NCP4561SN28T1 ON Semiconductor, NCP4561SN28T1 Datasheet

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NCP4561SN28T1

Manufacturer Part Number
NCP4561SN28T1
Description
IC REG LDO 2.8V 80MA SOT23-5
Manufacturer
ON Semiconductor
Datasheet

Specifications of NCP4561SN28T1

Regulator Topology
Positive Fixed
Voltage - Output
2.8V
Voltage - Input
Up to 12V
Voltage - Dropout (typical)
0.16V @ 80mA
Number Of Regulators
1
Current - Output
80mA
Current - Limit (min)
100mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
TSOT-23-5, TSOT-5, TSOP-5
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
NCP4561SN28T1OS

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
NCP4561SN28T1
Manufacturer:
ONSemico
Quantity:
19 300
NCP4561
Ultra Low−Noise Low
Dropout Voltage Regulator
with 1.0 V ON/OFF Control
excellent noise performances. Thanks to its innovative concept, the
circuit reaches an incredible 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.
time to a wake−up signal and makes it stay within 40 ms (in repetitive
mode), pushing the NCP4561 as a natural candidate in portable
applications.
excessive undershoots when the regulator is the seat of fast transient
bursts, as in any bursting systems.
shields the downstream electronics against choppy lines.
Features
Applications
© Semiconductor Components Industries, LLC, 2006
September, 2006 − Rev. 3
The NCP4561 is a Low DropOut (LDO) regulator featuring
The absence of external bandgap capacitor unleashes the response
The NCP4561 also hosts a novel architecture which prevents
Finally, with a static line regulation better than −75 dB, it naturally
100 kHz Typical, Iout = 60 mA, C
Repetition Rate
Ultra Low−Noise: 150 nV/√Hz @ 100 Hz, 40 mVRMS 100 Hz −
Fast Response Time from OFF to ON: 40 ms Typical at a 200 Hz
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
Noise Sensitive Circuits: VCOs RF Stages, etc.
Bursting Systems (TDMA Phones)
All Battery Operated Devices
GND
OFF
ON/
NC
1
3
2
*Current Limit
*Antisaturation Protection
*Load Transient Improvement
Reference
Band Gap
Figure 1. Simplified Block Diagram
On/Off
o
= 1.0 mF
Shutdown
Thermal
5
4
1
V
V
in
out
* Contact your ON Semiconductor sales
representative for other output voltage values.
NCP4561SN28T1
Device
ON/OFF
GND
ORDERING INFORMATION
PIN CONNECTIONS AND
NC
MARKING DIAGRAM
http://onsemi.com
P28 = Device Code
Y
W
1
2
3
5
SN SUFFIX
= Year
= Work Week
CASE 483
(Top View)
TSOP−5
Output*
Voltage
2.8 V
Publication Order Number:
1
4
5
3000/Tape & Reel
V
V
out
Shipping
in
NCP4561/D

Related parts for NCP4561SN28T1

NCP4561SN28T1 Summary of contents

Page 1

... PIN CONNECTIONS AND MARKING DIAGRAM ON/OFF GND out (Top View) P28 = Device Code Y = Year W = Work Week ORDERING INFORMATION Voltage Device Shipping Output* NCP4561SN28T1 2.8 V 3000/Tape & Reel * Contact your ON Semiconductor sales representative for other output voltage values. Publication Order Number: NCP4561/D ...

Page 2

PIN FUNCTION DESCRIPTIONS Pin # Pin Name Function 1 ON/OFF Shuts or wakes−up the IC 2 GND The IC’s ground 3 NC None 4 V Delivers the out output voltage 5 V Powers the IC in MAXIMUM RATINGS Rating Power ...

Page 3

ELECTRICAL CHARACTERISTICS (For Typical Values T = 25°C, for Min/Max values T A Characteristics Output Voltages V + 1.0 V < V < 6 25°C, 1.0 mA < I out 1.0 V < ...

Page 4

Load Regulation The change in output voltage for a change in output current at a constant chip temperature. Dropout Voltage The input/output differential at which the regulator output no longer maintains regulation against further reductions in input voltage. Measured when ...

Page 5

OUTPUT CURRENT (mA) Figure 2. Ground Current vs. Output Current 200 150 100 − OUTPUT CURRENT (mA) ...

Page 6

POWER SUPPLY REJECTION RATIO Mag (dB out −7. out −15. load −22.50 −30.00 −37.50 −45.00 −52.50 −60.00 −67.50 10 100 1 k FREQUENCY (Hz) Figure 8. ...

Page 7

... NCP4561 can be calculated from the following formula: Ptot + gnd or Vin max + output current is needed, the ground current is extracted from the data−sheet curves: 4 mA. For a NCP4561SN28T1 (2.8 V) delivering 80 mA and operating at 25°C, the maximum input voltage will then be 8.3 V. http://onsemi.com Jmax A R ...

Page 8

... Dropout SW* NCP4561 R1 100 k Figure 10. A Typical Application Schematic inductances/capacitances are minimized. This layout is the basis for the NCP4561 performance evaluation board. The BNC connectors give the user an easy and quick evaluation mean. ON SEMICONDUCTOR NCP4561 EVALUATION BOARD DROPOUT + IN _ OFF ON IN ON/OFF Figure 11 ...

Page 9

Understanding the Load Transient Improvement The NCP4561 features a novel architecture which allows the user to easily implement the regulator in burst systems where the time between two current shots is kept very small. The quality of the transient response ...

Page 10

TYPICAL TRANSIENT RESPONSES Tek Run: 1.00 MS/s Sample V out 200 mV/div I load 20 mA/div Ch2 20.0 mVW M 50.0 ms Ch2 Ch4 200 mV (Conditions 3 out Figure 13. Load Current is Pulsed ...

Page 11

TYPICAL TRANSIENT RESPONSES Tek Run: 1.00 MS/s Sample 200 mV/div 20 mA/div Ch2 20.0 mVW M 50.0 ms Ch2 Ch4 200 mV (Conditions 3 out Figure 15. Load Current is Switched from ...

Page 12

... The footprint for the semiconductor packages must be the correct size to insure proper solder connection 0.074 Device NCP4561SN28T1 *Contact your ON Semiconductor sales representative for other output voltage values. interface between the board and the package. With the correct pad geometry, the packages will self align when subjected to a solder reflow process ...

Page 13

... Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303− ...

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