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PDF TC1189 Data sheet ( Hoja de datos )
| Número de pieza | TC1189 | |
| Descripción | 120 mA Linear Regulators | |
| Fabricantes | Microchip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TC1189 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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TC1188/TC1189
MAX8863/64 Pin Compatible, Low Dropout,
120 mA Linear Regulators
Features
• Input Voltage Range: 2.7 V to 6.0 V
• 120 mA Output Current
• Low Supply Current: 50 µA, (typical)
• Low Dropout Voltage: 110 mV, (typical at 100 mA)
• Fast Turn-On from Shutdown: 140 µsec (typical)
• Low Output Noise
• Over-Current and Over-Temperature Protection
• Low Power Shutdown Mode
• Auto Discharge of Output Capacitor (TC1189)
Applications
• Battery Powered Systems
• Portable Computers
• Medical Instruments
• Cellular, Cordless Phones
• PDAs
• Pagers
Package Type
5-Pin SOT-23A
GND
5
VOUT
4
TC1188
TC1189
1 23
SHDN GND VIN
NOTE: 5-Pin SOT-23A is equivalent to the EIAJ (SC-74A)
General Description
The TC1188 and TC1189 are fixed output, low dropout
linear regulators that operate from a 2.7V to 6.0V input
voltage source. The output is capable of delivering up
to 120 mA while consuming only 50 µA of quiescent
current. The low dropout voltage, 120 mV, make the
TC1188 and TC1189 good choices for battery powered
applications. Integrated over-current and over-temper-
ature protection features provide for a fault tolerant
solution.
The TC1189 includes an output voltage auto discharge
feature. When shutdown, the TC1189 will automatically
discharge the output voltage using an internal N-Chan-
nel MOSFET switch.
Fixed output voltage options for the TC1188/TC1189
are: 1.80V, 2.80V, 2.84V and 3.15V. Both the TC1188
and TC1189 are available in SOT23-5 packages.
Typical Application Circuit
+
–
Battery
CIN
1 µF
VIN VOUT
TC1188
TC1189
SHDN
GND GND
Output
Voltage
COUT
1 µF
2002-2012 Microchip Technology Inc.
DS21364C-page 1
1 page  
TC1188/TC1189
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
VOUT = 2.84V
RLOAD = 50Ω
100mV p-p
COUT = 1μF
10 100 1K 10K 100K 1M 10M
FREQUENCY (kHz)
FIGURE 2-7:
Power Supply Rejection
Ratio vs. Frequency. (TC1188)
CH1 GND
VOUT = 0.5V/DIV
T = 25°
CIN = 1μF
CL =1μF
RL = ∞
SHDN
SHDN = 0V
CH2 GND
FIGURE 2-8:
Response.
200μsec/Div
TC1189 Shutdown Transient
XSHDN = 3V
T
Turn On
Time = 150μS
VOUT = 2.7V
CH1 GND
No Overshoot
CIN = 1μF
COUT =1μF
RL = 100Ω
VIN = 3.5V
CH2
XSHDN = 0V
CH1
CIN = COUT = 1μF, RL = 470Ω, XSHDN = 3.5V
VIN = 4.5V
T
CH1 GND
VIN = 3.5V CH1
VOUTAC 20μV/DIV
CH2 GND T
CH2
FIGURE 2-10:
100μsec/Div
TC1189 Line Response.
SHDN 0V
3V
2.8V
VOUT
0V
VIN = 3.6V
ILOAD = 30mA
CIN = 1μF
CLOAD = 1μF
TIME (100μs/Div)
FIGURE 2-11:
Wake-Up Response Time.
CH2 GND T
FIGURE 2-9:
Response.
VOUT = 0V
200μsec/Div
TC1189 Shutdown Transient
2002-2012 Microchip Technology Inc.
DS21364C-page 5
5 Page 
REVISION HISTORY
Revision C (November 2012)
Added a note to the package outline drawing.
TC1188/TC1189
2002-2012 Microchip Technology Inc.
DS21364C-page 11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet TC1189.PDF ] | |
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