TPS77501PWPQ1 [TI]
1.5 V-5.5V ADJUSTABLE POSITIVE LDO REGULATOR, PDSO20, PLASTIC, HTSSOP-20;
| 型号： | TPS77501PWPQ1 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 1.5 V-5.5V ADJUSTABLE POSITIVE LDO REGULATOR, PDSO20, PLASTIC, HTSSOP-20 光电二极管 输出元件 调节器 |
| 文件： | 总21页 (文件大小：319K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
D
Qualification in Accordance With
AEC-Q100
D
D
Fast Transient Response
†
2% Tolerance Over Specified Conditions for
Fixed-Output Versions
D
Qualified for Automotive Applications
D
Customer-Specific Configuration Control
Can Be Supported Along With
Major-Change Approval
D
20-Pin TSSOP PowerPAD (PWP) Package
Thermal Shutdown Protection
D
D
D
D
D
D
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
PWP PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
GND/HSINK
GND/HSINK
GND/HSINK
NC
Open Drain Power-On Reset With 200-ms
Delay (TPS775xx)
GND/HSINK
GND
Open Drain Power Good (TPS776xx)
500-mA Low-Dropout Voltage Regulator
NC
NC
EN
RESET/PG
FB/NC
IN
IN
Available in 1.5-V, 1.6-V (TPS77516 Only),
1.8-V, 2.5-V, 2.8-V (TPS77628 Only), 3.3-V
Fixed Output and Adjustable Versions
OUT
NC
OUT
GND/HSINK
GND/HSINK
GND/HSINK
GND/HSINK
D
D
Dropout Voltage to 169 mV (Typ) at 500 mA
(TPS77x33)
Ultralow 85 µA Typical Quiescent Current
NC – No internal connection
†
Contact factory for details. Q100 qualification data available on
request.
description
The TPS775xx and TPS776xx devices are designed to have a fast transient response and be stable with a
10-µF low ESR capacitors. This combination provides high performance at a reasonable cost.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 169 mV
at an output current of 500 mA for the TPS77x33) and is directly proportional to the output current. Additionally,
since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent
of output loading (typically 85 µA over the full range of output current, 0 mA to 500 mA). These two key
specifications yield a significant improvement in operating life for battery-powered systems. This LDO family
also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the
quiescent current to 1 µA at T = 25°C.
J
TheRESET output of the TPS775xx initiates a reset in microcomputer and microprocessor systems in the event
of an undervoltage condition. An internal comparator in the TPS775xx monitors the output voltage of the
regulator to detect an undervoltage condition on the regulated output voltage.
Power good (PG) of the TPS776xx is an active high output, which can be used to implement a power-on reset
or a low-battery indicator.
TheTPS775xxandTPS776xxareofferedin1.5-V, 1.6-V(TPS77516only), 1.8-V, 2.5-V, 2.8V(TPS77628only),
and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V
for TPS77501 option and 1.2 V to 5.5 V for TPS77601 option). Output voltage tolerance is specified as a
maximum of 2% over line, load, and temperature ranges. The TPS775xx and TPS776xx families are available
in 20 pin TSSOP package.
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.
PowerPAD is a trademark of Texas Instruments.
Copyright 2003, Texas Instruments Incorporated
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
TPS77x33
DROPOUT VOLTAGE
vs
TPS77x33
FREE-AIR TEMPERATURE
LOAD TRANSIENT RESPONSE
3
2
1
0
10
10
10
10
C
= 2x47 µF
o
C
= 10 µF
o
ESR = 1/2x100 mΩ
= 3.3 V
50
0
V
O
V = 4.3 V
I
I
= 500 mA
O
–50
I
O
= 10 mA
500
0
–1
10
10
I
= 0 mA
O
–2
–60 –40 –20
0
20 40 60 80 100 120 140
0
20 40 60 80 100 120 140 160 180 200
T
A
– Free-Air Temperature – °C
t – Time – µs
†
AVAILABLE OPTIONS
OUTPUT VOLTAGE (V)
PACKAGED DEVICES
TSSOP (PWP)
T
J
TYP
3.3
2.5
TPS77533PWPQ1 TPS77633PWPQ1
TPS77525PWPQ1 TPS77625PWPQ1
2.8
—
TPS77628PWPQ1
1.8
TPS77518PWPQ1 TPS77618PWPQ1
§
1.6
TPS77516PWPQ1
—
–40°C to 125°C
1.5
TPS77515PWPQ1 TPS77615PWPQ1
‡
Adjustable
—
TPS77601PWPQ1
1.2 V to 5.5 V
‡
Adjustable
1.5 V to 5.5 V
TPS77501PWPQ1
—
†
The TPS775xx has an open-drain power-on reset with a 200-ms delay function. The TPS776xx
has an open-drain power good function.
‡
§
TheTPS77x01 is programmable using an external resistor divider (see application information).
The PWP package is available taped and reeled. Add an R suffix to the device type (e.g.,
TPS77501QPWPRQ1).
TPS77516 is Product Preview.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
6
7
16
RESET/
PG
V
I
IN
IN
RESET/PG
14
13
OUT
OUT
V
O
5
0.1 µF
EN
†
C
o
+
10 µF
GND
3
†
See application information section for capacitor selection details.
Figure 1. Typical Application Configuration for Fixed Output Options
functional block diagram—adjustable version
IN
EN
PG or RESET
OUT
_
+
+
_
200 ms Delay
(for RESET Option)
R1
V
ref
= 1.183 V
FB/NC
R2
GND
External to the device
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
functional block diagram—fixed-voltage version
IN
EN
PG or RESET
_
+
OUT
+
_
200 ms Delay
(for RESET Option)
R1
R2
V
ref
= 1.183 V
GND
Terminal Functions
TSSOP Package (TPS775xx)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
5
EN
I
I
Enable input
FB/NC
15
3
Feedback input voltage for adjustable device (no connect for fixed options)
GND
Regulator ground
Ground/heatsink
GND/HSINK
1, 2, 9, 10, 11,
12, 19, 20
IN
6, 7
4, 8, 17, 18
13, 14
I
Input voltage
NC
No connect
OUT
RESET
O
O
Regulated output voltage
RESET output
16
TSSOP Package (TPS776xx)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
5
EN
I
I
Enable input
FB/NC
15
3
Feedback input voltage for adjustable device (no connect for fixed options)
GND
Regulator ground
Ground/heatsink
GND/HSINK
1, 2, 9, 10, 11,
12, 19, 20
IN
6, 7
4, 8, 17, 18
13, 14
I
Input voltage
NC
OUT
PG
No connect
O
O
Regulated output voltage
PG output
16
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
TPS775xx RESET timing diagram
V
I
†
V
res
†
V
res
t
‡
‡
V
O
V
IT+
V
IT+
Threshold
Voltage
Less than 5% of the
output voltage
‡
‡
V
IT–
V
IT–
t
RESET
Output
200 ms Delay
200 ms Delay
Output
Undefined
Output
Undefined
t
†
V
istheminimuminputvoltageforavalidRESET. ThesymbolV
isnotcurrentlylistedwithinEIAorJEDECstandardsforsemiconductor
–Trip voltage is typically 5% lower than the output voltage (95%V ) V to V is the hysteresis voltage.
O IT–
res
symbology.
res
‡
V
IT
IT+
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
Ĕ
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
‡
Input voltage range , V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 13.5 V
I
Voltage range at EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 16.5 V
Maximum RESET voltage (TPS775xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5 V
Maximum PG voltage (TPS776xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5 V
Peak output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited
Output voltage, V (OUT, FB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
O
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See dissipation rating tables
Operating virtual junction temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 125°C
J
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
ESD rating, HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV
†
‡
Stresses beyond those listed under “absolute maximum ratings” may 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 conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltage values are with respect to network terminal ground.
DISSIPATION RATING TABLE – FREE-AIR TEMPERATURES
AIR FLOW
(CFM)
T
< 25°C
DERATING FACTOR
T
= 70°C
T = 85°C
A
A
A
PACKAGE
POWER RATING
ABOVE T = 25°C
POWER RATING POWER RATING
A
0
2.9 W
23.5 mW/°C
34.6 mW/°C
23.8 mW/°C
57.9 mW/°C
1.9 W
2.8 W
1.9 W
4.6 W
1.5 W
2.2 W
1.5 W
3.8 W
§
PWP
PWP
300
0
4.3 W
3 W
¶
300
7.2 W
§
¶
This parameter is measured with the recommended copper heat sink pattern on a 1-layer PCB, 5-in × 5-in PCB, 1 oz. copper,
2-in × 2-in coverage (4 in ).
This parameter is measured with the recommended copper heat sink pattern on a 8-layer PCB, 1.5-in × 2-in PCB, 1 oz. copper
2
2
2
with layers 1, 2, 4, 5, 7, and 8 at 5% coverage (0.9 in ) and layers 3 and 6 at 100% coverage (6 in ). For more information, refer
to TI technical brief SLMA002.
recommended operating conditions
MIN
2.7
1.5
1.2
0
MAX
10
UNIT
#
Input voltage, V
V
I
TPS77501
TPS77601
5.5
Output voltage range, V
V
O
5.5
Output current, I (see Note 1)
500
125
mA
O
Operating virtual junction temperature, T (see Note 1)
–40
°C
J
#
To calculate the minimum input voltage for your maximum output current, use the following equation: V
I(min)
= V
+ V
.
DO(max load)
O(max)
NOTE 1: Continuous 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.
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
electrical characteristics over recommended operating free-air temperature range,
V = V
+ 1 V, I = 1 mA, EN = 0 V, C = 10 µF (unless otherwise noted)
I
O(typ)
O
o
PARAMETER
TEST CONDITIONS
1.5 V ≤ V ≤ 5.5 V, T = 25°C
MIN
TYP
MAX
UNIT
V
O
O
J
TPS77501
TPS77601
TPS77x15
TPS77516
TPS77x18
TPS77x25
TPS77628
TPS77x33
1.5 V ≤ V ≤ 5.5 V,
T = –40°C to 125°C
0.98V
1.02V
O
J
O
O
1.2 V ≤ V ≤ 5.5 V,
T = 25°C
J
V
O
O
V
1.2 V ≤ V ≤ 5.5 V,
T = –40°C to 125°C
J
0.98V
1.02V
O
O
O
T = 25°C,
J
2.7 V < V < 10 V
IN
1.5
1.6
1.8
2.5
2.8
3.3
85
T = –40°C to 125°C, 2.7 V < V < 10 V
J IN
1.470
1.568
1.764
2.450
2.744
3.234
1.530
1.632
1.836
2.550
2.856
3.366
125
T = 25°C,
J
2.7 V < V < 10 V
IN
V
V
T = –40°C to 125°C, 2.7 V < V < 10 V
J IN
Output voltage (10 µA to 500 mA
load) (see Note 2)
T = 25°C,
J
2.8 V < V < 10 V
IN
T = –40°C to 125°C, 2.8 V < V < 10 V
J IN
T = 25°C,
J
3.5 V < V < 10 V
IN
T = –40°C to 125°C, 3.5 V < V < 10 V
J IN
T = 25°C,
J
3.8 V < V < 10 V
IN
T = –40°C to 125°C, 3.8 V < V < 10 V
J IN
T = 25°C,
J
4.3 V < V < 10 V
IN
T = –40°C to 125°C, 4.3 V < V < 10 V
J IN
10 µA < I < 500 mA, T = 25°C
Quiescent current (GND current)
EN = 0V, (see Note 2)
O
J
µA
I
O
= 500 mA,
T = –40°C to 125°C
J
Output voltage line regulation (∆V /V
(see Notes 2 and 3)
O
O
)
V
O
+ 1 V < V ≤ 10 V, T = 25°C
0.01
3
%/V
mV
I
J
Load regulation
BW = 200 Hz to 100 kHz, I = 500 mA
C
Output noise voltage (TPS77x18)
Output current limit
53
µVrms
C
= 10 µF,
T = 25°C
J
o
V
O
= 0 V
1.7
150
1
2
10
A
Thermal shutdown junction temperature
°C
µA
EN = V ,
T = 25°C, 2.7 V < V < 10 V
J I
I
Standby current
EN = V ,
I
T = –40°C to 125°C
J
µA
2.7 V < V < 10 V
I
FB input current
TPS77x01
FB = 1.5 V
2
nA
V
High level enable input voltage
Low level enable input voltage
1.7
0.9
V
Power supply ripple rejection (see Note 2)
f = 1 KHz,
C
= 10 µF, T = 25°C
60
dB
o
J
NOTES: 2. Minimum IN operating voltage is 2.7 V or V
+ 1 V, whichever is greater. Maximum IN voltage 10V.
O(typ)
= 10 V:
3. If V ≤ 1.8 V then V
Imin
= 2.7 V, V
Imax
O
OǒVImax * 2.7 VǓ
V
ǒ
Ǔ
Line Reg. (mV) + %ńV
1000
100
If V ≥ 2.5 V then V
Imin
= V + 1 V, V
= 10 V:
Imax
O
O
* ǒV
100
Ǔ
) 1 V Ǔ
1000
ǒVImax
V
O
O
ǒ
Ǔ
Line Reg. (mV) + %ńV
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
electrical characteristics over recommended operating free-air temperature range,
V = V
+ 1 V, I = 1 mA, EN = 0 V, C = 10 µF (unless otherwise noted) (continued)
I
O(typ)
O
o
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Minimum input voltage for valid RESET
Trip threshold voltage
Hysteresis voltage
I
= 300 µA
1.1
V
O(RESET)
V
decreasing
92
98
%V
%V
V
O
O
Measured at V
0.5
Reset
(TPS775xx)
O
O
Output low voltage
V = 2.7 V,
I
O(RESET)
= 1mA
0.15
0.4
1
I
Leakage current
V
= 5 V
µA
ms
V
(RESET)
RESET time-out delay
Minimum input voltage for valid PG
Trip threshold voltage
Hysteresis voltage
200
1.1
I
= 300 µA
O(PG)
V
decreasing
92
98
%V
%V
V
O
O
PG
(TPS776xx)
Measured at V
0.5
O
O
Output low voltage
V = 2.7 V,
I
O(PG)
= 1 mA
0.15
0.4
1
I
Leakage current
V
= 5 V
µA
(PG)
EN = 0 V
EN = V
–1
–1
0
285
169
169
1
Input current (EN)
µA
1
I
I
O
I
O
I
O
I
O
I
O
I
O
= 500 mA,
= 500 mA,
= 500 mA,
= 500 mA,
= 500 mA,
= 500 mA,
T = 25°C
J
TPS77628
TPS77533
TPS77633
T = –40°C to 125°C
J
410
287
287
T = 25°C
J
Dropout voltage (see Note 4)
mV
T = –40°C to 125°C
J
T = 25°C
J
T = –40°C to 125°C
J
NOTE 4: IN voltage equals V (typ) – 100 mV; TPS77x15, TPS77516, TPS77x18, and TPS77x25 dropout voltage limited by input voltage range
O
limitations (i.e., TPS77x33 input voltage needs to drop to 3.2 V for purpose of this test).
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
vs Output current
vs Free-air temperature
vs Free-air temperature
vs Frequency
2, 3, 4
5, 6, 7
8
V
Output voltage
O
Ground current
Power supply ripple rejection
Output spectral noise density
Output impedance
9
vs Frequency
10
Z
o
vs Frequency
11
vs Input voltage
12
V
DO
Dropout voltage
vs Free-air temperature
vs Output voltage
13
Input voltage (min)
14
Line transient response
Load transient response
Output voltage
15, 17
16, 18
19
V
O
vs Time
Equivalent series resistance (ESR)
vs Output current
21 – 24
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
TYPICAL CHARACTERISTICS
TPS77x33
TPS77x15
OUTPUT VOLTAGE
vs
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
OUTPUT CURRENT
1.4985
1.4980
1.4975
1.4970
1.4965
1.4960
3.2835
3.2830
V = 2.7 V
V = 4.3 V
I
I
T
A
= 25°C
T
A
= 25°C
3.2825
3.2820
3.2815
3.2810
3.2805
3.2800
1.4955
1.4950
0
0.1
0.2
0.3
0.4
0.5
0
0.1
0.2
0.3
0.4
0.5
I
O
– Output Current – A
I
O
– Output Current – A
Figure 2
Figure 3
TPS77x25
TPS77x33
OUTPUT VOLTAGE
vs
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
FREE-AIR TEMPERATURE
2.4960
2.4955
2.4950
2.4945
3.32
3.31
V = 3.5 V
I
V = 4.3 V
I
T
A
= 25°C
3.30
3.29
3.28
3.27
3.26
3.25
I
O
= 500 mA
2.4940
2.4935
2.4930
I
O
= 1 mA
2.4925
2.4920
0
0.1
0.2
0.3
0.4
0.5
–60 –40 –20
0
20 40 60 80 100 120 140
I
O
– Output Current – A
T
A
– Free-Air Temperature – °C
Figure 4
Figure 5
9
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TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
TYPICAL CHARACTERISTICS
TPS77x15
OUTPUT VOLTAGE
vs
TPS77x25
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
1.515
2.515
2.510
2.505
2.500
2.495
2.490
V = 3.5 V
I
V = 2.7 V
I
1.510
1.505
1.500
1.495
1.490
1.485
I
O
= 500 mA
I
O
= 500 mA
I
O
= 1 mA
I
O
= 1 mA
2.485
2.480
–60 –40 –20
0
20 40 60 80 100 120 140
–60 –40 –20
0
20
40
60
80 100 120
T
A
– Free-Air Temperature – °C
T
A
– Free-Air Temperature – °C
Figure 6
Figure 7
TPS77xxx
GROUND CURRENT
vs
TPS77x33
POWER SUPPLY RIPPLE REJECTION
vs
FREE-AIR TEMPERATURE
FREQUENCY
90
100
95
90
85
80
75
V = 4.3 V
I
o
A
V = 2.7 V
80
70
I
C
T
= 10 µF
= 25°C
60
50
40
30
20
I
O
= 1 mA
I
O
= 500 mA
10
0
–10
1
2
10
3
10
4
10
5
10
6
10
–60 –40 –20
0
20 40 60 80 100 120 140
10
T
A
– Free-Air Temperature – °C
f – Frequency – Hz
Figure 8
Figure 9
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TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
TYPICAL CHARACTERISTICS
TPS77x33
OUTPUT IMPEDANCE
vs
TPS77x33
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
FREQUENCY
–5
–6
0
10
10
V = 4.3 V
I
o
A
V = 4.3 V
I
C
T
= 10 µF
= 25°C
C
T
= 10 µF
= 25°C
o
A
I
O
= 1 mA
I
O
= 7 mA
10
–1
10
I
O
= 500 mA
–7
–8
10
I
= 500 mA
O
10
–2
10
2
3
10
4
10
5
10
1
2
10
3
10
4
10
5
10
6
10
10
10
f – Frequency – kHz
f – Frequency – Hz
Figure 10
Figure 11
TPS77x33
DROPOUT VOLTAGE
vs
TPS77x01
DROPOUT VOLTAGE
vs
INPUT VOLTAGE
FREE-AIR TEMPERATURE
3
2
1
0
350
300
10
I
= 500 mA
O
C
= 10 µF
o
10
10
10
I
= 500 mA
O
250
200
150
100
50
T
= 125°C
A
T
= 25°C
A
I
O
= 10 mA
T
A
= –40°C
–1
10
10
I
= 0 mA
O
–2
0
2.5
3
3.5
4
4.5
5
–60 –40 –20
0
20 40 60 80 100 120 140
V – Input Voltage – V
I
T
A
– Free-Air Temperature – °C
Figure 12
Figure 13
11
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TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
TYPICAL CHARACTERISTICS
INPUT VOLTAGE (MIN)
TPS77x15
vs
LINE TRANSIENT RESPONSE
OUTPUT VOLTAGE
4
I
O
= 0.5 A
3.7
2.7
T
= 25°C
A
T
A
= 125°C
3
T
A
= –40°C
10
0
2.7
C
T
A
= 10 µF
= 25°C
o
–10
2
1.5 1.75
2
2.25 2.5 2.75
3
3.25 3.5
0
20 40 60 80 100 120 140 160 180 200
V
O
– Output Voltage – V
t – Time – µs
Figure 14
Figure 15
TPS77x15
TPS77x33
LOAD TRANSIENT RESPONSE
LINE TRANSIENT RESPONSE
C
= 2x47 µF
o
C
T
= 10 µF
= 25°C
o
A
ESR = 1/2x100 mΩ
50
0
V
V
= 1.5 V
= 2.7 V
O
IN
5.3
–50
4.3
10
500
0
0
–10
0
20 40 60 80 100 120 140 160 180 200
0
20 40 60 80 100 120 140 160 180 200
t – Time – µs
t – Time – µs
Figure 16
Figure 17
12
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TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
TYPICAL CHARACTERISTICS
TPS77x33
OUTPUT VOLTAGE
TPS77x33
vs
LOAD TRANSIENT RESPONSE
TIME (AT STARTUP)
4
C
= 2x47 µF
o
C
= 10 µF
= 500 mA
= 25°C
o
ESR = 1/2x100 mΩ
= 3.3 V
I
T
50
0
O
3
2
V
O
A
V = 4.3 V
I
–50
1
0
500
0
0
20 40 60 80 100 120 140 160 180 200
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
t – Time – µs
t – Time – ms
Figure 18
Figure 19
To Load
IN
V
I
OUT
+
R
L
C
o
R
EN
GND
ESR
Figure 20. Test Circuit for Typical Regions of Stability (Figures 21 through 24) (Fixed Output Options)
13
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TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
TYPICAL CHARACTERISTICS
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
†
†
OUTPUT CURRENT
OUTPUT CURRENT
10
10
Region of Instability
Region of Instability
1
1
Region of Stability
Region of Stability
V
C
= 3.3 V
= 4.7 µF
O
o
V
= 3.3 V
O
C
= 4.7 µF
o
V = 4.3 V
I
A
V = 4.3 V
I
J
T
= 25°C
T
= 125°C
0.1
0.1
0
100
200
300
400
500
0
100
I
200
300
400
500
I
O
– Output Current – mA
– Output Current – mA
O
Figure 21
Figure 22
TYPICAL REGION OF STABILITY
TYPICAL REGION OF STABILITY
†
†
EQUIVALENT SERIES RESISTANCE
EQUIVALENT SERIES RESISTANCE
vs
vs
OUTPUT CURRENT
OUTPUT CURRENT
10
10
Region of Instability
Region of Instability
1
1
Region of Stability
Region of Stability
V
C
= 3.3 V
= 22 µF
O
o
V
= 3.3 V
O
C
= 22 µF
o
V = 4.3 V
I
A
V = 4.3 V
I
J
T
= 25°C
T
= 125°C
0.1
0.1
0
100
200
300
400
500
0
100
200
300
400
500
I
O
– Output Current – mA
I
O
– Output Current – mA
Figure 23
Figure 24
†
Equivalent series resistance (ESR) refers to the total series resistance, including the ESR of the capacitor, any series resistance added
externally, and PWB trace resistance to C .
o
14
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TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
APPLICATION INFORMATION
The TPS775xx family includes five fixed-output voltage regulators (1.5 V, 1.6 V, 1.8 V, 2.5 V, and 3.3 V), and
an adjustable regulator, the TPS77501 (adjustable from 1.5 V to 5.5 V).
The TPS776xx family includes five fixed-output voltage regulators (1.5 V, 1.8 V, 2.5 V, 2.8 V, and 3.3 V), and
an adjustable regulator, the TPS77601 (adjustable from 1.2 V to 5.5 V).
device operation
The TPS775xx and TPS776xx feature very low quiescent current, which remains virtually constant even with
varying loads. Conventional LDO regulators use a pnp pass element, the base current of which is directly
proportional to the load current through the regulator (I = I /β). The TPS775xx and TPS776xx use a PMOS
B
C
transistor to pass current; because the gate of the PMOS is voltage driven, operating current is low and
invariable over the full load range.
Another pitfall associated with the pnp-pass element is its tendency to saturate when the device goes into
dropout. The resulting drop in β forces an increase in I to maintain the load. During power up, this translates
B
to large start-up currents. Systems with limited supply current may fail to start up. In battery-powered systems,
it means rapid battery discharge when the voltage decays below the minimum required for regulation. The
TPS775xx and TPS776xx quiescent currents remain low even when the regulator drops out, eliminating both
problems.
The TPS775xx and TPS776xx families also feature a shutdown mode that places the output in the
high-impedance state (essentially equal to the feedback-divider resistance) and reduces quiescent current to
2 µA. If the shutdown feature is not used, EN should be tied to ground.
minimum load requirements
The TPS775xx and TPS776xx families are stable even at zero load; no minimum load is required for operation.
FB—pin connection (adjustable version only)
The FB pin is an input pin to sense the output voltage and close the loop for the adjustable option . The output
voltage is sensed through a resistor divider network to close the loop as it is shown in Figure 26. Normally, this
connection should be as short as possible; however, the connection can be made near a critical circuit to
improve performance at that point. Internally, FB connects to a high-impedance wide-bandwidth amplifier and
noise pickup feeds through to the regulator output. Routing the FB connection to minimize/avoid noise pickup
is essential.
external capacitor requirements
An input capacitor is not usually required; however, a ceramic bypass capacitor (0.047 µF or larger) improves
load transient response and noise rejection if the TPS775xx or TPS776xx are located more than a few inches
from the power supply. A higher-capacitance electrolytic capacitor may be necessary if large (hundreds of
milliamps) load transients with fast rise times are anticipated.
Like all low dropout regulators, the TPS775xx and TPS776xx require an output capacitor connected between
OUT and GND to stabilize the internal control loop. The minimum recommended capacitance value is 10 µF
and the ESR (equivalent series resistance) must be between 50 mΩ and 1.5 Ω. Capacitor values 10 µF or larger
are acceptable, provided the ESR is less than 1.5 Ω. Solid tantalum electrolytic, aluminum electrolytic, and
multilayer ceramic capacitors are all suitable, provided they meet the requirements described previously.
15
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TPS77501-Q1, ’515-Q1, ’516-Q1, ’518-Q1, ’525-Q1, ’533-Q1 WITH RESET OUTPUT
TPS77601-Q1, ’77615-Q1, ’77618-Q1, ’77625-Q1, ’77628-Q1, ’77633-Q1 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
APPLICATION INFORMATION
external capacitor requirements (continued)
6
7
16
RESET/PG
RESET/
PG
V
I
IN
IN
250 kΩ
14
13
V
OUT
OUT
O
C1
0.1 µF
5
EN
C
+
o
10 µF
GND
3
Figure 25. Typical Application Circuit (Fixed Versions)
programming the TPS77x01 adjustable LDO regulator
The output voltage of the TPS77x01 adjustable regulator is programmed using an external resistor divider as
shown in Figure 26. The output voltage is calculated using:
R1
R2
ǒ1 )
Ǔ
(1)
V
+ V
O
ref
Where:
V
= 1.1834 V typ (the internal reference voltage)
ref
Resistors R1 and R2 should be chosen for approximately 10-µA divider current. Lower value resistors can be
used but offer no inherent advantage and waste more power. Higher values should be avoided as leakage
currents at FB increase the output voltage error. The recommended design procedure is to choose
R2 = 110 kΩ to set the divider current at approximately 10 µA and then calculate R1 using:
V
O
R1 +
ǒ
* 1
Ǔ
R2
(2)
V
ref
OUTPUT VOLTAGE
PROGRAMMING GUIDE
TPS77x01
OUTPUT
VOLTAGE
R1
121
R2
110
UNIT
RESET/
Reset or PG Output
250 kΩ
V
I
IN
PG
0.1 µF
2.5 V
3.3 V
kΩ
kΩ
kΩ
kΩ
≥ 1.7 V
196
226
332
110
110
110
EN
OUT
V
O
3.6 V
≤ 0.9 V
R1
4.75 V
C
o
FB / NC
GND
R2
Figure 26. TPS77x01 Adjustable LDO Regulator Programming
16
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FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
APPLICATION INFORMATION
reset indicator
The TPS775xx features a RESET output that can be used to monitor the status of the regulator. The internal
comparator monitors the output voltage: when the output drops to between 92% and 98% of its nominal
regulated value, the RESET output transistor turns on, taking the signal low. The open-drain output requires
a pullup resistor. If not used, it can be left floating. RESET can be used to drive power-on reset circuitry or as
a low-battery indicator. RESET does not assert itself when the regulated output voltage falls outside the
specified 2% tolerance, but instead reports an output voltage low relative to its nominal regulated value (refer
to timing diagram for start-up sequence).
power-good indicator
The TPS776xx features a power-good (PG) output that can be used to monitor the status of the regulator. The
internal comparator monitors the output voltage: when the output drops to between 92% and 98% of its nominal
regulated value, the PG output transistor turns on, taking the signal low. The open-drain output requires a pullup
resistor. If not used, it can be left floating. PG can be used to drive power-on reset circuitry or used as a
low-battery indicator.
regulator protection
TheTPS775xxandTPS776xxPMOS-passtransistorshaveabuilt-inbackdiodethatconductsreversecurrents
when the input voltage drops below the output voltage (e.g., during power down). Current is conducted from
the output to the input and is not internally limited. When extended reverse voltage is anticipated, external
limiting may be appropriate.
The TPS775xx and TPS776xx also feature internal current limiting and thermal protection. During normal
operation, the TPS775xx and TPS776xx limit output current to approximately 1.7 A. When current limiting
engages, the output voltage scales back linearly until the overcurrent condition ends. While current limiting is
designed to prevent gross device failure, care should be taken not to exceed the power dissipation ratings of
the package. If the temperature of the device exceeds 150°C(typ), thermal-protection circuitry shuts it down.
Once the device has cooled below 130°C(typ), regulator operation resumes.
17
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FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
APPLICATION INFORMATION
power dissipation and junction temperature
Specified regulator operation is assured to a junction temperature of 125°C; the maximum junction temperature
should be restricted to 125°C under normal operating conditions. This restriction limits the power dissipation
the regulator can handle in any given application. To ensure the junction temperature is within acceptable limits,
calculate the maximum allowable dissipation, P
, and the actual dissipation, P , which must be less than
D(max)
D
or equal to P
.
D(max)
The maximum-power-dissipation limit is determined using the following equation:
T max * T
J
A
P
+
D(max)
R
qJA
Where:
T max is the maximum allowable junction temperature.
J
R
is the thermal resistance junction-to-ambient for the package, i.e., 32.6°C/W for the 20-terminal
θJA
PWP with no airflow.
T is the ambient temperature.
A
The regulator dissipation is calculated using:
+ ǒVI * V
Ǔ
P
I
D
O
O
Power dissipation resulting from quiescent current is negligible. Excessive power dissipation will trigger the
thermal protection circuit.
18
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FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SGLS012 – MARCH 2003
MECHANICAL DATA
PWP (R-PDSO-G**)
PowerPAD PLASTIC SMALL-OUTLINE
20 PINS SHOWN
0,30
0,19
0,65
20
M
0,10
11
Thermal Pad
(See Note D)
0,15 NOM
4,50
4,30
6,60
6,20
Gage Plane
1
10
0,25
A
0°–ā8°
0,75
0,50
Seating Plane
0,10
0,15
0,05
1,20 MAX
PINS **
14
16
20
24
28
DIM
5,10
4,90
5,10
4,90
6,60
6,40
7,90
7,70
9,80
9,60
A MAX
A MIN
4073225/F 10/98
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusions.
D. The package thermal performance may be enhanced by bonding the thermal pad to an external thermal plane.
This pad is electrically and thermally connected to the backside of the die and possibly selected leads.
E. Falls within JEDEC MO-153
PowerPAD is a trademark of Texas Instruments Incorporated.
19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
MHTS001D – JANUARY 1995 – REVISED MAY 1999
PWP (R-PDSO-G**)
PowerPAD PLASTIC SMALL-OUTLINE
20 PINS SHOWN
0,30
0,19
0,65
20
M
0,10
11
Thermal Pad
(See Note D)
0,15 NOM
4,50
4,30
6,60
6,20
Gage Plane
1
10
0,25
A
0°–ā8°
0,75
0,50
Seating Plane
0,10
0,15
0,05
1,20 MAX
PINS **
14
16
20
24
28
DIM
5,10
4,90
5,10
4,90
6,60
6,40
7,90
7,70
9,80
9,60
A MAX
A MIN
4073225/F 10/98
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusions.
D. The package thermal performance may be enhanced by bonding the thermal pad to an external thermal plane.
This pad is electrically and thermally connected to the backside of the die and possibly selected leads.
E. Falls within JEDEC MO-153
PowerPAD is a trademark of Texas Instruments Incorporated.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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TI warrants performance of its hardware products to the specifications applicable at the time of sale in
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TI assumes no liability for applications assistance or customer product design. Customers are responsible for
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Copyright 2003, Texas Instruments Incorporated
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TI
TPS77501_15
TPS775xx with RESET Output, TPS776xx with PG Output FAST-TRANSIENT-RESPONSE 500mA LOW-DROPOUT VOLTAGE REGULATORS
TI
TPS77515-EP
TPS775xx with RESET Output, TPS776xx with PG Output FAST-TRANSIENT-RESPONSE 500mA LOW-DROPOUT VOLTAGE REGULATORS
TI
TPS77515-Q1
TPS775xx with RESET Output, TPS776xx with PG Output FAST-TRANSIENT-RESPONSE 500mA LOW-DROPOUT VOLTAGE REGULATORS
TI
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