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TOKO

TK11240B Datasheet Preview

TK11240B Datasheet

VOLTAGE REGULATOR

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TK112xxB
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s High Voltage Precision at ± 2.0%
s Active High On/Off Control
s Very Low Dropout Voltage 80 mV at 30 mA
s Very Low Noise
s Very Small SOT-23L or SOT-89-5 Surface Mount
Packages
s Internal Thermal Shutdown
s Short Circuit Protection
DESCRIPTION
The TK112xxB is a low dropout linear regulator with a built-
in electronic switch. 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. An
external capacitor can be connected to the noise bypass
pin to lower the output noise level to 30 µVrms.
An internal PNP pass transistor is used to achieve a low
dropout voltage of 80 mV (typ.) at 30 mA load current. The
TK112xxB has a very low quiescent current of 170 µA at no
load and 1 mA with a 30 mA load. The standby current is
typically 100 nA. The internal thermal shutdown circuitry
limits the junction temperature to below 150 °C. The load
current is internally monitored and the device will shutdown
in the presence of a short circuit or overcurrent condition at
the output.
ORDERING INFORMATION
TK112 B C
Voltage Code
Tape/Reel Code
Package Code
APPLICATIONS
s Battery Powered Systems
s Cellular Telephones
s Pagers
s Personal Communications Equipment
s Portable Instrumentation
s Portable Consumer Equipment
s Radio Control Systems
s Toys
s Low Voltage Systems
The TK112xxB is available in either 6 pin SOT-23L or 5 pin
SOT-89-5 surface mount packages.
TK112XXB
CONTROL 1
6 VIN
20P
GND 2
5 GND
NOISE
BYPASS
3
4 VOUT
NOISE
BYPASS 1
GND 2
CONTROL 3
6 VOUT
5 GND
4 VIN
BLOCK DIAGRAM
VOLTAGE CODE
13 = 1.3 V 33 = 3.3 V
14 = 1.4 V 34 = 3.4 V
15 = 1.5 V 35 = 3.5 V
16 = 1.6 V 36 = 3.6 V
17 = 1.7 V 37 = 3.7 V
18 = 1.8 V 38 = 3.8 V
19 = 1.9 V 39 = 3.9 V
20 = 2.0 V 40 = 4.0 V
21 = 2.1 V 41 = 4.1 V
22 = 2.2 V 42 = 4.2 V
23 = 2.3 V 43 = 4.3 V
24 = 2.4 V 44 = 4.4 V
25 = 2.5 V 45 = 4.5 V
26 = 2.6 V 46 = 4.6 V
27 = 2.7 V 47 = 4.7 V
28 = 2.8 V 48 = 4.8 V
29 = 2.9 V 49 = 4.9 V
30 = 3.0 V 50 = 5.0 V
31 = 3.1 V 55 = 5.5 V
32 = 3.2 V 80 = 8.0 V
NOTE:
1.3 V to 1.9 V available in
the SOT-23L package only
PACKAGE CODE
M: SOT-23L
U: SOT-89-5
TAPE/REEL CODE
L : Tape Left
(SOT-23L)
B : Tape Bottom
(SOT-89-5)
VIN
CONTROL S S
S
S SS
THERMAL
PROTECTION
S+
S
S
S
S
SS
BANDGAP
REFERENCE
SS
S
+
NOISE BYPASS
S VOUT
S
S GND
May, 1997 TOKO, Inc.
Page 1




TOKO

TK11240B Datasheet Preview

TK11240B Datasheet

VOLTAGE REGULATOR

No Preview Available !

TK112xx B
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ......................................................... 16 V
Output Current .................................................... 260 mA
Power Dissipation ............................................... (Note 1)
SOT-23L ......................................................... 600 mW
SOT-89-5 ....................................................... 900 mW
Reverse Bias ............................................................ 10 V
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range ...................-30 to +80 °C
Voltage Range ............................................ 1.8 to 14.5 V
Junction Temperature ........................................... 150 °C
TK112XXB ELECTRICAL CHARACTERISTICS
Test conditions: TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
IQ
ISTBY
VO
Line Reg
Load Reg
VDROP
IOUT
RR
Quiescent Current
Standby Current
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
Continuous Output Current
Ripple Rejection
IOUT = 0 mA, Except ICONT
VIN = 8 V, at output off
IOUT = 30 mA
VO 5.5 V (Note 2)
IOUT = 1 mA 60 mA (Note 3)
IOUT = 1 mA 100 mA (Note 3)
IOUT = 60 mA
IOUT when VOUT drops 0.3 V
from VO (typ) (Note 3)
f = 400 Hz, CL= 10 µF, CN = 0.1 µF
VIN = VOUT + 1.5 V, IOUT = 30 mA,
(Note 4)
170 250
0.1
See table 1
3.0 20
6 30
18 90
0.12 0.24
150
µA
µA
V
mV
mV
mV
V
mA
55 dB
VNO
Output Noise Voltage
10 Hz f 80 KHz,
VCN = VOUT + 1.5 V, IOUT = 60 mA,
CL = 10 µF, CN = 0.1 µF, (Notes 4,5)
30
µVrms
IOUT (PULSE) Pulse Output Current
5 ms pulse, 12.5% duty cycle
VREF
Noise Bypass Terminal Voltage
Control Terminal Specification
200 mA
1.25 V
ICONT
VCONT
VO/TA
Control Current
Control Voltage
Output on, VCONT = 1.8 V
Output on
Output off
Output Voltage Temperature IOUT = 10 mA
Coefficient
12
1.8
0.09
35 µA
V
0.6 V
mV/°C
Note 1: When mounted as recommended. Derate at 4.8 mW/°C for SOT-23L and 6.4 mW/°C for SOT-89-5 packages when ambient
temperatures are over 25 °C.
Note 2: For Line Regulation VO > 5.6 V, Typ and Max values are 15 and 40 mV.
Note 3: Refer to Definition of Terms.
Note 4: Ripple Rejection and noise voltage are affected by the value and characteristics of the capacitor used.
Note 5: Output noise voltage can be reduced by connecting a capacitor to a noise pass terminal.
Gen. Note: Parameters with min. or max. values are 100% tested at TA = 25 °C.
Page 2
May, 1997 TOKO, Inc.


Part Number TK11240B
Description VOLTAGE REGULATOR
Maker TOKO
Total Page 16 Pages
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