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PDF MC33263 Data sheet ( Hoja de datos )
| Número de pieza | MC33263 | |
| Descripción | Ultra Low Noise 150 mA Low Dropout Voltage Regulator with ON/OFF Control | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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MC33263
Ultra Low Noise
150 mA Low Dropout
Voltage Regulator with
ON/OFF Control
Housed in a SOT23–L package, the MC33263 delivers up to
150 mA where it exhibits a typical 180 mV dropout. With an
incredible noise level of 25 mVRMS (over 100 Hz to 100 kHz, with a
10 nF bypass capacitor), the MC33263 represents the ideal choice for
sensitive circuits, especially in portable applications where noise
performance and space are premium. The MC33263 also excels in
response time and reacts in less than 25 ms when receiving an OFF to
ON signal (with no bypass capacitor).
Thanks to a novel concept, the MC33263 accepts output capacitors
without any restrictions regarding their Equivalent Series Resistance
(ESR) thus offering an obvious versatility for immediate implementation.
With a typical DC ripple rejection better than –90 dB (–70 dB @
1 kHz), it naturally shields the downstream electronics against choppy
power lines.
Additionally, thermal shutdown and short–circuit protection
provide the final product with a high degree of ruggedness.
Features:
• Very Low Quiescent Current 170 µA (ON, no load), 100 nA (OFF,
no load)
• Very Low Dropout Voltage, typical value is 137 mV at an output
current of 100 mA
• Very Low Noise with external bypass capacitor (10 nF),
typically 25 µVrms over 100 Hz to 100 kHz
• Internal Thermal Shutdown
• Extremely Tight Line Regulation typically –90 dB
• Ripple Rejection –70 dB @ 1 kHz
• Line Transient Response: 1 mV for DVin = 3 V
• Extremely Tight Load Regulation, typically 20 mV at DIout = 150 mA
• Multiple Output Voltages Available
• Logic Level ON/OFF Control (TTL–CMOS Compatible)
• ESR can vary from 0 to 3W
• Functionally and Pin Compatible with TK112xxA/B Series
Applications:
• All Portable Systems, Battery Powered Systems, Cellular
Telephones, Radio Control Systems, Toys and Low Voltage Systems
MC33263 Block Diagram
6
Input
1
Shutdown
ON/OFF
Thermal
Shutdown
3
Bypass
Band Gap
Reference
4
Output
http://onsemi.com
6
1
SOT–23L
NW SUFFIX
CASE 318J
MARKING
DIAGRAMS
6
xAYLW
1
x = Voltage Option Code
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
PIN CONNECTIONS
ON/OFF 1
GND 2
BYPASS 3
6 VIN
5 GND
4 VOUT
(Top View)
ORDERING INFORMATION
Device
Version
Shipping
MC33263NW–28R2 2.8 V 2500 Tape & Reel
MC33263NW–30R2 3.0 V 2500 Tape & Reel
MC33263NW–32R2 3.2 V 2500 Tape & Reel
MC33263NW–33R2 3.3 V 2500 Tape & Reel
MC33263NW–38R2 3.8 V 2500 Tape & Reel
MC33263NW–40R2 4.0 V 2500 Tape & Reel
MC33263NW–47R2 4.75 V 2500 Tape & Reel
MC33263NW–50R2 5.0 V 2500 Tape & Reel
All Devices Available in SOT–23L 6 Lead Package
2
GND
* Current Limit
* Antisaturation
* Protection
© Semiconductor Components Industries, LLC, 2000
April, 2000 – Rev. 2
5
GND
1
Publication Order Number:
MC33263/D
1 page  
MC33263
If TJmax is internally limited to 150°C, then the MC33263
can dissipate up to 595 mW @ 25°C.
The power dissipated by the MC33263 can be calculated
from the following formula:
+ ǀ @ ǁ ) ǀ * ǁ @Ptot Vin Ignd(Iout)
Vin Vout Iout
or
+ ) ) @Vinmax
Ptot Vout Iout
Ignd Iout
If a 150 mA output current is needed, the ground current
is extracted from the data–sheet curves: 6.5 mA @ 150 mA.
For a MC33263NW28R2 (2.8 V), the maximum input
voltage will then be 6.48 V, a rather comfortable margin.
Typical Application – The following figure portraits the
typical application for the MC33263 where both
input/output decoupling capacitors appear.
Input Output
Figure 2. Printed Circuit Board
Differential (Vin–Vout)
654
C3
1.0 mF
MC33263
123
On/Off
C1
10 nF
C2
1.0 mF
C3 MC33263
Input + + C2
C1
Rpull–up
Output
Figure 1. A Typical MC33263 Application with
Recommended Capacitor Values
As for any low noise designs, particular care has to be
taken when tackling Printed Circuit Board (PCB) layout.
The following figure gives an example of a layout where
stray inductances/capacitances are minimized.
ON/OFF
Figure 3. Copper Side Component Layout
This layout is the basis for an MC33263 performance
evaluation board where the BNC connectors give the user an
easy and quick evaluation mean.
http://onsemi.com
5
5 Page 
MC33263
TYPICAL PERFORMANCE CHARACTERISTICS
Dropout Voltage
250 250
85°C 10 mA
200 200
25°C 60 mA
150
–40°C
150
100 mA
100 100
50
0
10 60 100
IO (mA)
Figure 21. Dropout Voltage versus Iout
150
50 150 mA
0
–40 –20 0 20 40 60 80 100
TEMPERATURE (°C)
Figure 22. Dropout Voltage versus Temperature
Output Voltage
2.805
2.800
1 mA
2.795
2.790
2.785
60 mA
100 mA
2.780
150 mA
2.775
2.770
–40 –20
0 20 40 60
TEMPERATURE (°C)
80 100
Figure 23. Output Voltage versus Temperature
2.860
2.840
2.820
2.800
2.780
2.760
2.740
0
25°C –40°C
85°C
20 40 60 80 100 120 140
OUTPUT CURRENT (mA)
Figure 24. Output Voltage versus Iout
160
Ripple Rejection Performances
0
–10 Vin = 3.8 V
–20 Vout = 2.8 V
–30
CO = 1.0 mF
Iout = 60 mA
–40 Tamb = 25°C
–50
–60
–70
–80
–90
–100
100
1000
10,000
100,000
FREQUENCY (Hz)
Figure 25. Ripple Rejection versus Frequency with
10 nF Bypass Capacitor
0
Vin = 3.8 V
–20 Vout = 2.8 V
CO = 1.0 mF
–40
Iout = 60 mA
Tamb = 25°C
–60
–80
–100
–120
10 100 1000 10,000 100,000 1,000,000
FREQUENCY (Hz)
Figure 26. Ripple Rejection versus Frequency
without Bypass Capacitor
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11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MC33263.PDF ] | |
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