Sample &
Buy
Product
Folder
Support &
Community
Tools &
Software
Technical
Documents
TL499A
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
TL499A Wide-Range Power-Supply Controllers
1 Features
3 Description
•
The TL499A device is an integrated circuit designed
to provide a wide range of adjustable regulated
supply voltages. The regulated output voltage can be
varied from 2.9 V to 30 V by adjusting two external
resistors. When the TL499A is ac-coupled to line
power through a step-down transformer, it operates
as a series DC voltage regulator to maintain the
regulated output voltage. With the addition of a
battery from 1.1 V to 10 V, an inductor, a filter
capacitor, and two resistors, the TL499A operates as
a step-up switching regulator during an AC-line
failure. The adjustable regulated output voltage
makes the TL499A useful for a wide range of
applications. Providing backup power during an ACline failure makes the TL499A extremely useful in
microprocessor memory applications. The TL499AC
is characterized for operation from –20°C to +85°C.
1
•
•
•
•
•
Internal Series-Pass and Step-Up Switching
Regulator
Output Adjustable From 2.9 V to 30 V
1-V to 10-V Input for Switching Regulator
4.5-V to 32-V Input for Series Regulator
Externally Controlled Switching Current
No External Rectifier Required
2 Applications
•
•
•
•
Voltage Boosting
Dual-Supply Voltage Reglation
Battery Back-Ups
Microprocessor Memory Power
Device Information(1)
PART NUMBER
TL499A
PACKAGE (PIN)
BODY SIZE (NOM)
SO (8)
6.20 mm × 5.30 mm
PDIP (8)
9.81 mm × 6.35 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
L = 50 µH
1
SERIES IN1
1
2
3
SW REG IN2
3
4
TL499A
SERIES IN1
REF
OUTPUT
GND (PWR)
SW REG IN2
SW CURRENT
CTRL
SW IN
GND
8
8
OUTPUT
7
6
5
+
CF = 470 µF
CP = 0.01 µF
RE1
RCL = 500 Ω
RE2 = 4.7 kΩ
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
TL499A
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
www.ti.com
Table of Contents
1
2
3
4
5
6
7
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
3
6.1
6.2
6.3
6.4
6.5
6.6
3
3
4
4
4
5
Absolute Maximum Ratings ......................................
ESD Ratings ............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Typical Characteristics ..............................................
Detailed Description .............................................. 6
7.1 Overview ................................................................... 6
7.2 Functional Block Diagram ......................................... 6
7.3 Feature Description................................................... 6
7.4 Device Functional Modes.......................................... 6
8
Application and Implementation .......................... 7
8.1 Application Information.............................................. 7
8.2 Typical Application ................................................... 7
9 Power Supply Recommendations...................... 10
10 Layout................................................................... 11
10.1 Layout Guidelines ................................................. 11
10.2 Layout Example .................................................... 11
11 Device and Documentation Support ................. 12
11.1
11.2
11.3
11.4
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
12
12
12
12
12 Mechanical, Packaging, and Orderable
Information ........................................................... 12
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision G (September 2001) to Revision H
•
2
Page
Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
TL499A
www.ti.com
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
5 Pin Configuration and Functions
P or PS Package
8-Pin PDIP or SO
Top View
SERIES IN1
REF
SW REG IN2
1
8
2
7
3
6
SW CURRENT
CTRL
4
5
OUTPUT
GND (PWR)
SW IN
GND
Pin Functions
PIN
NAME
NO.
I/O
DESCRIPTION
GND
5
—
Signal ground.
GND (PWR)
7
—
Power ground.
OUTPUT
8
O
Regulated output
REF
2
I
Feedback tap for output voltage
SERIES IN1
1
—
Power source for series voltage regulator.
SW CURRENT CTRL
4
I/O
Resistor to ground controls switching current
SW IN
6
I/O
Step up switching inductor node
SW REG IN2
3
—
Power source for step-up switching regulator.
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
MIN
MAX
UNIT
VO
Output voltage (2)
–0.3
35
V
VI1
Input voltage, series regulator
–0.3
35
V
VI2
Input voltage, switching regulator
–0.3
10
V
Blocking-diode reverse voltage
35
V
Blocking-diode forward current
1
A
Power switch current
1
A
SW IN
Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds
260
°C
TJ
Junction temperature
150
°C
Tstg
Storage temperature
150
°C
(1)
(2)
–65
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltage values are with respect to network ground terminal.
6.2 ESD Ratings
VALUE
V(ESD)
(1)
(2)
Electrostatic
discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1)
±200
Charged-device model (CDM), per JEDEC specification JESD22-C101 (2)
±2000
UNIT
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Manufacturing with
less than 500-V HBM is possible with the necessary precautions. Pins listed as ±200-V may actually have higher performance.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
3
TL499A
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
www.ti.com
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
Output voltage, VO
2.9
30
V
Input voltage, VI1 (SERIES IN1)
4.5
32
V
Input voltage, VI2 (SW REG IN2)
1.1
10
V
1.2
28.9
V
Continuous output current, IO
100
mA
Power switch current (at SW IN)
500
mA
1000
Ω
470
µF
50
150
µH
–20
85
°C
Output-to-input differential voltage, switching regulator, VO – VI2 (see
(1)
)
Current-limiting resistor, RCL
150
Filter capacitor
100
Pass capacitor
0.1
Inductor, L (dcr ≤ 0.1 Ω)
Operating free-air temperature, TA
(1)
µF
When operating temperature range is TA≤ 70°C, minimum VO– VI2 is ≥ 1.2 V. When operating temperature range is TA ≤ 85°C,
minimum VO – VI2 is ≥ 1.9 V.
6.4 Thermal Information
TL499A
THERMAL METRIC (1)
P (PDIP)
PS (SO)
UNIT
8 PINS
8 PINS
RθJA
Junction-to-ambient thermal resistance (2) (3)
49.7
110.7
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
38.8
69.0
°C/W
RθJB
Junction-to-board thermal resistance
26.9
55.7
°C/W
ψJT
Junction-to-top characterization parameter
16.1
20.1
°C/W
ψJB
Junction-to-board characterization parameter
26.7
54.9
°C/W
(1)
(2)
(3)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
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 TJ of 150°C can affect reliability.
The package thermal impedance is calculated in accordance with JESD 51-7.
6.5 Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
Voltage deviation (see
(1)
TEST CONDITIONS
VO – VI2
Switching regulator minimum boost
Dropout voltage
Series regulator
Reference voltage (internal)
TA = –20°C to 70°C
1.2
TA = –20°C to 85°C
1.9
Output regulation (of reference voltage)
Switching regulator
TYP
MAX
UNIT
20
30
mV/V
V
VI1 = 15 V, IO = 50 mA
VI1 = 5 V, VO = 3 V, IO = 1 mA
Reference-voltage change with temperature
Output current
(see Figure 3)
MIN
)
IO = 1 mA to 50 mA
1.8
1.2
1.32
5
10
mV/V
10
30
mV/V
VI2 = 1.1 V, VO = 12 V,
RCL = 150 Ω, TA = 25°C
10
VI2 = 1.5 V, VO = 15 V,
RCL = 150 Ω, TA = 25°C
15
VI2 = 6 V, VO = 30 V,
RCL = 150 Ω, TA = 25°C
65
Series regulator
Standby current
(1)
4
V
1.26
V
mA
100
Switching regulator
VI2 = 3 V, VO = 9 V, TA = 25°C
15
80
µA
Series regulator
VI1 = 15 V, VO = 9 V, RE2 = 4.7 kΩ
0.8
1.2
mA
Voltage deviation is the output voltage difference that occurs in a change from series regulation to switching regulation: Voltage
deviation = VO (series regulation) – VO (switching regulation)
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
TL499A
www.ti.com
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
6.6 Typical Characteristics
0.380
1.200
SW IN = 1.1 V
1.150
1.100
0.360
SW IN = 3.0 V
Diode Voltage (V)
Saturation Voltage (V)
0.370
0.350
0.340
0.330
0.320
1.050
1.000
0.950
0.900
I = 0.5 A
0.850
0.800
I = 1.0 A
0.750
0.310
±20
±5
10
25
40
55
Temperature (C)
70
85
C001
0.700
±20
±5
10
25
40
55
70
Temperature (C)
Figure 1. Switch Saturation Voltage vs Temperature
85
C001
Figure 2. Diode Forward Voltage vs Temperature
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
5
TL499A
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
www.ti.com
7 Detailed Description
7.1 Overview
The TL499A provides an adjustable output voltage between 2.9 V and 30 V. The primary power source uses the
internal linear regulator to provide the output voltage. When the primary power source is removed, the secondary
power source is stepped up using the internal switching regulator to provide the output voltage.
7.2 Functional Block Diagram
SW IN
6
3
Blocking Diode
8
OUTPUT
SW REG IN2
Startup
Voltage
Sense
SW REG
Control
7
GND (PWR)
4
SW CURRENT CTRL
Current Sense
–
+
+
2
REF
–
+
1
SERIES IN1
+
Startup
5
GND
7.3 Feature Description
The TL499A has an adjustable output voltage set by feedback provided to REF pin abs an adjustable switching
current is set by value of resistor on SW CURRENT CONTROL pin. The lower resistance provides increased
switching current.
Dual power supply inputs also provide protection against power faults on the main supply of the TL499A.
7.4 Device Functional Modes
The TL499A has two functional modes:
• Linear voltage regulation when SERIES IN1 supply is present.
• Step-up voltage regulation when SERIES IN1 supply is absent.
6
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
TL499A
www.ti.com
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
One or two power sources will be regulated to an output voltage set by two feedback resistors.
8.2 Typical Application
Figure 3 shows the basic configuration of the two power source voltage regulator
L = 50 µH
1
1
SERIES IN1
2
3
3
SW REG IN2
4
TL499A
SERIES IN1
OUTPUT
GND (PWR)
REF
SW REG IN2
SW CURRENT
CTRL
SW IN
GND
8
8
OUTPUT
7
6
+
5
CF = 470 µF
CP = 0.01 µF
RE1
RCL = 500 Ω
RE2 = 4.7 kΩ
Figure 3. TL499A Basic Configuration
8.2.1 Design Requirements
Provide one or more of the following power sources:
• SERIES IN1 voltage greater than OUTPUT voltage by more than dropout voltage
• SW REG IN2 voltage less than OUTPUT voltage
Select RCL value based on Table 1 through Table 5.
Table 1. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With
RCL = 150 Ω
SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2) (V)
OUTPUT
VOLTAGE (V)
1.1
1.2
1.3
1.5
1.7
2
2.5
3
5
6
9
OUTPUT CURRENT (mA)
30
25
20
15
65
90
50
80
100
20
25
30
85
100
100
15
20
30
45
55
100
100
100
100
12
10
15
20
25
30
40
55
70
100
100
10
15
20
25
30
35
45
65
80
100
100
9
20
25
25
35
40
50
70
90
100
100
6
30
35
40
45
55
75
95
100
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
7
TL499A
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
www.ti.com
Typical Application (continued)
Table 1. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With
RCL = 150 Ω (continued)
SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2) (V)
OUTPUT
VOLTAGE (V)
1.1
1.2
1.3
1.5
1.7
2
2.5
3
5
6
9
OUTPUT CURRENT (mA)
(1)
5
35
40
45
55
70
85
100
100
4.5
35
45
50
60
75
95
100
100 (1)
3
55
65 (1)
75 (1)
95 (1)
100 (1)
2.9
60 (1)
70 (1)
75 (1)
100 (1)
100 (1)
Circuit of Figure 1, except:
RCL = 150 Ω
CF = 330 μF
CP = 0.1 μF
The difference between the output and input voltage for these combinations is greater than the minimum output-to-input differentialvoltage specification at 70°C (1.2 V), but less than the minimum at 85°C (1.9 V).
Table 2. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With
RCL = 200 Ω
SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2) (V)
OUTPUT
VOLTAGE (V)
1.1
1.2
1.3
1.5
1.7
2
2.5
3
5
6
9
OUTPUT CURRENT (mA)
30
25
20
15
25
30
100
70
100
70
90
100
10
15
25
35
45
90
100
100
12
10
10
15
20
25
35
45
60
100
100
100
10
15
20
20
25
30
40
55
70
100
100
9
20
20
25
30
35
45
60
80
100
6
25
30
35
45
50
65
90
100
5
30
35
40
55
60
75
100
100
4.5
35
40
45
55
65
85
100
100 (1)
3
50
55 (1)
65 (1)
80 (1)
90 (1)
(1)
(1)
(1)
2.9
(1)
15
50
50
50
(1)
60
65
85
100 (1)
Circuit of Figure 1, except:
RCL = 200 Ω
CF = 330 μF
CP = 0.1 μF
The difference between the output and input voltage for these combinations is greater than the minimum output-to-input differentialvoltage specification at 70°C (1.2 V), but less than the minimum at 85°C (1.9 V).
Table 3. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With
RCL = 300 Ω
SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2) (V)
OUTPUT
VOLTAGE (V)
1.1
1.2
1.3
1.5
1.7
2
2.5
3
5
6
9
OUTPUT CURRENT (mA)
30
25
20
15
8
40
70
40
55
100
10
15
20
55
70
100
10
10
20
30
35
75
95
100
100
12
10
10
10
15
20
25
35
45
95
100
10
15
15
15
20
25
30
45
55
100
100
9
15
15
20
25
30
35
50
60
100
100
6
25
25
30
35
45
55
70
90
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
TL499A
www.ti.com
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
Table 3. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With
RCL = 300 Ω (continued)
SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2) (V)
OUTPUT
VOLTAGE (V)
1.1
1.2
1.3
1.5
5
30
30
35
45
50
65
85
100
4.5
30
35
40
45
55
70
95
100 (1)
3
45
50 (1)
55 (1)
70 (1)
90 (1)
(1)
(1)
(1)
95 (1)
1.7
2
2.5
3
5
6
9
OUTPUT CURRENT (mA)
2.9
(1)
45
(1)
50
60
75
Circuit of Figure 1, except:
RCL = 300 Ω
CF = 330 μF
CP = 0.1 μF
The difference between the output and input voltage for these combinations is greater than the minimum output-to-input differentialvoltage specification at 70°C (1.2 V), but less than the minimum at 85°C (1.9 V).
Table 4. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With
RCL = 510 Ω
SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2) (V)
OUTPUT
VOLTAGE (V)
1.1
1.2
1.3
1.5
1.7
2
2.5
3
5
6
9
OUTPUT CURRENT (mA)
30
30
50
25
25
40
75
20
40
55
90
15
15
20
55
70
100
10
15
25
35
65
80
100
10
20
25
30
40
70
85
75
100
12
10
9
10
10
10
15
20
25
35
45
6
15
20
20
25
30
35
50
60
5
20
20
35
30
35
45
55
70
4.5
25
25
30
35
40
50
65
90 (1)
3
35
35 (1)
40 (1)
50 (1)
75 (1)
(1)
(1)
(1)
80 (1)
2.9
(1)
35
(1)
35
40
55
Circuit of Figure 1, except:
RCL = 510 Ω
CF = 330 μF
CP = 0.1 μF
The difference between the output and input voltage for these combinations is greater than the minimum output-to-input differentialvoltage specification at 70°C (1.2 V), but less than the minimum at 85°C (1.9 V).
Table 5. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With
RCL = 1 kΩ
SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2) (V)
OUTPUT
VOLTAGE (V)
1.1
1.2
1.3
1.5
1.7
2
2.5
3
5
6
9
OUTPUT CURRENT (mA)
30
35
25
35
50
20
35
60
15
12
10
9
30
45
65
85
20
40
45
15
25
40
55
45
60
10
10
15
25
30
6
10
10
10
15
20
20
30
35
5
10
10
15
20
20
25
35
40
4.5
15
15
15
20
25
30
40
45 (1)
3
20
25 (1)
25 (1)
30 (1)
35 (1)
(1)
(1)
(1)
45 (1)
2.9
(1)
10
20
(1)
25
25
30
Circuit of Figure 1, except:
RCL = 1 kΩ
CF = 330 μF
CP = 0.1 μF
The difference between the output and input voltage for these combinations is greater than the minimum output-to-input differentialvoltage specification at 70°C (1.2 V), but less than the minimum at 85°C (1.9 V).
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
9
TL499A
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
www.ti.com
8.2.2 Detailed Design Procedure
Select the values for RE1and RE2 using Equation 1:
VOUT = REF × ( 1 + RE1/ RE2)
(1)
8.2.3 Application Curve
1.250
Drop Out Voltage (V)
1.245
1.240
1.235
1.230
1.225
1.220
1.215
±20
±5
10
25
40
55
70
Temperature (C)
85
C001
IOUT = 50 mA
Figure 4. Dropout Voltage vs Temperature
9 Power Supply Recommendations
See Recommended Operating Conditions for allowable range for the power supply. Bypass capacitors must be
placed near device supply pins.
10
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
TL499A
www.ti.com
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
10 Layout
10.1 Layout Guidelines
The switching nodes at pins 3, 6, 7, and 8 must use short traces with ground and power planes for reduced noise
and improved performance.
10.2 Layout Example
CP
GND
Plane
RE2
RE1
VOUT
C2
To IN1 supply
C1
IN2 Plane
1 IN1
OUTPUT 8
2 REF
GND PWR 7
3 IN2
SW IN 6
CF
GND Plane
IN2
Plane
RCL
GND
Plane
4 SW CC
GND 5
GND
Plane
Figure 5. Typical Layout
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
11
TL499A
SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015
www.ti.com
11 Device and Documentation Support
11.1 Community Resources
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of
Use.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
11.2 Trademarks
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
11.3 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
11.4 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
12 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
12
Submit Documentation Feedback
Copyright © 1984–2015, Texas Instruments Incorporated
Product Folder Links: TL499A
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)
TL499ACP
ACTIVE
PDIP
P
8
50
RoHS & Green
NIPDAU
N / A for Pkg Type
-20 to 85
TL499ACP
Samples
TL499ACPSR
ACTIVE
SO
PS
8
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-20 to 85
T499A
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
工商网监
湘ICP备2023018690号
