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參數資料
| 型號： | TK71744 |
| 廠商： | TOKO Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | LOW DROPOUT VOLTAGE REGULATOR |
| 中文描述： | 低壓差穩壓器 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 152K |
| 代理商： | TK71744 |
October 2001 TOKO, Inc.
Page 1
TK717xxS
Very Good Stability (CL = 0.22 F is Stable For
Any Type Capacitor withV
OUT
Built-in Shunt Circuit of Output to GND. The Stored
Energy of the Output Capacitor is Discharged
Quickly
Wide Operating Voltage Range (1.8 V ~ 14 V)
Very Low Dropout Voltage (V
DROP
= 103 mV at
100 mA)
Peak Output Current is 370 mA (0.3 V DROP Point)
Very Low Quiescent Current (I
Q
= 72 uA at I
OUT
= 0 mA)
Good Ripple Rejection Ratio (80 dB at 1 kHz)
High Precision Output Voltage (± 1.5 % or ± 50 mV)
Suitable for Very Low Noise Applications
Built-in Active High On/Off Control (0.1 A Max
Standby Current)
Built-in Short Circuit Protection
Built-in Thermal Shutdown
Very Small Surface Mount Package (SOT23-5)
1.8 V)
BLOCK DIAGRAM
TK717xxS
LOW DROPOUT VOLTAGE REGULATOR
FEATURES
APPLICATIONS
Battery Powered Systems
Measurement Systems
Mobile Communications Systems
Cordless Phone, PHS, GSM, CDMA
Industrial Equipment
Personal Computers, Barcode Readers
DESCRIPTION
TK717xxS 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. In the OFF
state, the output impedance becomes very low, quickly
discharging the output capacitor. An external capacitor can
be connected to the noise bypass pin to lower the output
noise level to 30 ~ 50 V
RMS
. An internal PNP pass transistor
is included to achieve a low dropout voltage of 103 mV at
100 mA load current. The TK717xx has an exceptionally
low quiescent current of 72 A at no load and 0.8 mA with
a 50 mA load. The standby current is typically 100 pA. The
circuit features very good stability. The ripple rejection is 90
dB at 400 Hz and 80 dB at 1 kHz. Stable operation is
achieved with an output capacitor as low as 0.22 F; a
capacitor of any type may be used. (However, the larger the
output capacitor is, the better the overall characteristics will
be.)
The TK717xxS is available in a very small SOT23-5 surface
mount package.
CONTROL
GND
VIN
+
-
BANDGAP
REFERENCE
THERMAL &
OVER CURRENT
PROTECTION
NOISE
BYPASS
CONTROL CIRCUIT
CONSTANT
CURRENT
SOURCE
VOUT
AUTO
DISCHARGE
CIRCUIT
GND
VIN
NOISE
BYPASS
VOUT
CONTROL
TK717
S L
Voltage Code
ORDERING INFORMATION
Package Code
PACKAGE CODE
S: SOT23-5
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
Operating Temp. Range
Tape/Reel Code
OPERATING TEMP. RANGE
C: -30 ~ 80°C
TAPE/REEL CODE
L: Tape Left
01S
相關PDF資料 |
PDF描述 |
|---|---|
| TK71744S | LOW DROPOUT VOLTAGE REGULATOR |
| TK71744SCL | LOW DROPOUT VOLTAGE REGULATOR |
| TK71745 | LOW DROPOUT VOLTAGE REGULATOR |
| TK71745S | LOW DROPOUT VOLTAGE REGULATOR |
| TK71745SCL | LOW DROPOUT VOLTAGE REGULATOR |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TK71744S | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT VOLTAGE REGULATOR |
| TK71744SCL | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT VOLTAGE REGULATOR |
| TK71744SCL/44 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT VOLTAGE REGULATOR |
| TK71745 | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT VOLTAGE REGULATOR |
| TK71745S | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:LOW DROPOUT VOLTAGE REGULATOR |
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