Document
TK715xxAS
LOW DROPOUT VOLTAGE REGULATOR FEATURES
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High Voltage Precision at ± 2.0% or ± 60 mV Very Low Quiescent Current Very Low Dropout Voltage Reverse Voltage Protection Miniature Package (SOT23-3) Short Circuit Protection High Ripple Rejection Can use Multilayer Ceramic Capacitors
APPLICATIONS
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Battery Powered Systems Cellular Telephones Pagers Personal Communications Equipment Portable Instrumentation Portable Consumer Equipment Radio Control Systems Toys Low Voltage Systems
DESCRIPTION
The TK715xx is a low dropout linear regulator housed in a small SOT23-3 package, rated at 400 mW. An internal PNP transistor is used to achieve a low dropout voltage of 105 mV (typ.) at 50 mA load current. This device offers high precision output voltage of ± 2.0 % or ± 60 mV. The TK715xx has a very low quiescent current of 25 µA (typ.) at no load. The low quiescent current and dropout voltage make this part ideal for battery powered applications. The internal reverse bias protection eliminates the requirement for a reverse voltage protection diode, saving cost and board space. The high 60 dB ripple rejection and low noise provide enhanced performance for critical applications.
TK715xxAS
VIN
VOUT
30T
20P
GND
ORDERING INFORMATION
TK715
Voltage Code
ASCL
Tape/ Reel Code Temp. Code Package Code
BLOCK DIAGRAM
VOLTAGE CODE
15 = 1.5 V 16 = 1.6 V 17 = 1.7 V 18 = 1.8 V 19 = 1.9 V 20 = 2.0 V 21 = 2.1 V 22 = 2.2 V 23 = 2.3 V 24 = 2.4 V 25 = 2.5 V 26 = 2.6 V 27 = 2.7 V 28 = 2.8 V 29 = 2.9 V 30 = 3.0 V 31 = 3.1 V 32 = 3.2 V 33 = 3.3 V 34 = 3.4 V 35 = 3.5 V 36 = 3.6 V 37 = 3.7 V 38 = 3.8 V 39 = 3.9 V 40 = 4.0 V 41 = 4.1 V 42 = 4.2 V 43 = 4.3 V 44 = 4.4 V 45 = 4.5 V 46 = 4.6 V 47 = 4.7 V 48 = 4.8 V 49 = 4.9 V 50 = 5.0 V 60 = 6.0 V 70 = 7.0 V 80 = 8.0 V 90 = 9.0 V
TEMPERATURE CODE
C -30 to +80 °C
TAPE/REEL CODE
L: Tape Left
VIN VOUT THERMAL PROTECTION
PACKAGE CODE
S : SOT-23-3
+
+
BANDGAP REFERENCE
GND
March 2001 TOKO, Inc.
Page 1
TK715xxAS
ABSOLUTE MAXIMUM RATINGS (VOUT£ 5.0 V)
Supply Voltage ............................................. -0.4 to 19 V Power Dissipation (Note 1) ................................ 400 mW Reverse Bias ............................................................. 8 V Short Circuit Current ........................................... 170 mA Storage Temperature (Ambient) .............. -55 to +150 °C Operating Temperature (Ambient) ............ -30 to +80 °C Max. Operating Temperature (Junction) ............. 125 °C Operating Voltage Range ........................... 1.8 to 18.0 V Junction Temperature ......................................... 150 °C Lead Soldering Temperature (10 s) ..................... 235 °C
TK715xx ELECTRICAL CHARACTERISTICS (VOUT £ 5.0 V)
Test conditions: VIN = VOUT(TYP) + 1V, TA = 25 °C, unless otherwise specified.
SYMBOL IQ IGND VOUT Line Reg Load Reg
PARAMETER Quiescent Current Ground Pin Current Output Voltage Line Regulation Load Regulation
TEST CONDITIONS IOUT = 0 mA IOUT = 15 mA IOUT = 5 mA VIN = VOUT(TYP) + 1 V to VOUT(TYP) + 6 V IOUT = 5 to 100 mA, (Note 2) IOUT = 50 mA
MIN
TYP 25 300 See Table 1 3 18 0.105 0.16 0.16
MAX 45 500
UNITS µA µA V
12 36 0.18 0.28 0.30
mV mV V V V mA
VDROP
Dropout Voltage (Note 5)
IOUT = 100 mA, 2.4 V £ VOUT £ 5.0 V IOUT = 100 mA, 2.1 V £ VOUT £ 2.4 V 115
155 90 60 30 dB ppm/°C
IOUT(MAX) RR
Continuous Output Current Ripple Rejection
1.8 V £ Vin £ 2.1 V (Note 3)
(Note 4) IOUT = 5 mA
70
∆VOUT / ∆T Temperature Coefficient
Note 1: Power dissipation is 400 mW when mounted as recommended. Derate at 3.2 mW/°C for operation above 25 °C. Note 2: Refer to “Definition of Terms.” Note 3: Please refer to the Applications Section for more information. Note 4: Ripple rejection is measured at VR = 200 mVrms, VIN = VOUT(TYP) + 2 V, IOUT = 10 mA, CL = 2.2 µF, f = 100 Hz. 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 minimum input operating voltage is not preferred. Gen. Note: Parameters with min. or max. values are 100% tested at TA = 25 °C.
Page 2
March 2001 TOKO, Inc.
TK715xxAS
ABSOLUTE MAXIMUM RATINGS (VOUT ³ 5.1 V)
Supply Voltage ............................................. -0.4 to 19 V Power Dissipation (Note 1) ................................ 400 mW Reverse Bias ............................................................. 8 V Short Circuit Current ........................................... 170 mA Storage Temperature (Ambient) .............. -55 to +150 °C Operating Temperature (Ambient) ............ -30 to +80 °C Max. Operating Temperature (Junction) ............. 125 °C Operating Voltage Range .............................. 1.8 to 18 V Junction Temperature ......................................... 150 °C Lead Soldering Temperature (10 s) ..................... 235 °C
TK715xx ELECTRICAL CHARACTERISTICS (VOUT ³ 5.1 V)
Test conditions: VIN = VOUT(TYP) + 1V, TA = 2.