TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
D
D
D
D
D
D
D
D
D OR P PACKAGE
(TOP VIEW)
Available in 5-V, 4.85-V, and 3.3-V
Fixed-Output and Adjustable Versions
Very Low-Dropout Voltage . . . Maximum of
32 mV at IO = 100 mA (TPS7150)
Very Low Quiescent Current – Independent
of Load . . . 285 µA Typ
Extremely Low Sleep-State Current
0.5 µA Max
2% Tolerance Over Specified Conditions
For Fixed-Output Versions
Output Current Range of 0 mA to 500 mA
TSSOP Package Option Offers Reduced
Component Height for Space-Critical
Applications
Power-Good (PG) Status Output
GND
EN
IN
IN
8
2
7
3
6
4
5
PG
SENSE†/FB‡
OUT
OUT
PW PACKAGE
(TOP VIEW)
GND
GND
GND
NC
NC
EN
NC
IN
IN
IN
description
The TPS71xx integrated circuits are a family
of micropower low-dropout (LDO) voltage
regulators. An order of magnitude reduction in
dropout voltage and quiescent current over
conventional LDO performance is achieved by
replacing the typical pnp pass transistor with a
PMOS device.
1
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
PG
NC
NC
FB‡
NC
SENSE†
OUT
OUT
NC
NC
NC – No internal connection
† SENSE – Fixed voltage options only
(TPS7133, TPS7148, and TPS7150)
‡ FB – Adjustable version only (TPS7101)
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (maximum of 32
mV at an output current of 100 mA for the TPS7150) and is directly proportional to the output current (see
Figure 1). Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very
low and remains independent of output loading (typically 285 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. The LDO family also features a sleep mode; applying a TTL high signal to EN (enable) shuts down
the regulator, reducing the quiescent current to 0.5 µA maximum at TJ = 25°C.
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 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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
description (continued)
0.25
TA = 25°C
Dropout Voltage – V
0.2
0.15
TPS7133
TPS7148
0.1
TPS7150
0.05
0
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
IO – Output Current – A
Figure 1. Dropout Voltage Versus Output Current
Power good (PG) reports low output voltage and can be used to implement a power-on reset or a low-battery
indicator.
The TPS71xx is offered in 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable version
(programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2%
over line, load, and temperature ranges (3% for adjustable version). The TPS71xx family is available in PDIP
(8 pin), SO (8 pin), and TSSOP (20-pin) packages. The TSSOP has a maximum height of 1,2 mm.
AVAILABLE OPTIONS
TJ
OUTPUT VOLTAGE
(V)
MIN
– 40°C to 125°C
TYP
MAX
PACKAGED DEVICES
SMALL OUTLINE
(D)
PLASTIC DIP
(P)
TSSOP
(PW)
CHIP FORM
(Y)
4.9
5
5.1
TPS7150QD
TPS7150QP
TPS7150QPW
TPS7150Y
4.75
4.85
4.95
TPS7148QD
TPS7148QP
TPS7148QPW
TPS7148Y
3.3
3.37
Adjustable†
1.2 V to 9.75 V
TPS7133QD
TPS7133QP
TPS7133QPW
TPS7133Y
TPS7101QD
TPS7101QP
TPS7101QPW
TPS7101Y
3.23
† The D and PW packages are available taped and reeled. Add R suffix to device type (e.g., TPS7150QDR). The TPS7101Q is
programmable using an external resistor divider (see application information). The chip form is tested at 25°C.
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TPS71xx†
8
VI
IN
PG
9
PG
15
IN
SENSE
IN
OUT
10
0.1 µF
20
6
OUT
EN
14
VO
13
+
GND
1
2
3
CO ‡
10 µF
CSR
† TPS7133, TPS7148, TPS7150 (fixed-voltage options)
‡ Capacitor selection is nontrivial. See application information section
for details.
Figure 2. Typical Application Configuration
TPS71xx chip information
These chips, when properly assembled, display characteristics similar to the TPS71xxQ. Thermal compression
or ultrasonic bonding may be used on the doped aluminum bonding pads. The chips may be mounted with
conductive epoxy or a gold-silicon preform.
BONDING PAD ASSIGNMENTS
(5)
(5)
(4)
(6)
IN
EN
(3)
(2)
(6)
TPS71xx
(4)
(7)
SENSE§
FB¶
OUT
PG
(1)
(7)
GND
CHIP THICKNESS: 15 MILS TYPICAL
80
BONDING PADS: 4 × 4 MILS MINIMUM
TJmax = 150°C
TOLERANCES ARE ± 10%.
ALL DIMENSIONS ARE IN MILS.
(3)
(1) (2)
§ SENSE – Fixed voltage options only (TPS7133, TPS7148,
and TPS7150)
¶ FB – Adjustable version only (TPS7101)
NOTE A: For most applications, OUT and SENSE should
be tied together as close as possible to the device;
for other implementations, refer to SENSE-pin
connection discussion in the Applications
Information section of this data sheet.
92
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
functional block diagram
IN
RESISTOR DIVIDER OPTIONS
†
†
EN
†
PG
_
DEVICE
R1
R2
UNIT
TPS7101
TPS7133
TPS7148
TPS7150
0
420
726
756
∞
233
233
233
Ω
kΩ
kΩ
kΩ
NOTE A: Resistors are nominal values only.
+
OUT
COMPONENT COUNT
1.12 V
SENSE‡ /FB
+
_
R1
Vref = 1.178 V
MOS transistors
Bilpolar transistors
Diodes
Capacitors
Resistors
464
41
4
17
76
R2
GND
† Switch positions are shown with EN low (active).
‡ For most applications, SENSE should be externally connected to OUT as close as possible to the device. For other implementations, refer to
SENSE-pin connection discussion in Applications Information section.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)§
Input voltage range¶, VI, PG, SENSE, EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to 11 V
Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 A
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Tables 1 and 2
Operating virtual junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 150°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°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.
¶ All voltage values are with respect to network terminal ground.
DISSIPATION RATING TABLE 1 – FREE-AIR TEMPERATURE (see Figure 3)#
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 125°C
POWER RATING
D
P
PW||
725 mW
1175 mW
700 mW
5.8 mW/
mW/°C
C
9.4 mW/°C
5.6 mW/°C
464 mW
752 mW
448 mW
145 mW
235 mW
140 mW
DISSIPATION RATING TABLE 2 – CASE TEMPERATURE (see Figure 4)#
PACKAGE
TC ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TC = 25°C
TC = 70°C
POWER RATING
TC = 125°C
POWER RATING
D
P
PW||
2188 mW
2738 mW
4025 mW
17.5 mW/°C
21 9 mW/°C
21.9
32.2 mW/°C
1400 mW
1752 mW
2576 mW
438 mW
548 mW
805 mW
# Dissipation rating tables and figures are provided for maintenance of junction temperature at or below
absolute maximum temperature of 150°C. For guidelines on maintaining junction temperature within
recommended operating range, see the Thermal Information section.
|| Refer to Thermal Information section for detailed power dissipation considerations when using the TSSOP packages.
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
DISSIPATION DERATING CURVE†
vs
FREE-AIR TEMPERATURE
DISSIPATION DERATING CURVE†
vs
CASE TEMPERATURE
4800
PD – Maximum Continuous Dissipation – mW
PD – Maximum Continuous Dissipation – mW
1400
1200
P Package
RθJA = 106°C/W
1000
800
D Package
RθJA = 172°C/W
600
400
PW and PWP
Package
RθJA = 178°C/W
200
0
25
50
75
100
125
150
4400
PW Package
RθJC = 31°C/W
4000
3600
P Package
RθJC = 46°C/W
3200
2800
2400
2000
1600
1200
800
D Package
RθJC = 57°C/W
400
0
25
TA – Free-Air Temperature – °C
50
75
125
100
150
TC – Case Temperature – °C
Figure 3
Figure 4
† Dissipation rating tables and figures are provided for maintenance of junction temperature at or below absolute maximum temperature of 150°C.
For guidelines on maintaining junction temperature within recommended operating range, see the Thermal Information section.
recommended operating conditions
Input voltage
voltage, VI‡
MIN
MAX
TPS7101Q
2.5
10
TPS7133Q
3.77
10
TPS7148Q
5.2
10
TPS7150Q
5.33
10
High-level input voltage at EN, VIH
2
Low-level input voltage at EN, VIL
Output current range, IO
0
UNIT
V
V
0.5
V
500
mA
Operating virtual junction temperature range, TJ
– 40
125
°C
‡ Minimum input voltage defined in the recommended operating conditions is the maximum specified output voltage plus dropout voltage at the
maximum specified load range. Since dropout voltage is a function of output current, the usable range can be extended for lighter loads. To
calculate the minimum input voltage for your maximum output current, use the following equation: VI(min) = VO(max) + VDO(max load)
Because the TPS7101 is programmable, rDS(on) should be used to calculate VDO before applying the above equation. The equation for calculating
VDO from rDS(on) is given in Note 2 in the electrical characteristics table. The minimum value of 2.5 V is the absolute lower limit for the
recommended input voltage range for the TPS7101.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
electrical characteristics at IO = 10 mA, EN = 0 V, CO = 4.7 µF/CSR† = 1 Ω, SENSE/FB shorted to OUT
(unless otherwise noted)
TEST CONDITIONS‡
PARAMETER
TJ
TPS7101Q, TPS7133Q
TPS7148Q, TPS7150Q
MIN
Ground current (active mode)
EN ≤ 0.5 V,
0 mA ≤ IO ≤ 500 mA
VI = VO + 1 V,
Input current (standby mode)
EN = VI,
2 7 V ≤ VI ≤ 10 V
2.7
Output current limit
VO = 0
0,
VI = 10 V
Pass-element leakage
g current in standby
y
mode
EN = VI,
2 7 V ≤ VI ≤ 10 V
2.7
PG leakage current
Normal operation,
operation
VPG = 10 V
Output voltage temperature coefficient
25°C
EN logic low (active mode)
350
25°C
0.5
– 40°C to 125°C
2
25°C
1.2
– 40°C to 125°C
2
2
25°C
0.5
– 40°C to 125°C
1
25°C
0.02
– 40°C to 125°C
0.5
0.5
– 40°C to 125°C
61
75
– 40°C to 125°C
6 V ≤ VI ≤ 10 V
2 7 V ≤ VI ≤ 10 V
2.7
2
0 V ≤ VI ≤ 10 V
0 V ≤ VI ≤ 10 V
25°C
0.5
– 40°C to 125°C
0.5
50
– 0.5
0.5
– 40°C to 125°C
– 0.5
0.5
2.05
– 40°C to 125°C
IPG = 300 µA
IPG = 300 µA
25°C
– 40°C to 125°C
µA
A
µA
µA
ppm/°C
2.5
2.5
1.06
V
mV
25°C
25°C
µA
V
2.7
25°C
UNIT
°C
165
2.5 V ≤ VI ≤ 6 V
Minimum VI for active pass element
Minimum VI for valid PG
285
460
EN hysteresis voltage
EN input current
MAX
– 40°C to 125°C
Thermal shutdown junction temperature
EN logic high (standby mode)
TYP
1.5
1.9
µA
V
V
† CSR (compensation series resistance) refers to the total series resistance, including the equivalent series resistance (ESR) of the capacitor, any
series resistance added externally, and PWB trace resistance to CO.
‡ Pulse-testing techniques are used to maintain virtual junction temperature as close as possible to ambient temperature; thermal effects must
be taken into account separately.
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TPS7101 electrical characteristics at IO = 10 mA, VI = 3.5 V, EN = 0 V, CO = 4.7 µF/CSR† = 1 Ω, FB
shorted to OUT at device leads (unless otherwise noted)
TEST CONDITIONS‡
PARAMETER
Reference voltage (measured at FB
with OUT connected to FB)
VI = 3.5 V,
2.5 V ≤ VI ≤ 10 V,
See Note 1
IO = 10 mA
5 mA ≤ IO ≤ 500 mA,
Reference voltage temperature
coefficient
Pass-element series resistance
(see Note 2)
Input regulation
Output regulation
VI = 2
2.4
4V
V,
50 µA ≤ IO ≤ 150 mA
VI = 2
2.4
4V
V,
150 mA ≤ IO ≤ 500
mA
25°C
– 40°C to 125°C
TYP
MAX
1.178
1.143
1.213
– 40°C to 125°C
61
75
25°C
0.7
1
0.83
1.3
0.52
0.85
– 40°C to 125°C
– 40°C to 125°C
1.3
25°C
50 µA ≤ IO ≤ 500 mA
25°C
0.32
50 µA ≤ IO ≤ 500 mA
25°C
0.23
VI = 2.5 V to 10 V,,
See Note 1
50 µ
µA ≤ IO ≤ 500 mA,,
25°C
18
– 40°C to 125°C
25
IO = 5 mA to 500 mA,,
See Note 1
2.5 V ≤ VI ≤ 10 V,,
IO = 50 µA
µ to 500 mA,,
See Note 1
2.5 V ≤ VI ≤ 10 V,,
Output noise-spectral density
f = 120 Hz
Output noise voltage
10 Hz
H ≤ f ≤ 100 kHz,
kH
CSR† = 1 Ω
25°C
14
– 40°C to 125°C
25
25°C
22
– 40°C to 125°C
54
25°C
48
– 40°C to 125°C
44
25°C
45
– 40°C to 125°C
44
25°C
95
25°C
89
CO = 100 µF
25°C
74
Measured at VFB
VI = 2
2.13
13 V
FB input current
1.101
12
25°C
0.1
– 40°C to 125°C
– 10
– 20
mV
µVrms
0.1
V
mV
0.4
0.4
25°C
mV
µV/√Hz
1.145
25°C
– 40°C to 125°C
mV
dB
54
CO = 10 µF
– 40°C to 125°C
Ω
59
CO = 4.7 µF
VFB voltage decreasing from above VPG
ppm/°C
0.85
2
PG hysteresis voltage§
IPG = 400 µA
µA,
– 40°C to 125°C
25°C
PG trip-threshold voltage§
V
1
25°C
VI = 3.9 V,
VI = 5.9 V,
f = 120 Hz
UNIT
V
50 µA ≤ IO ≤ 500 mA
IO = 500 mA,,
See Note 1
PG output low voltage§
TPS7101Q
MIN
VI = 2
2.9
9V
V,
IO = 50 µA
Ripple rejection
TJ
10
20
V
nA
† CSR refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance
to CO.
‡ Pulse-testing techniques are used to maintain virtual junction temperature as close as possible to ambient temperature; thermal effects must
be taken into account separately.
§ Output voltage programmed to 2.5 V with closed-loop configuration (see application information).
NOTES: 1. When VI < 2.9 V and IO > 150 mA simultaneously, pass element rDS(on) increases (see Figure 27) to a point such that the resulting
dropout voltage prevents the regulator from maintaining the specified tolerance range.
2. To calculate dropout voltage, use equation:
VDO = IO ⋅ rDS(on)
rDS(on) is a function of both output current and input voltage. The parametric table lists rDS(on) for VI = 2.4 V, 2.9 V, 3.9 V, and
5.9 V, which corresponds to dropout conditions for programmed output voltages of 2.5 V, 3 V, 4 V, and 6 V, respectively. For other
programmed values, refer to Figure 26.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
7
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TPS7133 electrical characteristics at IO = 10 mA, VI = 4.3 V, EN = 0 V, CO = 4.7 µF/CSR† = 1 Ω, SENSE
shorted to OUT (unless otherwise noted)
TEST CONDITIONS‡
PARAMETER
Output voltage
VI = 4.3 V,
4.3 V ≤ VI ≤ 10 V,
IO = 10 mA
5 mA ≤ IO ≤ 500 mA
IO = 10 mA
mA,
VI = 3
3.23
23 V
mA
IO = 100 mA,
23 V
VI = 3
3.23
IO = 500 mA,
mA
VI = 3
3.23
23 V
Pass element series resistance
Pass-element
(
(3.23
V – VO))/IO,
IO = 500 mA
VI = 3.23 V,,
Input regulation
VI = 4.3
4 3 V to 10 V,
V
50 µA ≤ IO ≤ 500 mA
IO = 5 mA to 500 mA,
mA
4 3 V ≤ VI ≤ 10 V
4.3
IO = 50 µA to 500 mA
mA,
4 3 V ≤ VI ≤ 10 V
4.3
Dropout voltage
Output regulation
IO = 50 µA
Ripple rejection
f = 120 Hz
IO = 500 mA
Output noise-spectral density
f = 120 Hz
Output noise voltage
10 Hz
H ≤ f ≤ 100 kHz,
kH
CSR† = 1 Ω
PG trip-threshold voltage
TJ
25°C
– 40°C to 125°C
25°C
3.37
4.5
7
47
60
– 40°C to 125°C
80
25°C
235
– 40°C to 125°C
mV
300
0.47
0.6
– 40°C to 125°C
0.8
25°C
20
– 40°C to 125°C
27
25°C
21
– 40°C to 125°C
38
75
25°C
30
– 40°C to 125°C
60
120
25°C
43
– 40°C to 125°C
40
25°C
39
– 40°C to 125°C
36
Ω
mV
mV
mV
54
dB
49
CO = 4.7 µF
25°C
274
CO = 10 µF
25°C
228
CO = 100 µF
25°C
159
2.868
µV/√Hz
µVrms
3
25°C
35
25°C
0.22
– 40°C to 125°C
V
400
25°C
– 40°C to 125°C
UNIT
8
25°C
2
VI = 2
2.8
8V
MAX
3.3
3.23
25°C
VO voltage decreasing from above VPG
IPG = 1 mA
mA,
TYP
– 40°C to 125°C
PG hysteresis voltage
PG output low voltage
TPS7133Q
MIN
V
mV
0.4
0.4
V
† CSR refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance
to CO.
‡ Pulse-testing techniques are used to maintain virtual junction temperature as close as possible to ambient temperature; thermal effects must
be taken into account separately.
8
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TPS7148 electrical characteristics at IO = 10 mA, VI = 5.85 V, EN = 0 V, CO = 4.7 µF/CSR† = 1 Ω, SENSE
shorted to OUT (unless otherwise noted)
TEST CONDITIONS‡
PARAMETER
Output voltage
VI = 5.85 V,
5.85 V ≤ VI ≤ 10 V,
IO = 10 mA
5 mA ≤ IO ≤ 500 mA
IO = 10 mA
mA,
VI = 4
4.75
75 V
mA
IO = 100 mA,
75 V
VI = 4
4.75
IO = 500 mA,
mA
VI = 4
4.75
75 V
Pass element series resistance
Pass-element
(
(4.75
V – VO))/IO,
IO = 500 mA
VI = 4.75 V,,
Input regulation
VI = 5
5.85
85 V to 10 V
V,
50 µA ≤ IO ≤ 500 mA
IO = 5 mA to 500 mA,
mA
5 85 V ≤ VI ≤ 10 V
5.85
IO = 50 µA to 500 mA
mA,
5 85 V ≤ VI ≤ 10 V
5.85
Dropout voltage
IO = 50 µA
f = 120 Hz
IO = 500 mA
Output noise-spectral density
f = 120 Hz
Output noise voltage
10 Hz
H ≤ f ≤ 100 kHz,
kH
CSR† = 1 Ω
PG trip-threshold voltage
25°C
– 40°C to 125°C
25°C
4.95
2.9
6
30
37
– 40°C to 125°C
54
25°C
150
180
0.32
0.35
– 40°C to 125°C
0.52
25°C
27
– 40°C to 125°C
37
25°C
12
– 40°C to 125°C
42
80
25°C
42
– 40°C to 125°C
60
130
25°C
42
– 40°C to 125°C
39
25°C
39
– 40°C to 125°C
35
mV
Ω
mV
mV
mV
53
dB
50
CO = 4.7 µF
25°C
410
CO = 10 µF
25°C
328
CO = 100 µF
25°C
212
4.5
µV/√Hz
µVrms
4.7
25°C
50
25°C
0.2
– 40°C to 125°C
V
250
25°C
– 40°C to 125°C
UNIT
8
25°C
2
12 V
VI = 4
4.12
MAX
4.85
4.75
25°C
VO voltage decreasing from above VPG
1 2 mA,
mA
IPG = 1.2
TYP
– 40°C to 125°C
PG hysteresis voltage
PG output low voltage
TPS7148Q
MIN
– 40°C to 125°C
Output regulation
Ripple rejection
TJ
V
mV
0.4
0.4
V
† CSR refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance
to CO.
‡ Pulse-testing techniques are used to maintain virtual junction temperature as close as possible to ambient temperature; thermal effects must
be taken into account separately.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
9
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TPS7150 electrical characteristics at IO = 10 mA, VI = 6 V, EN = 0 V, CO = 4.7 µF/CSR† = 1 Ω, SENSE
shorted to OUT (unless otherwise noted)
TEST CONDITIONS‡
PARAMETER
Output voltage
VI = 6 V,
6 V ≤ VI ≤ 10 V,
IO = 10 mA
5 mA ≤ IO ≤ 500 mA
IO = 10 mA
mA,
VI = 4
4.88
88 V
mA
IO = 100 mA,
88 V
VI = 4
4.88
IO = 500 mA,
mA
VI = 4
4.88
88 V
Pass element series resistance
Pass-element
(
(4.88
V – VO))/IO,
IO = 500 mA
VI = 4.88 V,,
Input regulation
VI = 6 V to 10 V,
V
50 µA ≤ IO ≤ 500 mA
IO = 5 mA to 500 mA,
mA
6 V ≤ VI ≤ 10 V
IO = 50 µA to 500 mA
mA,
6 V ≤ VI ≤ 10 V
Dropout voltage
IO = 50 µA
f = 120 Hz
IO = 500 mA
Output noise-spectral density
f = 120 Hz
Output noise voltage
10 Hz
H ≤ f ≤ 100 kHz,
kH
CSR† = 1 Ω
PG trip-threshold voltage
25°C
– 40°C to 125°C
25°C
5.1
2.9
6
27
32
– 40°C to 125°C
47
25°C
146
170
0.29
0.32
– 40°C to 125°C
0.47
25°C
25
– 40°C to 125°C
32
25°C
30
– 40°C to 125°C
45
86
25°C
45
– 40°C to 125°C
65
140
25°C
45
– 40°C to 125°C
40
25°C
42
– 40°C to 125°C
36
mV
Ω
mV
mV
mV
55
dB
52
CO = 4.7 µF
25°C
430
CO = 10 µF
25°C
345
CO = 100 µF
25°C
220
4.55
µV/√Hz
µVrms
4.75
25°C
53
25°C
0.2
– 40°C to 125°C
V
230
25°C
– 40°C to 125°C
UNIT
8
25°C
2
VI = 4
4.25
25 V
MAX
5
4.9
25°C
VO voltage decreasing from above VPG
IPG = 1.2
1 2 mA,
mA
TYP
– 40°C to 125°C
PG hysteresis voltage
PG output low voltage
TPS7150Q
MIN
– 40°C to 125°C
Output regulation
Ripple rejection
TJ
V
mV
0.4
0.4
V
† CSR refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance
to CO.
‡ Pulse-testing techniques are used to maintain virtual junction temperature as close as possible to ambient temperature; thermal effects must
be taken into account separately.
10
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
electrical characteristics at IO = 10 mA, EN = 0 V, CO = 4.7 µF/CSR† = 1 Ω, TJ = 25°C, SENSE/FB
shorted to OUT (unless otherwise noted)
TEST CONDITIONS‡
PARAMETER
TPS7101Y, TPS7133Y
TPS7148Y, TPS7150Y
MIN
Ground current (active mode)
EN ≤ 0.5 V,
0 mA ≤ IO ≤ 500 mA
VI = VO + 1 V,
Output current limit
VO = 0,
VI = 10 V
PG leakage current
Normal operation,
VPG = 10 V
TYP
EN hysteresis voltage
Minimum VI for active pass element
Minimum VI for valid PG
IPG = 300 µA
TEST CONDITIONS‡
PARAMETER
Reference voltage (measured at FB with OUT
connected to FB)
µA
285
Thermal shutdown junction temperature
1.2
A
0.02
µA
165
°C
50
mV
2.05
V
1.06
V
TPS7101Y
MIN
UNIT
MAX
TYP
MAX
VI = 3.5 V,
IO = 10 mA
VI = 2.4 V,
VI = 2.4 V,
50 µA ≤ IO ≤ 150 mA
150 mA ≤ IO ≤ 500 mA
0.83
VI = 2.9 V,
VI = 3.9 V,
50 µA ≤ IO ≤ 500 mA
0.52
50 µA ≤ IO ≤ 500 mA
0.32
VI = 5.9 V,
VI = 2.5 V to 10 V,
See Note 1
50 µA ≤ IO ≤ 500 mA
0.23
50 µA ≤ IO ≤ 500 mA,
18
mV
2.5 V ≤ VI ≤ 10 V,
See Note 1
IO = 5 mA to 500 mA,
14
mV
2.5 V ≤ VI ≤ 10 V,
See Note 1
IO = 50 µA to 500 mA,
22
mV
Ripple rejection
VI = 3.5 V,
IO = 50 µA
f = 120 Hz,
Output noise-spectral density
VI = 3.5 V,
f = 120 Hz
Pass-element series resistance (see Note 2)
Input regulation
Output regulation
Output noise voltage
VI = 3.5 V,
10 Hz ≤ f ≤ 100 kHz,
CSR† = 1 Ω
1.178
UNIT
V
0.7
Ω
59
dB
2
µV/√Hz
CO = 4.7 µF
95
CO = 10 µF
89
CO = 100 µF
74
µVrms
PG hysteresis voltage§
VI = 3.5 V,
Measured at VFB
12
mV
PG output low voltage§
VI = 2.13 V,
IPG = 400 µA
0.1
V
FB input current
0.1
nA
VI = 3.5 V
VI = 3.5 V
† CSR refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance
to CO.
‡ Pulse-testing techniques are used to maintain virtual junction temperature as close as possible to ambient temperature; thermal effects must
be taken into account separately.
§ Output voltage programmed to 2.5 V with closed-loop configuration (see application information).
NOTES: 1. When VI < 2.9 V and IO > 150 mA simultaneously, pass element rDS(on) increases (see Figure 27) to a point such that the resulting
dropout voltage prevents the regulator from maintaining the specified tolerance range.
2. To calculate dropout voltage, use equation:
VDO = IO ⋅ rDS(on)
rDS(on) is a function of both output current and input voltage. The parametric table lists rDS(on) for VI = 2.4 V, 2.9 V, 3.9 V, and
5.9 V, which corresponds to dropout conditions for programmed output voltages of 2.5 V, 3 V, 4 V, and 6 V, respectively. For other
programmed values, refer to Figure 26.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
11
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
electrical characteristics at IO = 10 mA, EN = 0 V, CO = 4.7 µF/CSR† = 1 Ω, TJ = 25°C, SENSE shorted
to OUT (unless otherwise noted) (continued)
TEST CONDITIONS‡
PARAMETER
Output voltage
TPS7133Y
MIN
TYP
MAX
VI = 4.3 V,
VI = 3.23 V,
IO = 10 mA
IO = 10 mA
0.02
VI = 3.23 V,
VI = 3.23 V,
IO = 100 mA
IO = 500 mA
235
(3.23 V – VO)/IO,
IO = 500 mA
VI = 3.23 V,
0.47
4.3 V ≤ VI ≤ 10 V,
IO = 5 mA to 500 mA
IO = 50 µA to 500 mA
21
mV
4.3 V ≤ VI ≤ 10 V,
30
mV
Ripple rejection
VI = 4.3 V,,
f = 120 Hz
IO = 50 µA
IO = 500 mA
54
Output noise-spectral density
VI = 4.3 V,
f = 120 Hz
Output noise voltage
VI = 4.3 V,
10 Hz ≤ f ≤ 100 kHz,
CSR† = 1 Ω
Dropout voltage
Pass-element series resistance
Output regulation
PG hysteresis voltage
VI = 4.3 V
PG output low voltage
VI = 2.8 V,
Output voltage
V
mV
47
Ω
dB
49
µV/√Hz
2
CO = 4.7 µF
274
CO = 10 µF
228
CO = 100 µF
159
IPG = 1 mA
0.22
µVrms
35
TEST CONDITIONS‡
PARAMETER
3.3
UNIT
mV
V
TPS7148Y
MIN
TYP
UNIT
VI = 5.85 V,
VI = 4.75 V,
IO = 10 mA
IO = 10 mA
VI = 4.75 V,
VI = 4.75 V,
IO = 100 mA
IO = 500 mA
150
(4.75 V – VO)/IO,
IO = 500 mA
VI = 4.75 V,
0.32
5.85 V ≤ VI ≤ 10 V,
12
mV
5.85 V ≤ VI ≤ 10 V,
IO = 5 mA to 500 mA
IO = 50 µA to 500 mA
42
mV
Ripple rejection
VI = 5.85 V,,
f = 120 Hz
IO = 50 µA
IO = 500 mA
53
Output noise-spectral density
VI = 5.85 V,
f = 120 Hz
Dropout voltage
Pass-element series resistance
Output regulation
Output noise voltage
VI = 5.85 V,
10 Hz ≤ f ≤ 100 kHz,
CSR† = 1 Ω
PG hysteresis voltage
VI = 5.85 V
4.85
MAX
V
0.08
30
50
2
CO = 4.7 µF
410
CO = 10 µF
328
CO = 100 µF
212
50
mV
Ω
dB
µV/√Hz
µVrms
mV
VI = 4.12 V,
IPG = 1.2 mA
0.2
0.4
V
PG output low voltage
† CSR refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance
to CO.
‡ Pulse-testing techniques are used to maintain virtual junction temperature as close as possible to ambient temperature; thermal effects must
be taken into account separately.
12
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
electrical characteristics at IO = 10 mA, EN = 0 V, CO = 4.7 µF/CSR† = 1 Ω, TJ = 25°C, SENSE shorted
to OUT (unless otherwise noted) (continued)
TEST CONDITIONS‡
PARAMETER
Output voltage
TPS7150Y
MIN
TYP
UNIT
VI = 6 V,
VI = 4.88 V,
IO = 10 mA
IO = 10 mA
0.13
VI = 4.88 V,
VI = 4.88 V,
IO = 100 mA
IO = 500 µA
146
(4.88 V – VO)/IO,
IO = 500 mA
VI = 4.88 V,
0.29
6 V ≤ VI ≤ 10 V,
IO = 5 mA to 500 mA
IO = 50 µA to 500 mA
30
mV
6 V ≤ VI ≤ 10 V,
45
mV
Ripple rejection
VI = 6 V,,
f = 120 Hz
IO = 50 µA
IO = 500 mA
55
Output noise-spectral density
VI = 6 V,
f = 120 Hz
Output noise voltage
VI = 6 V,
10 Hz ≤ f ≤ 100 kHz,
CSR† = 1 Ω
Dropout voltage
Pass-element series resistance
Output regulation
PG hysteresis voltage
5
MAX
27
52
2
CO = 4.7 µF
430
CO = 10 µF
345
CO = 100 µF
220
53
VI = 6 V
V
mV
Ω
dB
µV/√Hz
µVrms
mV
VI = 4.25 V,
0.2
V
PG output low voltage
PG = 1.2 mA
† CSR refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance
to CO.
‡ Pulse-testing techniques are used to maintain virtual junction temperature as close as possible to ambient temperature; thermal effects must
be taken into account separately.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
13
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
vs Output current
5
vs Input voltage
6
vs Free-air temperature
7
vs Output current
8
Change in dropout voltage
vs Free-air temperature
9
∆VO
VO
Change in output voltage
vs Free-air temperature
10
Output voltage
vs Input voltage
11
∆VO
Change in output voltage
vs Input voltage
12
IQ
Quiescent current
VDO
∆VDO
Dropout voltage
13
VO
Output voltage
vs Output current
14
15
16
17
Ripple rejection
vs Frequency
18
19
20
21
22
Output spectral noise density
vs Frequency
rDS(on)
Pass-element resistance
vs Input voltage
25
R
Divider resistance
vs Free-air temperature
26
II(SENSE)
SENSE pin current
vs Free-air temperature
27
FB leakage current
vs Free-air temperature
28
Minimum input voltage for active-pass element
vs Free-air temperature
29
Minimum input voltage for valid PG
vs Free-air temperature
30
Input current (EN)
vs Free-air temperature
31
23
24
VI
II(EN)
Output voltage response from Enable (EN)
14
32
VPG
Power-good (PG) voltage
vs Output voltage
CSR
Compensation series resistance
vs Output current
CSR
Compensation series resistance
vs Added ceramic capacitance
CSR
Compensation series resistance
vs Output current
CSR
Compensation series resistance
vs Added ceramic capacitance
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
33
34
35
36
37
38
39
40
41
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
QUIESCENT CURRENT
vs
OUTPUT CURRENT
QUIESCENT CURRENT
vs
INPUT VOLTAGE
355
400
345
350
335
TPS71xx, VI = 10 V
I Q – Quiescent Current – µ A
I Q – Quiescent Current – µ A
TA = 25°C
RL = 10 Ω
TA = 25°C
325
315
305
295
TPS7150, VI = 6 V
285
TPS7133
300
TPS7148
250
TPS7150
200
TPS7101 With VO
Programmed to 2.5 V
150
100
TPS7148, VI = 5.85 V
275
50
TPS7133, VI = 4.3 V
265
0
50 100 150 200 250 300 350 400 450 500
0
0
1
2
3
IO – Output Current – mA
4
5
6
7
8
9
10
VI – Input Voltage – V
Figure 5
Figure 6
TPS7148Q
QUIESCENT CURRENT
vs
FREE-AIR TEMPERATURE
DROPOUT VOLTAGE
vs
OUTPUT CURRENT
400
0.3
TA = 25°C
0.25
350
TPS7133
Dropout Voltage – V
I Q – Quiesent Current – µ A
VI = VO(nom) + 1 V
IO = 10 mA
300
250
0.2
0.15
TPS7148
0.1
TPS7150
200
150
– 50
0.05
0
– 25
0
25
50
75
100
TA – Free-Air Temperature – °C
125
0
50 100 150 200 250 300 350 400 450 500
IO – Output Current – mA
Figure 8
Figure 7
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
15
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
CHANGE IN DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
CHANGE IN OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
10
20
IO = 100 mA
∆ VO – Change in Output Voltage – mV
Change in Dropout Voltage – mV
8
6
4
2
0
–2
–4
–6
–8
– 10
– 50
– 25
0
25
50
75
100
VI = VO(nom) + 1 V
IO = 10 mA
15
10
5
0
–5
– 10
– 15
– 20
– 50
125
– 25
TA – Free-Air Temperature – °C
0
Figure 9
20
TA = 25°C
RL = 10 Ω
∆VO– Change In Output Voltage – mV
TPS7150
VO – Output Voltage – V
5
TPS7148
4
3
TPS7133
TPS7101 With VO
Programmed to 2.5 V
1
0
1
2
3
4
100
125
5
6
7
8
9
10
TA = 25°C
RL = 10 Ω
15
10
TPS7150
5
TPS7148
0
–5
TPS7133
– 10
– 15
– 20
4
VI – Input Voltage – V
Figure 11
16
75
CHANGE IN OUTPUT VOLTAGE
vs
INPUT VOLTAGE
6
0
50
Figure 10
OUTPUT VOLTAGE
vs
INPUT VOLTAGE
2
25
TA – Free-Air Temperature – °C
5
8
6
7
VI – Input Voltage – V
Figure 12
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
9
10
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
TPS7101Q
TPS7133Q
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
2.52
3.34
TA = 25°C
VO Programmed to 2.5 V
TA = 25°C
3.33
2.51
VO – Output Voltage – V
VO – Output Voltage – V
2.515
2.505
2.5
VI = 3.5 V
2.495
VI = 10 V
3.32
3.31
3.28
2.485
3.27
0
100
200
400
300
VI = 4.3 V
3.29
2.49
2.48
VI = 10 V
3.3
3.26
500
0
400
200
300
IO – Output Current – mA
100
IO – Output Current – mA
Figure 13
Figure 14
TPS7148Q
TPS7150Q
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
4.92
5.06
TA = 25°C
5.05
4.9
5.04
4.89
5.03
VO – Output Voltage – V
VO – Output Voltage – V
4.91
4.88
4.87
VI = 5.85 V
4.86
4.85
VI = 10 V
4.84
4.83
TA = 25°C
5.02
5.01
VI = 6 V
5
4.99
VI = 10 V
4.98
4.97
4.82
4.96
4.81
4.95
4.8
500
0
100
200
300
400
500
4.94
0
IO – Output Current – mA
100
300
200
400
IO – Output Current – mA
500
Figure 16
Figure 15
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
17
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TPS7101Q
TPS7133Q
RIPPLE REJECTION
vs
FREQUENCY
RIPPLE REJECTION
vs
FREQUENCY
70
70
60
60
40
30
20
10
0
10
RL = 500 Ω
TA = 25°C
VI = 3.5 V
RL = 100 kΩ
50
RL = 100 kΩ
50
Ripple Rejection – dB
Ripple Rejection – dB
TYPICAL CHARACTERISTICS
CO = 4.7 µF (CSR = 1 Ω)
No Input Capacitance
VO Programmed to 2.5 V
40
30
RL = 500 Ω
20
RL = 10 Ω
TA = 25°C
VI = 3.5 V
10
CO = 4.7 µF (CSR = 1 Ω)
No Input Capacitance
0
RL = 10 Ω
100
1K
10K
100K
1M
– 10
10
10M
100
1k
10 k
Figure 17
TPS7148Q
TPS7150Q
RIPPLE REJECTION
vs
FREQUENCY
RIPPLE REJECTION
vs
FREQUENCY
Ripple Rejection – dB
Ripple Rejection – dB
RL = 100 kΩ
RL = 10 Ω
30
RL = 500 Ω
20
TA = 25°C
VI = 3.5 V
CO = 4.7 µF (CSR = 1 Ω)
No Input Capacitance
100
1k
10 k
40
1M
10 M
RL = 10 Ω
30
RL = 500 Ω
20
10
100 k
RL = 100 kΩ
50
TA = 25°C
VI = 3.5 V
CO = 4.7 µF (CSR = 1 Ω)
No Input Capacitance
0
10
f – Frequency – Hz
100
1k
10 k
Figure 20
POST OFFICE BOX 655303
100 k
f – Frequency – Hz
Figure 19
18
10 M
60
50
– 10
10
1M
70
60
0
10 M
Figure 18
70
10
1M
f – Frequency – Hz
f – Frequency – Hz
40
100 k
• DALLAS, TEXAS 75265
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
TPS7101Q
TPS7133Q
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
TA = 25°C
No Input Capacitance
VI = 3.5 V
VO Programmed to 2.5 V
CO = 4.7 µF (CSR = 1 Ω)
1
CO = 10 µF (CSR = 1 Ω)
0.1
10
Output Spectral Noise Density – µV/ Hz
Output Spectral Noise Density – µV/ Hz
10
CO = 100 µF (CSR = 1 Ω)
0.01
10
102
103
104
TA = 25°C
No Input Capacitance
VI = 4.3 V
CO = 10 µF (CSR = 1 Ω)
1
CO = 4.7 µF (CSR = 1 Ω)
CO = 100 µF (CSR = 1 Ω)
0.1
0.01
10
105
102
f – Frequency – Hz
f – Frequency – Hz
Figure 21
Figure 22
TPS7148Q
104
105
TPS7150Q
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
10
10
TA = 25°C
No Input Capacitance
VI = 5.85 V
CO = 10 µF (CSR = 1 Ω)
1
CO = 4.7 µF (CSR = 1 Ω)
0.1
CO = 100 µF (CSR = 1 Ω)
Output Spectral Noise Density – µV/ Hz
Output Spectral Noise Density – µV/ Hz
103
CO = 10 µF (CSR = 1 Ω)
CO = 4.7 µF (CSR = 1 Ω)
1
TA = 25°C
No Input Capacitance
VI = 6 V
0.1
CO = 100 µF (CSR = 1 Ω)
0.01
10
100
1k
10 k
f – Frequency – Hz
100 k
0.01
10
Figure 23
100
1k
10 k
f – Frequency – Hz
100 k
Figure 24
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
19
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
PASS-ELEMENT RESISTANCE
vs
INPUT VOLTAGE
DIVIDER RESISTANCE
vs
FREE-AIR TEMPERATURE
1.2
TA = 25°C
VI(FB) = 1.12 V
1
0.8
IO = 500 mA
0.7
0.6
0.5
VI = VO(nom) + 1 V
VI(sense) = VO(nom)
1.1
0.9
R – Divider Resistance – M Ω
rDS(on) – Pass-Element Resistance – Ω
1.1
IO = 100 mA
0.4
TPS7150
1
TPS7148
0.9
0.8
0.7
TPS7133
0.6
0.3
0.5
0.2
0.1
3
2
4
6
8
5
7
VI – Input Voltage – V
9
0.4
– 50
10
– 25
0
100
125
100
125
ADJUSTABLE VERSION
FB LEAKAGE CURRENT
vs
FREE-AIR TEMPERATURE
6
0.6
VI = VO(nom) + 1 V
VI(sense) = VO(nom)
VFB = 2.5 V
0.5
5.6
FB Leakage Current – nA
I I(sense) – Sense Pin Current – µ A
75
Figure 26
FIXED-OUTPUT VERSIONS
SENSE PIN CURRENT
vs
FREE-AIR TEMPERATURE
5.4
5.2
5
4.8
4.4
– 50
0.4
0.3
0.2
0.1
4.6
– 25
0
25
50
75
100
125
0
– 50
TA – Free-Air Temperature – °C
– 25
0
25
Figure 28
POST OFFICE BOX 655303
50
75
TA – Free-Air Temperature – °C
Figure 27
20
50
TA – Free-Air Temperature – °C
Figure 25
5.8
25
• DALLAS, TEXAS 75265
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
MINIMUM INPUT VOLTAGE FOR ACTIVE
PASS ELEMENT
vs
FREE-AIR TEMPERATURE
VI – Minimum Input Voltage – V
2.09
1.1
RL = 500 Ω
VI – Minimum Input Voltage – V
2.1
MINIMUM INPUT VOLTAGE FOR VALID
POWER GOOD (PG)
vs
FREE-AIR TEMPERATURE
2.08
2.07
2.06
2.05
2.04
ÁÁ
ÁÁ
1.08
1.07
ÁÁ
ÁÁ
2.03
2.02
2.01
– 25
0
25
50
75
100
TA – Free-Air Temperature – °C
1.06
1.05
– 50
125
– 25
0
25
50
75
100
125
TA – Free-Air Temperature – °C
Figure 29
Figure 30
EN INPUT CURRENT
vs
FREE-AIR TEMPERATURE
100
90
VI = VI(EN) = 10 V
80
I I(EN) – Input Current – nA
2
– 50
1.09
70
60
50
40
30
20
10
0
– 40 – 20
0
20 40 60
80 100 120 140
TA – Free-Air Temperature – °C
Figure 31
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
21
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
VO – Output Voltage – V
OUTPUT VOLTAGE RESPONSE FROM
ENABLE (EN)
VO(nom)
TA = 25°C
RL = 500 Ω
CO = 4.7 µF (ESR = 1Ω)
No Input Capacitance
4
2
0
–2
0
20
40
60
80 100 120 140
Time – µs
Figure 32
POWER-GOOD (PG) VOLTAGE
vs
OUTPUT VOLTAGE
6
VPG – Power-Good (PG) Voltage – V
TA = 25°C
PG Pulled Up to 5 V With 5 kΩ
5
4
3
ÁÁ
ÁÁ
2
1
0
93
94
95
96
97
98
VO – Output Voltage (VO as a percent of VO(nom)) – %
Figure 33
22
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
EN Voltage – V
6
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
TYPICAL REGIONS OF STABILITY
COMPENSATION SERIES RESISTANCE
vs
OUTPUT CURRENT
100
100
VI = VO(nom) + 1 V
No Input Capacitance
CO = 4.7 µF
No Added Ceramic Capacitance
TA = 25°C
CSR – Compensation Series Resistance – Ω
CSR – Compensation Series Resistance – Ω
TYPICAL REGIONS OF STABILITY
COMPENSATION SERIES RESISTANCE
vs
OUTPUT CURRENT
Region of Instability
10
1
Region of Instability
VI = VO(nom) + 1 V
No Input Capacitance
CO = 4.7 µF + 0.5 µF of
Ceramic Capacitance
TA = 25°C
10
Region of Instability
1
Region of Instability
0.1
0.1
0
0
50 100 150 200 250 300 350 400 450 500
50 100 150 200 250 300 350 400 450 500
IO – Output Current – mA
IO – Output Current – mA
Figure 34
Figure 35
TYPICAL REGIONS OF STABILITY
TYPICAL REGIONS OF STABILITY
COMPENSATION SERIES RESISTANCE
vs
ADDED CERAMIC CAPACITANCE
COMPENSATION SERIES RESISTANCE
vs
ADDED CERAMIC CAPACITANCE
100
VI = VO(nom) + 1 V
No Input Capacitance
IO= 100 mA
CO = 4.7 µF
TA = 25°C
10
CSR – Compensation Series Resistance – Ω
CSR – Compensation Series Resistance – Ω
100
Region of Instability
1
Region of Instability
0.1
VI = VO(nom) + 1 V
No Input Capacitance
IO= 500 mA
CO = 4.7 µF
TA = 25°C
10
Region of Instability
1
Region of Instability
0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Ceramic Capacitance – µF
1
Ceramic Capacitance – µF
Figure 36
Figure 37
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
23
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
TYPICAL REGIONS OF STABILITY†
TYPICAL REGIONS OF STABILITY†
COMPENSATION SERIES RESISTANCE
vs
OUTPUT CURRENT
COMPENSATION SERIES RESISTANCE
vs
OUTPUT CURRENT
Region of Instability
100
VI = VO(nom) + 1 V
No Input Capacitance
CO = 10 µF
No Ceramic Capacitance
TA = 25°C
CSR – Compensation Series Resistance – Ω
CSR – Compensation Series Resistance – Ω
100
10
1
0.2
0.1
0
VI = VO(nom) + 1 V
No Input Capacitance
CO = 10 µF + 0.5 µF of
Added Ceramic Capacitance
TA = 25°C
10
Region of Instability
1
0.2
0.1
50 100 150 200 250 300 350 400 450 500
0
50 100 150 200 250 300 350 400 450 500
IO – Output Current – mA
IO – Output Current – mA
Figure 38
TYPICAL REGIONS OF STABILITY†
TYPICAL REGIONS OF STABILITY†
COMPENSATION SERIES RESISTANCE
vs
ADDED CERAMIC CAPACITANCE
COMPENSATION SERIES RESISTANCE
vs
ADDED CERAMIC CAPACITANCE
100
VI = VO(nom) + 1 V
No Input Capacitance
CO = 10 µF
IO = 100 mA
TA = 25°C
CSR – Compensation Series Resistance – Ω
CSR – Compensation Series Resistance – Ω
100
Figure 39
10
Region of Instability
1
0.2
0.1
VI = VO(nom) + 1 V
No Input Capacitance
CO = 10 µF
IO = 500 mA
TA = 25°C
10
Region of Instability
1
0.2
0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Ceramic Capacitance – µF
Ceramic Capacitance – µF
Figure 40
Figure 41
† CSR values below 0.1 Ω are not recommended.
24
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
TYPICAL CHARACTERISTICS
VI
To Load
IN
OUT
SENSE
EN
+
CO
GND
Ccer†
RL
CSR
† Ceramic capacitor
Figure 42. Test Circuit for Typical Regions of Stability (Figures 34 through 41)
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
25
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
APPLICATION INFORMATION
The TPS71xx series of low-dropout (LDO) regulators is designed to overcome many of the shortcomings of
earlier-generation LDOs, while adding features such as a power-saving shutdown mode and a power-good
indicator. The TPS71xx family includes three fixed-output voltage regulators: the TPS7133 (3.3 V), the
TPS7148 (4.85 V), and the TPS7150 (5 V). The family also offers an adjustable device, the TPS7101 (adjustable
from 1.2 V to 9.75 V).
device operation
The TPS71xx, unlike many other LDOs, features very low quiescent currents that remain 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 (IB = IC/β). Close examination of the data sheets reveals
that those devices are typically specified under near no-load conditions; actual operating currents are much
higher as evidenced by typical quiescent current versus load current curves. The TPS71xx uses a PMOS
transistor to pass current; because the gate of the PMOS element is voltage driven, operating currents are low
and invariable over the full load range. The TPS71xx specifications reflect actual performance under load.
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 IB to maintain the load. During power up, this translates
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
TPS71xx quiescent current remains low even when the regulator drops out, eliminating both problems.
Included in the TPS71xx family is a 4.85-V regulator, the TPS7148. Designed specifically for 5-V cellular
systems, its 4.85-V output, regulated to within ± 2%, allows for operation within the low-end limit of 5-V systems
specified to ± 5% tolerance; therefore, maximum regulated operating lifetime is obtained from a battery pack
before the device drops out, adding crucial talk minutes between charges.
The TPS71xx family also features a shutdown mode that places the output in the high-impedance state
(essentially equal to the feedback-divider resistance) and reduces quiescent current to under 2 µA. If the
shutdown feature is not used, EN should be tied to ground. Response to an enable transition is quick; regulated
output voltage is reestablished in typically 120 µs.
minimum load requirements
The TPS71xx family is stable even at zero load; no minimum load is required for operation.
SENSE-pin connection
The SENSE pin of fixed-output devices must be connected to the regulator output for proper functioning of the
regulator. Normally, this connection should be as short as possible; however, the connection can be made near
a critical circuit (remote sense) to improve performance at that point. Internally, SENSE connects to a
high-impedance wide-bandwidth amplifier through a resistor-divider network and noise pickup feeds through
to the regulator output. Routing the SENSE connection to minimize/avoid noise pickup is essential. Adding an
RC network between SENSE and OUT to filter noise is not recommended because it can cause the regulator
to oscillate.
external capacitor requirements
An input capacitor is not required; however, a ceramic bypass capacitor (0.047 pF to 0.1 µF) improves load
transient response and noise rejection if the TPS71xx is 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.
26
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
APPLICATION INFORMATION
external capacitor requirements (continued)
As with most LDO regulators, the TPS71xx family requires an output capacitor for stability. A 10-µF
solid-tantalum capacitor connected from the regulator output to ground is sufficient to ensure stability over the
full load range (see Figure 43). Adding high-frequency ceramic or film capacitors (such as power-supply bypass
capacitors for digital or analog ICs) can cause the regulator to become unstable unless the ESR of the tantalum
capacitor is less than 1.2 Ω over temperature. Where component height and/or mounting area is a problem,
physically smaller, 10-µF devices can be screened for ESR. Figures 34 through 41 show the stable regions of
operation using different values of output capacitance with various values of ceramic load capacitance.
In applications with little or no high-frequency bypass capacitance (< 0.2 µF), the output capacitance can be
reduced to 4.7 µF, provided ESR is maintained between the values shown in figures 34 through 41. Because
minimum capacitor ESR is seldom if ever specified, it may be necessary to add a 0.5-Ω to 1-Ω resistor in series
with the capacitor and limit ESR to 1.5 Ω maximum.
TPS71xx†
8
VI
9
10
C1
0.1 µF
50 V
6
IN
PG
IN
SENSE
IN
OUT
EN
OUT
20
2
250 kΩ
14
VO
13
GND
1
PG
15
3
+
CO
10 µF
ESR
† TPS7133, TPS7148, TPS7150 (fixed-voltage options)
Figure 43. Typical Application Circuit
programming the TPS7101 adjustable LDO regulator
Programming the adjustable regulators is accomplished using an external resistor divider as shown in
Figure 44. The equation governing the output voltage is:
V
O
ǒ Ǔ
+ Vref @ 1 ) R1
R2
where
Vref = reference voltage, 1.178 V typ
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
27
TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
APPLICATION INFORMATION
programming the TPS7101 adjustable LDO regulator (continued)
Resistors R1 and R2 should be chosen for approximately 7-µA divider current. A recommended value for R2
is 169 kΩ with R1 adjusted for the desired output voltage. Smaller resistors can be used, but offer no inherent
advantage and consume more power. Larger values of R1 and R2 should be avoided as leakage currents at
FB introduce an error. Solving equation 1 for R1 yields a more useful equation for choosing the appropriate
resistance:
R1
+
ǒ Ǔ
V
V
O
ref
* 1 @ R2
OUTPUT VOLTAGE
PROGRAMMING GUIDE
TPS7101
VI
PG
IN
0.1 µF
>2.7 V
Power-Good
Indicator
250 kΩ
OUT
EN
VO
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