TOKO TK732xx User Manual

C

PULSE

CONTROL

GND

BASE

NOISE

BYPASS

V

SENSE

I

PK

V

IN

查询TK73211MCLH供应商

TK732xx

LOW DROPOUT REGULATOR

FEATURES

■ Up to 5 A Output Current Capability With External

PNP Transistor

■ Internal Short Circuit Protection

■ Excellent Load Regulation

■ CMOS/TTL-Compatible On/Off Switch

■ Internal Reverse Bias Current Protection Switch

■ Internal Thermal Shutdown

■ Broad Operating Voltage Range

■ High Impedance V

Pin (Off Mode)

SENSE

■ Continuous and Pulsed Current Modes

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.

APPLICATIONS

■ Battery Powered Systems

■ Cellular/Cordless Telephones

■ Radio Control Systems

■ Wireless Communications Systems

■ Portable Instrumentations

■ Portable Computers

■ Personal Digital Assistants

■ Local Area Network (LAN) Receivers

■ Lithium Ion Battery Chargers

■ Power Recovery for Microprocessors

TK732xx

01S

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

Grade

Voltage Code

Package 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

January 1999 TOKO, Inc. Page 1

TAPE/REEL CODE

L: Tape Left

TEMP. RANGE

C: -30 to 80 C **
I : -40 to 85

* Unavailable with I Rank
** unless Otherwise Specified
*** TK73241MCLH, TK73242MCLH Available Only

C

Tape/Reel Code
Temp. Code

PACKAGE CODE

M: SOT-23L-8

GRADE

None: Standard 2%
H: High (Special) **

CONTROL

*

BLOCK DIAGRAM

I

V

PK C

IN

ON/OFF

CIRCUIT

BANDGAP

REFERENCE

GND

NOISE BYPASS

PULSE

THERMAL

SENSOR

BASEVSENSE

LEAKAGE

PROTECTION

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

TK732xx ELECTRICAL CHARACTERISTICS (STANDARD DEVICES)

Test conditions: VIN = V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

OUT(TYP)

+ 1 V, TA = 25 °C, unless otherwise specified.

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

I

Q

I

YBTS

I

)KAEL(R

I

TUO

V

TUO

V

PORD

geReniLnoitalugeReniL

gerdaoLnoitalugeRdaoLtnednepeDrotsisnarTlanretxE01Vm

I

)L(ESAB

I

)H(ESAB

V

ESNES

RRnoitcejeRelppiR

tnerruCtnecseiuQI

tnerruCybdnatSV

TUO

NI

V

R

)5etoN(egakaeLsaiBesreveR

IgnidulcxE,Am0=

TNOC

052063Aµ

FFOtuptuO,V8=1.0Aµ

lanretxEgnidulcxE,V5=

FFOtuptuO,rotsisnarT

205An

tnerruCtuptuOtnednepeDrotsisnarTlanretxEA/NA

egatloVtuptuOI

TUO

1elbaTeeS,Am03=V

egatloVtuoporDtnednepeDrotsisnarTlanretxEA/NV

VNIV=
V

)PYT(TUO

)PYT(TUO

otV1+

)2etoN(V6+

0.302Vm

WOLtnerruCesaBV8.1 ≤ VNI≤ V451Am

HGIHtnerruCesaBV1.4 ≤ VNI≤ V2104Am

edoMtimiLtnerruCsuounitnoC08001021Vm

egatloVtceteDtimiLtnerruC

edoMtimiLtnerruCesluP0709011Vm

C,zH004=f

C

N

I

TUO

L

V,Fµ1.0=

NI

V,Am03=

,Fµ01=

V=

)PYT(TUO

ELPPIR

,V5.1=
,smrVm001=

75Bd

)3etoN(

V

I

∆V
V

ON

/∆T

C

ESLUP

ESLUP

TUO

fer

esioNtuptuO

)3etoN(

tnerruClanimreTniP)4etoN(515254Aµ

tneiciffeoCerutarepmeT 02C°/mpp

egatloVecnerefeR 52.1V

,zHk03otzH004=FPB,zHk1=f

31.0zH/Vµ

SNOITACIFICEPSLANIMRETLORTNOC

I

TNOC

V
V

)NO(TNOC

)FFO(TNOC

tnerruClortnoCV

TNOC

NOtuptuO,V8.1=5.602Aµ

)NO(egatloVlortnoCNOtuptuO8.1V

)FFO(egatloVlortnoCFFOtuptuO6.0V

Page 2 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 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 = V

Output Voltage Voltage Code V

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

> 4.8 V.

OUT

OUT(TYP)

+ 1 V, I

= 30 mA, TA = 25 °C, unless otherwise specified.

OUT

Room Temp. Range (TA = 25 °C) Full Temp. Range (TA = -40 to +85 °C)

(Applies to "I" Rank Only)

OUT(MIN)

V

OUT(MAX)

V

OUT(MIN)

V

OUT(MAX)

January 1999 TOKO, Inc. Page 3

TK732xx

ABSOLUTE MAXIMUM RATINGS (SPECIAL 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

TK73241MCLH, TK73242MCLH ELECTRICAL CHARACTERISTICS

Test conditions: VIN = V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

OUT(TYP)

+ 1 V, TA = 25 °C, unless otherwise specified.

Storage Temperature Range ................... -55 to +150 °C

Operating Temperature Range ...................-10 to +60 °C

Operating Voltage Range............................ 1.8 to 14.5 V

Junction Temperature ........................................... 150 °C

Lead Soldering Temperature (10 s) ...................... 235 °C

I

Q

I

YBTS

I

)KAEL(R

I

TUO

V

TUO

V

PORD

geReniLnoitalugeReniL

gerdaoLnoitalugeRdaoLtnednepeDrotsisnarTlanretxE01Vm

I

ESAB

V

ESNES

RRnoitcejeRelppiR

tnerruCtnecseiuQI

tnerruCybdnatSV

TUO

NI

V

R

)5etoN(egakaeLsaiBesreveR

IgnidulcxE,Am0=

TNOC

042003Aµ

FFOtuptuO,V8=1.0Aµ

lanretxEgnidulcxE,V5=

FFOtuptuO,rotsisnarT

205An

tnerruCtuptuOtnednepeDrotsisnarTlanretxEA/NA

egatloVtuptuOI

TUO

2elbaTeeS,Am03=V

egatloVtuoporDtnednepeDrotsisnarTlanretxEA/NV

V=

V

NI

V

)PYT(TUO

)PYT(TUO

otV1+

)2etoN(V6+

0.302Vm

tnerruCesaB 05Am

edoMtimiLtnerruCsuounitnoC58001511Vm

egatloVtceteDtimiLtnerruC

edoMtimiLtnerruCesluP5709501Vm

C,zH004=f

C

N

I

TUO

L

V,Fµ1.0=

NI

V,Am03=

,Fµ01=

V=

)PYT(TUO

ELPPIR

,V5.1=
,smrVm001=

75Bd

)3etoN(

V

I

∆V
V

ON

/∆T

C

ESLUP

ESLUP

TUO

fer

esioNtuptuO

)3etoN(

tnerruClanimreTniP)4etoN(515254Aµ

tneiciffeoCerutarepmeT 02C°/mpp

egatloVecnerefeR 52.1V

,zHk03otzH004=FPB,zHk1=f

31.0zH/Vµ

SNOITACIFICEPSLANIMRETLORTNOC

I

TNOC

V
V

)NO(TNOC

)FFO(TNOC

tnerruClortnoCV

TNOC

NOtuptuO,V8.1=5.602A

)NO(egatloVlortnoCNOtuptuO8.1V

)FFO(egatloVlortnoCFFOtuptuO6.0V

Page 4 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 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 = V

Output Voltage Voltage Code V

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

> 4.8 V.

OUT

OUT(TYP)

+ 1 V, I

= 30 mA, TA = 25 °C, unless otherwise specified.

OUT

Room Temp. Range (TA = 25 °C) Full Temp. Range (TA = -10 to +60 °C)

OUT(MIN)

V

OUT(MAX)

V

OUT(MIN)

V

OUT(MAX)

January 1999 TOKO, Inc. Page 5