TK716XX Datasheet, PDF (1/20 Pages) TOKO, Inc – LOW DROPOUT VOLTAGE REGULATOR

TK716xx
LOW DROPOUT VOLTAGE REGULATOR
FEATURES
s Available in ± 2.0 % or ± 1.0 % Output Tolerance
s Active High On/Off Control
s Very Low Quiescent Current
s Very Low Dropout Voltage
s Reverse Bias Protection
s Miniature Package (SOT23-5)
s Short Circuit Switch
s High Ripple Rejection
s Very High Output Impedance (Output Off)
s Very Low Noise
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
DESCRIPTION
The TK716xx is a low dropout linear regulator housed in a
small SOT23-5 package, rated at 500 mW. The phase
compensation in the IC has been optimized to allow the
use of ceramic or tantalum output capacitors. The device
is in the “on” state when the control pin is pulled to a logic
high level. An internal PNP pass transistor is used to
achieve a low dropout voltage of 90 mV (typ.) at 50 mA
load current. This device offers high precision output
voltage of ± 2.0 % or ± 1.0 %. The low quiescent current
and dropout voltage make this part ideal for battery pow-
ered applications. This part incorporates an output discon-
nect feature to reduce the reverse bias current in the “off”
state to less than 50 nA.
ORDERING INFORMATION
TK716
TK716
TK716
SCL
SIL
SCL H
Voltage Code
Capacitor Code
Package Code
Tolerance Code
Tape/Reel Code
Temp. Code
VOLTAGE CODE*
13 = 1.3 V
27 = 2.7 V
14 = 1.4 V
28 = 2.8 V
15 = 1.5 V
29 = 2.9 V
16 = 1.6 V
30 = 3.0 V
17 = 1.7 V
31 = 3.1 V
18 = 1.8 V
32 = 3.2 V
19 = 1.9 V
33 = 3.3 V
20 = 2.0 V
34 = 3.4 V
21 = 2.1 V
35 = 3.5 V
22 = 2.2 V
36 = 3.6 V
23 = 2.3 V
37 = 3.7 V
24 = 2.4 V
38 = 3.8 V
25 = 2.5 V
39 = 3.9 V
26 = 2.6 V
40 = 4.0 V
*Check Table 4
for availability.
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
51 = 5.1 V
52 = 5.2 V
53 = 5.3 V
54 = 5.4 V
TAPE/REEL CODE
L: Tape Left
TEMPERATURE CODE
C: Standard Temp. Range
I: Extended Temp. Range
PACKAGE CODE
S: SOT23-5
TOLERANCE CODE
H: 1 % Output Voltage Tolerance
(Not available in I temp code)
CAPACITOR CODE
None: Ceramic Capacitor
A: Tantalum Capacitor
The internal reverse bias protection eliminates the require-
ment for a reverse voltage protection diode, saving cost
and board space. The high 60 dB ripple rejection (400 Hz)
and low noise provide enhanced performance for critical
applications. An external capacitor can be connected to
the noise bypass pin to lower the output noise level to 30
µVrms.
TK716xx
VIN
20P
GND
CONTROL
VOUT
NOISE
BYPASS
VIN
CONTROL
BLOCK DIAGRAM
CONTROL
CIRCUIT
CONSTANT
CURRENT
SOURCE
BANDGAP
REFERENCE
THERMAL AND
OVERCURRENT
PROTECTION
VOUT
-
+
DISCONNECT
CIRCUIT
GND
NOISE
BYPASS
December 1999 TOKO, Inc.
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