Motorola MC34163DWR2, MC34163P, MC33163P, MC33163DW, MC34163DW Datasheet

Order this document by MC34163/D

Power 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

Representative Block Diagram

I	pk	Sense	8	±	ILimit		9	Driver
								Collector
				+
		VCC	7	+			10	Switch
		Timing						Collector
			6	OSC			11
Capacitor
			5	Control Logic			12
								Gnd
	Gnd			and Thermal
			4	Shutdown			13
						+
	Voltage		3				14
Feedback 1
								Switch
	Voltage				VFB			Emitter
			2		+		15
Feedback 2					+
					±
				LVI				Bootstrap
LVI Output			1	+			16
				+				Input
				±
							+

(Bottom View)

This device contains 114 active transistors.

MC34163

MC33163

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)

PIN CONNECTIONS

							Bootstrap Input
LVI Output	1					16
Voltage Feedback 2
	2					15	Switch
Voltage Feedback 1							Emitter
	3					14
Gnd	4					13	Gnd
	5					12
Timing Capacitor
	6					11
VCC							Switch Collector
	7					10
Ipk Sense							Driver Collector
	8					9

(Top View)

ORDERING INFORMATION

		Operating
	Device	Temperature Range	Package
	MC34163DW	TA = 0° to +70°C	SOP±16L
	MC34163P		DIP±16
	MC33163DW	TA = ± 40° to +85°C	SOP±16L
	MC33163P		DIP±16

Motorola, Inc. 1996

Rev 2

MC34163 MC33163

MAXIMUM RATINGS

Rating	Symbol	Value	Unit
Power Supply Voltage	VCC	40	V
Switch Collector Voltage Range	VC(switch)	±1.0 to + 40	V
Switch Emitter Voltage Range	VE(switch)	± 2.0 to VC(switch)	V
Switch Collector to Emitter Voltage	VCE(switch)	40	V
Switch Current (Note 1)	ISW	3.4	A
Driver Collector Voltage	VC(driver)	±1.0 to +40	V
Driver Collector Current	IC(driver)	150	mA
Bootstrap Input Current Range (Note 1)	IBS	±100 to +100	mA
Current Sense Input Voltage Range	VIpk (Sense)	(VCC±7.0) to (VCC+1.0)	V
Feedback and Timing Capacitor Input	Vin	±1.0 to + 7.0	V
Voltage Range
Low Voltage Indicator Output Voltage	VC(LVI)	±1.0 to + 40	V
Range
Low Voltage Indicator Output Sink Current	IC(LVI)	10	mA
Thermal Characteristics			°C/W
P Suffix, Dual±In±Line Case 648C
Thermal Resistance, Junction±to±Air	RθJA	80
Thermal Resistance, Junction±to±Case	RθJC	15
(Pins 4, 5, 12, 13)
DW Suffix, Surface Mount Case 751G
Thermal Resistance, Junction±to±Air	RθJA	94
Thermal Resistance, Junction±to±Case	RθJC	18
(Pins 4, 5, 12, 13)
Operating Junction Temperature	TJ	+150	°C
Operating Ambient Temperature (Note 3)	TA		°C
MC34163		0 to +70
MC33163		± 40 to + 85
Storage Temperature Range	Tstg	± 65 to +150	°C

ELECTRICAL CHARACTERISTICS (VCC = 15 V, Pin 16 = VCC, CT = 620 pF, for typical values TA = 25°C, for min/max values TA is the operating ambient temperature range that applies (Note 3), unless otherwise noted.)

Characteristic			Symbol	Min	Typ	Max	Unit
OSCILLATOR
Frequency			fOSC				kHz
TA = 25°C				46	50	54
Total Variation over VCC = 2.5 V to 40 V, and Temperature				45	±	55
Charge Current			Ichg	±	225	±	μA
Discharge Current			Idischg	±	25	±	μA
Charge to Discharge Current Ratio			Ichg/Idischg	8.0	9.0	10	±
Sawtooth Peak Voltage			VOSC(P)	±	1.25	±	V
Sawtooth Valley Voltage			VOSC(V)	±	0.55	±	V
FEEDBACK COMPARATOR 1
Threshold Voltage			Vth(FB1)
TA = 25°C				4.9	5.05	5.2	V
Line Regulation (VCC = 2.5 V to 40 V, TA = 25°C)				±	0.008	0.03	%/V
Total Variation over Line, and Temperature				4.85	±	5.25	V
Input Bias Current (VFB1 = 5.05 V)			IIB(FB1)	±	100	200	μA
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. Tlow = 0°C for MC34163	Thigh	= + 70°C for MC34163
= ± 40°C for MC33163		= + 85°C for MC33163

2	MOTOROLA ANALOG IC DEVICE DATA

MC34163 MC33163

ELECTRICAL CHARACTERISTICS (continued) (VCC = 15 V, Pin 16 = VCC, CT = 620 pF, for typical values TA = 25°C, for min/max 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			Vth(FB2)
TA = 25°C				1.225	1.25	1.275	V
Line Regulation (VCC = 2.5 V to 40 V, TA = 25°C)				±	0.008	0.03	%/V
Total Variation over Line, and Temperature				1.213	±	1.287	V
Input Bias Current (VFB2 = 1.25 V)			IIB(FB2)	± 0.4	0	0.4	μA
CURRENT LIMIT COMPARATOR
Threshold Voltage			Vth(Ipk Sense)				mV
TA = 25°C				±	250	±
Total Variation over VCC = 2.5 V to 40 V, and Temperature				230	±	270
Input Bias Current (VIpk (Sense) = 15 V)			IIB(sense)	±	1.0	20	μA
DRIVER AND OUTPUT SWITCH (Note 2)
Sink Saturation Voltage (ISW = 2.5 A, Pins 14, 15 grounded)			VCE(sat)				V
Non±Darlington Connection (RPin 9 = 110 Ω to VCC, ISW/IDRV ≈ 20)				±	0.6	1.0
Darlington Connection (Pins 9, 10, 11 connected)				±	1.0	1.4
Collector Off±State Leakage Current (VCE = 40 V)			IC(off)	±	0.02	100	μA
Bootstrap Input Current Source (VBS = VCC + 5.0 V)			Isource(DRV)	0.5	2.0	4.0	mA
Bootstrap Input Zener Clamp Voltage (IZ = 25 mA)			VZ	VCC + 6.0	VCC + 7.0	VCC + 9.0	V
LOW VOLTAGE INDICATOR
Input Threshold (VFB2 Increasing)			Vth	1.07	1.125	1.18	V
Input Hysteresis (VFB2 Decreasing)			VH	±	15	±	mV
Output Sink Saturation Voltage (Isink = 2.0 mA)			VOL(LVI)	±	0.15	0.4	V
Output Off±State Leakage Current (VOH = 15 V)			IOH	±	0.01	5.0	μA
TOTAL DEVICE
Standby Supply Current (VCC = 2.5 V to 40 V, Pin 8 = VCC,			ICC	±	6.0	10	mA
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. Tlow = 0°C for MC34163	Thigh	= + 70°C for MC34163
= ± 40°C for MC33163		= + 85°C for MC33163

				Figure 1. Output Switch On±Off Time
s)	100			versus Oscillator Timing Capacitor
(μ		V		= 15 V
TIME
		CC
		TA = 25°C
ON±OFF		1)	ton, RDT = ∞
		2)	ton, RDT = 20 k		1
		3)	ton, toff, RDT = 10 k
SWITCH		4)	toff, RDT = 20 k
	10	5)	toff, RDT = ∞		2
, OUTPUT					3
					4
					5
off
±t
on	1.0
t					1.0	10
	0.1

CT, OSCILLATOR TIMING CAPACITOR (nF)

		Figure 2. Oscillator Frequency Change
(%)			versus Temperature
	2.0
CHANGE
							VCC = 15 V
							CT = 620 pF
	0
FREQUENCY
	± 2.0
, OSCILLATOR	± 4.0
OSC	± 6.0
f		± 25	0	25	50	75	100	125
	± 55
			TA, AMBIENT TEMPERATURE (°C)

MOTOROLA ANALOG IC DEVICE DATA	3

MC34163 MC33163

IIB, INPUT BIAS CURRENT (μA)

Figure 3. Feedback Comparator 1 Input Bias Current versus Temperature

140

VCC = 15 V

VFB1 = 5.05 V

120

100

80

60	± 25	0	25	50	75	100	125
± 55

TA, AMBIENT TEMPERATURE (°C)

(mV)	Figure 4. Feedback Comparator 2 Threshold
	Voltage versus Temperature

VOLTAGE	1300
	1280	VCC = 15 V			Vth Max = 1275 mV
2 THRESHOLD
	1260				Vth Typ = 1250 mV
, COMPARATOR	1240
					Vth Min = 1225 mV
	1220
th(FB2)	1200	± 25	0	25	50	75	100	125
	± 55
V			TA, AMBIENT TEMPERATURE (°C)

I source (DRV), BOOTSTRAP INPUT CURRENT SOURCE (mA)

Figure 5. Bootstrap Input Current

Source versus Temperature

2.8

VCC = 15 V

Pin 16 = VCC + 5.0 V

2.4

2.0

1.6

1.2	± 25	0	25	50	75	100	125
± 55

TA, AMBIENT TEMPERATURE (°C)

VZ, BOOTSTRAP INPUT ZENER CLAMP VOLTAGE (V)

Figure 6. Bootstrap Input Zener Clamp

Voltage versus Temperature

7.6

IZ = 25 mA

7.4

7.2

7.0

6.8	± 25	0	25	50	75	100	125
± 55

TA, AMBIENT TEMPERATURE (°C)

VCE (sat), SOURCE SATURATION (V)

0

±0.4

±0.8

±1.2

±1.6

±2.0

0

Figure 7. Output Switch Source Saturation

versus Emitter Current

	VCC	Darlington Configuration
		Emitter Sourcing Current to Gnd
		Pins 7, 8, 10, 11 = VCC
		Pins 4, 5, 12, 13 = Gnd
		TA = 25°C, (Note 2)

Bootstrapped, Pin 16 = VCC + 5.0 V

Non±Bootstrapped, Pin 16 = VCC

0.8

1.6

2.4

3.2

IE, EMITTER CURRENT (A)

VCE (sat), SINK SATURATION (V)

Figure 8. Output Switch Sink Saturation

versus Collector Current

1.2

1.0Darlington, Pins 9, 10, 11 Connected

0.8

Grounded Emitter Configuration

0.6Collector Sinking Current From VCC

		Pins 7, 8 = VCC = 15 V
	0.4	Pins 4, 5, 12, 13, 14, 15 = Gnd
		TA = 25°C, (Note 2)
	0.2	Saturated Switch, RPin9 = 110 Ω to VCC
	0	Gnd

0	0.8	1.6	2.4	3.2
		IC, COLLECTOR CURRENT (A)

4	MOTOROLA ANALOG IC DEVICE DATA

MC34163 MC33163

Figure 9. Output Switch Negative Emitter

Voltage versus Temperature

0

(V)

Gnd

IC = 10

μA

± 0.4

VOLTAGE

± 0.8

EMITTER,

± 1.2

IC = 10 mA

E

± 1.6

V

CC = 15 V

V

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

Pins 4, 6 = Gnd

± 2.0

Pin 14 Driven Negative

± 25

0

25

50

75

100

125

± 55

TA, AMBIENT TEMPERATURE (°C)

Figure 11. Current Limit Comparator Threshold

Voltage versus Temperature

(mV)	254		VCC = 15 V
VOLTAGE	252
THRESHOLD,
	250
Sense)(Ipkth
	248
V	246
	± 55		± 25		0		25		50		75		100		125
					TA, AMBIENT TEMPERATURE (°C)

Figure 10. Low Voltage Indicator Output Sink

(V)			Saturation Voltage versus Sink Current
	0.5
VOLTAGE
			VCC =	5 V
	0.4		TA =	25°C
SATURATION
	0.3
, OUTPUT	0.2
	0.1
OL(LVI)	0
V
	0		2.0			4.0		6.0			8.0

Isink, OUTPUT SINK CURRENT (mA)

Figure 12. Current Limit Comparator Input Bias

Current versus Temperature

(μA)	1.6
					VCC = 15 V
CURRENT	1.4				VIpk (Sense) = 15 V
	1.2
BIAS
, INPUT	1.0
IB (Sense)	0.8
I	0.6
	± 55	± 25	0	25	50	75	100	125
			TA, AMBIENT TEMPERATURE (°C)

ICC, SUPPLY CURRENT (mA)

Figure 13. Standby Supply Current

versus Supply Voltage

8.0

6.0
4.0
2.0				Pins 7, 8, 16 = VCC
				Pins 4, 6, 14 = Gnd
				Remaining Pins Open
0				TA = 25°C
		10	20	30	40
0

VCC, SUPPLY VOLTAGE (V)

ICC, SUPPLY CURRENT (mA)

Figure 14. Standby Supply Current

versus Temperature

7.2					VCC =	15 V
					Pins 7,	8, 16 = V	CC
6.4					Pins 4,	6, 14 =	Gnd
					Remaining Pins		Open
5.6
4.8
4.0

± 55	± 25	0	25	50	75	100	125
		TA, AMBIENT TEMPERATURE (°C)

MOTOROLA ANALOG IC DEVICE DATA	5