MC34063EBN STMicroelectronics, MC34063EBN Datasheet

IC CTRL CIRCUIT DC-DC CONV 8-DIP

MC34063EBN

Manufacturer Part Number
MC34063EBN
Description
IC CTRL CIRCUIT DC-DC CONV 8-DIP
Manufacturer
STMicroelectronics
Type
Step-Down (Buck), Step-Up (Boost), Invertingr
Datasheet

Specifications of MC34063EBN

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.25 ~ 38 V
Current - Output
1.5A
Frequency - Switching
100kHz
Voltage - Input
3 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Applications
Controller, DCDC Converting
Mounting Style
Through Hole
Efficiency
89 %
Input / Supply Voltage (max)
50 V
Input / Supply Voltage (min)
1.5 V
Load Regulation
10 mV
Maximum Operating Temperature
+ 125 C
Maximum Power Dissipation
1.25 W.
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 125 C
Supply Current
1.5 mA
Switching Frequency
24 KHz to 42 KHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-7414-5
MC34063EBN

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Part Number:
MC34063EBN
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MC34063EBN
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Features
Description
The MC34063A/E series is a monolithic control
circuit delivering the main functions for DC/DC
voltage converting.
The device contains an internal temperature
compensated reference, comparator, duty cycle
controlled oscillator with an active current limit
circuit, driver and high current output switch.
Output voltage is adjustable through two external
resistors with a 2 % reference accuracy.
Employing a minimum number of external
components the MC34063A/E devices series is
Table 1.
1. The "A" version is not recommended for new designs.
November 2007
Output switch current in excess of 1.5 A
2 % reference accuracy
Low quiescent current: 2.5 mA (typ.)
Operating from 3 V to 40 V
Frequency operation to 100 kHz
Active current limiting
Device summary
MC34063ABN
MC34063ACN
MC34063EBN
MC34063ECN
DIP-8
(1)
(1)
Order codes
Rev 10
MC34063AB - MC34063AC
MC34063EB - MC34063EC
DC/DC converter control circuits
designed for step-down, step-up and voltage-
inverting applications.
DIP-8
MC34063ECD-TR
MC34063ABD-TR
MC34063ACD-TR
MC34063EBD-TR
SO-8
SO-8
www.st.com
1/23
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Related parts for MC34063EBN

MC34063EBN Summary of contents

Page 1

... Employing a minimum number of external components the MC34063A/E devices series is Table 1. Device summary DIP-8 MC34063ABN MC34063ACN MC34063EBN MC34063ECN 1. The "A" version is not recommended for new designs. November 2007 MC34063AB - MC34063AC MC34063EB - MC34063EC DC/DC converter control circuits designed for step-down, step-up and voltage- inverting applications ...

Page 2

Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

Diagram Figure 1. Block diagram 3/23 ...

Page 4

Pin configuration Figure 2. Pin connections Table 2. Pin description Pin n° Symbol 1 SWC 2 SWE GND 5 CII DRC 4/23 Name and function Switch collector Switch emitter ...

Page 5

Maximum ratings Table 3. Absolute maximum ratings Symbol V Power supply voltage CC V Comparator input voltage range IR V Switch collector voltage SWC V Switch emitter voltage (V SWE V Switch collector to emitter voltage CE V Driver ...

Page 6

Electrical characteristics (Refer to the test circuits, V Note 2) Table 5. Oscillator Symbol Parameter f Frequency OSC I Charge current CHG I Discharge current DISCHG Discharge to charge I /I DISCHG CHG current ratio V Current limit sense ...

Page 7

Table 8. Total device Symbol Parameter I Supply current CC V Start-up voltage (Note START-UP Note: 1 Maximum package power dissipation limit must be observed °C, T LOW HIGH T = -40 °C, T LOW HIGH ...

Page 8

Typical performance characteristics Figure 3. Emitter follower configuration output saturation voltage vs emitter current Figure 5. Common emitter configuration output switch saturation voltage vs collector current 8/23 Figure 4. Output switch ON-OFF time vs oscillator timing capacitor Figure 6. ...

Page 9

Figure 7. Power collector emitter saturation voltage ( temperature CEsat Figure 9. Reference voltage vs temperature Figure 11. Supply current vs temperature Figure 8. Current limit sense voltage (V vs temperature Figure 10. Bias current vs temperature Figure ...

Page 10

Typical application circuit Figure 13. Step-up converter Figure 14. Printed evaluation board Table 9. Test condition (V OUT Test Line Regulation Load Regulation Output Ripple ...

Page 11

Figure 15. Step-down converter Figure 16. Printed evaluation board Table 10. Test condition (V OUT Test Line regulation Load regulation Output ripple ...

Page 12

Figure 17. Voltage inverting converter Figure 18. Printed evaluation board Table 11. Test condition (V OUT Test Line regulation Load regulation Output ripple ...

Page 13

Table 12. Calculation Step-Up Parameter (Discontinuous mode OUT t /t ------------------------------------------------ on off min ( max 1/f on off C 4.5x10 PK(switch) out(max) R 0.3/I SC PK(switch) I out ...

Page 14

Figure 19. Step-up with external NPN switch Figure 20. Step-down with external NPN switch 14/23 ...

Page 15

Figure 21. Step-down with external PNP switch Figure 22. Voltage inverting with external NPN switch 15/23 ...

Page 16

Figure 23. Voltage inverting with external PNP saturated switch Figure 24. Dual output voltage 16/23 ...

Page 17

Figure 25. Higher output power, higher input voltage 17/23 ...

Page 18

Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner ...

Page 19

Plastic DIP-8 mechanical data mm. Dim. Min. Typ. A 3.3 a1 0.7 B 1.39 B1 0.91 b 0 8.8 e 2.54 e3 7. 3.3 Z 0.44 inch. Max. Min. Typ. 0.130 ...

Page 20

Dim. Min. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4. 5.80 h 0.25 L 0.40 k ddd 20/23 SO-8 mechanical data mm. Typ. Max. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 1.27 ...

Page 21

Tape & reel SO-8 mechanical data mm. Dim. Min. Typ 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 inch. Max. Min. Typ. 330 13.2 0.504 0.795 2.362 22.4 8.5 0.319 ...

Page 22

Revision history Table 13. Document revision history Date Revision 22-Jun-2004 9 20-Nov-2007 10 22/23 Changes Added Table 1. ...

Page 23

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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