Motorola MC34163DWR2, MC34163P, MC33163P, MC33163DW, MC34163DW Datasheet

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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

Order this document by MC34163/D

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POWER SWITCHING

REGULATORS

SEMICONDUCTOR

TECHNICAL DATA

16

1

P SUFFIX

PLASTIC PACKAGE

CASE 648C

(DIP–16)

16

1

DW SUFFIX

PLASTIC PACKAGE

CASE 751G

(SOP–16L)

Ipk Sense

V

CC

Timing

Capacitor

Gnd

Voltage

Feedback 1

Voltage

Feedback 2

LVI Output

Representative Block Diagram

8

7

6

5

4

3

2

1

OSC

LVI

+
+
–

This device contains 114 active transistors.

I

–

Limit

+

+

Control Logic

and Thermal

Shutdown

VFB

+
+
–

(Bottom View)

+

+

9

10

11

12

13

14

15

16

Driver
Collector

Switch
Collector

Gnd

Switch
Emitter

Bootstrap
Input

PIN CONNECTIONS

LVI Output
Voltage Feedback 2
Voltage Feedback 1

Gnd

Timing Capacitor

V

CC

Ipk Sense

ORDERING INFORMATION

Device

MC34163DW
MC34163P
MC33163DW
MC33163P

Temperature Range

TA = – 40° to +85°C

116
2
3
4
5
6
7
8

(Top View)

Operating

TA = 0° to +70°C

Bootstrap Input

15

Switch
Emitter

14
13

Gnd

12
11

Switch Collector

10

Driver Collector

9

SOP–16L

SOP–16L

Package

DIP–16

DIP–16

MOTOROLA ANALOG IC DEVICE DATA

 Motorola, Inc. 1996 Rev 2

1

MAXIMUM RATINGS

Rating Symbol Value Unit

Power Supply Voltage V
Switch Collector Voltage Range V
Switch Emitter Voltage Range V
Switch Collector to Emitter Voltage V
Switch Current (Note 1) I
Driver Collector Voltage V
Driver Collector Current I
Bootstrap Input Current Range (Note 1) I
Current Sense Input Voltage Range V
Feedback and Timing Capacitor Input

Voltage Range

Low Voltage Indicator Output Voltage

Range

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 3)

MC34163
MC33163

Storage Temperature Range T

CE(switch)

Ipk (Sense)(VCC

MC34163 MC33163

CC
C(switch)
E(switch)

SW

C(driver)

C(driver)

BS

V

in

V

C(LVI)

C(LVI)

R

θJA

R

θJC

R

θJA

R

θJC

J

T

A

stg

–1.0 to + 40 V

– 2.0 to V

–1.0 to +40 V

–100 to +100 mA

–7.0) to (VCC+1.0) V

–1.0 to + 7.0 V

–1.0 to + 40 V

0 to +70

– 40 to + 85

– 65 to +150 °C

40 V

C(switch)

40 V

3.4 A

150 mA

10 mA

°C/W

80
15

94
18

+150 °C

°C

V

ELECTRICAL CHARACTERISTICS (V

the operating ambient temperature range that applies (Note 3), unless otherwise noted.)

Characteristic

OSCILLAT OR

Frequency

TA = 25°C

Total Variation over VCC = 2.5 V to 40 V, and Temperature
Charge Current I
Discharge Current I
Charge to Discharge Current Ratio I
Sawtooth Peak Voltage V
Sawtooth Valley Voltage V

FEEDBACK COMPARATOR 1

Threshold Voltage

TA = 25°C

Line Regulation (VCC = 2.5 V to 40 V, TA = 25°C)

Total Variation over Line, and Temperature
Input Bias Current (V

NOTES: 1. Maximum package power dissipation limits must be observed.

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

3.T

=0

low

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

= 5.05 V) I

FB1

°C for MC34163 T

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

CC

Symbol Min Typ Max Unit

f

OSC

chg

dischg

chg/Idischg

OSC(P)
OSC(V)

V

th(FB1)

IB(FB1)

=+70°C for MC34163

high

46
45

– 225 – µA
– 25 – µA

8.0 9.0 10 –
– 1.25 – V
– 0.55 – V

4.9
–

4.85
– 100 200 µA

50

–

5.05

0.008
–

54
55

5.2

0.03

5.25

kHz

V

%/V

V

2

MOTOROLA ANALOG IC DEVICE DATA

MC34163 MC33163

ELECTRICAL CHARACTERISTICS (continued) (V

values TA is the operating ambient temperature range that applies (Note 3), unless otherwise noted.)

Characteristic Symbol Min Typ Max Unit

FEEDBACK COMPARATOR 2

Threshold Voltage

TA = 25°C
Line Regulation (VCC = 2.5 V to 40 V, TA = 25°C)
Total Variation over Line, and Temperature

Input Bias Current (V

CURRENT LIMIT COMPARATOR

Threshold Voltage

TA = 25°C
Total Variation over VCC = 2.5 V to 40 V, and Temperature

Input Bias Current (V

DRIVER AND OUTPUT SWITCH (Note 2)

Sink Saturation Voltage (ISW = 2.5 A, Pins 14, 15 grounded)

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

LOW VOLTAGE INDICATOR

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

TOTAL DEVICE

Standby Supply Current (VCC = 2.5 V to 40 V, Pin 8 = VCC,

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

NOTES: 1. Maximum package power dissipation limits must be observed.

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

3.T

=0°C for MC34163 T

low

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

= 1.25 V) I

FB2

Ipk (Sense)

Increasing) V

FB2

Decreasing) V

FB2

= 15 V) I

= 110 Ω to VCC, ISW/I

Pin 9

= 2.0 mA) V

sink

=+70°C for MC34163

high

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

CC

V

DRV

≈ 20)

th(FB2)

IB(FB2)

V

th(Ipk Sense)

IB(sense)

V

CE(sat)

C(off)

source(DRV)

Z

th

H

OL(LVI)

OH

I

CC

1.225

1.213
– 0.4 0 0.4 µA

230

0.5 2.0 4.0 mA

VCC + 6.0 VCC + 7.0 VCC + 9.0 V

1.07 1.125 1.18 V

–

–

– 1.0 20 µA

–
–

– 0.02 100 µA

– 15 – mV
– 0.15 0.4 V
– 0.01 5.0 µA

– 6.0 10 mA

1.25

0.008
–

250

–

0.6

1.0

1.275

0.03

1.287

–

270

1.0

1.4

V

%/V

V

mV

V

Figure 1. Output Switch On–Off Time

µ

100

10

, OUTPUT SWITCH ON–OFF TIME ( s)t

off

–t

on

1.0

0.1

versus Oscillator Timing Capacitor

VCC = 15 V

°

C

TA = 25

1) ton, RDT =

2) ton, RDT = 20 k

3) ton, t

4) t

off

5) t

off

∞

, RDT = 10 k

off

, RDT = 20 k

∞

, RDT =

CT, OSCILLAT OR TIMING CAPACITOR (nF)

1

2
3

4
5

1.0 10

MOTOROLA ANALOG IC DEVICE DATA

2.0

0

– 2.0

– 4.0

, OSCILLAT OR FREQUENCY CHANGE (%)

OSC

– 6.0

f

–55

∆

Figure 2. Oscillator Frequency Change

versus T emperature

VCC = 15 V

CT = 620 pF

– 25 0 25 50 75 100 125

TA, AMBIENT TEMPERATURE (

°

C)

3

MC34163 MC33163

Figure 3. Feedback Comparator 1 Input Bias

Current versus Temperature

140

µ

120

100

80

, INPUT BIAS CURRENT ( A)

IB

I

60

–55

– 25 0 25 50 75 100 125

TA, AMBIENT TEMPERATURE (

VCC = 15 V
V

= 5.05 V

FB1

°

C)

Figure 5. Bootstrap Input Current

Source versus T emperature

2.8
VCC = 15 V

2.4

Pin 16 = VCC + 5.0 V

Figure 4. Feedback Comparator 2 Threshold

V oltage versus Temperature

1300

1280

1260

1240

1220

, COMPARATOR 2 THRESHOLD VOLTAGE (mV)

1200

th(FB2)

VCC = 15 V

–55

– 25 0 25 50 75 100 125

TA, AMBIENT TEMPERATURE (

Vth Max = 1275 mV

Vth Typ = 1250 mV

Vth Min = 1225 mV

Figure 6. Bootstrap Input Zener Clamp

V oltage versus Temperature

7.6
IZ = 25 mA

7.4

°

C)

2.0

1.6

, BOOTSTRAP INPUT CURRENT SOURCE (mA)

1.2
– 55 – 25 0 25 50 75 100 125

source (DRV)

I

TA, AMBIENT TEMPERATURE (

°

C)

Figure 7. Output Switch Source Saturation

versus Emitter Current

0

V

CC

– 0.4

– 0.8

Bootstrapped, Pin 16 = VCC + 5.0 V

–1.2

, SOURCE SATURATION (V)

–1.6

CE (sat)

V

Non–Bootstrapped, Pin 16 = V

– 2.0

0 0.8 2.4 3.2

IE, EMITTER CURRENT (A)

Darlington Configuration

Emitter Sourcing Current to Gnd

Pins 7, 8, 10, 11 = V
Pins 4, 5, 12, 13 = Gnd

°

C, (Note 2)

TA = 25

CC

1.6

CC

7.2

7.0

6.8

, BOOTSTRAP INPUT ZENER CLAMP VOLTAGE (V)

– 55 – 25 0 25 50 75 100 125

Z

V

TA, AMBIENT TEMPERATURE (

°

C)

Figure 8. Output Switch Sink Saturation

versus Collector Current

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) V

CE (sat)

V

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

0.4

0.2

0

0 0.8 2.4 3.21.6

TA = 25

°

C, (Note 2)

IC, COLLECTOR CURRENT (A)

CC

Saturated Switch, R

Gnd

Pin9

= 110 Ω to V

CC

4

MOTOROLA ANALOG IC DEVICE DATA

MC34163 MC33163

Figure 9. Output Switch Negative Emitter

V oltage versus Temperature

0

Gnd

– 0.4

– 0.8

– 1.2

, EMITTER VOLTAGE (V)

E

V

– 1.6

– 2.0

– 55 – 25 0 25 50 75 100 125

IC = 10 µA

IC = 10 mA

VCC = 15 V

Pins 7, 8, 9, 10, 16 = V

Pins 4, 6 = Gnd
Pin 14 Driven Negative

TA, AMBIENT TEMPERATURE (°C)

Figure 11. Current Limit Comparator Threshold

V oltage versus Temperature

254

VCC = 15 V

252

CC

Figure 10. Low V oltage Indicator Output Sink

Saturation V oltage versus Sink Current

0.5
VCC=5 V

°

C

TA=25

0.4

0.3

0.2

, OUTPUT SA TURATION VOLTAGE (V)

0.1

OL (LVI)

0

V

0 2.0 4.0 6.0 8.0

I

, OUTPUT SINK CURRENT (mA)

sink

Figure 12. Current Limit Comparator Input Bias

Current versus Temperature

1.6

µ

1.4

VCC = 15 V
V

Ipk (Sense)

= 15 V

250

, THRESHOLD VOLTAGE (mV)

248

th (Ipk Sense)

V

246

– 55 – 25 0 25 50 75 100 125

°

TA, AMBIENT TEMPERATURE (

C)

Figure 13. Standby Supply Current

versus Supply V oltage

8.0

6.0

4.0

, SUPPLY CURRENT (mA)

2.0

CC

I

0

0 10203040

V

, SUPPLY VOLTAGE (V)

CC

Pins 7, 8, 16 = V

Pins 4, 6, 14 = Gnd

Remaining Pins Open

TA = 25

CC

°

C

1.2

1.0

INPUT BIAS CURRENT ( A)

,

0.8

IB (Sense)

I

0.6

– 55 – 25 0 25 50 75 100 125

TA, AMBIENT TEMPERATURE (

°

C)

Figure 14. Standby Supply Current

versus T emperature

7.2

VCC = 15 V

Pins 7, 8, 16 = V

6.4

5.6

, SUPPLY CURRENT (mA)

4.8

CC

I

4.0

– 55 – 25 0 25 50 75 100 125

TA, AMBIENT TEMPERATURE (

Pins 4, 6, 14 = Gnd
Remaining Pins Open

°

CC

C)

MOTOROLA ANALOG IC DEVICE DATA

5