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TPS79228DBVTG4 Datasheet Preview

TPS79228DBVTG4 Datasheet

LOW-DROPOUT LINEAR REGULATOR

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www.ti.com
Actual Size
(3,00 mm x 3,00 mm)
TPS79201, TPS79225
Actual Size
(3,00 mm x 3,00 mm)
TPS79228, TPS79230
SLVS337B – MARCH 2001 – REVISED MAY 2002
ULTRALOW-NOISE, HIGH PSRR, FAST RF 100-mA
LOW-DROPOUT LINEAR REGULATORS
FEATURES
D 100-mA Low-Dropout Regulator With EN
D Available in 2.5-V, 2.8-V, 3-V, and Adj.
D High PSRR (75 dB at 10 kHz)
D Ultralow Noise (27 µV)
D Fast Start-Up Time (50 µs)
D Stable With Any 1-µF Ceramic Capacitor
D Excellent Load/Line Transient
D Very Low Dropout Voltage
(55 mV at Full Load, TPS79230)
D 5-Pin SOT23 (DBV) Package
D TPS791xx Provides EN Options
APPLICATIONS
D Cellular and Cordless Telephones
D VCOs
D RF
D Bluetooth, Wireless LAN
D Handheld Organizers, PDA
DESCRIPTION
The TPS792xx family of low-dropout (LDO)
low-power linear voltage regulators features high
power supply rejection ratio (PSRR), ultralow
noise, fast start-up, and excellent line and load
transient responses in a small outline, SOT23,
package. Each device in the family is stable, with
a small 1-µF ceramic capacitor on the output. The
family uses an advanced, proprietary BiCMOS
fabrication process to yield extremely low dropout
voltages (e.g., 55 mV at 100 mA, TPS79230).
Each device achieves fast start-up times
(approximately 50 µs with a 0.001 µF bypass
capacitor) while consuming very low quiescent
current (170 µA typical). Moreover, when the
device is placed in standby mode, the supply
current is reduced to less than 1 µA. The
TPS79228 exhibits approximately 27 µVRMS of
output voltage noise with a 0.1 µF bypass
capacitor. Applications with analog components
that are noise sensitive, such as portable RF
electronics, benefit from the high PSRR and low
noise features as well as the fast response time.
DBV PACKAGE
(TOP VIEW)
IN 1 5 OUT
GND
2
EN 3 4 BYPASS
Fixed Option
DBV PACKAGE
(TOP VIEW)
IN 1 6 OUT
GND
25
FB
EN 3 4 BYPASS
Adjustable Option
TPS79228
RIPPLE REJECTION
vs
FREQUENCY
90
IO = 100 mA
80
70
60
50
40
IO = 10 mA
30
VI = 3.8 V
20 Co = 10 µF
10 C(byp) = 0.01 µF
10 100 1 k 10 k 100 k 1 M 10 M
f – Frequency – Hz
TPS79228
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
0.3
VI = 3.8 V
0.25
Co = 1 µF
C(byp) = 0.1 µF
0.2
0.15
IO = 1 mA
0.1
IO = 100 mA
0.05
0
100
1k
10k
f – Frequency – Hz
100k
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
Bluetooth is a trademark owned by the Bluetooth SIG, Inc.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright 2002, Texas Instruments Incorporated




etcTI

TPS79228DBVTG4 Datasheet Preview

TPS79228DBVTG4 Datasheet

LOW-DROPOUT LINEAR REGULATOR

No Preview Available !

TPS79201, TPS79225
TPS79228, TPS79230
SLVS337B MARCH 2001 REVISED MAY 2002
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ORDERING INFORMATION
TJ
VOLTAGE
PACKAGE
1.2 to 5.5 V
40°C to 125°C
2.5 V
2.8 V
SOT23
(DBV)
3V
(1) The DBVT indicates tape and reel of 250 parts.
(2) The DBVR indicates tape and reel of 3000 parts.
PART NUMBER
TPS79201DBVT(1)
TPS79201DBVR(2)
TPS79225DBVT(1)
TPS79225DBVR(2)
TPS79228DBVT(1)
TPS79228DBVR(2)
TPS79230DBVT(1)
TPS79230DBVR(2)
SYMBOL
PEVI
PEXI
PEWI
PEYI
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)(1)
Input voltage range (2)
TPS79201, TPS79225
TPS79228, TPS79230
0.3 V to 6 V
Voltage range at EN
Voltage on OUT
0.3 V to VI + 0.3 V
0.3 V to 6 V
Peak output current
Internally limited
ESD rating, HBM
2 kV
ESD rating, CDM
500 V
Continuous total power dissipation
See Dissipation Rating Table
Operating virtual junction temperature range, TJ
40°C to 150°C
Operating ambient temperature range, TA
40°C to 85°C
Storage temperature range, Tstg
65°C to 150°C
(1) Stresses beyond those listed under absolute maximum ratingsmay cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditionsis
not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal.
PACKAGE DISSIPATION RATING
BOARD
Low K(1)
PACKAGE
DBV
RθJC
63.75°C/W
RθJA
256°C/W
DERATING FACTOR
ABOVE TA = 25°C
3.906 mW/°C
TA 25°C
TA = 70°C
TA = 85°C
POWER RATING POWER RATING POWER RATING
391 mW
215 mW
156 mW
High K(2)
DBV
63.75°C/W 178.3°C/W
5.609 mW/°C
561 mW
308 mW
224 mW
(1) The JEDEC low K (1s) board design used to derive this data was a 3-inch x 3-inch, two layer board with 2 ounce copper traces on top of the board.
(2) The JEDEC high K (2s2p) board design used to derive this data was a 3-inch x 3-inch, multilayer board with 1 ounce internal power and ground
planes and 2 ounce copper traces on top and bottom of the board.
RECOMMENDED OPERATING CONDITIONS
MIN NOM MAX UNIT
Input voltage, VI (1)
Continuous output current, IO (2)
2.7
5.5 V
0
100 mA
Operating junction temperature, TJ
40
125 °C
(1) To calculate the minimum input voltage for your maximum output current, use the following formula:
VI(min) = VO(max) + VDO (max load)
(2) Continuous output current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the
device operate under conditions beyond those specified in this table for extended periods of time.
2


Part Number TPS79228DBVTG4
Description LOW-DROPOUT LINEAR REGULATOR
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