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TPS79015 Datasheet Preview

TPS79015 Datasheet

ULTRALOW-POWER LOW-NOISE 50-mA LOW-DROPOUT LINEAR REGULATORS

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TPS79015, TPS79018, TPS79025, TPS79028, TPS79030
ULTRALOW-POWER LOW-NOISE 50-mA
LOW-DROPOUT LINEAR REGULATORS
SLVS299B – SEPTEMBER 2000 – REVISED MAY 2001
D 50-mA Low-Dropout Regulator
D Available in 1.5-V, 1.8-V, 2.5-V, 2.8-V, 3.0-V
D Output Noise Typically 56 µVRMS
(TPS79030)
D Only 17 µA Quiescent Current at 50 mA
D 1 µA Quiescent Current in Standby Mode
D Dropout Voltage Typically 57 mV at 50 mA
(TPS79030)
D Over Current Limitation
D –40°C to 125°C Operating Junction
Temperature Range
D 5-Pin SOT-23 (DBV) Package
description
The TPS790xx family of low-dropout (LDO)
voltage regulators offers the benefits of
low-dropout voltage, ultralow-power operation,
low-output noise, and miniaturized packaging.
These regulators feature low-dropout voltages
and ultralow quiescent current compared to
conventional LDO regulators. An internal resistor,
in conjunction with an external bypass capacitor,
creates a low-pass filter to reduce the noise. The
TPS79030 exhibits only 56 µVRMS of output
voltage noise using 0.01 µF bypass and 10 µF
output capacitors. Offered in a 5-terminal small
outline integrated-circuit SOT-23 package, the
TPS790xx series devices are ideal for
micropower operations, low output noise, and
where board space is limited.
The usual PNP pass transistor has been replaced
by a PMOS pass element. Because the PMOS
pass element behaves as a low-value resistor, the
dropout voltage is very low, typically 57 mV at
50 mA of load current (TPS79030), and is directly
proportional to the load current. The quiescent
current is ultralow (17 µA typically) and is stable
over the entire range of output load current (0 mA
to 50 mA). Intended for use in portable systems
such as laptops and cellular phones, the
ultralow-dropout voltage feature and ultralow-
power operation result in a significant increase in
system battery operating life.
DBV PACKAGE
(TOP VIEW)
IN 1 5 OUT
GND
2
EN 3 4 BYPASS
TPS79030
GROUND CURRENT
vs
JUNCTION TEMPERATURE
22
VI = 4 V
21 Co = 4.7 µF
20
IO = 50 mA
19
IO = 1 mA
18
17
16
15
–40 –25 –10 5 20 35 50 65 80 95 110 125
TJ – Junction Temperature – °C
1200
1000
TPS78930
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
VI = 4 V
Co = 4.7 µF
C(byp) = 0.1 µF
800
600
IO = 50 mA
400 IO = 1 mA
200
0
100 1k 10k 100k
f – Frequency – Hz
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.
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.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright 2001, Texas Instruments Incorporated
1




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TPS79015 Datasheet Preview

TPS79015 Datasheet

ULTRALOW-POWER LOW-NOISE 50-mA LOW-DROPOUT LINEAR REGULATORS

No Preview Available !

TPS79015, TPS79018, TPS79025, TPS79028, TPS79030
ULTRALOW-POWER LOW-NOISE 50-mA
LOW-DROPOUT LINEAR REGULATORS
SLVS299B SEPTEMBER 2000 REVISED MAY 2001
description (continued)
The TPS790xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current
to 1 µA typical at TJ = 25°C. The TPS790xx is offered in 1.5 V, 1.8 V, 2.5 V, 2.8 V, 3.0 V.
AVAILABLE OPTIONS
TJ VOLTAGE PACKAGE
1.5 V
40°C to 125°C
1.8 V
2.5 V
2.8 V
SOT-23
(DBV)
3.0 V
The DBVT indicates tape and reel of 250 parts.
The DBVR indicates tape and reel of 3000 parts.
PART NUMBER
TPS79015DBVTTPS79015DBVR
TPS79018DBVTTPS79018DBVR
TPS79025DBVTTPS79025DBVR
TPS79028DBVTTPS79028DBVR
TPS79030DBVTTPS79030DBVR
SYMBOL
PEBI
PECI
PEDI
PEEI
PEFI
functional block diagram
IN
EN 150 k
Vref
GND
TPS79015/18/25/28/30
Current Limit
/ Thermal
Protection
OUT
Bypass
TERMINAL
NAME NO.
BYPASS
4
EN 3
GND
2
IN 1
OUT
5
Terminal Functions
I/O
I Bypass
I Enable input
Ground
I Input supply voltage
O Regulated output voltage
DESCRIPTION
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number TPS79015
Description ULTRALOW-POWER LOW-NOISE 50-mA LOW-DROPOUT LINEAR REGULATORS
Maker etcTI
Total Page 20 Pages
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