NCP3985SN180R2G Datasheet, PDF (1/10 Pages) ON Semiconductor – Micropower, 150 mA Low-Noise, High PSRR, Ultra-Low Dropout BiCMOS Voltage Regulator

NCP3985
Micropower, 150 mA
Low-Noise, High PSRR,
Ultra-Low Dropout BiCMOS
Voltage Regulator
The NCP3985 is 150 mA LDO that provides the engineer with a
very stable, accurate voltage with low noise and high Power Supply
Rejection Ratio (PSRR) suitable for sensitive applications. In order to
optimize performance for battery operated portable applications, the
NCP3985 employs an advanced BiCMOS process to combine the
benefits of low noise and superior dynamic performance of bipolar
elements with very low ground current consumption at full loads
offered by CMOS.
The NCP3985 is stable with small, low value capacitors and is
available in TSOP-5 package.
Features
•ăOutput Voltage Options:
- 1.8 V, 2.5 V, 2.75 V, 2.8 V, 3.0 V, 3.3 V
- Contact Factory for Other Voltage Options
•ăOutput Current Limit 200 mA
•ăLow Noise (typ 20 mV_rms)
•ăHigh PSRR (typ 70 dB)
•ăStable with Ceramic Output Capacitors as low as 1 mF
•ăLow Sleep Mode Current (max 1 mA)
•ăActive Discharge Circuit
•ăCurrent Limit Protection
•ăThermal Shutdown Protection
•ăDirect Replacement for LP3985
•ăThese are Pb-Free Devices
Typical Applications
•ăCellular Telephones
•ăNoise Sensitive Applications (Video, Audio)
•ăAnalog Power Supplies
•ăPDAs / Palmtops / Organizers / GPS
•ăBattery Supplied Devices
http://onsemi.com
5
1
TSOP-5
SN SUFFIX
CASE 483
MARKING
DIAGRAM
5
XXXAYWG
G
1
XXX = Specific Device Code
A = Assembly Location
Y = Year
W = Work Week
G = Pb-Free Package
(Note: Microdot may be in either location)
PIN ASSIGNMENT
V_in
V_out
GND
CE
C_noise
(Top View)
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 9 of this data sheet.
V_in
C_in
V_in
V_out
NCP3985
CE
C_noise
GND
C_noise
V_out
C_out
Figure 1. Typical Application Schematic
©Ă Semiconductor Components Industries, LLC, 2008
1
April, 2008 - Rev. 1
Publication Order Number:
NCP3985/D