TOKO TK11255AUTB, TK11255AUBX, TK11255AMTL, TK11255AMBX, TK11250AUTB Datasheet

TK112xxA

VOLTAGE REGULATOR WITH ON/OFF SWITCH

FEATURES

■High Voltage Precision at ± 2.4%

■Active High On/Off Control

■Very Low Dropout Voltage 80 mV at 30 mA

■Very Low Noise

■Very Small SOT-23L or SOT-89-5 Surface Mount Packages

■Internal Thermal Shutdown

■Short Circuit Protection

APPLICATIONS

■Battery Powered Systems

■Cellular Telephones

■Pagers

■Personal Communications Equipment

■Portable Instrumentation

■Portable Consumer Equipment

■Radio Control Systems

■Toys

■Low Voltage Systems

DESCRIPTION

The TK112xxA is a low dropout linear regulator with a builtin 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. An external capacitor can be connected to the noise bypass pin to lower the output noise level to 30 μVrms.

An internal PNP pass transistor is used to achieve a low dropout voltage of 70 mV (typ.) at 30 mA load current. The TK112xxA has a very low quiescent current of 180 μA at no load and 1 mA with a 30 mA load. The standby current is typically 100 nA. The internal thermal shutdown circuitry limits the junction temperature to below 150 °C. The load current is internally monitored and the device will shutdown in the presence of a short circuit or overcurrent condition at the output.

The TK112xxA is available in either 6 pin SOT-23L or 5 pin SOT-89-5 surface mount packages.

ORDERING INFORMATION

TK112

A

Voltage Code

Tape/Reel Code

Package Code

VOLTAGE CODE

PACKAGE CODE

TAPE/REEL CODE

20	= 2.0 V*		35	= 3.5 V*
21	= 2.1 V		36	= 3.6 V
22	= 2.22 V*		38	= 3.8 V
25	= 2.5 V*		40	= 4.0 V*
28	= 2.8 V*		42	= 4.2 V
29	= 2.9	V	45	= 4.5 V*
30	= 3.0	V*	48	= 4.8	V*
31	= 3.1	V*	49	= 4.9	V
33	= 3.3	V*	50	= 5.0	V*
			55	= 5.5	V

M: SOT-23L	BX : Bulk/Bag
U: SOT-89-5	TL : Tape Left
	(SOT-23L)
	TB : Tape Bottom
	(SOT-89-5)

* Indicates voltage is available in a SOT-89-5 package.

TK112XXA

CONTROL 1 6 VIN

P50

GND		2		5					GND
NOISE									VOUT
		3						4
BYPASS
								TK112xxA • PO
NOISE
BYPASS			1					6	VOUT
GND								5	GND
			2
									VIN
CONTROL			3					4

BLOCK DIAGRAM

VIN		S	S	S			S	VOUT
CONTROL	S			THERMAL
				PROTECTION
					S
		S		–		+
							S
	S				S
				+		–
		S			S
			S	S			S
			BANDGAP
			REFERENCE
	S	S	S		S		S	GND

NOISE BYPASS

January, 1996 TOKO, Inc.	1-4-96	Page 1

TK112xx A

ABSOLUTE MAXIMUM RATINGS

Supply Voltage .........................................................	16 V
Power Dissipation SOT-23L (Note 1) .................	400 mW
Power Dissipation SOT-89-5 (Note 2) ................	800 mW
Storage Temperature Range ...................	-55 to +150 °C

Operating Temperature Range ...................	-30 to +80 °C
Lead Soldering Temp. (3 sec.) ..............................	230 °C
Junction Temperature ...........................................	150 °C

TK11220A ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, VIN = 3.0 V, CP = 0.1 μF, unless otherwise specified.

SYMBOL	PARAMETER	TEST CONDITIONS	MIN	TYP	MAX	UNITS
IIN	Quiescent Current	IO = 0 mA, Except ICONT		170	350	μA
ISTBY	Standby Current	VIN = 8 V, at output off			0.1	μA
VO	Output Voltage	IO = 30 mA	1.92	2.00	2.08	V
V	Dropout Voltage	IO = 60 mA		0.16	0.26	V
DROP
		IO = 150 mA		0.29	0.4	V
IO	Output Current	VOUT = 1.7 V	180	240		mA
IOR	Recommended Output Current				150	mA
Line Reg	Line Regulation	VIN = 3 V → 8 V		3.0	20	mV
Load Reg	Load Regulation	IO = 5 mA → 60 mA (Note 3)		10	50	mV
		IO = 5 mA → 100 mA		20	100	mV
		IO = 5 mA → 150 mA		30	160	mV
RR	Ripple Rejection	100 mV(rms), IO = 10 mA		55		dB
VO/ TA	Output Voltage	IO = 10 mA		0.2		mV/ °C
	Temperature Dependency	-20 °C ≤ TA ≤ + 75 °C
VNO	Output Noise Voltage	10 Hz < f < 80 kHz,		30		μV(rms)
		IO = 30 mA
VREF	Noise Bypass Terminal Voltage			1.25		V
Control Terminal Specification
ICONT	Control Current	Output on, VCONT = 1.8 V		12	30	μA
VCONT	Control Voltage	Output on	1.8			V
		Output off			0.6	V
tr	Output Rise Time	IO = 30 mA,		0.3		ms
		VCONT = 0 V → 1.8 V

Note 1: Power dissipation is 400 mW when mounted as recommended. Derate at 3.2 mW/°C for TA > 25 °C. Note 2: Power dissipation is 800 mW when mounted as recommended. Derate at 6.4 mW/°C for TA > 25 °C. Note 3: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

Page 2	1-4-96	January, 1996 TOKO, Inc.

TK112xxA

TK11221A ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, VIN = 3.1 V, CP = 0.1 μF, unless otherwise specified.

SYMBOL	PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNITS
IIN	Quiescent Current	IO = 0 mA, Except ICONT			170	350	μA
ISTBY	Standby Current	VIN = 8 V, at output off				0.1	μA
VO	Output Voltage	IO = 30 mA		2.02	2.10	2.18	V
VDROP	Dropout Voltage	IO = 60 mA			0.16	0.26	V
		IO = 150 mA			0.29	0.4	V
IO	Output Current	VOUT = 1.8 V		180	240		mA
IOR	Recommended Output Current					150	mA
Line Reg	Line Regulation	VIN = 3.1 V → 8.1 V			3.0	20	mV
Load Reg	Load Regulation	IO = 5 mA → 60 mA (Note 1)			10	50	mV
		IO = 5 mA → 100 mA			20	100	mV
		IO = 5 mA → 150 mA			30	160	mV
RR	Ripple Rejection	100 mV(rms), IO = 10 mA			55		dB
VO/ TA	Output Voltage	VIN	= 3.5 V, IO = 10 mA		0.2		mV/ °C
	Temperature Dependency	-20	°C ≤ TA ≤ + 75 °C
VNO	Output Noise Voltage	10 Hz < f < 80 kHz,			30		μV(rms)
		IO = 30 mA
VREF	Noise Bypass Terminal Voltage				1.25		V
Control Terminal Specification
ICONT	Control Current	Output on, VCONT = 1.8 V			12	30	μA
VCONT	Control Voltage	Output on		1.8			V
		Output off				0.6	V
tr	Output Rise Time	IO = 30 mA,			0.3		ms
		VCONT = 0 V → 1.8 V

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

January, 1996 TOKO, Inc.	1-4-96	Page 3

TK112xx A

TK11222A ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, VIN = 3.22 V, CP = 0.1 μF, unless otherwise specified.

SYMBOL	PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNITS
IIN	Quiescent Current	IO = 0 mA, Except ICONT			170	350	μA
ISTBY	Standby Current	VIN = 8 V, at output off				0.1	μA
VO	Output Voltage	IO = 30 mA		2.14	2.22	2.3	V
VDROP	Dropout Voltage	IO = 60 mA			0.16	0.26	V
		IO = 150 mA			0.29	0.4	V
IO	Output Current	VOUT = 1.92 V		180	240		mA
IOR	Recommended Output Current					150	mA
Line Reg	Line Regulation	VIN = 3.22 V → 8.22 V			3.0	20	mV
Load Reg	Load Regulation	IO = 5 mA → 60 mA (Note 1)			10	50	mV
		IO = 5 mA → 100 mA			20	100	mV
		IO = 5 mA → 150 mA			30	160	mV
RR	Ripple Rejection	100 mV(rms), IO = 10 mA			55		dB
VO/ TA	Output Voltage	VIN	= 3.72 V, IO = 10 mA		0.05		mV/ °C
	Temperature Dependency	-20	°C ≤ TA ≤ + 75 °C
VNO	Output Noise Voltage	10 Hz < f < 80 kHz,			30		μV(rms)
		IO = 30 mA
VREF	Noise Bypass Terminal Voltage				1.25		V
Control Terminal Specification
ICONT	Control Current	Output on, VCONT = 1.8 V			12	30	μA
VCONT	Control Voltage	Output on		1.8			V
		Output off				0.6	V
tr	Output Rise Time	IO = 30 mA,			0.3		ms
		VCONT = 0 V → 1.8 V

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

Page 4	1-4-96	January, 1996 TOKO, Inc.

TK112xxA

TK11225A ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, VIN = 3.5 V, CP = 0.1 μF, unless otherwise specified.

SYMBOL	PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNITS
IIN	Quiescent Current	IO = 0 mA, Except ICONT			170	350	μA
ISTBY	Standby Current	VIN = 8 V, at output off				0.1	μA
VO	Output Voltage	IO = 30 mA		2.42	2.50	2.58	V
VDROP	Dropout Voltage	IO = 60 mA			0.16	0.26	V
		IO = 150 mA			0.29	0.4	V
IO	Output Current	VOUT = 2.2 V		180	240		mA
IOR	Recommended Output Current					150	mA
Line Reg	Line Regulation	VIN = 3.5 V → 8.5 V (Note 1)			3.0	20	mV
Load Reg	Load Regulation	IO = 5 mA → 60 mA			10	50	mV
		IO = 5 mA → 100 mA			20	100	mV
		IO = 5 mA → 150 mA			30	160	mV
RR	Ripple Rejection	100 mV(rms), IO = 10 mA			55		dB
VO/ TA	Output Voltage	VIN	= 4.0 V, IO = 10 mA		0.05		mV/ °C
	Temperature Dependency	-20	°C ≤ TA ≤ + 75 °C
VNO	Output Noise Voltage	10 Hz < f < 80 kHz,			30		μV(rms)
		IO = 30 mA
VREF	Noise Bypass Terminal Voltage				1.25		V
Control Terminal Specification
ICONT	Control Current	Output on, VCONT = 1.8 V			12	30	μA
VCONT	Control Voltage	Output on		1.8			V
		Output off				0.6	V
tr	Output Rise Time	IO = 30 mA,			0.3		ms
		VCONT = 0 V → 1.8 V

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

January, 1996 TOKO, Inc.	1-4-96	Page 5

TK112xx A

TK11228A ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, VIN = 3.8 V, CP = 0.1 μF, unless otherwise specified.

SYMBOL	PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNITS
IIN	Quiescent Current	IO = 0 mA, Except ICONT			170	350	μA
ISTBY	Standby Current	VIN = 8 V, at output off				0.1	μA
VO	Output Voltage	IO = 30 mA		2.72	2.80	2.88	V
VDROP	Dropout Voltage	IO = 60 mA			0.16	0.26	V
		IO = 150 mA			0.29	0.4	V
IO	Output Current	VOUT = 2.5 V		180	240		mA
IOR	Recommended Output Current					150	mA
Line Reg	Line Regulation	VIN = 3.8 V → 8.8 V			3.0	20	mV
Load Reg	Load Regulation	IO = 5 mA → 60 mA (Note 1)			10	50	mV
		IO = 5 mA → 100 mA			20	100	mV
		IO = 5 mA → 150 mA			30	160	mV
RR	Ripple Rejection	100 mV(rms), IO = 10 mA			55		dB
VO/ TA	Output Voltage	VIN	= 4.3 V, IO = 10 mA		0.05		mV/ °C
	Temperature Dependency	-20	°C ≤ TA ≤ + 75 °C
VNO	Output Noise Voltage	10 Hz < f < 80 kHz,			30		μV(rms)
		IO = 30 mA
VREF	Noise Bypass Terminal Voltage				1.25		V
Control Terminal Specification
ICONT	Control Current	Output on, VCONT = 1.8 V			12	30	μA
VCONT	Control Voltage	Output on		1.8			V
		Output off				0.6	V
tr	Output Rise Time	IO = 30 mA,			0.3		ms
		VCONT = 0 V → 1.8 V

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

Page 6	1-4-96	January, 1996 TOKO, Inc.

TK112xxA

TK11229A ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, VIN = 3.9 V, CP = 0.1 μF, unless otherwise specified.

SYMBOL	PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNITS
IIN	Quiescent Current	IO = 0 mA, Except ICONT			170	350	μA
ISTBY	Standby Current	VIN = 8 V, at output off				0.1	μA
VO	Output Voltage	IO = 30 mA		2.82	2.90	2.98	V
VDROP	Dropout Voltage	IO = 60 mA			0.16	0.26	V
		IO = 150 mA			0.29	0.4	V
IO	Output Current	VOUT = 2.6 V			240		mA
IOR	Recommended Output Current					150	mA
Line Reg	Line Regulation	VIN = 3.9 V → 8.9 V			3.0	20	mV
Load Reg	Load Regulation	IO = 5 mA → 60 mA (Note 1)			10	50	mV
		IO = 5 mA → 100 mA			20	100	mV
		IO = 5 mA → 150 mA			30	160	mV
RR	Ripple Rejection	100 mV(rms), IO = 10 mA			55		dB
VO/ TA	Output Voltage	VIN	= 4.4 V, IO = 10 mA		0.05		mV/ °C
	Temperature Dependency	-20	°C ≤ TA ≤ + 75 °C
VNO	Output Noise Voltage	10 Hz < f < 80 kHz,			30		μV(rms)
		IO = 30 mA
VREF	Noise Bypass Terminal Voltage				1.25		V
Control Terminal Specification
ICONT	Control Current	Output on, VCONT = 1.8 V			12	30	μA
VCONT	Control Voltage	Output on		1.8			V
		Output off				0.6	V
tr	Output Rise Time	IO = 30 mA,			0.3		ms
		VCONT = 0 V → 1.8 V

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

January, 1996 TOKO, Inc.	1-4-96	Page 7

TK112xx A

TK11230A ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, VIN = 4.0 V, CP = 0.1 μF, unless otherwise specified.

SYMBOL	PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNITS
IIN	Quiescent Current	IO = 0 mA, Except ICONT			170	350	μA
ISTBY	Standby Current	VIN = 8 V, at output off				0.1	μA
VO	Output Voltage	IO = 30 mA		2.92	3.00	3.08	V
VDROP	Dropout Voltage	IO = 60 mA			0.16	0.26	V
		IO = 150 mA			0.29	0.4	V
IO	Output Current	VOUT = 2.7 V		180	240		mA
IOR	Recommended Output Current					150	mA
Line Reg	Line Regulation	VIN = 4 V → 9 V			3.0	20	mV
Load Reg	Load Regulation	IO = 5 mA → 60 mA (Note 1)			10	50	mV
		IO = 5 mA → 100 mA			20	100	mV
		IO = 5 mA → 150 mA			30	160	mV
RR	Ripple Rejection	100 mV(rms), IO = 10 mA			55		dB
VO/ TA	Output Voltage	VIN	= 4.5 V, IO = 10 mA		0.05		mV/ °C
	Temperature Dependency	-20	°C ≤ TA ≤ + 75 °C
VNO	Output Noise Voltage	10 Hz < f < 80 kHz,			30		μV(rms)
		IO = 30 mA
VREF	Noise Bypass Terminal Voltage				1.25		V
Control Terminal Specification
ICONT	Control Current	Output on, VCONT = 1.8 V			12	30	μA
VCONT	Control Voltage	Output on		1.8			V
		Output off				0.6	V
tr	Output Rise Time	IO = 30 mA,			0.3		ms
		VCONT = 0 V → 1.8 V

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

Page 8	1-4-96	January, 1996 TOKO, Inc.

TK112xxA

TK11231A ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, VIN = 4.1 V, CP = 0.1 μF, unless otherwise specified.

SYMBOL	PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNITS
IIN	Quiescent Current	IO = 0 mA, Except ICONT			170	350	μA
ISTBY	Standby Current	VIN = 8 V, at output off				0.1	μA
VO	Output Voltage	IO = 30 mA		3.02	3.10	3.18	V
VDROP	Dropout Voltage	IO = 60 mA			0.16	0.26	V
		IO = 150 mA			0.29	0.4	V
IO	Output Current	VOUT = 2.8 V		180	240		mA
IOR	Recommended Output Current					150	mA
Line Reg	Line Regulation	VIN = 4.1 V → 9.1 V			3.0	20	mV
Load Reg	Load Regulation	IO = 5 mA → 60 mA (Note 1)			10	50	mV
		IO = 5 mA → 100 mA			20	100	mV
		IO = 5 mA → 150 mA			30	160	mV
RR	Ripple Rejection	100 mV(rms), IO = 10 mA			55		dB
VO/ TA	Output Voltage	VIN	= 4.6 V, IO = 10 mA		0.05		mV/ °C
	Temperature Dependency	-20	°C ≤ TA ≤ + 75 °C
VNO	Output Noise Voltage	10 Hz < f < 80 kHz,			30		μV(rms)
		IO = 30 mA
VREF	Noise Bypass Terminal Voltage				1.25		V
Control Terminal Specification
ICONT	Control Current	Output on, VCONT = 1.8 V			12	30	μA
VCONT	Control Voltage	Output on		1.8			V
		Output off				0.6	V
tr	Output Rise Time	IO = 30 mA,			0.3		ms
		VCONT = 0 V → 1.8 V

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

January, 1996 TOKO, Inc.	1-4-96	Page 9

TK112xx A

TK11233A ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, VIN = 4.3 V, CP = 0.1 μF, unless otherwise specified.

SYMBOL	PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNITS
IIN	Quiescent Current	IO = 0 mA, Except ICONT			170	350	μA
ISTBY	Standby Current	VIN = 8 V, at output off				0.1	μA
VO	Output Voltage	IO = 30 mA		3.22	3.30	3.38	V
V	Dropout Voltage	IO = 60 mA			0.16	0.26	V
DROP
		IO = 150 mA			0.29	0.4	V
IO	Output Current	VOUT = 3 V		180	240		mA
IOR	Recommended Output Current					150	mA
Line Reg	Line Regulation	VIN = 4.3 V → 9.3 V			3.0	20	mV
Load Reg	Load Regulation	IO = 5 mA → 60 mA (Note 1)			10	50	mV
		IO = 5 mA → 100 mA			20	100	mV
		IO = 5 mA → 150 mA			30	160	mV
RR	Ripple Rejection	100 mV(rms), IO = 10 mA			55		dB
VO/ TA	Output Voltage	VIN	= 4.8 V, IO = 10 mA		0.05		mV/ °C
	Temperature Dependency	-20	°C ≤ TA ≤ + 75 °C
VNO	Output Noise Voltage	10 Hz < f < 80 kHz,			30		μV(rms)
		IO = 30 mA
VREF	Noise Bypass Terminal Voltage				1.25		V
Control Terminal Specification
ICONT	Control Current	Output on, VCONT = 1.8 V			12	30	μA
VCONT	Control Voltage	Output on		1.8			V
		Output off				0.6	V
tr	Output Rise Time	IO = 30 mA,			0.3		ms
		VCONT = 0 V → 1.8 V

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

Page 10	1-4-96	January, 1996 TOKO, Inc.

TK112xxA

TK11235A ELECTRICAL CHARACTERISTICS

Test conditions: TA = 25 °C, VIN = 4.5 V, CP = 0.1 μF, unless otherwise specified.

SYMBOL	PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNITS
IIN	Quiescent Current	IO = 0 mA, Except ICONT			170	350	μA
ISTBY	Standby Current	VIN = 8 V, at output off				0.1	μA
VO	Output Voltage	IO = 30 mA		3.42	3.50	3.58	V
VDROP	Dropout Voltage	IO = 60 mA			0.16	0.26	V
		IO = 150 mA			0.29	0.4	V
IO	Output Current	VOUT = 3.2 V		180	240		mA
IOR	Recommended Output Current					150	mA
Line Reg	Line Regulation	VIN = 4.5 V → 9.5 V			3.0	20	mV
Load Reg	Load Regulation	IO = 5 mA → 60 mA (Note 1)			10	50	mV
		IO = 5 mA → 100 mA			20	100	mV
		IO = 5 mA → 150 mA			30	160	mV
RR	Ripple Rejection	100 mV(rms), IO = 10 mA			55		dB
VO/ TA	Output Voltage	VIN	= 5 V, IO = 10 mA		0.05		mV/ °C
	Temperature Dependency	-20	°C ≤ TA ≤ + 75 °C
VNO	Output Noise Voltage	10 Hz < f < 80 kHz,			30		μV(rms)
		IO = 30 mA
VREF	Noise Bypass Terminal Voltage				1.25		V
Control Terminal Specification
ICONT	Control Current	Output on, VCONT = 1.8 V			12	30	μA
VCONT	Control Voltage	Output on		1.8			V
		Output off				0.6	V
tr	Output Rise Time	IO = 30 mA,			0.3		ms
		VCONT = 0 V → 1.8 V

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

January, 1996 TOKO, Inc.	1-4-96	Page 11