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MC33761SNT1-028

P1-P3P4-P6P7-P9P10-P12P13-P13
© Semiconductor Components Industries, LLC, 2006
July, 2006 − Rev. 8
1 Publication Order Number:
MC33761/D
MC33761
Ultra Low−Noise Low
Dropout Voltage Regulator
with 1.0 V ON/OFF Control
The MC33761 is an Low DropOut (LDO) regulator featuring
excellent noise performances. Thanks to its innovative design, the
circuit reaches an impressive 40 mVRMS noise level without an
external bypass capacitor. Housed in a small SOT−23 5 leads−like
package, it represents the ideal designer’s choice when space and
noise are at premium. The absence of external bandgap capacitor
accelerates the response time to a wake−up signal and keeps it within
40 ms (in repetitive mode), making the MC33761 as a natural
candidate for portable applications.
The MC33761 also hosts a novel architecture which prevents
excessive undershoots in the presence of fast transient bursts, as in any
bursting systems.
Finally, with a static line regulation better than −75 dB, it naturally
shields the downstream electronics against choppy lines.
Features
• Ultra−Low Noise: 150 nV/√Hz @ 100 Hz, 40 mVRMS
100 Hz−100 kHz Typical, I
out
= 60 mA, Co = 1.0 mF
• Fast Response Time from OFF to ON: 40 ms Typical at a 200 Hz
Repetition Rate
• Ready for 1.0 V Platforms: ON with a 900 mV High Level
• Nominal Output Current of 80 mA with a 100 mA Peak Capability
• Typical Dropout of 90 mV @ 30 mA, 160 mV @ 80 mA
• Ripple Rejection: 70 dB @ 1.0 kHz
• 1.5% Output Precision @ 25°C
• Thermal Shutdown
• V
out
Available at 2.5 V, 2.8 V, 2.9 V, 3.0 V, 5.0 V
• Operating Range from −40 to +85°C
• Dual Version is Available as MC33762
• Pb−Free Packages are Available
Applications
• Noise Sensitive Circuits: VCOs RF Stages, etc.
• Bursting Systems (TDMA Phones)
• All Battery Operated Devices
Figure 1. Simplified Block Diagram
Thermal
Shutdown
On/Off
Band Gap
Reference
*Current Limit
*Antisaturation Protection
*Load Transient Improvement
V
out
V
in
GND
NC
ON/
OFF
5
1
2
4
3
THIN SOT−23−5
SN SUFFIX
CASE 483
1
5
PIN CONNECTIONS AND
MARKING DIAGRAM
1
3
NC
V
in
2
GND
ON/OFF
4
V
out
5
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
ORDERING INFORMATION
(Top View)
http://onsemi.com
LxxAYW G
G
Lxx = Device Code
A = Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
MC33761
http://onsemi.com
2
PIN FUNCTION DESCRIPTIONS
Pin # Pin Name Function Description
1 V
in
Powers the IC A positive voltage up to 12 V can be applied upon this pin.
2 GND The IC’s ground
3 ON/OFF Shuts or wakes−up the IC A 900 mV level on this pin is sufficient to start the IC. A 150 mV shuts it
down.
4 NC None It makes no arm to connect the pin to a known potential, like in a
pin−to−pin replacement case.
5 V
out
Delivers the output voltage
This pin requires a 1.0 mF output capacitor to be stable.
MAXIMUM RATINGS
Rating Pin # Symbol
Value
Unit
Min Max
Power Supply Voltage 1 V
in
− 12 V
ESD Capability, HBM Model All Pins − − 1.0 kV
ESD Capability, Machine Model All Pins − − 200 V
Maximum Power Dissipation
NW Suffix, Plastic Package
Thermal Resistance Junction−to−Air
− P
D
R
q
JA
−
−
Internally Limited
210
W
°C/W
Operating Ambient Temperature
Maximum Junction Temperature (Note 1)
Maximum Operating Junction Temperature (Note 2)
− T
A
T
Jmax
T
J
−
−
−
−40 to +85
150
125
°C
°C
°C
Storage Temperature Range − T
stg
− −60 to +150 °C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
ELECTRICAL CHARACTERISTICS
(For typical values T
A
= 25°C, for min/max values T
A
= −40°C to +85°C, max T
J
= 125°C unless otherwise noted)
Characteristics Pin # Symbol Min Typ Max Unit
LOGIC CONTROL SPECIFICATIONS
Input Voltage Range 3 V
ON/OFF
0 − V
in
V
ON/OFF Input Resistance (all versions) 3 R
ON/OFF
− 250 −
kW
ON/OFF Control Voltages (Note 3)
Logic Zero, OFF State, I
O
= 50 mA
Logic One, ON State, I
O
= 50 mA
3 V
ON/OFF
−
900
−
−
150
−
mV
CURRENTS PARAMETERS
Current Consumption in OFF State (all versions)
OFF Mode Current: V
in
= V
out
+ 1.0 V, I
O
= 0, V
OFF
=
150 mV
− IQ
OFF
− 0.1 2.0
mA
Current Consumption in ON State (all versions)
ON Mode Current: V
in
= V
out
+ 1.0 V, I
O
= 0, V
ON
= 3.5 V
− IQ
ON
− 180 −
mA
Current Consumption in ON State (all versions), ON Mode
Saturation Current: V
in
= V
out
− 0.5 V, No Output Load
− IQ
SAT
− 800 −
mA
Current Limit V
in
= Vout
nom
+ 1.0 V,
Output is brought to Vout
nom
− 0.3 V (all versions)
− I
MAX
100 180 500 mA
1. Internally limited by shutdown.
2. Specifications are guaranteed below this value.
3. Voltage slope should be greater than 2.0 mV/ms.
MC33761
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (continued)
(For typical values T
A
= 25°C, for min/max values T
A
= −40°C to +85°C, max T
J
= 125°C unless otherwise noted)
Characteristics Pin # Symbol Min Typ Max Unit
OUTPUT VOLTAGES
V
out
+ 1.0 V < V
in
< 6.0 V, T
A
= 25°C, 1.0 mA < I
out
< 80 mA
2.5 V
5 V
out
2.462 2.5 2.537 V
2.8 V 5 V
out
2.758 2.8 2.842 V
2.9 V 5 V
out
2.857 2.9 2.943 V
3.0 V 5 V
out
2.955 3.0 3.045 V
5.0 V 5 V
out
4.925 5.0 5.075 V
Other Voltages up to 5.0 V Available in 50 mV Increment Steps 5 V
out
−1.5 X +1.5 %
V
out
+ 1.0 V < V
in
< 6.0 V, T
A
= −40°C to +85°C, 1.0 mA < I
out
< 80 mA
2.5 V
5 V
out
2.425 2.5 2.575 V
2.8 V 5 V
out
2.716 2.8 2.884 V
2.9 V 5 V
out
2.813 2.9 2.987
3.0 V 5 V
out
2.91 3.0 3.090 V
5.0 V 5 V
out
4.850 5.0 5.150 V
Other Voltages up to 5.0 V Available in 50 mV Increment Steps 5 V
out
−3.0 X +3.0 %
LINE AND LOAD REGULATION, DROPOUT VOLTAGES
Line Regulation (all versions)
V
out
+ 1.0 V < V
in
< 12 V, I
out
= 80 mA
5/1 Reg
line
− − 20 mV
Load Regulation (all versions)
V
in
= V
out
+ 1.0 V, C
out
= 1.0 mF, I
out
= 1.0 to 80 mA
5 Reg
load
− − 40 mV
Dropout Voltage (all versions) (Note 4)
I
out
= 30 mA
I
out
= 60 mA
I
out
= 80 mA
5
5
5
V
in
−V
out
V
in
−V
out
V
in
−V
out
−
−
−
90
140
160
150
200
250
mV
DYNAMIC PARAMETERS
Ripple Rejection (all versions)
V
in
= V
out
+ 1.0 V + 1.0 kHz 100 mVpp Sinusoidal Signal
5/1 Ripple − −70 − dB
Output Noise Density @ 1.0 kHz 5 − − 150 − nV/
√Hz
RMS Output Noise Voltage (all versions)
C
out
= 1.0 mF, I
out
= 50 mA, F = 100 Hz to 1.0 MHz
5 Noise − 35 −
mV
Output Rise Time (all versions) C
out
= 1.0 mF, I
out
= 50 mA,
10% of Rising ON Signal to 90% of Nominal V
out
5 t
rise
− 40 −
ms
THERMAL SHUTDOWN
Thermal Shutdown (all versions) − − − − 125 °C
4. V
out
is brought to V
out
− 100 mV.
P1-P3P4-P6P7-P9P10-P12P13-P13

MC33761SNT1-028

Mfr. #:
Buy MC33761SNT1-028
Manufacturer:
ON Semiconductor
Description:
LDO Voltage Regulators 2.8V 80mA Output
Lifecycle:
New from this manufacturer.
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