TOKO TK73280MILH, TK73280MCLH, TK73280MIL, TK73280MCL, TK73270MILH Datasheet

TK732xx

	LOW DROPOUT REGULATOR
FEATURES	APPLICATIONS
■ Up to 5 A Output Current Capability With External	■ Battery Powered Systems
PNP Transistor	■ Cellular/Cordless Telephones
■ Internal Short Circuit Protection	■ Radio Control Systems
■ Excellent Load Regulation	■ Wireless Communications Systems
■ CMOS/TTL-Compatible On/Off Switch	■ Portable Instrumentations
■ Internal Reverse Bias Current Protection Switch	■ Portable Computers
■ Internal Thermal Shutdown	■ Personal Digital Assistants
■ Broad Operating Voltage Range	■ Local Area Network (LAN) Receivers
■ High Impedance VSENSE Pin (Off Mode)	■ Lithium Ion Battery Chargers
■ Continuous and Pulsed Current Modes	■ Power Recovery for Microprocessors
DESCRIPTION

The TK732xx is a controller IC for a low dropout voltage regulator. The TK732xx and the external PNP power transistor provide standard output voltages from 2 to 11 V and output current from 100 mA to 5 A. By utilizing an external PNP power transistor, low dropout voltage at high current can be readily achieved. The internal electronic switch can be controlled by TTL or CMOS logic levels. The device is in the “on” state when the control pin is pulled to a high logic level. A pin for a bypass capacitor, which connects to the internal circuitry, is provided to lower the overall output noise level.

The current limit characteristics can be configured as continuous (constant current) or pulsed (cycling). An internal thermal shutdown circuit limits the junction temperatures to below 150 °C. In the “off” mode, the output of the regulator becomes a high impedance. This prevents the output capacitor from being rapidly discharged for backup to the load.

ORDERING INFORMATION

TK732

M L

Voltage Code

Grade

Tape/Reel Code

Package Code

Temp. Code

VOLTAGE CODE

20	= 2.0 V *		32 = 3.2 V	44	= 4.4 V
21	= 2.1 V *		33 = 3.3 V	45	= 4.5 V
22	= 2.2	V *	34 = 3.4 V	46	= 4.6 V
23	= 2.3	V *	35 = 3.5 V	47	= 4.7 V
24	= 2.4 V		36 = 3.6 V	48	= 4.8 V
25	= 2.5 V		37 = 3.7 V	49	= 4.9 V
26	= 2.6 V		38 = 3.8 V	50	= 5.0	V
27	= 2.7	V	39 = 3.9 V	55	= 5.5	V *
28	= 2.8	V	40 = 4.0 V	70	= 7.0	V *
29	= 2.9 V		41 = 4.1 V	80	= 8.0	V
30	= 3.0 V		42 = 4.2 V	11	= 11.0 V
31	= 3.1 V		43 = 4.3 V

TAPE/REEL CODE PACKAGE CODE

L: Tape Left M: SOT-23L-8

TEMP. RANGE		GRADE
C: -30 to 80	C **	None: Standard 2%
I : -40 to 85	C	H: High (Special) ***

*Unavailable with I Rank

**unless Otherwise Specified

***TK73241MCLH, TK73242MCLH Available Only

TK732xx

	CONTROL	BASE
	NOISE	VSENSE
	BYPASS
	01S
	CPULSE	GND
	VIN	IPK

BLOCK DIAGRAM
VIN	IPK	CPULSE	BASE	VSENSE
ON/OFF		THERMAL
CIRCUIT		SENSOR
CONTROL
	BANDGAP
	REFERENCE
			LEAKAGE
			PROTECTION
	GND	NOISE BYPASS

January 1999 TOKO, Inc.

Page 1

TK732xx

ABSOLUTE MAXIMUM RATINGS (STANDARD DEVICES) (NOTE 6)

Supply Voltage Range ............................................		19	V
Power Dissipation (Note 1) ................................		600 mW
Reverse Bias Voltage Range .....................................		6	V
Noise Bypass Pin Terminal Voltage Range		............... 5	V
Control Pin Terminal Voltage Range ........................		14	V
Storage Temperature Range ...................	-55 to +150 °C

Operating Temperature Range ...................	-30 to +80	°C
Extended Temperature Range ...................	-40 to +85	°C
Operating Voltage Range............................	1.8 to 14.0 V
Junction Temperature ...........................................	150	°C
Lead Soldering Temperature (10 s) ......................	235	°C

TK732xx ELECTRICAL CHARACTERISTICS (STANDARD DEVICES)

Test conditions: VIN = VOUT(TYP) + 1 V, TA = 25 °C, unless otherwise specified.

	SYMBOL	PARAMETER	TEST CONDITIONS	MIN	TYP	MAX	UNITS
	IQ	Quiescent Current	IOUT = 0 mA, Excluding ICONT		250	360	µA
	ISTBY	Standby Current	VIN = 8 V, Output OFF			0.1	µA
	IR(LEAK)	Reverse Bias Leakage (Note 5)	VR = 5 V, Excluding External		2	50	nA
			Transistor, Output OFF
	IOUT	Output Current	External Transistor Dependent		N/A		A
	VOUT	Output Voltage	IOUT = 30 mA, See Table 1				V
	VDROP	Dropout Voltage	External Transistor Dependent		N/A		V
	Line Reg	Line Regulation	VIN = VOUT(TYP) + 1 V to		3.0	20	mV
			VOUT(TYP) + 6 V (Note 2)
	Load reg	Load Regulation	External Transistor Dependent		10		mV
	IBASE(L)	Base Current LOW	1.8 V ≤ VIN ≤ 4 V	15			mA
	IBASE(H)	Base Current HIGH	4.1 V ≤ VIN ≤ 12 V	40			mA
	VSENSE	Current Limit Detect Voltage	Continuous Current Limit Mode	80	100	120	mV
			Pulse Current Limit Mode	70	90	110	mV
			f = 400 Hz, CL = 10 µF,
	RR	Ripple Rejection	CN = 0.1 µF, VIN = VOUT(TYP) = 1.5 V,		57		dB
			IOUT = 30 mA, VRIPPLE = 100 mVrms,
			(Note 3)
	VNO	Output Noise	f = 1 kHz, BPF = 400 Hz to 30 kHz,		0.13		µV/ Hz
			(Note 3)
	IPULSE	CPULSE Pin Terminal Current	(Note 4)	15	25	45	µA
	VOUT / T	Temperature Coefficient			20		ppm/° C
	Vref	Reference Voltage			1.25		V
	CONTROL TERMINAL SPECIFICATIONS
	ICONT	Control Current	VCONT = 1.8 V, Output ON		6.5	20	µA
	VCONT(ON)	Control Voltage (ON)	Output ON	1.8			V
	VCONT(OFF)	Control Voltage (OFF)	Output OFF			0.6	V

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January 1999 TOKO, Inc.

TK732xx

TK732xx ELECTRICAL CHARACTERISTICS (STANDARD DEVICES) CONT.

Note 1: Power dissipation is 600 mW when mounted as recommended. Derate at 4.8 mW/°C for operation above 25 °C. Note 2: Refer to :Definition of Terms.”

Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used.

Note 4: This pin is used for Pulse Current Limit Mode. When selecting Continuous Current Limit Mode, this pin is connected to GND.

Note 5: Not applicable for VOUT > 4.8 V.

Note 6: The voltage applied to any pin must be greater than -0.4 V.

Gen. Note: Parameters with min. or max. values are 100% tested at TA = 25 °C.

TK732xx ELECTRICAL CHARACTERISTICS TABLE 1 (STANDARD DEVICES)

Test Conditions: VIN = VOUT(TYP) + 1 V, IOUT = 30 mA, TA = 25 °C, unless otherwise specified.

		Room Temp. Range (TA = 25 °C)		Full Temp. Range (TA = -40 to +85 °C)
				(Applies to "I" Rank Only)
Output Voltage	Voltage Code	VOUT(MIN)	VOUT(MAX)	VOUT(MIN)	VOUT(MAX)
2.0 V	20	1.940 V	2.060 V
2.1 V	21	2.040 V	2.160 V
2.2 V	22	2.140 V	2.260 V
2.3 V	23	2.240 V	2.360 V
2.4 V	24	2.340 V	2.460 V	2.300 V	2.500 V
2.5 V	25	2.440 V	2.560 V	2.400 V	2.600 V
2.6 V	26	2.540 V	2.660 V	2.500 V	2.700 V
2.7 V	27	2.640 V	2.760 V	2.600 V	2.800 V
2.8 V	28	2.740 V	2.860 V	2.700 V	2.900 V
2.9 V	29	2.840 V	2.960 V	2.800 V	3.000 V
3.0 V	30	2.940 V	3.060 V	2.900 V	3.100 V
3.1 V	31	3.040 V	3.160 V	3.000 V	3.200 V
3.2 V	32	3.140 V	3.260 V	3.095 V	3.305 V
3.3 V	33	3.240 V	3.360 V	3.190 V	3.410 V
3.4 V	34	3.335 V	3.465 V	3.290 V	3.510 V
3.5 V	35	3.435 V	3.565 V	3.385 V	3.615 V
3.6 V	36	3.535 V	3.665 V	3.485 V	3.720 V
3.7 V	37	3.630 V	3.770 V	3.580 V	3.820 V
3.8 V	38	3.725 V	3.875 V	3.675 V	3.925 V
3.9 V	39	3.825 V	3.975 V	3.770 V	4.030 V
4.0 V	40	3.920 V	4.080 V	3.870 V	4.130 V
4.1 V	41	4.020 V	4.180 V	3.965 V	4.235 V
4.2 V	42	4.120 V	4.280 V	4.060 V	4.335 V
4.3 V	43	4.215 V	4.385 V	4.160 V	4.440 V
4.4 V	44	4.315 V	4.485 V	4.255 V	4.545 V
4.5 V	45	4.410 V	4.590 V	4.350 V	4.645 V
4.6 V	46	4.510 V	4.690 V	4.450 V	4.750 V
4.7 V	47	4.605 V	4.795 V	4.545 V	4.850 V
4.8 V	48	4.705 V	4.895 V	4.640 V	4.955 V
4.9 V	49	4.800 V	5.000 V	4.740 V	5.060 V
5.0 V	50	4.900 V	5.100 V	4.835 V	5.165 V
5.5 V	55	5.390 V	5.610 V
7.0 V	70	6.860 V	7.140 V
6.0 V	80	7.840 V	8.160 V	7.745 V	8.265 V
11.0 V	11	10.78 V	11.22 V	10.650 V	11.365 V

January 1999 TOKO, Inc.

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TK732xx

ABSOLUTE MAXIMUM RATINGS (SPECIAL DEVICES) (Note 6)

Supply Voltage Range ............................................	19	V	Storage Temperature Range ...................	-55 to +150	°C
Power Dissipation (Note 1) ................................	600 mW		Operating Temperature Range ...................	-10 to +60	°C
Reverse Bias Voltage Range .....................................	6	V	Operating Voltage Range............................	1.8 to 14.5 V
Noise Bypass Pin Terminal Voltage Range ...............	5	V	Junction Temperature ...........................................	150	°C
Control Pin Terminal Voltage Range ........................	14	V	Lead Soldering Temperature (10 s) ......................	235	°C

TK73241MCLH, TK73242MCLH ELECTRICAL CHARACTERISTICS

Test conditions: VIN = VOUT(TYP) + 1 V, TA = 25 °C, unless otherwise specified.

	SYMBOL	PARAMETER	TEST CONDITIONS	MIN	TYP	MAX	UNITS
	IQ	Quiescent Current	IOUT = 0 mA, Excluding ICONT		240	300	µA
	ISTBY	Standby Current	VIN = 8 V, Output OFF			0.1	µA
	IR(LEAK)	Reverse Bias Leakage (Note 5)	VR = 5 V, Excluding External		2	50	nA
			Transistor, Output OFF
	IOUT	Output Current	External Transistor Dependent		N/A		A
	VOUT	Output Voltage	IOUT = 30 mA, See Table 2				V
	VDROP	Dropout Voltage	External Transistor Dependent		N/A		V
	Line Reg	Line Regulation	VIN = VOUT(TYP) + 1 V to		3.0	20	mV
			VOUT(TYP) + 6 V (Note 2)
	Load reg	Load Regulation	External Transistor Dependent		10		mV
	IBASE	Base Current		50			mA
	VSENSE	Current Limit Detect Voltage	Continuous Current Limit Mode	85	100	115	mV
			Pulse Current Limit Mode	75	90	105	mV
			f = 400 Hz, CL = 10 µF,
	RR	Ripple Rejection	CN = 0.1 µF, VIN = VOUT(TYP) = 1.5 V,		57		dB
			IOUT = 30 mA, VRIPPLE = 100 mVrms,
			(Note 3)
	VNO	Output Noise	f = 1 kHz, BPF = 400 Hz to 30 kHz,		0.13		µV/ Hz
			(Note 3)
	IPULSE	CPULSE Pin Terminal Current	(Note 4)	15	25	45	µA
	VOUT / T	Temperature Coefficient			20		ppm/° C
	Vref	Reference Voltage			1.25		V
	CONTROL TERMINAL SPECIFICATIONS
	ICONT	Control Current	VCONT = 1.8 V, Output ON		6.5	20	A
	VCONT(ON)	Control Voltage (ON)	Output ON	1.8			V
	VCONT(OFF)	Control Voltage (OFF)	Output OFF			0.6	V

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January 1999 TOKO, Inc.

TK732xx

TK73241MCLH, TK73242MCLH ELECTRICAL CHARACTERISTICS CONT.

Note 1: Power dissipation is 600 mW when mounted as recommended. Derate at 4.8 mW/°C for operation above 25 °C. Note 2: Refer to “Definition of Terms.”

Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used.

Note 4: This pin is used for Pulse Current Limit Mode. When selecting Continuous Current Limit Mode, this pin is connected to GND.

Note 5: Not applicable for VOUT > 4.8 V.

Note 6: The voltage applied to any pin must be greater than -0.4 V.

Gen. Note: Parameters with min. or max. values are 100% tested at TA = 25 °C.

TK73241MCLH, TK73242MCLH ELECTRICAL CHARACTERISTICS TABLE 2

Test Conditions: VIN = VOUT(TYP) + 1 V, IOUT = 30 mA, TA = 25 °C, unless otherwise specified.

		Room Temp. Range (TA = 25 °C)		Full Temp. Range (TA = -10 to +60 °C)
Output Voltage	Voltage Code	VOUT(MIN)	VOUT(MAX)	VOUT(MIN)	VOUT(MAX)
4.1 V	41	4.067 V	4.133 V	4.050 V	4.150 V
4.2 V	42	4.167 V	4.233 V	4.150 V	4.250 V

January 1999 TOKO, Inc.

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