Texas Instruments TL 750 M – Q 1 INSTALLATION INSTRUCTIONS
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AUTOMOTIVE LOW-DROPOUT VOLTAGE REGULATORS
TL750M-Q1, TL751M-Q1 Series
SGLS312F – SEPTEMBER 2005 – REVISED JUNE 2007
FEATURES
• Low Quiescent Current
• Qualified for Automotive Applications • TTL- and CMOS-Compatible Enable on
• Customer-Specific Configuration Control Can
TL751M Series
Be Supported Along With Major-Change • Load-Dump Protection
Approval
• Low Dropout Voltage, Less Than 0.6 V at
750 mA
• Overvoltage Protection
• Internal Thermal Overload Protection
• Internal Overcurrent-Limiting Circuitry
DESCRIPTION
The TL750M and TL751M series are low-dropout positive voltage regulators specifically designed for automotive
applications. 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 load-dump and
reverse-battery conditions. Load-dump protection is up to a maximum of 60 V at the input of the device. Low
quiescent current, even during full-load conditions, makes the TL750M and TL751M series ideal for use in
applications that are permanently connected to the vehicle battery.
The TL750M and TL751M series offers 5-V and 8-V options. The TL751M series has the addition of an enable
( ENABLE) input. The ENABLE input gives complete control over power up, allowing sequential power up or
shutdown. When ENABLE is high, the regulator output is placed in the high-impedance state. The ENABLE
input is TTL and CMOS compatible.
The TL750Mxx and TL751Mxx are characterized for operation over the virtual junction temperature range –40 ° C
to 125 ° C.
AVAILABLE OPTIONS
V
T
J
–40 ° C to 125 ° C
O
NOM (V)
5 TO-263-3/KTT, Reel of 500 TL750M05QKTTRQ1 TL750M05Q1
8 TO-263-3/KTT, Reel of 500 TL750M08QKTTRQ1 TL750M08Q1
5 TO-263-5/KTT, Reel of 500 TL751M05QKTTRQ1 TL751M05Q1
8 TO-263-5/KTT, Reel of 500 TL751M08QKTTRQ1 TL751M08Q1
PACKAGE ORDERABLE PART NUMBER TOP SIDE MARKING
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2007, Texas Instruments Incorporated
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TL750M. . . KTT (3 Pin Shown)
(TOP VIEW)
OUTPUT
COMMON
INPUT
COMMON
O
C
I
TL751M. . . KTT (5 Pin Shown)
(TOP VIEW)
NC
OUTPUT
COMMON
INPUT
ENABLE
O
C
I
N
E
Enable
Bandgap
Current
Limiting
_
+
Overvoltage/
Thermal
Shutdown
ENABLE
OUTPUT
COMMON
INPUT
28 V
TL750M-Q1, TL751M-Q1 Series
SGLS312F – SEPTEMBER 2005 – REVISED JUNE 2007
A. The COMMON terminal is in electrical contact with the mounting base.
NC – No internal connection
TL751Mxx FUNCTIONAL BLOCK DIAGRAM
2
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TL750M-Q1, TL751M-Q1 Series
SGLS312F – SEPTEMBER 2005 – REVISED JUNE 2007
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
Continuous input voltage 26 V
Transient input voltage (see Figure 4 ) 60 V
Continuous reverse input voltage –15 V
Transient reverse input voltage t = 100 ms –50 V
θ
JA
T
J
T
stg
Package thermal impedance
Virtual junction temperature range –40 ° C to 150 ° C
Storage temperature range –65 ° C to 150 ° C
(2) (3)
(1) 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.
(2) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD= (TJ(max) – TA)/ θJA. Operating at the absolute maximum TJof 150 ° C can impact reliability. Due to 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.
(3) The package thermal impedance is calculated in accordance with JESD 51.
RECOMMENDED OPERATING CONDITIONS
V
I
V
IH
V
IL
I
O
T
J
Input voltage V
High-level ENABLE input voltage TL751Mxx 2 15 V
Low-level ENABLE input voltage TL751Mxx 0 0.8 V
Output current TL75xMxx 750 mA
Operating virtual junction temperature TL75xMxx –40 125 ° C
(1)
VALUE / UNIT
KTT package (3 pin) 26.9 ° C/W
KTT package (5 pin) 26.5 ° C/W
MIN MAX UNIT
TL75xM05 6 26
TL75xM08 9 26
TL751Mxx ELECTRICAL CHARACTERISTICS
VI= 14 V, IO= 300 mA, TJ= 25 ° C
PARAMETER UNIT
Response time, ENABLE to output (start-up) 50 µs
TL751Mxx
TYP
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TL750M-Q1, TL751M-Q1 Series
SGLS312F – SEPTEMBER 2005 – REVISED JUNE 2007
TL750M05/TL751M05 ELECTRICAL CHARACTERISTICS
VI= 14 V, IO= 300 mA, ENABLE at 0 V for TL751M05, TJ= –40 ° C to 125 ° C (unless otherwise noted)
PARAMETER TEST CONDITIONS UNIT
Output voltage VI= 6 V to 26 V 4.85 5 5.15 V
Line regulation mV
Power-supply ripple rejection VI= 8 V to 18 V, f = 120 Hz 55 dB
Load regulation IO= 5 mA to 750 mA 20 50 mV
Dropout voltage
Current consumption
Iq= II– I
Shutdown current (TL751M05 only) ENABLE VIH≥ 2 V 200 µA
(1) 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 4 .
(2) Measured when the output voltage, VO, has dropped 100 mV from the nominal value obtained at VI= 14 V
(2)
O
VI= 9 V to 16 V, IO= 250 mA 10 25
VI= 6 V to 26 V, IO= 250 mA 12 50
IO= 500 mA, TJ= 25 ° C 0.5
IO= 750 mA, TJ= 25 ° C 0.65
IO= 750 mA 60 75
IO= 10 mA 5
(1)
TL750M05
TL751M05
MIN TYP MAX
V
mA
TL750M08/TL751M08 ELECTRICAL CHARACTERISTICS
VI= 14 V, IO= 300 mA, ENABLE at 0 V for TL751M08, TJ= –40 ° C to 125 ° C (unless otherwise noted)
PARAMETER TEST CONDITIONS UNIT
Output voltage VI= 6 V to 26 V 7.76 8 8.24 V
Line regulation mV
Power-supply ripple rejection VI= 11 V to 21 V, f = 120 Hz 55 dB
Load regulation IO= 5 mA to 750 mA 24 80 mV
Dropout voltage
Current consumption
Iq= II– I
Shutdown current (TL751M08 only) ENABLE VIH≥ 2 V 200 µA
(1) 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 4 .
(2) Measured when the output voltage, VO, has dropped 100 mV from the nominal value obtained at VI= 14 V
(2)
O
VI= 10 V to 17 V, IO= 250 mA 12 40
VI= 9 V to 26 V, IO= 250 mA 15 68
IO= 500 mA, TJ= 25 ° C 0.5
IO= 750 mA, TJ= 25 ° C 0.65
IO= 750 mA, TJ= 25 ° C 60 75
IO= 10 mA 5
(1)
TL750M08
TL751M08
MIN TYP MAX
V
mA
4
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