TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
D
D
D
D
D
D
D
D
D
D
DBV PACKAGE
(TOP VIEW)
150-mA Low Noise, Low-Dropout Regulator
Output Voltage: 2.5 V, 2.7 V, 2.8 V, 3.0 V, 3.3 V
Output Noise Typically 50 µV
Quiescent Current Typically 85 µA
Dropout Voltage, Typically 300 mV
at 150 mA
Thermal Protection
Over Current Limitation
Less Than 2-µA Quiescent Current in
Shutdown Mode
–40°C to 125°C Operating Junction
Temperature Range
5-Pin SOT-23 (DBV) Package
IN
1
GND
2
EN
3
5
OUT
4
BYPASS
description
The TPS764xx family of low-dropout (LDO) voltage regulators offers the benefits of a low noise, low-dropout
voltage, low-power operation, and miniaturized package. Additionally, they feature low quiescent current when
compared to conventional LDO regulators. Offered in 5-terminal small outline integrated-circuit SOT-23
package, the TPS764xx series devices are ideal for low-noise applications, cost-sensitive designs and
applications where board space is at a premium.
A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be
replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the
dropout voltage is very low—typically 300 mV at 150 mA of load current (TPS76433)—and is directly
proportional to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current
is very low (140 µA maximum) and is stable over the entire range of output load current (0 mA to 150 mA).
Intended for use in portable systems such as laptops and cellular phones, the low-dropout voltage feature and
low-power operation result in a significant increase in system battery operating life.
The TPS764xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current
to 1 µA maximum at TJ = 25°C.The TPS764xx is offered in 2.5-V, 2.7-V, 2.8-V, 3.0-V, and 3.3-V fixed-voltages.
AVAILABLE OPTIONS
TJ
VOLTAGE
PACKAGE
2.5 V
2.7 V
–40°C to 125°C
SOT-23
SOT
23
(DBV)
PART NUMBER
TPS76425DBVT†
TPS76425DBVR‡
TPS76427DBVT†
TPS76427DBVR‡
SYMBOL
PBJI
PBKI
TPS76428DBVR‡
TPS76430DBVR‡
PCEI
3.0 V
TPS76428DBVT†
TPS76430DBVT†
3.3 V
TPS76433DBVT†
TPS76433DBVR‡
PBMI
2.8 V
PBLI
† The DBVT passive indicates tape and reel of 250 parts.
‡ The DBVR passive indicates tape and reel of 3000 parts.
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.
Copyright 2001, 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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
functional block diagram
TPS76425/ 27/ 28/ 30/ 33
OUT
IN
EN
Current Limit
/ Thermal
Protection
BYPASS
VREF
GND
Terminal Functions
TERMINAL
NAME
I/O
GND
DESCRIPTION
Ground
EN
I
BYPASS
Enable input
Output bypass capacitor
IN
I
Input supply voltage
OUT
O
Regulated output voltage
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)Ĕ
Input voltage range (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to 10 V
Voltage range at EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to VI + 0.3 V
Voltage on OUT, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Peak output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited
ESD rating, HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See dissipation rating tables
Operating virtual junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 150°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
† 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.
NOTE 1: All voltage values are with respect to network ground terminal.
DISSIPATION RATING TABLE
BOARD
PACKAGE
RθJC
RθJA
DERATING FACTOR
ABOVE TA = 25°C
TA ≤ 25°C
POWER RATING
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
Low K‡
High K§
DBV
65.8 °C/W
259 °C/W
3.9 mW/°C
386 mW
212 mW
154 mW
DBV
65.8 °C/W
180 °C/W
5.6 mW/°C
555 mW
305 mW
222 mW
‡ 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.
§ 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.
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
recommended operating conditions
MIN
Input voltage, VI†
Continuous output current, IO
Operating junction temperature, TJ
NOM
MAX
UNIT
2.7
10
V
0
150
mA
–40
125
°C
† To calculate the minimum input voltage for your maximum output current, use the following equation: VI(min) = VO(max) + VDO(max load)
electrical characteristics over recommended operating free-air temperature range,
VI = VO(typ) + 1 V, IO= 1 mA, EN = IN, Co = 4.7 µF (unless otherwise noted)
PARAMETER
TEST CONDITIONS
mA
IO = 1 mA to 100 mA,
TPS76425
IO = 1 mA to 100 mA
IO = 1 mA to 150 mA,
IO = 1 mA to 150 mA
IO = 1 mA to 100 mA,
TPS76427
VO
Output
Out
ut voltage
TPS76428
TPS76430
TPS76433
I(Q)
Quiescent current
(GND terminal current)
Standby current
Vn
Output noise voltage
Bypass voltage
PSRR
Ripple rejection
TJ = 25°C
TJ = 25°C
TJ = 25°C
IO = 1 mA to 100 mA
IO = 1 mA to 150 mA,
TJ = 25°C
IO = 1 mA to 150 mA
IO = 1 mA to 100 mA
TJ = 25°C
IO = 1 mA to 150 mA,
IO = 1 mA to 150 mA,
TJ = 25°C
IO = 1 mA to 150 mA
IO = 1 mA to 100 mA,
TJ = 25°C
IO = 1 mA to 100 mA
IO = 1 mA to 150 mA,
TJ = 25°C
IO = 1 mA to 150 mA
IO = 1 mA to 100 mA,
TJ = 25°C
IO = 1 mA to 100 mA
IO = 1 mA to 150 mA,
IO = 1 mA to 150 mA
IO = 0 to 150 mA,
See Note 2
IO = 0 to 150 mA,
EN < 0.5 V,
TJ = 25°C
TJ = 25°C,
MIN
TYP
2 45
2.45
25
2.5
2 55
2.55
2.425
2.5
2.575
2.438
2.5
2.562
2.407
2.5
2.593
2.646
2.7
2.754
2.619
2.7
2.781
2.632
2.7
2.768
2.598
2.7
2.8013
2.744
2.8
2.856
2.73
2.8
2.870
2.716
2.8
2.884
2.695
2.8
2.905
2.94
3.0
3.06
2.925
3.0
3.075
2.91
3.0
3.090
2.887
3.0
3.112
3.234
3.3
3.366
3.201
3.3
3.399
3.218
3.3
3.382
3.177
3.3
3.423
85
100
See Note 2
TJ = 25°C
140
0.5
EN < 0.5 V
BW = 300 Hz to 50 kHz,
TJ = 25°C,
TJ = 25°C
f = 1 kHz, Co = 10 µF,
UNIT
V
V
V
V
V
µA
µ
1
2
Co = 10 µF,
See Note 2
TJ = 25°C, See Note 2
See Note 3
Current limit
TJ = 25°C
NOTES: 2. Minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater.
3. Test condition includes, output voltage VO=0 V and pulse duration = 10 mS.
POST OFFICE BOX 655303
MAX
• DALLAS, TEXAS 75265
µV
50
1.192
V
60
dB
0.8
1.5
A
3
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
electrical characteristics over recommended operating free-air temperature range,
VI = VO(typ) + 1 V, IO= 1 mA, EN = IN, Co = 4.7 µF (unless otherwise noted) (continued)
PARAMETER
TEST CONDITIONS
Output voltage
g line regulation
g
((∆VO/VO)
(see Note 4)
VO + 1 V < VI ≤ 10 V,
VO + 1 V < VI ≤ 10 V,
VIH
VIL
EN high level input
See Note 2
EN low level input
See Note 2
II
EN input current
TPS76425
VDO
Dropout voltage (see Note 5)
TPS76433
MAX
0.04
0.07
1.4
2
1.2
EN = 0 V
–0.01
–0.5
EN = IN
–0.01
–0.5
IO = 0 mA,
IO = 1 mA,
TJ = 25°C
TJ = 25°C
0.2
IO = 50 mA,
IO = 50 mA
TJ = 25°C
120
IO = 75 mA,
IO = 75 mA
TJ = 25°C
IO = 100 mA,
IO = 100 mA
TJ = 25°C
240
IO = 150 mA,
IO = 150 mA
TJ = 25°C
360
IO = 0 mA,
IO = 1 mA,
TJ = 25°C
TJ = 25°C
0.2
IO = 50 mA,
IO = 50 mA
TJ = 25°C
100
IO = 75 mA,
IO = 75 mA
TJ = 25°C
150
IO = 100 mA,
IO = 100 mA
TJ = 25°C
IO = 150 mA,
IO = 150 mA
TJ = 25°C
+ ǒ%ńVǓ
+ ǒ%ńVǓ
UNIT
%/V
V
µA
3
150
200
180
225
300
mV
300
400
450
600
3
125
166
188
250
200
mV
250
333
300
375
500
V
O
If VO > 2.5 V and VImax = 10 V, VImin = VO + 1 V:
Line Reg. (mV)
TYP
0.1
0.5
NOTES: 2. Minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater.
4. If VO < 2.5 V and VImax = 10 V, VImin = 3.5 V:
Line Reg. (mV)
MIN
VI ≥ 3.5 V, TJ = 25°C
VI ≥ 3.5 V
V
O
ǒ
V
ǒ
* 3.5 V
Imax
100
V
*
Ǔ
1000
ǒ ) ǓǓ
Imax
100
V
O
1
1000
5. Dropout voltage is defined as the differential voltage between VO and VI when VO drops 100 mV below the value measured with
VI = VO + 1.0 V.
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
VO
Output voltage
Vn
Output noise
vs Output current
1
vs Free-air temperature
2, 3, 4
vs Frequency
5
vs Bypass capacitance
6
vs Load current
7
8
Vn
Output noise voltage
Zo
VDO
Output impedance
vs Frequency
Dropout voltage
vs Free-air temperature
9
Ripple rejection
vs Frequency
10
Line transient response
11, 13
Load transient response
12, 14
Compensation series resistance (CSR)
vs Output current
15, 17
vs Added ceramic capacitance
16, 18
TPS76425
TPS76425
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
2.505
2.53
2.52
VO – Output Voltage – V
2.5
VO – Output Voltage – V
VI = 3.5 V
CI = CO = 4.7 µF
VI = 3.5 V
CI = CO = 4.7 µF
TA = 25°C
2.495
2.49
2.485
2.48
2.51
IO = 1 mA
2.5
2.49
IO = 150 mA
2.48
2.475
0
60
120
150
30
90
IO – Output Current – mA (Pulse Tested)
180
2.47
–55 –35
–15
5
25
45
65
85
105
125
TA – Free-Air Temperature – °C
Figure 1
Figure 2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
TYPICAL CHARACTERISTICS
TPS76425
TPS76433
GROUND CURRENT
vs
FREE-AIR TEMPERATURE
OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
1000
3.34
VI = 4.3 V
VI = 6 V
CI = CO = 4.7 µF
IO = 0 mA and 150 mA
3.33
VO – Output Voltage – V
Ground Current – µ A
3.32
100
3.31
IO = 1 mA
3.3
3.29
3.28
IO = 150 mA
3.27
10
–55 –35
–15
5
25
45
65
85
105
125
3.26
–55 –35
OUTPUT NOISE
vs
FREQUENCY
80
CO = 1 µF
IO = 1 mA
Vn – Output Noise Voltage – µ V
Output Noise – µV/ Hz
3.3
CO = 10 µF
IO = 150 mA
CO = 1 µF
IO = 150 mA
0.033
VO = 3.3 V
C(BYPASS) = 0.1 µF
TA = 25°C
0
100
1.1 k
5
25
45
65
CO = 10 µF
IO = 1 mA
105
125
10.1 k
70
OUTPUT NOISE VOLTAGE
vs
BYPASS CAPACITANCE
CO = 10 µF
IO = 150 mA
f = 10 Hz to 100 kHz
TA = 25°C
60
50
40
30
100.1 k
f – Frequency – Hz
20
10–3
10–2
Bypass Capacitance – µF
Figure 6
Figure 5
6
85
Figure 4
Figure 3
0.33
–15
TA – Free-Air Temperature – °C
TA – Free-Air Temperature – °C
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
10–1
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
TYPICAL CHARACTERISTICS
OUTPUT NOISE VOLTAGE
vs
LOAD CURRENT
70
OUTPUT IMPEDANCE
vs
FREQUENCY
60
Zo – Output Impedance – Ω
Vn – Output Noise Voltage – µ V
10
50
40
30
VO = 2.5 V
CO = 10 µF
f = 10 Hz to 100 kHz
TA = 25°C
20
10
101
0
IO = 1 mA
1
IO = 150 mA
CI = CO = 4.7 µF
ESR = 1 Ω
TA = 25°C
102
0.1
0.01
Load Current – mA
0.1
1
100
1000
f – Frequency – kHz
Figure 7
Figure 8
TPS76425
TPS76425
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
RIPPLE REJECTION
vs
FREQUENCY
100
600
VI = EN = 2.7 V
CI = CO = 4.7 µF
90
500
80
Ripple Rejection – dB
VDO – Dropout Voltage – mV
10
150 mA
400
300
200
VO = 2.5 V
C(BYPASS) = 0.01 µF
CL = 10 µF
70
IO = 1 mA
60
50
IO = 150 mA
40
30
1 mA
0 mA
20
100
10
0
–55 –35
–15
5
25
45
65
85
105
125
0
10
100
TA – Free-Air Temperature – °C
1k
10 k
100 k
1M
10 M
f – Frequency – Hz
Figure 10
Figure 9
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
7
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
TYPICAL CHARACTERISTICS
TPS76425
LINE TRANSIENT RESPONSE
TPS76425
LOAD TRANSIENT RESPONSE
200 mA
TA = 25°C
TA = 25°C
6V
100 mA
0 mA
4.7 V
50 mV
50 mV
0
0
–50 mV
–50 mV
–100 mV
0
20
40
60
0
80 100 120 140 160 180 200
t – Time – µs
20
40
60
80 100 120 140 160 180 200
t – Time – µs
Figure 12
Figure 11
TPS76433
LINE TRANSIENT RESPONSE
TPS76433
LOAD TRANSIENT RESPONSE
200 mA
TA = 25°C
TA = 25°C
6V
100 mA
4.7 V
0
100 mV
50 mV
50 mV
0
0
–50 mV
–50 mV
–100 mV
dv
dt
0
20
+ 101 µVs
40
60
–150 mV
80 100 120 140 160 180 200
t – Time – µs
0
20
60
80 100 120 140 160 180 200
t – Time – µs
Figure 14
Figure 13
8
40
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
TYPICAL CHARACTERISTICS
TYPICAL REGIONS OF STABILITY
TYPICAL REGIONS OF STABILITY
COMPENSATION SERIES RESISTANCE (CSR)†
vs
OUTPUT CURRENT
COMPENSATION SERIES RESISTANCE (CSR)†
vs
ADDED CERAMIC CAPACITANCE
100
CSR – Compensation Series Resistance – Ω
CSR – Compensation Series Resistance – Ω
100
Region of Instability
10
CO = 4.7 µF
TA = 25°C
1
0.1
Region of Instability
0.01
Region of Instability
10
I = 150 mA
CO = 4.7 µF
TA = 25°C
1
0.1
Region of Instability
0.01
0
50
100
150
200
0
250
0.1
0.2 0.3 0.4 0.5
0.9
1
Added Ceramic Capacitance – µF
IO – Output Current – mA
Figure 15
Figure 16
TYPICAL REGIONS OF STABILITY
TYPICAL REGIONS OF STABILITY
COMPENSATION SERIES RESISTANCE (CSR)†
vs
OUTPUT CURRENT
COMPENSATION SERIES RESISTANCE (CSR)†
vs
ADDED CERAMIC CAPACITANCE
100
CSR – Compensation Series Resistance – Ω
100
CSR – Compensation Series Resistance – Ω
0.6 0.7 0.8
Region of Instability
10
CO = 10 µF
1
0.1
Region of Instability
0.01
Region of Instability
10
CO = 10 µF
1
0.1
Region of Instability
0.01
0
50
100
150
200
250
IO – Output Current – mA
0
0.1
0.2 0.3 0.4 0.5
0.6 0.7 0.8
0.9
1
Added Ceramic Capacitance – µF
Figure 17
Figure 18
† CSR refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance
to CO.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
9
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
APPLICATION INFORMATION
The TPS764xx family of low-noise and low-dropout (LDO) regulators are optimized for use in battery-operated
equipment. They feature extremely low noise (50 µV), low dropout voltages, low quiescent current (140 µA),
and an enable input to reduce supply current to less than 2 µA when the regulator is turned off.
device operation
The TPS764xx uses a PMOS pass element to dramatically reduce both dropout voltage and supply current over
more conventional PNP-pass-element LDO designs. The PMOS pass element is a voltage-controlled device
which, unlike a PNP transistor, does not require increased drive current as output current increases. Supply
current in the TPS764xx is essentially constant from no-load to maximum load.
Current limiting and thermal protection prevent damage by excessive output current and/or power dissipation.
The device switches into a constant-current mode at approximately 1 A; further load reduces the output voltage
instead of increasing the output current. The thermal protection shuts the regulator off if the junction temperature
rises above 165°C. Recovery is automatic when the junction temperature drops approximately 25°C below the
high temperature trip point. The PMOS pass element includes a back diode that safely conducts reverse current
when the input voltage level drops below the output voltage level.
An internal resistor, in conjunction with external 0.01-µF bypass capacitor, creates a low-pass filter to further
reduce the noise. The TPS764xx exhibits only 50 µV of output voltage noise using 0.01 µF bypass and 4.7-µF
output capacitors.
A logic low on the enable input, EN, shuts off the output and reduces the supply current to less than 2 µA. EN
should be tied high in applications where the shutdown feature is not used.
A typical application circuit is shown in Figure 19.
TPS764xx†
VI
C1
1 µF
1
IN
OUT 5
BYPASS
3
VO
4
EN
+
0.01 µF
GND
2
† TPS76425, TPS76427 TPS76430, TPS76433.
Figure 19. Typical Application Circuit
10
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
+
4.7 µF
CSR = 1 Ω
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
APPLICATION INFORMATION
external capacitor requirements
Although not required, a 0.047-µF or larger ceramic bypass input capacitor, connected between IN and GND
and located close to the TPS764xx, is recommended to improve transient response and noise rejection. A
higher-value electrolytic input capacitor may be necessary if large, fast-rise-time load transients are anticipated
and the device is located several inches from the power source.
Like all low dropout regulators, the TPS764xx requires an output capacitor connected between OUT and GND
to stabilize the internal loop control. The minimum recommended capacitance value is 4.7 µF and the ESR
(equivalent series resistance) must be between 0.2 Ω and 10 Ω. Capacitor values 4.7 µF or larger are
acceptable, provided the ESR is less than 10 Ω. Solid tantalum electrolytic, aluminum electrolytic, and multilayer
ceramic capacitors are all suitable, provided they meet the requirements described above. Most of the
commercially available 4.7 µF surface-mount solid tantalum capacitors, including devices from Sprague,
Kemet, and Nichico, meet the ESR requirements previously stated. Multilayer ceramic capacitors should have
minimum values of 1 µF over the full operating temperature range of the equipment.
CAPACITOR SELECTION
MFR.
VALUE
MAX ESR†
SIZE (H × L × W)†
T494B475K016AS
KEMET
4.7 µF
1.5 Ω
1.9 × 3.5 × 2.8
195D106x0016x2T
SPRAGUE
10 µF
1.5 Ω
1.3 × 7.0 × 2.7
695D106x003562T
SPRAGUE
10 µF
1.3 Ω
2.5 × 7.6 × 2.5
PART NO.
TPSC475K035R0600
AVX
4.7 µF
0.6 Ω
2.6 × 6.0 × 3.2
† Size is in mm. ESR is maximum resistance in ohms at 100 kHz and TA = 25°C. Listings are sorted by height.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
11
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
APPLICATION INFORMATION
power dissipation and junction temperature
Specified regulator operation is assured to a junction temperature of 125°C; the maximum junction temperature
allowable without damaging the device is 150°C. 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, PD(max), and the actual dissipation, PD, which must be less than or equal to
PD(max).
The maximum-power-dissipation limit is determined using the following equation:
P
T max * T
J
A
+
D(max)
R
qJA
Where:
TJmax is the maximum allowable junction temperature
RθJA is the thermal resistance junction-to-ambient for the package, see the dissipation rating table.
TA is the ambient temperature.
ǒ
Ǔ
The regulator dissipation is calculated using:
P
D
+ VI * VO
I
O
Power dissipation resulting from quiescent current is negligible.
regulator protection
The TPS764xx pass element has a built-in back diode that safely conducts reverse current 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. If extended reverse voltage is anticipated, external limiting might be
appropriate.
The TPS764xx also features internal current limiting and thermal protection. During normal operation, the
TPS764xx limits output current to approximately 800 mA. 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 165°C, thermal-protection circuitry shuts it down. Once the device has
cooled down to below 140°C, regulator operation resumes.
12
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180B – MARCH 1999 – REVISED MAY 2001
MECHANICAL DATA
DBV (R-PDSO-G5)
PLASTIC SMALL-OUTLINE
0,50
0,30
0,95
5
0,20 M
4
1,70
1,50
1
0,15 NOM
3,00
2,60
3
Gage Plane
3,00
2,80
0,25
0°–8°
0,55
0,35
Seating Plane
1,45
0,95
0,05 MIN
0,10
4073253-4/F 10/00
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion.
Falls within JEDEC MO-178
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
13
PACKAGE OPTION ADDENDUM
www.ti.com
14-Oct-2022
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
TPS76425DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
PBJI
Samples
TPS76425DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
PBJI
Samples
TPS76427DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
PBKI
Samples
TPS76427DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
PBKI
Samples
TPS76428DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
PCEI
Samples
TPS76428DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
PCEI
Samples
TPS76430DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
PBLI
Samples
TPS76430DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
PBLI
Samples
TPS76433DBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PBMI
Samples
TPS76433DBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 125
PBMI
Samples
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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