datasheet4u.com

900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1174 Datasheet

300mA CMOS LDO with Shutdown and VREF Bypass

No Preview Available !

TC1174 pdf
TC1174
300mA CMOS LDO with Shutdown and VREF Bypass
Features
• Extremely Low Supply Current (50µA, Typ.)
• Very Low Dropout Voltage
• 300mA Output Current
• Adjustable Output Voltages
• Power Saving Shutdown Mode
• Bypass Input for Ultra Quiet Operation
• Over Current and Over Temperature Protection
• Space-Saving MSOP Package Option
Applications
• Battery Operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular/GSM/PHS Phones
• Linear Post-Regulators for SMPS
• Pagers
Device Selection Table
Part Number
Output
Voltage
(V)
Package
Junction
Temp. Range
TC1174VOA Adjustable 8-Pin SOIC -40°C to +125°C
TC1174VUA Adjustable 8-Pin MSOP -40°C to +125°C
Package Type
8-Pin MSOP
VOUT 1
8 VIN
GND 2 TC1174VUA 7 NC
NC 3
6 SHDN
ADJ 4
5 Bypass
8-Pin SOIC
VOUT 1
8 VIN
GND 2 TC1174VOA 7 NC
NC 3
6 SHDN
ADJ 4
5 Bypass
General Description
The TC1174 is an adjustable output CMOS low dropout
regulator. Total supply current is typically 50µA at full
load (20 to 60 times lower than in bipolar regulators).
TC1174 key features include ultra low noise operation
(plus optional Bypass input); very low dropout voltage
(typically 270mV at full load) and internal feed-forward
compensation for fast response to step changes in
load. Supply current is reduced to 0.05µA (typical) and
VOUT falls to zero when the shutdown input is low.
The TC1174 incorporates both over temperature and
over current protection. The TC1174 is stable with an
output capacitor of only 1µF and has a maximum
output current of 300mA.
Typical Application
VOUT
+
C1
1µF
R1
470K
R2
470K
1 VOUT
VIN 8
VIN
2
GND
7
NC
TC1174
3 NC
6
SHDN
4 ADJ
5
Bypass
[ ]VOUT = VREF x RR12 + 1
NC
Shutdown
Control
(from Power
Control Logic)
CBYPASS
470pF
(Optional)
© 2002 Microchip Technology Inc.
DS21363B-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1174 Datasheet

300mA CMOS LDO with Shutdown and VREF Bypass

No Preview Available !

TC1174 pdf
TC1174
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Input Voltage .........................................................6.5V
Output Voltage.................. (VSS – 0.3V) to (VIN + 0.3V)
Power Dissipation................Internally Limited (Note 5)
Maximum Voltage on Any Pin ........ VIN +0.3V to -0.3V
Operating Temperature Range...... -40°C < TJ < 125°C
Storage Temperature.......................... -65°C to +150°C
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC1174 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: VIN = VOUT + 1V, IL = 0.1µA, CL = 3.3µF, SHDN > VIH, TA = 25°C, unless otherwise noted. Boldface
type specifications apply for junction temperatures of -40°C to +125°C.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
VIN
IOUTMAX
VREF
VOUT/T
VOUT/VIN
VOUT/VOUT
VIN-VOUT
Input Operating Voltage
Maximum Output Current
Reference Voltage
VOUT Temperature Coefficient
Line Regulation
Load Regulation
Dropout Voltage
ISS1
ISS2
PSRR
IOUTSC
VOUT/PD
eN
Supply Current
Shutdown Supply Current
Power Supply Rejection Ratio
Output Short Circuit Current
Thermal Regulation
Output Noise
2.7
300
1.165
1.20
40
0.05
1.1
20
80
270
50
0.05
60
550
0.04
260
6.0
1.235
0.35
2.0
30
160
480
90
0.5
650
V Note 6
mA
V
ppm/°C Note 1
% (VR + 1V) VIN 6V
% IL = 0.1mA to IOUTMAX (Note 2)
mV IL = 0.1mA
IL = 100mA
IL = 300mA (Note 3)
µA SHDN = VIH
µA SHDN = 0V
dB
mA
V/W
FRE – 1kHz
VOUT = 0V
Note 4
nV/Hz F = 10kHz, IL = IOUTMAX
470pF from Bypass to GND
SHDN Input
VIH
VIL
ADJ Input
SHDN Input High Threshold
SHDN Input Low Threshold
45 — — %VIN
— — 15 %VIN
IADJ
Adjustable Input Leakage Current
50
— pA
1: TC VOUT = (VOUTMAX – VOUTMIN) x 106
VOUT x T
2: Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range
from 0.1mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal
regulation specification.
3: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at a
1V differential.
4: Thermal Regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or
line regulation effects. Specifications are for a current pulse equal to ILMAX at VIN = 6V for T = 10 msec.
5: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the
thermal resistance from junction-to-air (i.e., TA, TJ, θJA). Exceeding the maximum allowable power dissipation causes the device to initiate
thermal shutdown. Please see Section 4.0 Thermal Considerations for more details.
6: The minimum VIN has to justify the conditions: VIN VR + VDROPOUT and VIN 2.7V for IL = 0.1mA to IOUTMAX.
DS21363B-page 2
© 2002 Microchip Technology Inc.


Part Number TC1174
Description 300mA CMOS LDO with Shutdown and VREF Bypass
Maker Microchip
Total Page 12 Pages
PDF Download
TC1174 pdf
TC1174 Datasheet PDF
[partsNo] view html
View PDF for Mobile








Similar Datasheet

1 TC1173 300mA CMOS LDO with Shutdown ERROR output and Bypass Microchip
Microchip
TC1173 pdf
2 TC1173 300mA CMOS LDO with Shutdown ERROR Output and Bypass TelCom
TelCom
TC1173 pdf
3 TC1174 300mA CMOS LDO with Shutdown and VREF Bypass Microchip
Microchip
TC1174 pdf





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy