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TK73235MIL
Datasheet
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TOKO TK73280MILH, TK73280MCLH, TK73280MIL, TK73280MCL, TK73270MILH Datasheet

...
January 1999 TOKO, Inc. Page 1
TK732xx
C
PULSE
CONTROL
GND
BASE
BYPASS
V
SENSE
I
PK
V
IN
TK732xx
01S
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
SENSE
Pin (Off Mode)
■ Continuous and Pulsed Current Modes
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
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
TK732 M L
ORDERING INFORMATION
Tape/Reel Code
TAPE/REEL CODE
L: Tape Left
TEMP. RANGE
C: -30 to 80 C ** I : -40 to 85
C
Temp. Code
Package Code
Voltage Code
Grade
* Unavailable with I Rank ** unless Otherwise Specified *** TK73241MCLH, TK73242MCLH Available Only
PACKAGE CODE
M: SOT-23L-8
GRADE
None: Standard 2% H: High (Special) **
*
BLOCK DIAGRAM
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.
CONTROL
NOISE BYPASS
V
IN
THERMAL
SENSOR
ON/OFF
CIRCUIT
BANDGAP
REFERENCE
LEAKAGE
PROTECTION
I
PK C
PULSE
BASEVSENSE
GND
LOW DROPOUT REGULATOR
Page 2 January 1999 TOKO, Inc.
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 = V
OUT(TYP)
+ 1 V, TA = 25 °C, unless otherwise specified.
LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU
I
Q
tnerruCtnecseiuQI
TUO
IgnidulcxE,Am0=
TNOC
052063Aµ
I
YBTS
tnerruCybdnatSV
NI
FFOtuptuO,V8=1.0Aµ
I
)KAEL(R
)5etoN(egakaeLsaiBesreveR
V
R
lanretxEgnidulcxE,V5=
FFOtuptuO,rotsisnarT
205An
I
TUO
tnerruCtuptuOtnednepeDrotsisnarTlanretxEA/NA
V
TUO
egatloVtuptuOI
TUO
1elbaTeeS,Am03=V
V
PORD
egatloVtuoporDtnednepeDrotsisnarTlanretxEA/NV
geReniLnoitalugeReniL
VNIV=
)PYT(TUO
otV1+
V
)PYT(TUO
)2etoN(V6+
0.302Vm
gerdaoLnoitalugeRdaoLtnednepeDrotsisnarTlanretxE01Vm
I
)L(ESAB
WOLtnerruCesaBV8.1 ≤ VNI≤ V451Am
I
)H(ESAB
HGIHtnerruCesaBV1.4 ≤ VNI≤ V2104Am
V
ESNES
egatloVtceteDtimiLtnerruC
edoMtimiLtnerruCsuounitnoC08001021Vm
edoMtimiLtnerruCesluP0709011Vm
RRnoitcejeRelppiR
C,zH004=f
L
,Fµ01=
C
N
V,Fµ1.0=
NI
V=
)PYT(TUO
,V5.1=
I
TUO
V,Am03=
ELPPIR
,smrVm001=
)3etoN(
75Bd
V
ON
esioNtuptuO
,zHk03otzH004=FPB,zHk1=f
)3etoN(
31.0zH/Vµ
I
ESLUP
C
ESLUP
tnerruClanimreTniP)4etoN(515254Aµ
∆V
TUO
/∆T
tneiciffeoCerutarepmeT 02C°/mpp
V
fer
egatloVecnerefeR 52.1V
SNOITACIFICEPSLANIMRETLORTNOC
I
TNOC
tnerruClortnoCV
TNOC
NOtuptuO,V8.1=5.602Aµ
V
)NO(TNOC
)NO(egatloVlortnoCNOtuptuO8.1V
V
)FFO(TNOC
)FFO(egatloVlortnoCFFOtuptuO6.0V
January 1999 TOKO, Inc. Page 3
TK732xx
TK732xx ELECTRICAL CHARACTERISTICS TABLE 1 (STANDARD DEVICES)
Test Conditions: VIN = V
OUT(TYP)
+ 1 V, I
OUT
= 30 mA, TA = 25 °C, unless otherwise specified.
TK732xx ELECTRICAL CHARACTERISTICS (STANDARD DEVICES) CONT.
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
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
OUT
> 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.
Room Temp. Range (TA = 25 °C) Full Temp. Range (TA = -40 to +85 °C)
(Applies to "I" Rank Only)
Output Voltage Voltage Code V
OUT(MIN)
V
OUT(MAX)
V
OUT(MIN)
V
OUT(MAX)
Page 4 January 1999 TOKO, Inc.
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
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
TK73241MCLH, TK73242MCLH ELECTRICAL CHARACTERISTICS
Test conditions: VIN = V
OUT(TYP)
+ 1 V, TA = 25 °C, unless otherwise specified.
LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU
I
Q
tnerruCtnecseiuQI
TUO
IgnidulcxE,Am0=
TNOC
042003Aµ
I
YBTS
tnerruCybdnatSV
NI
FFOtuptuO,V8=1.0Aµ
I
)KAEL(R
)5etoN(egakaeLsaiBesreveR
V
R
lanretxEgnidulcxE,V5=
FFOtuptuO,rotsisnarT
205An
I
TUO
tnerruCtuptuOtnednepeDrotsisnarTlanretxEA/NA
V
TUO
egatloVtuptuOI
TUO
2elbaTeeS,Am03=V
V
PORD
egatloVtuoporDtnednepeDrotsisnarTlanretxEA/NV
geReniLnoitalugeReniL
V
NI
V=
)PYT(TUO
otV1+
V
)PYT(TUO
)2etoN(V6+
0.302Vm
gerdaoLnoitalugeRdaoLtnednepeDrotsisnarTlanretxE01Vm
I
ESAB
tnerruCesaB 05Am
V
ESNES
egatloVtceteDtimiLtnerruC
edoMtimiLtnerruCsuounitnoC58001511Vm
edoMtimiLtnerruCesluP5709501Vm
RRnoitcejeRelppiR
C,zH004=f
L
,Fµ01=
C
N
V,Fµ1.0=
NI
V=
)PYT(TUO
,V5.1=
I
TUO
V,Am03=
ELPPIR
,smrVm001=
)3etoN(
75Bd
V
ON
esioNtuptuO
,zHk03otzH004=FPB,zHk1=f
)3etoN(
31.0zH/Vµ
I
ESLUP
C
ESLUP
tnerruClanimreTniP)4etoN(515254Aµ
∆V
TUO
/∆T
tneiciffeoCerutarepmeT 02C°/mpp
V
fer
egatloVecnerefeR 52.1V
SNOITACIFICEPSLANIMRETLORTNOC
I
TNOC
tnerruClortnoCV
TNOC
NOtuptuO,V8.1=5.602A
V
)NO(TNOC
)NO(egatloVlortnoCNOtuptuO8.1V
V
)FFO(TNOC
)FFO(egatloVlortnoCFFOtuptuO6.0V
January 1999 TOKO, Inc. Page 5
TK732xx
TK73241MCLH, TK73242MCLH ELECTRICAL CHARACTERISTICS CONT.
TK73241MCLH, TK73242MCLH ELECTRICAL CHARACTERISTICS TABLE 2
Test Conditions: VIN = V
OUT(TYP)
+ 1 V, I
OUT
= 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 V
OUT(MIN)
V
OUT(MAX)
V
OUT(MIN)
V
OUT(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
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
OUT
> 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.
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