ON Semiconductor MC34163, MC33163 Technical data

MC34163, MC33163

3.4 A, Step-Up/Down/ Inverting Switching Regulators

The MC34163 series are monolithic power switching regulators that contain the primary functions required for dc–to–dc converters. This series is specifically designed to be incorporated in step–up, step–down, and voltage–inverting applications with a minimum number of external components.

These devices consist of two high gain voltage feedback comparators, temperature compensated reference, controlled duty cycle oscillator, driver with bootstrap capability for increased efficiency, and a high current output switch. Protective features consist of cycle–by–cycle current limiting, and internal thermal shutdown. Also included is a low voltage indicator output designed to interface with microprocessor based systems.

These devices are contained in a 16 pin dual–in–line heat tab plastic package for improved thermal conduction.

• Output Switch Current in Excess of 3.0 A

• Operation from 2.5 V to 40 V Input

• Low Standby Current

• Precision 2% Reference

• Controlled Duty Cycle Oscillator

• Driver with Bootstrap Capability for Increased Efficiency

• Cycle–by–Cycle Current Limiting

• Internal Thermal Shutdown Protection

• Low Voltage Indicator Output for Direct Microprocessor Interface

• Heat Tab Power Package

• Moisture Sensitivity Level (MSL) Equals 1

Ipk Sense

V

Timing

Capacitor

Gnd

Voltage

Feedback 1

Voltage

Feedback 2

LVI Output

8

7

CC

6

5

4

3

2

1

LVI

OSC

+ +

-

I

Limit

-

+

Control Logic

and Thermal

Shutdown

VFB

+ +

-

+

9

10

11

12

13

14

15

16

Driver Collector

Switch Collector

Gnd

Switch Emitter

Bootstrap Input

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MARKING

DIAGRAMS

16

PDIP–16

P SUFFIX

CASE 648C

1

SO–16W DW SUFFIX CASE 751G

1

x = 3 or 4 A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week

MC3x163P

AWLYYWW

1

16

MC3x163DW

AWLYYWW

1

PIN CONNECTIONS

LVI Output

Voltage Feedback 2

Voltage Feedback 1

Gnd

Timing Capacitor

V

Ipk Sense

116

2

3

4

5

6

7

CC

8

(Top View)

Bootstrap Input

15

Switch Emitter

14

13

Gnd

12

11

Switch Collector

10

Driver Collector

9

ORDERING INFORMATION

Device Package Shipping

MC33163DW SO–16W 47 Units/Rail MC33163DWR2 SO–16W 1000 Tape & Reel MC33163P PDIP–16 MC34163DW SO–16W

25 Units/Rail 47 Units/Rail

This device contains 114 active transistors.

(Bottom View)

Figure 1. Representative Block Diagram

 Semiconductor Components Industries, LLC, 2002

January , 2002 – Rev. 4

MC34163DWR2 SO–16W 1000 Tape & Reel MC34163P PDIP–16 25 Units/Rail

1 Publication Order Number:

MC34163/D

MC34163, MC33163

MAXIMUM RATINGS (Note 1)

Rating

Power Supply Voltage V Switch Collector Voltage Range V Switch Emitter Voltage Range V Switch Collector to Emitter Voltage V Switch Current (Note 2) I Driver Collector Voltage V Driver Collector Current I Bootstrap Input Current Range (Note 2) I Current Sense Input Voltage Range V Feedback and Timing Capacitor Input Voltage Range V Low Voltage Indicator Output Voltage Range V Low Voltage Indicator Output Sink Current I

Thermal Characteristics

P Suffix, Dual–In–Line Case 648C

Thermal Resistance, Junction–to–Air Thermal Resistance, Junction–to–Case (Pins 4, 5, 12, 13)

DW Suffix, Surface Mount Case 751G

Thermal Resistance, Junction–to–Air

Thermal Resistance, Junction–to–Case (Pins 4, 5, 12, 13) Operating Junction Temperature T Operating Ambient Temperature (Note 4)

MC34163 MC33163

Storage Temperature Range T

Symbol Value Unit

CC C(switch) E(switch)

CE(switch)

SW

C(driver)

BS

Ipk (Sense)

in

C(LVI)

(VCC–7.0) to (VCC+1.0) V

40 V

–1.0 to + 40 V

– 2.0 to V

C(switch)

40 V

3.4 A

–1.0 to +40 V

150 mA

–100 to +100 mA

–1.0 to + 7.0 V

–1.0 to + 40 V

10 mA

V

°C/W

R

θ

JA

R

θ

JC

R

θ

JA

R

θ

JC

J

T

A

80 15

94 18

+150 °C

°C

0 to +70

– 40 to + 85

stg

– 65 to +150 °C

ELECTRICAL CHARACTERISTICS (V

= 15 V, Pin 16 = VCC, CT = 620 pF, for typical values TA = 25°C, for min/max values T

CC

the operating ambient temperature range that applies (Note 4), unless otherwise noted.)

Characteristic

Symbol Min Typ Max Unit

OSCILLATOR

Frequency

= 25°C

T

A

Total Variation over V

= 2.5 V to 40 V, and Temperature

CC

Charge Current I Discharge Current I Charge to Discharge Current Ratio I Sawtooth Peak Voltage V Sawtooth Valley Voltage V

f

OSC

chg

dischg

chg/Idischg

OSC(P) OSC(V)

46 45

50

– – 225 – µA – 25 – µA

8.0 9.0 10 – – 1.25 – V – 0.55 – V

FEEDBACK COMPARATOR 1

Threshold Voltage

= 25°C

T

A

Line Regulation (V

= 2.5 V to 40 V, TA = 25°C)

CC

Total Variation over Line, and Temperature

Input Bias Current (V

= 5.05 V) I

FB1

V

th(FB1)

IB(FB1)

4.9 –

4.85

5.05

0.008 –

– 100 200 µA

1. This device series contains ESD protection and exceeds the following tests: Human Body Model 1500 V per MIL–STD–883, Method 3015. Machine Model Method 150 V.

2. Maximum package power dissipation limits must be observed.

3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.

=0°C for MC34163 T

4. T

low

=–40°C for MC33163 = + 85°C for MC33163

=+70°C for MC34163

high

54 55

5.2

0.03

5.25

kHz

V

%/V

V

is

A

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2

MC34163, MC33163

ELECTRICAL CHARACTERISTICS (continued) (V

values T

is the operating ambient temperature range that applies (Note 6), unless otherwise noted.)

A

Characteristic

= 15 V, Pin 16 = VCC, CT = 620 pF, for typical values TA = 25°C, for min/max

CC

Symbol Min Typ Max Unit

FEEDBACK COMPARATOR 2

Threshold Voltage

T

= 25°C

A

Line Regulation (V

= 2.5 V to 40 V, TA = 25°C)

CC

Total Variation over Line, and Temperature

Input Bias Current (V

= 1.25 V) I

FB2

V

th(FB2)

IB(FB2)

1.225 –

1.213

1.25

0.008 –

– 0.4 0 0.4 µA

CURRENT LIMIT COMPARATOR

Threshold Voltage

= 25°C

T

A

Total Variation over V

Input Bias Current (V

= 2.5 V to 40 V, and Temperature

CC

Ipk (Sense)

= 15 V) I

V

th(Ipk Sense)

IB(sense)

–

230

250

–

– 1.0 20 µA

DRIVER AND OUTPUT SWITCH (Note 5)

Sink Saturation Voltage (I

Non–Darlington Connection (R

Darlington Connection (Pins 9, 10, 11 connected) Collector Off–State Leakage Current (VCE = 40 V) I Bootstrap Input Current Source (VBS = VCC + 5.0 V) I Bootstrap Input Zener Clamp Voltage (IZ = 25 mA) V

= 2.5 A, Pins 14, 15 grounded)

SW

= 110 Ω to VCC, ISW/I

Pin 9

DRV

≈ 20)

V

CE(sat)

C(off)

source(DRV)

Z

– –

0.6

1.0

– 0.02 100 µA

0.5 2.0 4.0 mA

VCC + 6.0 VCC + 7.0 VCC + 9.0 V

LOW VOLTAGE INDICATOR

Input Threshold (V Input Hysteresis (V Output Sink Saturation Voltage (I Output Off–State Leakage Current (VOH = 15 V) I

Increasing) V

FB2

Decreasing) V

FB2

= 2.0 mA) V

sink

th H

OL(LVI)

OH

1.07 1.125 1.18 V – 15 – mV – 0.15 0.4 V – 0.01 5.0 µA

TOTAL DEVICE

Standby Supply Current (V

= 2.5 V to 40 V, Pin 8 = VCC,

CC

I

CC

– 6.0 10 mA

Pins 6, 14, 15 = Gnd, remaining pins open)

5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. =0°C for MC34163 T

6. T

low

=–40°C for MC33163 = + 85°C for MC33163

=+70°C for MC34163

high

1.275

0.03

1.287

–

270

1.0

1.4

V

%/V

V

mV

V

100

10

, OUTPUT SWITCH ON-OFF TIME ( s)t

off

-t µ

1.0

on

0.1

V

= 15 V

CC

T

= 25°C

A

1)ton, R

2)ton, RDT = 20 k

3)ton, t

4)t

5)t

= ∞

DT

, RDT = 10 k

off

, RDT = 20 k

off

, R

= ∞

off

DT

1

2

3 4 5

1.0 10

C

, OSCILLATOR TIMING CAPACITOR (nF)

T

Figure 2. Output Switch On–Off Time

versus Oscillator Timing Capacitor

2.0

0

-2.0

-4.0

, OSCILLATOR FREQUENCY CHANGE (%)∆

-6.0

-55

OSC

f

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3

VCC = 15 V CT = 620 pF

-25 0 25 50 75 100 125

, AMBIENT TEMPERATURE (°C)

T

A

Figure 3. Oscillator Frequency Change

versus Temperature

MC34163, MC33163

5

)

140

1300 VCC = 15 V V

120

FB1

= 5.05 V

1280

1260

VCC = 15 V

Vth Max = 1275 mV

Vth Typ = 1250 mV

100

1240

80

, INPUT BIAS CURRENT (A)µ

IB

I

60

-55

-25 0 25 50 75 100 125

, AMBIENT TEMPERATURE (°C)

T

A

Figure 4. Feedback Comparator 1 Input Bias

Current versus Temperature

2.8

VCC = 15 V

2.4

2.0

Pin 16 = VCC + 5.0 V

1220

1200

, COMPARATOR 2 THRESHOLD VOLTAGE (mV

-55

th(FB2)

V

-25 0 25 50 75 100 125

, AMBIENT TEMPERATURE (°C)

T

A

Figure 5. Feedback Comparator 2 Threshold

Voltage versus Temperature

7.6

IZ = 25 mA

7.4

7.2

Vth Min = 1225 mV

1.6

, BOOTSTRAP INPUT CURRENT SOURCE (mA)

1.2

-55 -25 0 25 50 75 100 125 T

, AMBIENT TEMPERATURE (°C)

source (DRV)

I

A

Figure 6. Bootstrap Input Current

Source versus T emperature

0

V

CC

-0.4

-0.8

Bootstrapped, Pin 16 = VCC + 5.0 V

-1.2

, SOURCE SATURATION (V)

-1.6

CE (sat)

V

-2.0

Non-Bootstrapped, Pin 16 = V

0 0.8 2.4 3.2

, EMITTER CURRENT (A)

I

E

Darlington Configuration Emitter Sourcing Current to Gnd Pins 7, 8, 10, 11 = V Pins 4, 5, 12, 13 = Gnd T

= 25°C, (Note 2)

A

CC

1.6

Figure 8. Output Switch Source Saturation

versus Emitter Current

7.0

6.8

-55 -25 0 25 50 75 100 12

, BOOTSTRAP INPUT ZENER CLAMP VOLTAGE (V)

Z

V

T

, AMBIENT TEMPERATURE (°C)

A

Figure 7. Bootstrap Input Zener Clamp

Voltage versus Temperature

1.2

Darlington, Pins 9, 10, 11 Connected

1.0

0.8

Grounded Emitter Configuration Collector Sinking Current From V

0.6 Pins 7, 8 = VCC = 15 V

, SINK SATURATION (V)

CE (sat)

V

Pins 4, 5, 12, 13, 14, 15 = Gnd

0.4 T

= 25°C, (Note 2)

A

0.2

0

0 0.8 2.4 3.21.6

CC

Saturated Switch, R

Gnd

I

, COLLECTOR CURRENT (A)

C

= 110 Ω to V

Pin9

Figure 9. Output Switch Sink Saturation

versus Collector Current

CC

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4

MC34163, MC33163

0

Gnd

-0.4

I

= 10 µA

C

-0.8

-1.2

, EMITTER VOLTAGE (V)

E

V

-1.6

IC = 10 mA

VCC = 15 V Pins 7, 8, 9, 10, 16 = V Pins 4, 6 = Gnd Pin 14 Driven Negative

-2.0

-55 -25 0 25 50 75 100 125

, AMBIENT TEMPERATURE (°C)

T

A

Figure 10. Output Switch Negative Emitter

Voltage versus Temperature

254

VCC = 15 V

252

250

, THRESHOLD VOLTAGE (mV)

248

th (Ipk Sense)

V

246

-55 -25 0 25 50 75 100 125

, AMBIENT TEMPERATURE (°C)

T

A

Figure 12. Current Limit Comparator Threshold

Voltage versus Temperature

0.5

VCC=5 V T

=25°C

A

0.4

0.3

0.2

CC

0.1

, OUTPUT SATURATION VOLTAGE (V)

0

OL (LVI)

0 2.0 4.0 6.0 8.0

V

I

, OUTPUT SINK CURRENT (mA)

sink

Figure 11. Low Voltage Indicator Output Sink

Saturation Voltage versus Sink Current

1.6

µ

1.4

VCC = 15 V V

Ipk (Sense)

= 15 V

1.2

1.0

INPUT BIAS CURRENT ( A) ,

0.8

IB (Sense)

I

0.6

-55 -25 0 25 50 75 100 125 T

, AMBIENT TEMPERATURE (°C)

A

Figure 13. Current Limit Comparator Input Bias

Current versus Temperature

8.0

6.0

4.0

, SUPPLY CURRENT (mA)

2.0

CC

I

0

0 10203040

, SUPPLY VOLTAGE (V)

V

CC

Pins 7, 8, 16 = V Pins 4, 6, 14 = Gnd Remaining Pins Open T

= 25°C

A

CC

Figure 14. Standby Supply Current

versus Supply V oltage

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7.2 VCC = 15 V

6.4

Pins 7, 8, 16 = V Pins 4, 6, 14 = Gnd Remaining Pins Open

CC

5.6

, SUPPLY CURRENT (mA)

4.8

CC

I

4.0

-55 -25 0 25 50 75 100 125

, AMBIENT TEMPERATURE (°C)

T

A

Figure 15. Standby Supply Current

versus Temperature

5

ON Semiconductor MC34163, MC33163 Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual