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PDF TK74013 Data sheet ( Hoja de datos )
| Número de pieza | TK74013 | |
| Descripción | DUAL LOW DROPOUT VOLTAGE REGULATOR | |
| Fabricantes | TOKO | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TK74013 (archivo pdf) en la parte inferior de esta página. Total 29 Páginas | ||
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TK740xxL
DUAL LOW DROPOUT VOLTAGE REGULATOR
FEATURES
n 2 Channel LDO in one Package
n Outputs can be set by External Resistors
n High Precision Output Voltage (± 2.0 % or ± 60 mV)
n Independent Active High On/Off Control for each LDO
n Very Low Dropout Voltage (VDROPA = 90 mV at 100 mA,
VDROPB = 80 mV at 50 mA)
n StablewithCeramicCapacitors
n Excellent Ripple Rejection Ratio (84 dB @ 400 Hz)
n 1 µA at Shutdown
n Peak Output Current is 370 mA
n SOT23L-8 Package
n Wide Operating Voltage Range (1.8 V ~ 14.5 V)
n ReverseBiasandOvercurrentProtection
n Built-in Thermal Shutdown
DESCRIPTION
The TK740xx is a Dual Ultra Low-Drop-Out regulator with a
built-in electronic switch. The A-Side delivers up to 200 mA
output current and the B-Side delivers up to 120 mA output
current over the full temperature range. 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. External capacitors can be connected between
the FBA and VOUTA and FBB and VOUTB pins to lower the output
noise level.
Internal PNP pass transistors are used to achieve a low
dropout voltage of 90 mV (typ.) at 100 mA load current side
A and 80 mV (typ.) at 50 mA load current side B. The
TK740xx has very low quiescent current. 45 µA at no load
and 0.4 mA with a 50 mA load. The internal thermal shut
down circuitry limits the junction temperature to 150 °C. The
ORDERING INFORMATION
TK740 CL-
Package Code
Temp. Code
B Side Voltage Code
A Side Voltage Code
Tape/Reel Code
VOLTAGE CODES:
Refer to Table 1
PACKAGE CODE:
S: SOT23L-8
TAPE/REEL CODE:
L: Tape Left
Reel Size = 1300 pcs.
TEMP. CODE:
C: -30 to 80°C
I: -40 to 85°C
APPLICATIONS
n Battery Powered Systems
n Measurement Systems
n Mobile Communications Systems
n Cellular Phones
n Cordless Phones
n PDAs
n Toy Motor Drivers
load current is internally monitored and the device will shut
down in the presence of a short circuit or overcurrent
condition at the output.
The TK740xx circuit features very high stability. An output
capacitor of 0.22 mF provides stable operation for VOUT ³ 2.0
V. Any type of capacitor can be used; however, the larger
this capacitor is, the better the overall characteristics are.
The ripple rejection ratio is 84 dB at 400 Hz, and 80 dB at
1 kHz.
The TK740xx is available in the SOT23L-8 surface mount
package.
TK740xxL
FBA
VOUTA
VOUTB
FBB
8 ON/OFF CONTROL A
VIN
GND
ON/OFF CONTROL B
VOUT A
FBA
BLOCK DIAGRAM
VIN
BANDGAP
REFERENCE
GND
ON / OFF
CONTROL
AB
RIN = 300 kΩ
THERMAL &
OVER CURRENT
PROTECTION
BANDGAP
REFERENCE
GND
VOUT B
FBB
January 22, 2002 TOKO, Inc.
Page 1
1 page  
TK740xxL
TK740xx ELECTRICAL CHARACTERISTICS (I RANK) (CONT.)
Test conditions: TA = 25 °C, Bold typeface applies over the -40°C to 85°C Ambient Temperature Range. Operational
Voltage Range is (2.1 V £ VOP £ 14 V). Unless otherwise noted. VIN = VOUT(TYP) + 1 V, IOUT = 1 mA
SYMBOL
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
Load Reg Load Regulation (Note 1)
IOUT = 5 mA to 100 mA
17 40
50
mV
VDROP
Dropout Voltage
IOUT = 50 mA
IOUT = 100 mA
80 125
175
135 220
280
mV
mV
IOUT(MAX)
Maximum Output Current
VOUT = VOUT(TYP) x 0.9 (Note 2)
190 380
150
mA
RR Ripple Rejection
f = 400 Hz, CL = 1.0 mF, CN = 0.01
mF, VNOISE = 200 mVRMS, VIN =
VOUT(TYP) + 1.5 V, IOUT = 10 mA
f = 1 kHz, CL = 1.0 mF, CN = 0.01
mF, VNOISE = 200 mVRMS, VIN =
VOUT(TYP) + 1.5 V, IOUT = 10 mA
84
80
dB
dB
Note 1: This value depends on the output voltage. This is a reference value for a 3V output device. The details of each device are described
in the individual specifications.
Note 2: The output current is limited by the power dissipation of the total of both sides.
Note 3: Pull down resistor for control terminal is not built in.
General Note: Parameters with only typical values are just reference. (Not guaranteed)
General Note: Limits are guaranteed by production testing or correction techniques using Statistical Quality Control (SQC) methods. Unless
otherwise noted. VIN = VOUT(TYP) + 1V; IOUT= 1 mA (Tj = 25°C) The operation of -40° to 85°C is guaranteed in the design by a usual
inspection.
General Note: Exceeding the “Absolute Maximum Rating” may damage the device.
January 22, 2002 TOKO, Inc.
Page 5
5 Page 
TK740xxL
TYPICAL PERFORMANCE CHARACTERISTICS (CONT)
SIDE A
SIDE B
AMBIENT TEMPERATURE BEHAVIOR
GROUND PIN CURRENT vs.
TEMPERATURE
10
9
8
IOUT = 200 mA
7
6
5
4
3 IOUT = 100 mA
2
1
0
-40 -20
0 20 40 60 80 100
TA(°C)
GROUND PIN CURRENT vs.
TEMPERATURE
10
9
8
7
6
5
4 IOUT = 100 mA
3
2
1
0
-40 -20
0 20 40 60 80 100
TA(°C)
DROPOUT VOLTAGE vs.
TEMPERATURE
300
250
IOUT = 200 mA
200
150
100
50
0
-40 -20
IOUT = 100 mA
0 20 40 60 80 100
TA(°C)
DROPOUT VOLTAGE vs.
TEMPERATURE
300
250
200
IOUT = 100 mA
150
100
50
0
-40 -20
IOUT = 50 mA
0 20 40 60 80 100
TA(°C)
MAXIMUM OUTPUT CURRENT
vs. TEMPERATURE
500
400
300
200
100
0
-40 -20
0 20 40 60 80 100
TA(°C)
January 22, 2002 TOKO, Inc.
MAXIMUM OUTPUT CURRENT
vs. TEMPERATURE
500
400
300
200
100
0
-40 -20
0 20 40 60 80 100
TA(°C)
Page 11
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet TK74013.PDF ] | |
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