UC33063AG-S08-R_技术文档

UNISONIC TECHNOLOGIES CO., LTD

UC33063A

LINEAR INTEGRATED CIRCUIT

DC TO DC CONVERTER

CONTROLLER



DESCRIPTION

The UTC UC33063A is a monolithic regulator subsystem,

intended for use as DC to DC converter. This device contains a

temperature compensated band gap reference, a duty-cycle

control oscillator, driver and high current output switch. It can be

used for step down, step-up or inverting switching regulators as

well as for series pass regulators.



FEATURES

* Operation from 3.0V to 40V.

* Short Circuit Current Limiting.

* Low Standby Current.

* Output Switch Current of 1.5A without External Transistors.

* Frequency of Operation from 100Hz to 100kHz.

* Step-up, Step-down or Inverting Switch Regulators.

 ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

UC33063AL-D08-T

-

UC33063AG-D08-T

UC33063AG-S08-R

DIP-8

Tube

SOP-8

Tape Reel



MARKING

DIP-8

SOP-8

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UC33063A

LINEAR INTEGRATED CIRCUIT



PIN CONFIGURATION



PIN DESCRIPTION

PIN NO

PIN NAME

Switch Collector

Switch Emitter

Timing Capacitor

GND

I/O

I

DESCRIPTION

1

2

3

4

Internal Darlington pairs TI collector

O

Internal Darlington pairs TI emitter

The value of selected capacitor controls the internal oscillator run rate

Comparator Inverting

Input

Inverting input of comparator which can set & initiate the Darlington pairs

output switch

5

6

7

8

I

V_CC

Current sense input to monitor the voltage drop across an external

resistor placed in series with V_CC

I_PEAKSense

I

Driver Collector

Internal Darlington pairs TI collector



BLOCK DIAGRAM

E

T2

S

Switch Collector

Switch Emitter

Timing Capacitor

GND

1

2

3

4

Q

8

7

6

5

Drive Collector

IPEAK Sense

Vcc

R

T1

D

C

Is

A

CT

OSCILLATOR

COMP.

Comparator Inverting

Input

1.25VREF

B

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UC33063A

LINEAR INTEGRATED CIRCUIT



ABSOLUTE MAXIMUM RATINGS (T_A=25C, unless otherwise specified)

PARAMETER

SYMBOL

V_CC

RATINGS

40

UNIT

V

Supply Voltage

Comparator Input Voltage Range

Switch Collector Voltage

Switch Emitter Voltage

V_IN(COMP)

V_C(SW)

V_E(SW)

V_CE(SW)

V_C(DR)

I_SW

-0.3 ~ +40

40

V

40

V

Switch Collector to Emitter Voltage

Driver Collector Voltage

Switch Current

40

V

40

V

1.5

A

DIP-8

1250

800

Power Dissipation (Ta=25C)

P_D

mW

SOP-8

Junction Temperature

Operating Temperature

Storage Temperature

T_J

+150

-40~ +90

-65 ~ +150

C

T_OPR

T_STG

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



THERMAL DATA

PARAMETER

SYMBOL

RATINGS

100

UNIT

DIP-8

Junction to Ambient

θ_JA

C/W

SOP-8

150



ELECTRICAL CHARACTERISTICS (V_CC=5.0V, T_A=-40~+90C, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Oscillator

Charging Current

I_CHG

I_DISCHG

V_OSC

K

V_CC=5 to 40V, Ta=25C

Ta=25C

V₇=V_CC, Ta=25C

I_CHG=I_DISCHG, Ta=25C

22

31

42

A

Discharging Current

140 190 260 A

Oscillator Amplitude

0.5

6.1

V

Discharge to Charge Current Ratio

Current limit Sense Voltage

Output Switch

5.2

7.5

V_SENSE

250 300 350 mV

Saturation Voltage 1(Note)

Saturation Voltage 2(Note)

DC Current Gain(Note)

Collector Off State Current(Note)

Comparator

V_CE(SAT)1I_SW=1.0A, V_C(DRIVER)=V_C(SW)

V_CE(SAT)2I_SW=1.0A, V_C(DRIVER)=50mA

0.95 1.3

0.45 0.7

180

V

G_{I (DC)}

I_C(OFF)

I_SW=1.0A, V_CE=5.0V, Ta=25C

V_CE=40.0V, Ta=25C

50

0.01 100 A

Threshold Voltage

V_THD

I_I(BIAS)

1.21 1.24 1.29

V

Threshold Voltage Line Regulation

Input Bias Current

V_CC=3 ~ 40V

V_IN=0V

2.0

50

5.0 mV

400 nA

Total Device

V

_CC=5~40V, C_T=0.001

Supply Current

I_CC

2.7

4.0 mA

V₇=V_CC, V_C>V_THD, Pin2=GND

Note: Output switch tests are performed under pulsed conditions to minimize power dissipation.

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UC33063A

LINEAR INTEGRATED CIRCUIT



STEP-UP CONVERTER

170μH

L

8

7

1

2

180

S Q

R

Q2

Q1

1N5819

I_PK

C_T

R_SC0.22

V^IN12V

O_SC

3

C_T

6

5

V_CC

+

100

1.25V

R^EFREG

+

-

Comp.

1500pF

4

1.0μH

R₂

47k

V^OUT

28V/175mA

V^OUT

+

R₁2.2k

100

330

C_O

Optional Filter

Test

Conditions

V_IN= 8.0V ~ 16V, I_OUT= 175mA

Results

30mV = ±0.05%

10mV = ±0.017%

400mVp-p

Line Regulation

Load Regulation

Output Ripple

Efficiency

V_IN= 12V, I_OUT= 75mA ~ 175mA

V_IN= 12V, I_OUT= 175mA

87.7%

Output Ripple With Optional Filter

40mVp-p

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UC33063A

LINEAR INTEGRATED CIRCUIT



STEP-DOWN CONVERTER(Cont.)

Test

Line Regulation

Conditions

Results

V_IN= 15V ~ 25V, I_OUT= 500mA

V_IN= 25V, I_OUT= 50mA ~ 500mA

V_IN= 25V, I_OUT= 500mA

V_IN= 25V, R_L= 0.1Ω

12mV = ±0.12%

3.0mV = ±0.03%

120mVp-p

1.1A

Load Regulation

Output Ripple

Short Circuit Current

Efficiency

V_IN= 25V, I_OUT= 500mA

83.7%

Output Ripple With Optional Filter

40mVp-p

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UC33063A

LINEAR INTEGRATED CIRCUIT



VOLTAGE INVERTING CONVERTER

Test

Line Regulation

Conditions

Results

V_IN= 4.5V ~ 6.0V, I_OUT= 100mA

V_IN= 5.0V, I_OUT= 10mA ~ 100mA

V_IN= 5.0V, I_OUT= 100mA

V_IN= 5.0V, R_L= 0.1Ω

3.0mV = ±0.012%

0.022V = ±0.09%

500mVp-p

910mA

Load Regulation

Output Ripple

Short Circuit Current

Efficiency

V_IN= 5.0V, I_OUT= 100mA

62.2%

Output Ripple With Optional Filter

70mVp-p

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UC33063A

LINEAR INTEGRATED CIRCUIT



EXTERNAL CURRENT BOOST CONNECTIONS FOR IC PEAK GREATER THAN 1.5A

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UC33063A

LINEAR INTEGRATED CIRCUIT



TYPICAL CHARACTERISTICS

Emitter Follower Configuration Output

Saturation Voltage versus Emitter Current

Common Emitter Configuration Output Switch

Saturation Voltage versus Coilector Current

1.8

1.4

Darlington

Connection

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1.0

1.2

1.0

0.8

V_CC= 5.0V

Pin 7 = V_CC

0.6

0.4

Pin 2,3,5 = GND

Forced β = 20

V_CC= 5.0V

T_A= 25°С

Pin 1,7,8 = V_CC

Pin 3,5 = GND

T_A= 25°С

0.2

0

0.4 0.6 0.8 1.0 1.2 1.4

0

0.1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.5

0.2

1.6

Emitter Current, I_E(A)

Current Limit Sense Voltage versus

Temperature

Standby Supply Current versus

Supply Voltage

400

380

3.6

3.2

2.8

2.4

2.0

1.6

1.2

0.8

0.4

0

V_CC= 5.0V

I_CHG= dischg

360

340

320

300

280

C_T= 1.0nF

Pin 7 = V_CC

Pin 2 = GND

260

240

220

200

-55 -25

0

25

50

75 100 125

0

5

10 15 20 25 30 35 40

Supply Voltage, V_CC(V)

Ambient Temperaurent, T_A(°С)

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UC33063A

LINEAR INTEGRATED CIRCUIT



DESIGN FORMULA TABLE

CALCULATION

STEP-DOWN

STEP-UP

VOLTAGE-INVERTING

t_ON

t_OFF

V_OUT+ V_F

V_IN- V_CE(SAT)

1

(t_ON+t_{OFF MAX}

)

F_MIN

C_T

I_SW

4x10^-5t_ON

2I_OUT(MAX)

0.3/I_SW

4x10^-5t_ON

R_S

0.3/I_SW

L_(MIN)

C_O

I_OUTt_ON

V_RIPPLE(P-P)

V_CE(SAT)

V_F

- Saturation voltage of the output switch.

- Forward voltage drop of the ringback rectifier.

The following power supply characteristics must be chosen:

V_IN

- Nominal input voltage.

V_OUT

I_OUT

F_MIN

- Desired output voltage, V_OUT=1.25(1+R₂/R₁)

- Desired output current.

- Minimum desired output switching frequency at the selected values for V_INand I_OUT

.

V_RIPPLE(P-P)- Desired peak-to-peak output ripple voltage. In practice, the calculated value will need to be increased

due to the capacitor equivalent series resistance and board layout. The ripple voltage should be kept

to a low value since it will directly effect the line and load regulation.

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

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型号：	UC33063AG-S08-R
厂家：	Unisonic Technologies
描述：	DC TO DC CONVERTER CONTROLLER
文件：	总9页 (文件大小：459K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UC33063AG-S08-R [UTC]

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