AP34063
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AP34063 Suggested Pad Layout

Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.

(1) SO-8
X

C1 C2 Y

Dimensions X Y C1 C2

Value (in mm) 0.60 1.55 5.4 1.27

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