TOKO TK11900MTL Datasheet
TK11900
0
1
S
ADJUSTABLE LOW DROPOUT REGULATOR
FEATURES
■■
■ Low Supply Current
■■
■■
■ Low Power Shutdown Mode
■■
■■
■ Low Noise Output
■■
■■
■ Low Dropout Voltage
■■
■■
■ Extremely High Stability
■■
■■
■ High Speed On/Off Transient (50 µs typ.)
■■
■■
■ Miniature Package (SOT-23L)
■■
DESCRIPTION
The TK11900 is a low dropout voltage regulator with external
voltage adjustment. The output can be set between 1.5 V
and 15 V by an external pair of resistors in a divider
configuration. The device has a bypass pin for an external
capacitor to reduce output noise to a typical 50 µV(rms). In
addition, a control pin is provided that is active low (a low
level turns on the output). In the “off” mode (control pin high)
the device draws only 65 µA of quiescent current.
APPLICATIONS
■■
■ Portable Instrumentation
■■
■■
■ Cordless Telephones
■■
■■
■ Pagers
■■
■■
■ Toys
■■
■■
■ Cellular Telephones
■■
■■
■ Test Equipment
■■
TK11900
CONTROL
NOISE
BYPASS
V
IN
GND
The TK11900 is available in a miniature SOT-23L surface
mount package.
ORDERING INFORMATION
TK11900M
Tape/Reel Code
TAPE/REEL CODE
TL: Tape Left
V
CONTROL
FEEDBACK
V
OUT
BLOCK DIAGRAM
IN
NOISE
THERMAL
PROTECTION
GND
SHUT
DOWN
BANDGAP
REFERENCE
BYPASS
V
OUT
FEEDBACK
November 2000 TOKO, Inc. Page 1
TK11900
ABSOLUTE MAXIMUM RATINGS
Supply Voltage......................................................... 17 V
Operating Voltage Range ............................... 1.8 to 16 V
Power Dissipation (Note 1) ................................. 400 mW
Storage Temperature Range .....................-55 to +150 °C
TK11900M ELECTRICAL CHARACTERISTICS
Test conditions: V
LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU
IN
= V
OUT(TYP)
+ 1 V, TA = 25 °C, unless otherwise specified.
Operating Temperature Range.....................-30 to +80 °C
Junction Temperature .......................................... 150 °C
Lead Soldering Temperature (10 s)....................... 235 °C
V=
V
I
Q
I
YBTS
V
TUO
V
PORD
I
TUO
tnerruCtnecseiuQ
tnerruCybdnatSFFOtuptuO56041Aµ
egatloVtuptuO)2etoN(5.151V
egatloVtuoporDI
tnerruCtuptuO 001Am
NI
V
V=
NI
TUO
geReniLnoitalugeReniLV
geRdaoLnoitalugeRdaoLAm1 ≤ I
∆V
TUO
/∆T
tneiciffeoCerutarepmeTV
RRnoitcejeRelppiRC
V
ON
V
fer
egatloVesioNtuptuO
egatloVecnerefeR
NI
L
C
N
T
A
T
A
V=
zH01 ≤ f ≤ C,zHk001
)PYT(TUO
)PYT(TUO
Am03=061053Vm
V1+ ≤VNI≤V
)PYT(TUO
≤ Am0802001Vm
TUO
)PYT(TUO
Fµ10.0=
C°52=522.1052.1572.1V
I,V1+
TUO
I,V1-
TUO
Am0=041003Aµ
Am0=083009Aµ
V01+505Vm
)PYT(TUO
V1-51.0±C°/Vm
zH004=f,Fµ01=86Bd
L
,Fµ01=
C°08ot03-=012.1052.1092.1V
SNOITACIFICEPSLANIMRETLORTNOC
I
TNOC
V
V
T
Note 1: Power dissipation is 400 mW when mounted as recommended. Derate at 3.2 mW/°C for operation above 25°C.
Note 2: The output voltage can be set from 1.5 to 15 V by two external resistors. “Refer to Definition of Terms.”
)NO(TNOC
)FFO(TNOC
R
emiTesiRtuptuO
tnerruClanimreTlortnoC
V
)NO(egatloVlortnoCNOtuptuO6.0V
)FFO(egatloVlortnoCFFOtuptuO2.2V
I
TUO
)NOotFFO(
C
N
V
V5=52001Aµ
TNOC
V61=54051Aµ
TNOC
C,Am03=
L
,Fµ1.0=
Fµ1.0=
05smrVµ
05sµ
Page 2 November 2000 TOKO, Inc.
Note: CL is a tantalum capacitor
V
(V)
I
GND
(mA)
10
GROUND CURRENT
VS.
OUTPUT CURRENT
I
OUT
(mA)
0 50 100
0
5
TYPICAL PERFORMANCE CHARACTERISTICS
TEST CIRCUIT
I
IN
V
IN
+
1 µF
NOISE BYPASS
C
I
CONT
V
CONT
V
= 5 V, TA = 25 °C, unless otherwise specified.
OUT
N
0.01 µF
CONT
R
1
FEEDBACK
R
2
+
V
OUT
C
L
I
10 µF
OUT
Note: V
10 k - R2 - 60 k
= 1.25 [(R1 + R2) / R2]
OUT
Connect Pin 5 to ground
TK11900
VS.
5.1
OUTPUT VOLTAGE
OUTPUT CURRENT
VS.
5.1
OUTPUT VOLTAGE
INPUT VOLTAGE
VS.
500
QUIESCENT CURRENT
INPUT VOLTAGE
5.0
(V)
OUT
V
5.0
(V)
OUT
V
4.9
4.8
250
(mA)
Q
I
4.7
4.9
0 50 100
I
(mA)
OUT
OUTPUT VOLTAGE CHARACTERISTICS
VS.
INPUT VOLTAGE
4.6
0 10 20
VIN (V)
REFERENCE VOLTAGE
VS.
(FEEDBACK PIN)
TEMPERATURE
0
0 10 20
VIN (V)
5.5
1.28
I
= 0 mA
OUT
(V)
5.0
OUT
V
30 mA
60 mA
4.5
4.5 5.0 5.5
VIN (V)
1.27
1.26
ref
1.25
1.24
1.23
-50 0 50 100
TA (°C)
November 2000 TOKO, Inc. Page 3
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