Very Low Dropout Voltage, Less Than 0.6 V
at 750 mA
D
Low Quiescent Current
D
TTL- and CMOS-Compatible Enable on
TL751M Series
description
The TL750M and TL751M series are low-dropout positive voltage regulators specifically designed for
battery-powered systems. The TL750M and TL751M series incorporate onboard overvoltage and
current-limiting protection circuitry to protect the devices and the regulated system. Both series are fully
protected against 60-V load-dump and reverse-battery conditions. Extremely low quiescent current, even
during full-load conditions, makes the TL750M and TL751M series ideal for standby power systems.
The TL750M and TL751M series offers 5-V, 8-V, 10-V , and 12-V options. The TL751M series has the addition
of an enable (ENABLE) input. The ENABLE input gives the designer complete control over power up, allowing
sequential power up or emergency shutdown. When ENABLE
high-impedance state. The ENABLE input is TTL- and CMOS-compatible.
The TL750MxxC and TL751MxxC are characterized for operation over the virtual junction temperature range
0°C to 125°C.
TL750M, TL751M SERIES
LOW-DROPOUT VOLTAGE REGULATORS
SLVS021H – JANUARY 1988 – REVISED JANUAR Y 2000
D
60-V Load-Dump Protection
D
Overvoltage Protection
D
Internal Thermal Overload Protection
D
Internal Overcurrent-Limiting Circuitry
is high, the regulator output is placed in the
AVAILABLE OPTIONS
PACKAGED DEVICES
V
O
T
J
°
The KTE and KTG packages are available taped and reeled. The KTP is only available taped and reeled. Add the suffix R to device
type (e.g., TL750M05CKTER). Chip forms are tested at 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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 2000, Texas Instruments Incorporated
1
TL750M, TL751M SERIES
LOW-DROPOUT VOLTAGE REGULATORS
SLVS021H – JANUARY 1988 – REVISED JANUAR Y 2000
TL750M ...KC PACKAGE
(TOP VIEW)
TO-220AB
†
OUTPUT
COMMON
INPUT
O
C
I
TL750M . . . KTE PACKAGE
(TOP VIEW)
OUTPUT
COMMON
INPUT
O
C
†
I
TL750M . . . KTP PACKAGE
(TOP VIEW)
†
OUTPUT
COMMON
COMMON
INPUT
O
C
I
†
The common terminal is in electrical contact with the mounting base.
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
†
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.
NOTES: 1. Maximum power dissipation is a function of TJ(max),
ambient temperature is PD = (TJ(max) – TA)/
variation in individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be
activated at power levels slightly above or below the rated dissipation.
2. The package thermal impedance is calculated in accordance with JESD 51.
= 14 V, IO = 300 mA, ENABLE at 0 V for TL751M05, TJ = 25°C (unless
I
otherwise noted) (see Note 3)
TL750M05C
PARAMETERTEST CONDITIONS
p
p
Ripple rejectionVI = 8 V to 18 V,f = 120 Hz5055dB
Output voltage regulationIO = 5 mA to 750 mA2050mV
p
Output noise voltagef = 10 Hz to 100 kHz500µV
Bias current (TL751M05C and TL751M05Q only)ENABLE VIH ≥ 2 V200µA
NOTE 3: Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be
taken into account separately . All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF tantalum capacitor
on the output, with equivalent series resistance within the guidelines shown in Figure 3.
TJ = 0°C to 125°C4.95.1
VI = 9 V to 16 V,IO = 250 mA1025
VI = 6 V to 26 V,IO = 250 mA1250
IO = 500 mA0.5
IO = 750 mA0.6
IO = 750 mA6075
IO = 10 mA5
TL751M05C
MINTYPMAX
4.9555.05
UNIT
electrical characteristics, VI = 14 V, IO = 300 mA, ENABLE at 0 V for TL751M08, TJ = 25°C (unless
otherwise noted) (see Note 3)
TL750M08C
PARAMETERTEST CONDITIONS
p
p
Ripple rejectionVI = 11 V to 21 V,f = 120 Hz5055dB
Output voltage regulationIO = 5 mA to 750 mA2480mV
p
Output noise voltagef = 10 Hz to 100 kHz500µV
Bias current (TL751Mxx only)
NOTE 3: Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be
taken into account separately . All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF tantalum capacitor
on the output, with equivalent series resistance within the guidelines shown in Figure 3.
TJ = 0°C to 125°C7.848.16
VI = 10 V to 17 V,IO = 250 mA1240
VI = 9 V to 26 V,IO = 250 mA1568
IO = 500 mA0.5
IO = 750 mA0.6
IO = 750 mA6075
IO = 10 mA5
ENABLE VIH ≥ 2 V
TL751M08C
MINTYPMAX
7.9288.08
200µA
UNIT
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL750M, TL751M SERIES
Output voltage
V
Input voltage regulation
mV
Dropout voltage
V
Bias current
mA
Output voltage
V
Input voltage regulation
mV
Dropout voltage
V
Bias current
mA
LOW-DROPOUT VOLTAGE REGULATORS
SLVS021H – JANUARY 1988 – REVISED JANUAR Y 2000
electrical characteristics, VI = 14 V, IO = 300 mA, ENABLE at 0 V for TL751M10, TJ = 25°C (unless
otherwise noted) (see Note 3)
TL750M10C
PARAMETERTEST CONDITIONS
p
p
Ripple rejectionVI = 13 V to 23 V,f = 120 Hz5055dB
Output voltage regulationIO = 5 mA to 750 mA30100mV
p
Output noise voltagef = 10 Hz to 100 kHz1000µV
Bias current (TL751Mxx only)
NOTE 3: Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be
taken into account separately . All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF tantalum capacitor
on the output, with equivalent series resistance within the guidelines shown in Figure 3.
TJ = 0°C to 125°C9.810.2
VI = 12 V to 18 V,IO = 250 mA1543
VI = 11 V to 26 V,IO = 250 mA2075
IO = 500 mA0.5
IO = 750 mA0.6
IO = 750 mA6075
IO = 10 mA5
ENABLE VIH ≥ 2 V
TL751M10C
MINTYPMAX
9.91010.1
200µA
UNIT
electrical characteristics, VI = 14 V, IO = 300 mA, ENABLE at 0 V for TL751M12, TJ = 25°C (unless
otherwise noted) (see Note 3)
TL750M12C
PARAMETERTEST CONDITIONS
p
p
Ripple rejectionVI = 13 V to 23 V,f = 120 Hz5055dB
Output voltage regulationIO = 5 mA to 750 mA30120mV
p
Output noise voltagef = 10 Hz to 100 kHz1000µV
Bias current (TL751Mxx only)
NOTE 3: Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be
taken into account separately . All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF tantalum capacitor
on the output, with equivalent series resistance within the guidelines shown in Figure 3.
TJ = 0°C to 125°C11.7612.24
VI = 14 V to 19 V,IO = 250 mA1543
VI = 13 V to 26 V,IO = 250 mA2078
IO = 500 mA0.5
IO = 750 mA0.6
IO = 750 mA6075
IO = 10 mA5
ENABLE VIH ≥ 2 V
TL751M12C
MINTYPMAX
11.8812 12.12
200µA
UNIT
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
5
TL750M, TL751M SERIES
PARAMETER
TEST CONDITIONS
UNIT
Input voltage regulation
mV
PARAMETER
TEST CONDITIONS
UNIT
Input voltage regulation
mV
PARAMETER
TEST CONDITIONS
UNIT
Input voltage regulation
mV
LOW-DROPOUT VOLTAGE REGULATORS
SLVS021H – JANUARY 1988 – REVISED JANUAR Y 2000
electrical characteristics, V
= 14 V , IO = 300 mA, ENABLE at 0 V , TJ = 25°C (unless otherwise noted)
I
(see Note 3)
TL750M05Y
MINTYPMAX
Output voltage5V
p
Ripple rejectionVI = 8 V to 18 V,f = 120 Hz55dB
Output voltage regulationIO = 5 mA to 750 mA20mV
Output noise voltagef = 10 Hz to 100 kHz500µV
Bias currentIO = 750 mA60mA
NOTE 3: Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be
taken into account separately . All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF tantalum capacitor
on the output, with equivalent series resistance within the guidelines shown in Figure 3.
VI = 9 V to 16 V,IO = 250 mA10
VI = 6 V to 26 V,IO = 250 mA12
electrical characteristics, VI = 14 V , IO = 300 mA, ENABLE at 0 V , TJ = 25°C (unless otherwise noted)
(see Note 3)
TL750M08Y
MINTYPMAX
Output voltage8V
p
Ripple rejectionVI = 11 V to 21 V,f = 120 Hz55dB
Output voltage regulationIO = 5 mA to 750 mA24mV
Output noise voltagef = 10 Hz to 100 kHz500µV
Bias currentIO = 750 mA60mA
NOTE 3: Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be
taken into account separately . All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF tantalum capacitor
on the output, with equivalent series resistance within the guidelines shown in Figure 3.
VI = 10 V to 17 V,IO = 250 mA12
VI = 9 V to 26 V,IO = 250 mA15
electrical characteristics, VI = 14 V , IO = 300 mA, ENABLE at 0 V , TJ = 25°C (unless otherwise noted)
(see Note 3)
TL750M10Y
MINTYPMAX
Output voltage10V
p
Ripple rejectionVI = 13 V to 23 V,f = 120 Hz55dB
Output voltage regulationIO = 5 mA to 750 mA30mV
Output noise voltagef = 10 Hz to 100 kHz1000µV
Bias currentIO = 750 mA60mA
NOTE 3: Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be
taken into account separately . All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF tantalum capacitor
on the output, with equivalent series resistance within the guidelines shown in Figure 3.
VI = 12 V to 18 V,IO = 250 mA15
VI = 11 V to 26 V,IO = 250 mA20
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL750M, TL751M SERIES
PARAMETER
TEST CONDITIONS
UNIT
Input voltage regulation
mV
LOW-DROPOUT VOLTAGE REGULATORS
SLVS021H – JANUARY 1988 – REVISED JANUAR Y 2000
TL751M12Y electrical characteristics, VI = 14 V, IO = 300 mA, ENABLE at 0 V, TJ = 25°C (unless
otherwise noted) (see Note 3)
TL750M12Y
MINTYPMAX
Output voltage12V
p
Ripple rejectionVI = 13 V to 23 V,f = 120 Hz55dB
Output voltage regulationIO = 5 mA to 750 mA30mV
Output noise voltagef = 10 Hz to 100 kHz1000µV
Bias currentIO = 750 mA60mA
NOTE 3: Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be
taken into account separately . All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF tantalum capacitor
on the output, with equivalent series resistance within the guidelines shown in Figure 3.
PARAMETER MEASUREMENT INFORMATION
VI = 14 V to 19 V,IO = 250 mA15
VI = 13 V to 26 V,IO = 250 mA20
The TL751Mxx is a low-dropout regulator. This means that the capacitance loading is important to the performance
of the regulator because it is a vital part of the control loop. The capacitor value and the equivalent series resistance
(ESR) both affect the control loop and must be defined for the load range and the temperature range. Figures 1 and 2
can establish the capacitance value and ESR range for the best regulator performance.
Figure 1 shows the recommended range of ESR for a given load with a 10-µF capacitor on the output. This figure
also shows a maximum ESR limit of 2 Ω and a load-dependent minimum ESR limit.
For applications with varying loads, the lightest load condition should be chosen because it is the worst case. Figure 2
shows the relationship of the reciprocal of ESR to the square root of the capacitance with a minimum capacitance
limit of 10 µF and a maximum ESR limit of 2 Ω. This figure establishes the amount that the minimum ESR limit shown
in Figure 1 can be adjusted for different capacitor values. For example, where the minimum load needed is 200 mA,
Figure 2 suggests an ESR range of 0.8 Ω to 2 Ω for 10 µF. Figure 2 shows that changing the capacitor from 10 µF
to 400 µF can change the ESR minimum by greater than 3/0.5 (or 6). Therefore, the new minimum ESR value is 0.8/6
(or 0.13 Ω ). This allows an ESR range of 0.13 Ω to 2 Ω , achieving an expanded ESR range by using a larger capacitor
at the output. For better stability in low-current applications, a small resistance placed in series with the capacitor (see
Table 1) is recommended, so that ESRs better approximate those shown in Figures 1 and 2.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
7
TL750M, TL751M SERIES
LOW-DROPOUT VOLTAGE REGULATORS
SLVS021H – JANUARY 1988 – REVISED JANUAR Y 2000
PARAMETER MEASUREMENT INFORMATION
Table 1. Compensation for Increased Stability at Low Currents
∆V
ESR
TYP
∆I
L
L
PART NUMBER
∆VL = ∆IL × ESR
MANUFACTURER CAPACITANCE
AVX15 µF0.9 ΩTAJB156M010S1 Ω
KEMET33 µF0.6 ΩT491D336M010AS0.5 Ω
Applied Load
Current
Load
Voltage
ADDITIONAL
RESISTANCE
OUTPUT CAPACITOR
EQUIVALENT SERIES RESISTANCE (ESR)
vs
LOAD CURRENT RANGE
3
CL = 10 µF
2.8
CI = 0.1 µF
2.6
f = 120 Hz
2.4
2.2
2
1.8
1.6
1.4
1.2
1
0.8
0.6
Equivalent Series Resistance (ESR) – Ω
0.4
0.2
Potential Instability Region
0
0.100.20.30.40.5
IL – Load Current Range – A
This Region Not
Recommended for
Operation
Max ESR Boundary
Region of Best Stability
Min ESR
Boundary
0.035
L
C
0.025
Stability –
0.015
EQUIVALENT SERIES RESISTANCE (ESR)
0.04
0.03
0.02
0.01
0.005
0
0123454.53.52.51.50.5
Region of
Best Stability
100 µF
22 µF
10 µF
STABILITY
vs
Not Recommended
Recommended Min ESR
Potential Instability
1000 µF
400 µF
200 µF
1/ESR
Figure 1Figure 2
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
LOW-DROPOUT VOLTAGE REGULATORS
Input current vs Input voltage
SLVS021H – JANUARY 1988 – REVISED JANUAR Y 2000
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
Transient input voltage vs T ime3
Output voltage vs Input voltage4
p
Dropout voltage vs Output current7
Quiescent current vs Output current8
Load transient response9
Line transient response10
p
IO = 10 mA5
IO = 100 mA6
TL750M, TL751M SERIES
60
50
40
30
20
I
V – Transient Input Voltage – V
10
0
0100200
TRANSIENT INPUT VOLTAGE
vs
TIME
TJ = 25°C
VI = 14 V + 46e
for t ≥ 5 ms
tr = 1 ms
300400500
t – Time – ms
(–t/0.230)
Figure 3
OUTPUT VOLTAGE
vs
INPUT VOLTAGE
14
IO = 10 mA
600
TJ = 25°C
12
10
8
6
– Output Voltage – V
O
4
V
2
0
024 6 810
VI – Input Voltage – V
TL75xM12
TL75xM10
TL75xM08
TL75xM05
1214
Figure 4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
9
TL750M, TL751M SERIES
LOW-DROPOUT VOLTAGE REGULATORS
SLVS021H – JANUARY 1988 – REVISED JANUAR Y 2000
TYPICAL CHARACTERISTICS
INPUT CURRENT
vs
INPUT VOLTAGE
200
IO = 10 mA
180
TJ = 25°C
160
140
120
100
80
– Input Current – mAI
I
60
40
20
0
024 6 810
TL75_M05
VI – Input Voltage – V
Figure 5
TL75_M08
TL75_M10
TL75_M12
1214
INPUT CURRENT
vs
INPUT VOLTAGE
350
IO = 100 mA
TJ = 25°C
300
250
200
150
– Input Current – mAI
I
100
50
0
024 6 810
VI – Input Voltage – V
TL75_M05
Figure 6
TL75_M08
TL75_M10
1214
TL75_M12
DROPOUT VOLTAGE
vs
OUTPUT CURRENT
250
TJ = 25°C
225
200
175
150
125
Dropout Voltage – mV
100
75
50
050100150200250
IO – Output Current – mA
Figure 7
300
QUIESCENT CURRENT
vs
OUTPUT CURRENT
12
TJ = 25°C
VI = 14 V
10
8
6
4
– Quiescent Current – mA
Q
I
2
0
020406080100150
IO – Output Current – mA
Figure 8
250350
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
LOW-DROPOUT VOLTAGE REGULATORS
SLVS021H – JANUARY 1988 – REVISED JANUAR Y 2000
TYPICAL CHARACTERISTICS
TL750M, TL751M SERIES
LOAD TRANSIENT RESPONSE
200
100
0
– 100
50
V
I(NOM)
ESR = 2
CL = 10 µF
TJ = 25°C
0
050100150 200250
– Output Voltage – mVV
O
– 200
150
100
– Output Current – mA
O
I
= VO + 1 V
t – Time – µs
Figure 9
300350
LINE TRANSIENT RESPONSE
V
ESR = 2
IL = 20 mA
CL = 10 µF
TJ = 25°C
20 mV/DIV1 V/DIV
– Output Voltage – mVV
O
– Input Voltage – VV
IN
020406080100150
t – Time – µs
Figure 10
I(NOM)
= VO + 1 V
250350
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
11
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