TOKO TK71750SCL, TK71748SCL, TK71749SCL, TK71747SCL, TK71746SCL Datasheet

TK717xxS

LOW DROPOUT VOLTAGE REGULATOR

FEATURES

nVery Good Stability (CL = 0.22 mF is Stable For Any Type Capacitor withVOUT ³ 1.8 V)

nBuilt-in Shunt Circuit of Output to GND. The Stored

Energy of the Output Capacitor is Discharged Quickly

nWide Operating Voltage Range (1.8 V ~ 14 V)

nVery Low Dropout Voltage (VDROP = 103 mV at 100 mA)

nPeak Output Current is 370 mA (0.3 V DROP Point)

nVery Low Quiescent Current (IQ = 72 uA at IOUT = 0 mA)

nGood Ripple Rejection Ratio (80 dB at 1 kHz)

nHigh Precision Output Voltage (± 1.5 % or ± 50 mV)

nSuitable for Very Low Noise Applications

nBuilt-in Active High On/Off Control (0.1 mA Max

Standby Current)

nBuilt-in Short Circuit Protection

nBuilt-in Thermal Shutdown

nVery Small Surface Mount Package (SOT23-5)

DESCRIPTION

TK717xxS is a low dropout linear regulator with a built-in electronic switch. The internal 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 logic high level. In the OFF state, the output impedance becomes very low, quickly discharging the output capacitor. An external capacitor can be connected to the noise bypass pin to lower the output noise level to 30 ~ 50 mVRMS. An internal PNP pass transistor is included to achieve a low dropout voltage of 103 mV at 100 mA load current. The TK717xx has an exceptionally

APPLICATIONS

nBattery Powered Systems

nMeasurement Systems

nMobile Communications Systems

nCordless Phone, PHS, GSM, CDMA

nIndustrial Equipment

nPersonal Computers, Barcode Readers

low quiescent current of 72 mA at no load and 0.8 mA with a 50 mA load. The standby current is typically 100 pA. The circuit features very good stability. The ripple rejection is 90 dB at 400 Hz and 80 dB at 1 kHz. Stable operation is achieved with an output capacitor as low as 0.22 mF; a capacitor of any type may be used. (However, the larger the output capacitor is, the better the overall characteristics will be.)

The TK717xxS is available in a very small SOT23-5 surface mount package.

	TK717xxS
	VIN	VOUT
01S	GND
	CONTROL	NOISE
		BYPASS

	ORDERING INFORMATION				BLOCK DIAGRAM
	TK717		S	L
					VIN		VOUT
Voltage Code				Tape/Reel Code	CONTROL CIRCUIT
					CONTROL	CONSTANT
	Package Code			Operating Temp. Range			CURRENT
							SOURCE
							+
							-
							THERMAL &
VOLTAGE CODE				TAPE/REEL CODE	BANDGAP		OVER CURRENT
							PROTECTION
15 = 1.5 V	24 = 2.4 V	33 = 3.3 V	42 = 4.2 V	L: Tape Left	REFERENCE
16 = 1.6 V	25 = 2.5 V	34 = 3.4 V	43 = 4.3 V
							AUTO
17 = 1.7 V	26 = 2.6 V	35 = 3.5 V	44 = 4.4 V
							DISCHARGE
18 = 1.8 V	27 = 2.7 V	36 = 3.6 V	45 = 4.5 V	OPERATING TEMP. RANGE			CIRCUIT
19 = 1.9 V	28 = 2.8 V	37 = 3.7 V	46 = 4.6 V	C: -30 ~ 80°C
20 = 2.0 V	29 = 2.9 V	38 = 3.8 V	47 = 4.7 V
21 = 2.1 V	30 = 3.0 V	39 = 3.9 V	48 = 4.8 V	PACKAGE CODE	GND		NOISE
22 = 2.2 V	31 = 3.1 V	40 = 4.0 V	49 = 4.9 V
						BYPASS
23 = 2.3 V	32 = 3.2 V	41 = 4.1 V	50 = 5.0 V	S: SOT23-5

October 2001 TOKO, Inc.

Page 1

TK717xxS

ABSOLUTE MAXIMUM RATINGS

Supply Voltage ...............................................	-0.4 to16 V
Power Dissipation (Note 1) .................................	500 mW
Reverse Bias Voltage .....................................	-0.4 to 6	V
Operating Voltage Range ...............................	1.8 to 14	V
Storage Temperature Range .....................	-55 to +150 °C

Operating Temperature Range .....................	-30 to +80 °C
Noise Bypass Pin Voltage ..............................	-0.4 to 5	V
Control Pin Voltage .......................................	-0.4 to 16	V
Short Circuit Current ............................................	410 mA

TK717xxSCL ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, unless otherwise specified.

SYMBOL	PARAMETER	TEST CONDITIONS		MIN	TYP	MAX	UNITS
VOUT	Output Voltage				See Table 1
Line Reg	Line Regulation	VIN = VOUT(TYP) + 1 V to VOUT(TYP) + 6 V, D V = 5 V			0.3	5	mV
Load Reg	Load Regulation	5 mA < IOUT < 100 mA, Note 2			8	24	mV
		5 mA < IOUT < 200 mA, Note 2			27	61	mV
VDROP	Dropout Voltage	IOUT = 50 mA			65	130	mV
	(Note 5)
		IOUT = 100 mA			103	200	mV
		IOUT = 200 mA (2.4 V £ VOUT)			163	300	mV
		IOUT = 180 mA (2.1 V £ VOUT < 2.4 V)			163	300	mV
IOUT (MAX)	Maximum Output Current	When VOUT Down 0.3 V, Note 2		280	370		mA
		1.8 V £ VIN £ 2.1 V, Reference Value			250		mA
IQ	Quiescent Current	IOUT = 0 mA	Excluding ICONT		72	110	mA
ISTBY	Standby Current	VCC = 8 V, VCONT £ 0.15 V, Off Mode			0.0	0.1	mA
IGND	GND Pin Current	IOUT = 50 mA			0.8	1.5	mA
Idis	Discharge Current	VREV = 2 V,	Off Mode (71720)	13	29		mA
		VREV = 3 V,	Off Mode (71730)	23	38		mA
		VREV = 4 V,	Off Mode (71740)	25	41		mA
		VREV = 5 V,	Off Mode (71750)	27	44		mA

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October 2001 TOKO, Inc.

TK717xxS

TK717xxSCL ELECTRICAL CHARACTERISTICS (CONT.)

Test conditions: TA = 25 °C, unless otherwise specified.

SYMBOL	PARAMETER	TEST CONDITIONS		MIN			TYP		MAX	UNITS
CONTROL TERMINAL SPECIFICATIONS (See Note 3 and 4)
ICONT	Control Current	VOUT = 1.8 V On State					0.86		2.5	µA
VCONT(ON)	Control Voltage ON	On Mode		1.6						V
VCONT(OFF)	Control Voltage OFF	Off Mode							0.6	V
VREF	Noise Bypass Terminal						1.26			V
	Voltage
DVOUT/DT	Temperature Coefficient	Reference Value					Typ = 25 ppm/°C
VNO	Output Noise	Reference Value	0.20 mV/ Ö					Typical at 1kHz
					Hz

Note 1: Power dissipation is 150 mW in free air. Power dissipation is 500 mW when mounted as recommended. Derate at 4.0 mW/°C for operation above 25°C.

Note 2: This value depends on the output voltage. This is a reference value for a 3 V output device. Note 3: The input current decreases to the pA level by connecting the control terminal to GND. Note 4: The pull-down resistor is not built-in.

Note 5: The minimum operating voltage for VIN can be 1.8 V. Also, the minimum voltage required for VIN is VIN = VDROP + VOUT. As a result, operating at VOUT £ 2.0 V at the mimimum input operating voltage is not preferred.

General Note: The operation of -30 °C to 80 °C is guaranteed by design (verified by sample inspection). General Note: Exceeding the “Absolute Maximum Rating “may damage the device.

General Note: Output noise is 0.20 mV/ ÖHz typical at 1 kHz: BW 400 to 30 kHz and 30 ~ 60 m Vrms.

General Note: Connecting a capacitor to the noise by pass pin will decrease the output noise voltage.

October 2001 TOKO, Inc.

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TK717xxS

TK717xxSCL ELECTRICAL CHARACTERISTICS TABLE 1

Test Conditions: VIN = VOUT(TYP) + 1 V, IOUT = 5 mA, TA = 25 °C, unless otherwise specified.

OUTPUT	VOLTAGE			TEST		OUTPUT	VOLTAGE		VOUT	TEST
VOLTAGE	CODE	VOUT MIN	VOUT MAX	VOLTAGE		VOLTAGE	CODE	VOUT MIN	MAX	VOLTAGE
1.5 V	15	1.450 V	1.550 V	2.5 V		3.3 V	33	3.250 V	3.350 V	4.3 V
1.6 V	16	1.550 V	1.650 V	2.6V		3.4 V	34	3.349 V	3.451 V	4.4 V
1.7 V	17	1.650 V	1.750 V	2.7 V		3.5 V	35	3.447 V	3.553 V	4.5 V
1.8 V	18	1.750 V	1.850 V	2.8 V		3.6 V	36	3.546 V	3.654 V	4.6 V
1.9 V	19	1.850 V	1.950 V	2.9 V		3.7 V	37	3.644 V	3.756 V	4.7 V
2.0 V	20	1.950 V	2.050 V	3.0 V		3.8 V	38	3.743 V	3.857 V	4.8 V
2.1 V	21	2.050 V	2.150 V	3.1 V		3.9 V	39	3.841 V	3.959 V	4.9 V
2.2 V	22	2.150 V	2.250 V	3.2 V		4.0 V	40	3.940 V	4.060 V	5.0 V
2.3 V	23	2.250 V	2.350 V	3.3 V		4.1 V	41	4.038 V	4.162 V	5.1 V
2.4 V	24	2.350 V	2.450 V	3.4 V		4.2 V	42	4.137 V	4.263 V	5.2 V
2.5 V	25	2.450 V	2.550 V	3.5 V		4.3 V	43	4.235 V	4.365 V	5.3 V
2.6 V	26	2.550 V	2.650 V	3.6 V		4.4 V	44	4.334 V	4.466 V	5.4 V
2.7 V	27	2.650 V	2.750 V	3.7 V		4.5 V	45	4.432 V	4.568 V	5.5 V
2.8 V	28	2.750 V	2.850 V	3.8 V		4.6 V	46	4.531 V	4.669 V	5.6 V
2.9 V	29	2.850 V	2.950 V	3.9 V		4.7 V	47	4.629 V	4.771 V	5.7 V
3.0 V	30	2.950 V	3.050 V	4.0 V		4.8 V	48	4.728 V	4.872 V	5.8 V
3.1 V	31	3.050 V	3.150 V	4.1 V		4.9 V	49	4.826 V	4.974 V	5.9 V
3.2 V	32	3.150 V	3.250 V	4.2 V		5.0 V	50	4.925 V	5.075 V	6.0 V

The output voltage table indicates the standard value when manufactured.

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October 2001 TOKO, Inc.