Document
TK714xxS
LDO Regulator with base terminal for Current Boost
TK714xxS
1. DESCRIPTION
The TK714xxS is a low dropout linear regulator with internal PNP pass transistor that can supply 100mA load current. The phase compensation in the IC has been optimized that the output capacitor can be omitted. The TK714xxS is provided with the On/Off control function and also with the base terminal for the external transistor that 1A low dropout regulator can be easily composed by connecting external transistor (Hfe around 100).
2. FEATURES
An external transistor can be used. (Base current Typ10mA)
On/Off control available (High ON). No input current at Off mode Excellent output stability (CL 0.022µF,Iout 2mA) High ripple rejection (-70dB at 1kHz) 100mA load current guarantee Output voltage available from 1.3 to 5.0V (0.1V step).
3. APPLICATIONS
Electronic Equipment Battery Powered Systems
Mobile communications, etc.
4. PIN CONFIGURATION
Vin 1 GND 2 Vcont 3
5 4
Vout Base
5. BLOCK DIAGRAM
Vin 1
GND 2 Vcont 3
SW Control Circuit
Bandgap Reference
Error Amp
Over Current Limit
Over Heat Protection
5 Vout 4 BASE
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6. ORDERING INFORMATION
TK714xxS
ORDERING INFORMATION
TK714
Voltage Code EX 33 : 3.3V
50 : 5.0V
Package Code S : SOT23-5
SL
Tape/Reel Code Operating Temp Range C : -30~80 I : -40~85
Standard voltage (net multiplication bold-faced type)
TK71415S TK71420S TK71425S TK71430S TK71435S TK71440S TK71445S TK71450S
TK71416S TK71421S TK71426S TK71431S TK71436S TK71441S TK71446S
TK71417S TK71422S TK71427S TK71432S TK71437S TK71442S TK71447S
TK71413S TK71418S TK71423S TK71428S TK71433S TK71438S TK71443S TK71448S
TK71414S TK71419S TK71424S TK71429S TK71434S TK71439S TK71444S TK71449S
*Please contact your authorized TOKO representatives for voltage availability.
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TK714xxS
7. ABSOLUTE MAXIMUM RATINGS
Parameter
Absolute Maximum Ratings
Supply Voltage Reverse Bias Control pin Voltage Base Drive pin Voltage Storage Temperature Range Power Dissipation
Operating Condition
Operating Temperature Range Operating Voltage Range Short Circuit Current
Symbol
VccMAX VrevMAX VcontMAX VbaseMAX
Tstg PD
TOP VOP Ishort
Rating
-0.4 ~ 16 -0.4 ~ 6 -0.4 ~ 16 -0.4 ~ 16 -55 ~ 150 500 when mounted on PCB
-30 ~ 80 1.8 ~ 14
200
Units
Ta=25°C Conditions
V V V V °C mW * Internal Limited Tj=150°C
°C V mA
8. ELECTRICAL CHARACTERISTICS
Unless otherwise specified Vin=VoutTyp+1.0V ,Vcont=1.8V
Parameter
Symbol Min
Value Typ
Max
Output Voltage
Vout
2% or 60mV *1
Line Regulation
LinReg
1.0 5.0
Load Regulation
LoaReg
0.7 3.0
0.6 2.5
Dropout Voltage
Vdrop
105 180
180 280
Maximum Output Current IoutMAX 120
150
Supply Current
Icc
50 80
Standby Current
Istandby
0 0.1
Base drive Current
Ibase
7 10
Control Terminal
Control Current
Icont
0.9 3.0
Control Voltage
Vcont
1.8
0.8
Ta=25°C
Units
Conditions
V mV %Vout %Vout mV mV mA µA µA mA
Iout=5mA ∆Vin=5V Iout=5 ~ 100mA (Vout=1.5~2.0V) Iout=5 ~ 100mA (Vout=2.1~5.0V) Iout=50mA *2 Iout=100mA *2 Vout 10% drop Vout ON state Iout=0mA Vout OFF state Vin=10V *3
µA Vcont=1.8V Output ON state V Vout ON state V Vout OFF state
*1 Refer to Table 1. *2 For Vout 2.0V, no regulations. *3 Make sure that this terminal is not connected to GND otherwise the IC may damaged with excessive current due to
circuit structure.
I rank (-40~85 ) is separately provided.
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TK714xxS
Output voltage standard table ( 2% or 60mV)
Vout TYP (V)
1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1
Vout Min (V)
1.240 1.340 1.440 1.540 1.640 1.740 1.840 1.940 2.040 2.140 2.240 2.340 2.440 2.540 2.640 2.740 2.840 2.940 3.038
Vout MAX (V)
1.360 1.460 1.560 1.660 1.760 1.860 1.960 2.060 2.160 2.260 2.360 2.460 2.560 2.660 2.760 2.860 2.960 3.060 3.162
Vin (V)
2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1
Table 1 Vout TYP (V) 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0
Vout Min (V)
3.136 3.234 3.232 3.430 3.528 3.626 3.724 3.822 3.920 4.018 4.116 4.214 4.312 4.410 4.508 4.606 4.704 4.802 4.900
Vout MAX (V)
3.264 3.366 3.468 3.570 3.672 3.774 3.876 3.978 4.080 4.182 4.284 4.386 4.488 4.590 4.692 4.794 4.896 4.998 5.100
Vin (V)
4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6.0
9. TEST CIRCUIT
Standard circuit (Iout 100mA)
Iin A
Cin Vin 0.1µF
Vin 1
GND 2
Vcont
Icont A3
Vcont
Vout 5
CL 0.1µF
Iout
V Vout
4 Base
Applied circuit: When external PNPTr is used
EXTERNAL PNP Tr
Iin A
Cin Vin 0.1µF
Vin 1
GND 2
Vcont
Icont A3
Vcont
Vout 5
CL Iout
V Vout
4 Base
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Input/Output capacitors (CL)
Linear regulators require input and output capacitors in order to maintain the regulator’s loop stability. The equivalent series resistance(ESR) of the output capacitor must be in the stable operation area. However, it is recommended to use as large a value of capacitance as is practical. The output noise a.