SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
D
D
D
D
D Precision Internal Reference . . . 2%
D Short-Circuit Current Limiting
D Low Standby Current
Wide Input Voltage Range . . . 3 V to 40 V
High Output Switch Current . . . Up to 1.5 A
Adjustable Output Voltage
Oscillator Frequency . . . Up to 100 kHz
D (SOIC) OR P (PDIP) PACKAGE
(TOP VIEW)
Switch Collector
Switch Emitter
Timing Capacitor
GND
1
8
2
7
3
6
4
5
Driver Collector
Ipk
VCC
Comparator Inverting Input
DRJ (QFN) PACKAGE
(TOP VIEW)
Switch Collector
1
Switch Emitter
2
Timing Capacitor
3
GND
4
VOUT
8
Driver Collector
7
Ipk
6
VCC
5
Comparator Inverting Input
description/ordering information
The MC33063A and MC34063A are easy-to-use ICs containing all the primary circuitry needed for building
simple dc-dc converters. These devices primarily consist of an internal temperature-compensated reference,
a comparator, an oscillator, a PWM controller with active current limiting, a driver, and a high-current output
switch; thus, the devices require minimal external components to build converters in the boost, buck, and
inverting topologies.
The MC33063A is characterized for operation from −40°C to 85°C, while the MC34063A is characterized for
operation from 0°C to 70°C.
ORDERING INFORMATION
PACKAGE†
TA
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP (P)
Tube of 50
MC33063AP
MC33063AP
QFN (DRJ)
Reel of 1000
MC33063ADRJR
PREVIEW
Tube of 75
MC33063AD
Reel of 2500
MC33063ADR
PDIP (P)
Tube of 50
MC34063AP
MC34063AP
QFN (DRJ)
Reel of 1000
MC34063ADRJR
PREVIEW
Tube of 75
MC34063AD
Reel of 2500
MC34063ADR
−40°C to 85°C
SOIC (D)
0°C to 70°C
SOIC (D)
M33063A
M34063A
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2005, Texas Instruments Incorporated
!"#$%&'#! ( )*$$+!' &( #" ,*-.)&'#! /&'+
$#/*)'( )#!"#$% '# (,+)")&'#!( ,+$ '0+ '+$%( #" +1&( !('$*%+!'(
('&!/&$/ 2&$$&!'3
$#/*)'#! ,$#)+((!4 /#+( !#' !+)+((&$.3 !).*/+
'+('!4 #" &.. ,&$&%+'+$(
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1
SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
functional block diagram
Drive
Collector
8
1
Switch
Collector
2
Switch
Emitter
3
Timing
Capacitor
Q2
S Q
Q1
R
100 Ω
Ipk
Sense
7
Ipk
Oscillator
CT
6
VCC
+
_
Comparator
Inverting
Input
1.25-V
Reference
Regulator
4
5
GND
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Comparator Inverting Input voltage range, VIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 40 V
Switch Collector voltage, VC(switch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Switch Emitter voltage (VPIN1 = 40 V), VE(switch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Switch Collector to Switch Emitter voltage, VCE(switch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Driver Collector voltage, VC(driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Driver Collector current, IC(driver) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA
Switch current, ISW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A
Package thermal impedance, θJA (see Notes 1 and 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
DRJ package . . . . . . . . . . . . . . . . . . . . . . . TBD°C/W
P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W
Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) − TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
2
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SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
recommended operating conditions
VCC
TA
Supply voltage
Operating free-air temperature range
MIN
MAX
3
40
MC33063A
−40
85
MC34063A
0
70
UNIT
V
°C
electrical characteristics, VCC = 5 V, TA = full operating range (unless otherwise noted) (see block
diagram)
OSCILLATOR
PARAMETER
fosc
Ichg
Oscillator frequency
Idischg
Idischg/Ichg
Discharge current
VIpk
TEST CONDITIONS
TA
MIN
TYP
MAX
UNIT
VPIN5 = 0 V, CT = 1 nF
VCC = 5 V to 40 V
25°C
24
33
42
kHz
25°C
24
35
42
µA
25°C
140
220
260
µA
Discharge-to-charge current ratio
VCC = 5 V to 40 V
VPIN7 = VCC
25°C
5.2
6.5
7.5
Current-limit sense voltage
Idischg = Ichg
25°C
250
300
350
mV
MIN
TYP
MAX
UNIT
Charge current
OUTPUT SWITCH (see Note 3)
PARAMETER
TEST CONDITIONS
TA
VCE(sat)
Saturation voltage – Darlington
connection
ISW = 1 A, pins 1 and 8 connected
Full range
1
1.3
V
VCE(sat)
Saturation voltage – non-Darlington
connection (see Note 4)
ISW = 1 A, RPIN8 = 82 Ω to VCC,
forced 20
Full range
0.45
0.7
V
DC current gain
ISW = 1 A, VCE = 5 V
VCE = 40 V
100
µA
hFE
IC(off)
Collector off-state current
25°C
50
Full range
75
0.01
NOTES: 3. Low duty-cycle pulse testing is used to maintain junction temperature as close to ambient temperature as possible.
4. In the non-Darlington configuration, if the output switch is driven into hard saturation at low switch currents (≤300 mA) and high driver
currents (≥30 mA), it may take up to 2 µs for the switch to come out of saturation. This condition effectively shortens the off time at
frequencies ≥30 kHz, becoming magnified as temperature increases. The following output drive condition is recommended in the
non-Darlington configuration:
Forced of output switch = IC,SW / (IC,driver − 7 mA) ≥ 10,
where 7 mA is required by the 100-Ω resistor in the emitter of the driver to forward bias the Vbe of the switch.
COMPARATOR
PARAMETER
TEST CONDITIONS
Vth
Threshold voltage
∆Vth
IIB
Threshold-voltage line regulation
Input bias current
VCC = 5 V to 40 V
VIN = 0 V
TA
MIN
TYP
MAX
25°C
1.225
1.25
1.275
Full range
1.21
1.29
UNIT
V
Full range
1.4
5
mV
Full range
−20
−400
nA
MIN
MAX
UNIT
TOTAL DEVICE
PARAMETER
ICC
Supply current
TEST CONDITIONS
VCC = 5 V to 40 V, CT = 1 nF,
VPIN7 = VCC, VPIN5 > Vth,
VPIN2 = GND, all other pins open
POST OFFICE BOX 655303
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TA
Full range
4
mA
3
SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
TYPICAL CHARACTERISTICS
100
1.8
VCC = 5 V
Pin 7 = VCC
Pin 5 = GND
TA = 25°C
VCE(SAT), Output Switch
Saturation Voltage (V)
tON-OFF, Output Switch
On-Off Time (µs)
1000
tON
tOFF
10
1
0.01
0.1
1
CT, Oscillator Timing Capacitor (nF)
1.5
1.4
1.3
1.2
1.1
0.4
340
1.0
Force Beta = 20
0.6
VCC = 5 V
Pin 7 = VCC
Pin 2, 3, 5 = GND
TA = 25°C
0.2
0.2
0.4 0.6 0.8 1.0
1.2
1
IC, Collector Current (A)
1.4
1.6
Figure 3. Output Switch Saturation Voltage vs
Collector Current (Common-Emitter Configuration)
260
240
220
200
−50
−25
ICC, Supply Current (mA)
2.0
1.6
CT = 1 nF
Pin 7 = VCC
Pin 2 = GND
TA = 25°C
0.0
5
10
15
20
25
30
VCC, Supply Voltage (V)
35
40
Figure 5. Standby Supply Current vs
Supply Voltage
4
POST OFFICE BOX 655303
0
25
50
75
100
TA, Ambient Temperature (°C)
125
Figure 4. Current-Limit Sense Voltage vs
Temperature
2.4
0
1.6
280
2.8
0.4
1.4
300
3.2
0.8
1.2
320
3.6
1.2
1
1.0
VCC = 5 V
ICHG=DISCHG
I
360
0.4
0.8
380
Darlington Connection
0.8
0.6
Figure 2. Output Switch Saturation Voltage vs
Emitter Current (Emitter-Follower Configuration)
1.2
0.0
0
0.0
0
0.2
IE, Emitter Current (A)
VIPK, Current Limit
Sense Voltage (mV)
VCE(SAT), Output Switch
Saturation Voltage (V)
1.6
1.0
1
0
0.0
10
Figure 1. Output Switch On-Off Time vs
Oscillator Timing Capacitor
1.4
VCC = 5 V
Pin 1, 7, 8 = VCC
Pin 3, 5 = GND
TA = 25°C
1.7
• DALLAS, TEXAS 75265
SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
TYPICAL CHARACTERISTICS
170 µH
L
1
8
180 Ω
S Q
Q2
1N5819
Q1
R
2
7
Ipk
RSC
0.22 Ω
Vin
12 V
6
+
3
CT
VCC
+
_ Comparator
100 µF
1.25-V
Reference
Regulator
CT
1500 pF
4
5
1.0 µH
R2
R1
2.2 kΩ
CO
330 µF
47 kΩ
+
Vout
28 V/175 mA
Vout
100 µF
+
Optional Filter
TEST
RESULTS
CONDITIONS
Line Regulation
VIN = 8 V to 16 V, IO = 175 mA
30 mV ± 0.05%
Load Regulation
VIN = 12 V, IO = 75 mA to 175 mA
10 mV ± 0.017%
Output Ripple
VIN = 12 V, IO = 175 mA
400 mVPP
Efficiency
VIN = 12 V, IO = 175 mA
87.7%
Output Ripple With Optional Filter
VIN = 12 V, IO = 175 mA
40 mVPP
Figure 6. Step-Up Converter
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5
SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
TYPICAL CHARACTERISTICS
R*
8
1
7
7
2
1
Vout
2
RSC
RSC
Vin
8
Vout
6
Vin
6
*R " 0 for constant Vin
2a. External npn Switch
2b. External pnp Saturated Switch (see Note 5)
NOTE A: If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤300 mA) and high driver currents
(≥30 mA), it may take up to 2 µs to come out of saturation. This condition will shorten the off time at frequencies ≥30 kHz and is magnified
at high temperatures. This condition does not occur with a Darlington configuration because the output switch cannot saturate. If a
non-Darlington configuration is used, the output drive configuration in Figure 2b is recommended.
Figure 7. External Current-Boost Connections for IC Peak Greater Than 1.5 A
6
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SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
TYPICAL CHARACTERISTICS
1
8
S Q
Q2
Q1
R
2
7
Vin
25 V
Oscillator
6
+
1N5819
Ipk
RSC
0.33 Ω
CT
3
VCC
+
_ Comparator
100 µF
1.25-V
Reference
Regulator
L
220 µH
CT
470 pF
4
5
1.0 µH
R2
R1
1.2 kΩ
Vout
5 V/500 mA
3.8 kΩ
CO
470 µF
+
Vout
100 µF
+
Optional Filter
TEST
RESULTS
CONDITIONS
Line Regulation
VIN = 15 V to 25 V, IO = 500 mA
12 mV ± 0.12%
Load Regulation
VIN = 25 V, IO = 50 mA to 500 mA
3 mV ± 0.03%
Output Ripple
VIN = 25 V, IO = 500 mA
120 mVPP
Short-Circuit Current
VIN = 25 V, RL = 0.1 Ω
1.1 A
Efficiency
VIN = 25 V, IO = 500 mA
83.7%
Output Ripple With Optional Filter
VIN = 25 V, IO = 500 mA
40 mVPP
Figure 8. Step-Down Converter
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7
SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
TYPICAL CHARACTERISTICS
8
1
1
8
7
2
Vout
RSC
RSC
Vin
7
2
Vout
6
Vin
6
4b. External pnp Saturated Switch
4a. External npn Switch
Figure 9. External Current-Boost Connections for IC Peak Greater Than 1.5 A
8
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SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
TYPICAL CHARACTERISTICS
1
8
S Q
Q2
Q1
R
2
7
Vin
Oscillator
6
4.5 V to
6.0 V
+
L
88 µH
Ipk
RSC
0.24 Ω
CT
3
VCC
+
_ Comparator
100 µF
1.25-V
Reference
Regulator
1N5819
+
1500 pF
4
5
1.0 µH
R1
R2
8.2 kΩ
Vout
−12 V/100 mA
953 Ω
CO
1000 µF
Vout
100 µF
+
+
Optional Filter
TEST
RESULTS
CONDITIONS
Line Regulation
VIN = 4.5 V to 6 V, IO = 100 mA
3 mV ± 0.12%
Load Regulation
VIN = 5 V, IO = 10 mA to 100 mA
0.022 V ± 0.09%
Output Ripple
VIN = 5 V, IO = 100 mA
500 mVPP
Short-Circuit Current
VIN = 5 V, RL = 0.1 Ω
910 mA
Efficiency
VIN = 5 V, IO = 100 mA
62.2%
Output Ripple With Optional Filter
VIN = 5 V, IO = 100 mA
70 mVPP
Figure 10. Voltage-Inverting Converter
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9
SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
TYPICAL CHARACTERISTICS
8
1
1
8
Vout
7
2
7
2
Vout
Vin
6
Vin
6a. External npn Switch
6
6b. External pnp Saturated Switch
Figure 11. External Current-Boost Connections for IC Peak Greater Than 1.5 A
10
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SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
APPLICATION INFORMATION
calculations of key parameters
CALCULATION
ton/toff
(ton + toff)
toff
ton
V out ) V F * V in(min)
V in(min) * V sat
1
f
t on ) t off
t on
t
off
ǒt on
*5
4
Ipk(switch)
2I out(max)
Rsc
0.3
I pk(switch)
CO
10
V in * V sat
1
f
t on ) t off
ǒ
ǒt on
t on
4
Ǔ
t on
)1
t off
ǒ
ǒVin(min) * VsatǓ
9
I outt on
V rippleǒppǓ
I pk(switch)
Ǔ
t on(max)
ŤV Ť ) V
out
F
1
f
t on ) t off
t on
t
off
) t offǓ * t off
VOLTAGE INVERTING
V out ) V F
V in(min) * V sat * V out
) 1
CT
L(min)
STEP DOWN
STEP UP
t on
t
off
) 1
) t offǓ * t off
10
*5
t on
) 1
ǒt on
) t offǓ * t off
4
10 *5 t on
ǒ
2I out(max)
2I out(max)
0.3
I pk(switch)
0.3
I pk(switch)
ǒ
I pk(switch)
I pk(switch)ǒt on ) t offǓ
8V rippleǒppǓ
POST OFFICE BOX 655303
Ǔ
ǒVin(min) * Vsat * VoutǓ
• DALLAS, TEXAS 75265
t on(max)
ǒ
9
Ǔ
t on
)1
t off
Ǔ
ǒVin(min) * VsatǓ
I pk(switch)
t on(max)
I outt on
V rippleǒppǓ
11
PACKAGE OPTION ADDENDUM
www.ti.com
9-Mar-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
Lead/Ball Finish
MSL Peak Temp (3)
MC33063AD
ACTIVE
SOIC
D
8
75
Pb-Free
(RoHS)
CU NIPDAU
Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
MC33063ADR
ACTIVE
SOIC
D
8
2500
Pb-Free
(RoHS)
CU NIPDAU
Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
MC33063AP
ACTIVE
PDIP
P
8
50
Pb-Free
(RoHS)
CU NIPDAU
Level-NC-NC-NC
MC34063AD
ACTIVE
SOIC
D
8
75
Pb-Free
(RoHS)
CU NIPDAU
Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
MC34063ADR
ACTIVE
SOIC
D
8
2500
Pb-Free
(RoHS)
CU NIPDAU
Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
MC34063AP
ACTIVE
PDIP
P
8
50
Pb-Free
(RoHS)
CU NIPDAU
Level-NC-NC-NC
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional
product content details.
None: Not yet available Lead (Pb-Free).
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens,
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
MECHANICAL DATA
MPDI001A – JANUARY 1995 – REVISED JUNE 1999
P (R-PDIP-T8)
PLASTIC DUAL-IN-LINE
0.400 (10,60)
0.355 (9,02)
8
5
0.260 (6,60)
0.240 (6,10)
1
4
0.070 (1,78) MAX
0.325 (8,26)
0.300 (7,62)
0.020 (0,51) MIN
0.015 (0,38)
Gage Plane
0.200 (5,08) MAX
Seating Plane
0.010 (0,25) NOM
0.125 (3,18) MIN
0.100 (2,54)
0.021 (0,53)
0.015 (0,38)
0.430 (10,92)
MAX
0.010 (0,25) M
4040082/D 05/98
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm
POST OFFICE BOX 655303
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Following are URLs where you can obtain information on other Texas Instruments products and application
solutions:
Products
Applications
Amplifiers
amplifier.ti.com
Audio
www.ti.com/audio
Data Converters
dataconverter.ti.com
Automotive
www.ti.com/automotive
DSP
dsp.ti.com
Broadband
www.ti.com/broadband
Interface
interface.ti.com
Digital Control
www.ti.com/digitalcontrol
Logic
logic.ti.com
Military
www.ti.com/military
Power Mgmt
power.ti.com
Optical Networking
www.ti.com/opticalnetwork
Microcontrollers
microcontroller.ti.com
Security
www.ti.com/security
Telephony
www.ti.com/telephony
Video & Imaging
www.ti.com/video
Wireless
www.ti.com/wireless
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