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MC33762 Datasheet

Dual Ultra Low-Noise Low Dropout Voltage Regulator

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MC33762
Dual Ultra Low−Noise Low
Dropout Voltage Regulator
with 1.0 V ON/OFF Control
The MC33762 is a dual Low DropOut (LDO) regulator featuring
excellent noise performances. Thanks to its innovative design, the
circuit reaches an impressive 40 µVRMS noise level without an
external bypass capacitor. Housed in a small µ8 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 µs, making the
MC33762 as a natural candidate for portable applications.
The MC33762 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 from choppy lines.
Features
Nominal Output Current of 80 mA with a 100 mA Peak Capability
Ultra−Low Noise: 150 nV/Hz @ 100 Hz, 40 µVRMS
100 Hz−100 kHz Typical, Iout = 60 mA, Co = 1.0 µF
Fast Response Time from OFF to ON: 40 µs Typical
Ready for 1.0 V Platforms: ON with a 900 mV High Level
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
Vout Available at 2.5 V, 2.8 V, and 3.0 V
Separate Dice for Each Regulator Provides Maximum Isolation
Between Regulators
Operating Range from −40 to +85°C
Applications
Noise Sensitive Circuits: VCOs RF Stages, etc.
Bursting Systems (TDMA Phones)
All Battery Operated Devices
http://onsemi.com
8
1
Micro8t
DM SUFFIX
CASE 846A
PIN CONFIGURATION AND
MARKING DIAGRAM
Gnd1 1
En1 2
Gnd2 3
En2 4
8 Vout1
7 VCC1
6 Vout2
5 VCC2
(Top View)
xxxx = Version
Y = Year
WW = Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
© Semiconductor Components Industries, LLC, 2003
July, 2003 − Rev. 4
1
Publication Order Number:
MC33762/D


  ON Semiconductor Electronic Components Datasheet  

MC33762 Datasheet

Dual Ultra Low-Noise Low Dropout Voltage Regulator

No Preview Available !

MC33762
EN1 2 On/Off
Band Gap
Reference
Thermal
Shutdown
*Current Limit
*Antisaturation Protection
*Load Transient Improvement
1
GND1
EN2 4 On/Off
Band Gap
Reference
Thermal
Shutdown
*Current Limit
*Antisaturation Protection
*Load Transient Improvement
3
GND2
Figure 1. Simplified Block Diagram
7 VCC1
8 Vout
5 VCC2
6 Vout
PIN FUNCTION DESCRIPTIONS
Pin # Pin Name
Function
1
Gnd1
Ground of the 1st LDO
2 En1 Enables the 1st LDO
3
Gnd2
Ground of the 2nd LDO
4 En2 Enables the 2nd LDO
5
Vcc2
2nd LDO Vcc pin
6
Vout2
Shuts or wakes−up the IC
7
Vcc1
1st LDO Vcc pin
8
Vout1
Delivers the output voltage
Description
A 900 mV level on this pin is sufficient to start this LDO. A 150 mV shuts it down.
A 900 mV level on this pin is sufficient to start this LDO. A 150 mV shuts it down.
This pin brings the power to the 1st LDO and requires adequate decoupling.
This pin requires a 1.0 µF output capacitor to be stable.
This pin brings the power to the 1st LDO and requires adequate decoupling.
This pin requires a 1.0 µF output capacitor to be stable.
MAXIMUM RATINGS
Rating
Power Supply Voltage
ESD Capability, HBM Model
ESD Capability, Machine Model
Maximum Power Dissipation
NW Suffix, Plastic Package
Thermal Resistance Junction−to−Air
Operating Ambient Temperature
Maximum Junction Temperature (Note 1)
Maximum Operating Junction Temperature (Note 2)
Storage Temperature Range
1. Internally limited by shutdown.
2. Specifications are guaranteed below this value.
Pin #
1
All Pins
All Pins
Symbol
Vin
PD
RqJ−A
TA
TJmax
TJ
Tstg
Value
Min Max Unit
− 12 V
− 1.0 kV
− 200 V
Internally Limited
W
− 240 °C/W
−40 to +85
°C
− 150 °C
− 125 °C
−60 to +150
°C
http://onsemi.com
2


Part Number MC33762
Description Dual Ultra Low-Noise Low Dropout Voltage Regulator
Maker ON Semiconductor
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MC33762 Datasheet PDF






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