LITIX™ Basic
TLD1125EL
1 Channel High-Side Current Source
1
Package
PG-SSOP-14
Marking
TLD1125
Overview
Applications
•
Exterior LED lighting applications such as tail/brake light, turn indicator,
position light, side marker,...
•
Interior LED lighting applications such as ambient lighting, interior
illumination and dash board lighting.
GND
4.7nF**
ISO-Pulse
protection circuit
depending on
requirements
VS
CVS =4.7nF
BRAKE
10kΩ
Cmod =2.2µF
TAIL
EN
PWMI
Internal
supply
Thermal
protection
Output
control
Current
adjustment
Status
OUT
* In case PWM via VS is performed
** For EMI improvement if required
GND
CST =100pF**
470kΩ*
RSET
CD
TLD1125EL
ST
IN_SET
RPWMI
CPWMI
D
to other LITIX™ Basic
Application Diagram with TLD1125EL
Data Sheet
www.infineon.com
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Overview
Basic Features
•
1 Channel device with integrated output stage (current source), optimized to drive LEDs with output
current up to 360 mA
•
Low current consumption in sleep mode
•
PWM-operation supported via VS- and EN-pin
•
Integrated PWM dimming engine to provide two LED brightness levels without external logic (e.g. µC)
•
Output current adjustable via external low power resistor and possibility to connect PTC resistor for LED
protection during over temperature conditions
•
Reverse polarity protection and overload protection
•
Undervoltage detection
•
Open load and short circuit to GND diagnosis
•
Wide temperature range: -40°C < Tj < 150°C
•
PG-SSOP-14 package with exposed heatslug
Description
The LITIX™ Basic TLD1125EL is a one channel high side driver IC with integrated output stage. It is designed to
control LEDs with a current up to 360 mA. In typical automotive applications the device is capable to drive i.e.
3 red LEDs with a current up to 180 mA, which is limited by thermal cooling aspects. The output current is
controlled practically independent of load and supply voltage changes.
Table 1
Product Summary
Parameter
Symbol
Value
Operating voltage range
VS(nom)
5.5 V ... 40 V
Maximum voltage
VS(max)
VOUT(max)
40 V
Nominal output (load) current
IOUT(nom)
180 mA when using a supply voltage range of 8 V - 18 V (e.g.
Automotive car battery). Currents up to IOUT(max) possible in
applications with low thermal resistance RthJA
Maximum output (load) current
IOUT(max)
360 mA; depending on thermal resistance RthJA
Output current accuracy at RSET = 12 kΩ
kLT
2250 ± 7%
Current consumption in sleep mode IS(sleep,typ)
0.1 µA
Protective Functions
•
ESD protection
•
Under voltage lock out
•
Over Load protection
•
Over Temperature protection
•
Reverse Polarity protection
Diagnostic Functions
•
OL detection
•
SC to Vs (indicated by OL diagnosis)
•
SC to GND detection
Data Sheet
2
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Block Diagram
Block Diagram
VS
2
EN
Internal
supply
Thermal
protection
Output
control
Current
adjustment
Status
PWMI
OUT
TLD1125EL
Figure 1
Data Sheet
GND
IN_SET
ST
D
Basic Block Diagram
3
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Pin Configuration
3
Pin Configuration
3.1
Pin Assignment
Figure 2
Data Sheet
VS
1
VS
2
EN
3
NC
4
PWMI
14
NC
13
NC
12
OUT
11
NC
5
10
ST
IN_SET
6
9
GND
D
7
8
NC
TLD1125EL
EP
Pin Configuration
4
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Pin Configuration
3.2
Pin Definitions and Functions
Pin
Symbol
Input/
Output
Function
1, 2
VS
–
Supply Voltage; battery supply, connect a decoupling capacitor (100 nF - 1 µF)
to GND
3
EN
I
Enable pin
4
NC
–
Pin not connected
5
PWMI
I/O
PWM Input
6
IN_SET
I/O
Input / SET pin; Connect a low power resistor to adjust the output current
7
D
I/O
Delay for open load detection
8
NC
–
Pin not connected
–
1)
9
GND
10
ST
I/O
Status pin
11
NC
–
Pin not connected
12
OUT
O
Output
13
NC
–
Pin not connected
14
NC
–
Pin not connected
–
1)
Exposed
Pad
GND
Ground
Exposed Pad; connect to GND in application
1) Connect all GND-pins together.
Data Sheet
5
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
General Product Characteristics
4
General Product Characteristics
4.1
Absolute Maximum Ratings
Absolute Maximum Ratings 1)
Tj = -40°C to +150°C; all voltages with respect to ground, positive current flowing into pin for input pins (I), positive
currents flowing out of the I/O and output pins (O) (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Max.
VS
VEN
VEN(VS)
VEN - VOUT
-16
40
V
–
-16
40
V
–
VS - 40
VS + 16
V
–
-16
40
V
–
VOUT
VPS
-1
40
V
–
-16
40
V
–
-0.3
6
V
–
-0.3
6
V
–
-0.3
6
V
–
-0.3
6
V
–
Voltages
4.1.1
Supply voltage
4.1.2
Input voltage EN
4.1.3
Input voltage EN related to VS
4.1.4
Input voltage EN related to VOUT
VEN - VOUT
4.1.5
Output voltage
4.1.6
Power stage voltage
VPS = VS - VOUT
4.1.9
D voltage
4.1.10
Status voltage
VPWMI
VIN_SET
VD
VST
4.1.11
IN_SET current
IIN_SET
–
–
2
8
mA
–
Diagnosis output
4.1.12
D current
-0.5
0.5
mA
–
4.1.13
Output current
ID
IOUT
–
390
mA
–
Tj
Tstg
-40
150
°C
–
-55
150
°C
–
4.1.7
Input voltage PWMI
4.1.8
IN_SET voltage
Currents
Temperatures
4.1.14
Junction temperature
4.1.15
Storage temperature
ESD Susceptibility
4.1.16
ESD resistivity to GND
VESD
-2
2
kV
Human Body Model
(100 pF via 1.5 kΩ)2)
4.1.17
ESD resistivity all pins to GND
-500
500
V
CDM3)
4.1.18
ESD resistivity corner pins to GND
VESD
VESD
-750
750
V
CDM3)
1) Not subject to production test, specified by design
2) ESD susceptibility, Human Body Model “HBM” according to ANSI/ESDA/JEDEC JS-001-2011
3) ESD susceptibility, Charged Device Model “CDM” according to JESD22-C101E
Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in
the data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions
are not designed for continuous repetitive operation.
Data Sheet
6
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
General Product Characteristics
4.2
Pos.
Functional Range
Parameter
Symbol
Limit Values
Min.
Max.
Unit
Conditions
4.2.19
Supply voltage range for
normal operation
VS(nom)
5.5
40
V
–
4.2.20
Power on reset threshold
VS(POR)
–
5
V
VEN = VS
RSET = 12 kΩ
IOUT = 80% IOUT(nom)
VOUT = 2.5 V
4.2.21
Junction temperature
Tj
-40
150
°C
–
Note: Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics table.
4.3
Pos.
Thermal Resistance
Parameter
4.3.1
Junction to Case
4.3.2
Junction to Ambient 1s0p board
4.3.3
Junction to Ambient 2s2p board
Symbol
Limit Values
RthJC
RthJA1
Min.
Typ.
Max.
–
8
10
–
–
RthJA2
–
–
61
56
45
43
Unit
Conditions
K/W
1) 2)
K/W
1) 3)
K/W
1) 4)
–
–
–
–
Ta = 85 °C
Ta = 135 °C
Ta = 85 °C
Ta = 135 °C
1) Not subject to production test, specified by design. Based on simulation results.
2) Specified RthJC value is simulated at natural convection on a cold plate setup (all pins and the exposed Pad are fixed to ambient
temperature). Ta = 85°C, Total power dissipation 1.5 W.
3) The RthJA values are according to Jedec JESD51-3 at natural convection on 1s0p FR4 board. The product (chip + package) was
simulated on a 76.2 x 114.3 x 1.5 mm3 board with 70 µm Cu, 300 mm2 cooling area. Total power dissipation 1.5 W distributed
statically and homogenously over power stage.
4) The RthJA values are according to Jedec JESD51-5,-7 at natural convection on 2s2p FR4 board. The product (chip + package) was
simulated on a 76.2 x 114.3 x 1.5 mm3 board with 2 inner copper layers (outside 2 x 70 µm Cu, inner 2 x 35 µm Cu). Where applicable,
a thermal via array under the exposed pad contacted the first inner copper layer. Total power dissipation 1.5 W distributed
statically and homogenously over power stage.
Data Sheet
7
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
EN Pin
5
EN Pin
The EN pin is a dual function pin:
Internal Supply
Output Control
EN
V EN
Figure 3
Block Diagram EN pin
Note: The current consumption at the EN-pin IEN needs to be added to the total device current consumption. The
total current consumption is the sum of the currents at the VS-pin IS and the EN-pin IEN.
5.1
EN Function
If the voltage at the pin EN is below a threshold of VEN(off) the LITIX™ Basic IC will enter Sleep mode. In this state
all internal functions are switched off, the current consumption is reduced to IS(sleep). A voltage above VEN(on) at
this pin enables the device after the Power on reset time tPOR.
VS
V EN
IOU T
t
t
tPOR
100%
80%
t
Figure 4
Data Sheet
Power on reset
8
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
EN Pin
5.2
Internal Supply Pin
The EN pin can be used to supply the internal logic. There are two typical application conditions, where this
feature can be used:
1) In “DC/DC control Buck” configurations, where the voltage Vs can be below 5.5V.
2) In configurations, where a PWM signal is applied at the Vbatt pin of a light module. The buffer capacitor CBUF
is used to supply the LITIX™ Basic IC during Vbatt low (Vs low) periods. This feature can be used to minimize
the turn-on time to the values specified in Pos. 11.2.15. Otherwise, the power-on reset delay time tPOR
(Pos. 6.3.8) has to be considered.
The capacitor can be calculated using the following formula:
I EN LS
C BUF = tLOW max -------------------------------------------------V S – V D1 – V S POR
(1)
See also a typical application drawing in Chapter 12.
VBATT
VS
D1
GND
CBUF
EN
Internal
supply
Thermal
protection
OUT
Current
adjustment
GND
RSET
IN_SET
Output
control
LITIX™ Basic
Figure 5
Data Sheet
External circuit when applying a fast PWM signal on VBATT
9
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
EN Pin
V EN
t
V BATT
IOU T
t
tON (VS)
100%
80%
Switch off behavior depends on
V BATT and load characteristics
20%
t
Figure 6
Typical waveforms when applying a fast PWM signal on VBATT
The parameter tON(VS) is defined at Pos. 11.2.15. The parameter tOFF(VS) depends on the load and supply voltage
VBATT characteristics.
5.3
EN Unused
In case of an unused EN pin, there are two different ways to connect it:
5.3.1
EN - Pull Up to VS
The EN pin can be connected with a pull up resistor (e.g. 10 kΩ) to Vs potential. In this configuration the
LITIX™ Basic IC is always enabled.
5.3.2
EN - Direct Connection to VS
The EN pin can be connected directly to the VS pin (IC always enabled). This configuration has the advantage
(compared to the configuration described in Chapter 5.3.1) that no additional external component is
required.
Data Sheet
10
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
PWMI Pin
6
PWMI Pin
The PWMI pin is designed as a dual function pin.
IPWMI(L)
Output Control
PWMI
VPWMI
Figure 7
Block Diagram PWMI pin
The pin can be used for PWM-dimming via a push-pull stage of a micro controller, which is connecting the
PWMI-pin to a low or high potential.
Note: The micro controller’s push-pull stage has to able to sink currents according to Pos. 6.3.18 to activate the
device.
Furthermore, the device offers also an internal PWM unit by connecting an external-RC network according to
Figure 10.
6.1
PWM Dimming
A PWM signal can be applied at the PWMI pin for LED brightness regulation. The dimming frequency can be
adjusted in a very wide range (e.g. 400 Hz). The PWMI pin is low active. Turn on/off thresholds VPWMI(L) and
VPWMI(H) are specified in parameters Pos. 6.3.15 and Pos. 6.3.16.
V PWMI
IOU T
tON (PWMI )
tOFF(PWMI )
t
100%
80%
20%
t
Figure 8
Data Sheet
Turn on and Turn off time for PWMI pin usage
11
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
PWMI Pin
6.2
Internal PWM Unit
Connecting a resistor and a capacitor in parallel on the PWMI pin enables the internal pulse width modulation
unit. The following figure shows the charging and discharging defined by the RC-network according to
Figure 10 and the internal PWM unit.
VPWMI
Outputs OFF
VPWMI(H)
Internal PWM
VPWMI(L)
Outputs ON
t
OUTON
Figure 9
OUT - OFF
OUTON
OUT - OFF
OUTON
OUT - OFF
OUTON
OUT - OFF
PWMI operating voltages
The PWM Duty cycle (DC) and the PWM frequency can be adjusted using the formulas below. Please use only
typical values of VPWMI(L), VPWMI(H) and IPWMI(on) for the calculation of tPWMI(on) and tPWMI(off) (as described in
Pos. 6.3.15 to Pos. 6.3.18).
V PWMI H – I PWMI on R PWMI
-
t PWMI on = –R PWMI C PWMI LN ------------------------------------------------------------------------------ V PWMI L – I PWMI on R PWMI
(2)
V PWMI H
-
t PWMI off = R PWMI C PWMI LN ------------------------ V PWMI L
(3)
1
f PWMI = --------------------------------------------------------t PWMI on + tPWMI off
(4)
DC = tPWMI on f PWMI
(5)
Out of this equations the required CPWMI and RPWMI can be calculated:
t
t
PWMI off
PWMI on
------------------------
V PWMI L
– I PWMI on t PWMI off --------------------------
V PWMI H
–1
C PWMI = ------------------------------------------------------------------------------------------------------------------------------------------------------------------tPWMI on
-----------------------t
V PWMI L
V PWMI L PWMI off
LN -------------------------- V PWMI L --------------------------
– V PWMI H
V PWMI H
V PWMI H
t PWMI off
RPWMI = -------------------------------------------------------------- V PWMI H
-
C PWMI LN ------------------------ V PWMI L
Data Sheet
(6)
(7)
12
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
PWMI Pin
See Figure 10 for a typical external circuitry.
Note: In case of junction temperatures above Tj(CRT) (Pos. 11.2.16) the device provides a temperature dependent
current reduction feature as descirbed in Chapter 11.1.1. In case of output current reduction IIN_SET is
reduced as well, which leads to increased turn on-times tPWMI(on), because the CPWMI is charged slower. The
turn off-time tPWMI(off) remains the same.
VBATT
VS
10 kΩ
GND
EN
Data Sheet
Output
control
OUT
Current
adjustment
GND
IN_SET
RSET
Figure 10
Thermal
protection
D
CD
CPWM I
RPWM I
PWMI
Internal
supply
LITIX™ Basic
Typical circuit using internal PWM unit
13
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
PWMI Pin
6.3
Electrical Characteristics Internal Supply / EN / PWMI Pin
Electrical Characteristics Internal Supply / EN / PWMI pin
Unless otherwise specified: VS = 5.5 V to 40 V, Tj = -40°C to +150°C, RSET = 12 kΩ all voltages with respect to
ground, positive current flowing into pin for input pins (I), positive currents flowing out of the I/O and output
pins (O) (unless otherwise specified)
Pos.
Parameter
Symbol
6.3.1
Current consumption,
sleep mode
IS(sleep)
6.3.2
Current consumption,
active mode
IS(on)
Limit Values
Min.
Typ.
Max.
–
0.1
2
–
–
–
6.3.3
Current consumption,
device disabled via ST
–
–
–
6.3.4
–
–
–
6.3.5
Current consumption,
device disabled via PWMI
–
–
–
Data Sheet
–
–
–
14
1)
VEN = 0.5 V
Tj < 85 °C
VS = 18 V
VOUT = 3.6 V
mA
2)
VPWMI= 0.5 V
IIN_SET = 0 µA
Tj < 105 °C
VS = 18 V
VOUT = 3.6V
VEN = 5.5 V
VEN = 18 V
1)
REN = 10 kΩ between
VS and EN-pin
mA
2)
VS = 18 V
Tj < 105 °C
VST = 5 V
VEN = 5.5 V
VEN = 18 V
1)
REN = 10 kΩ between
VS and EN-pin
mA
2)
VS = 18 V
Tj < 105 °C
VIN_SET = 5 V
VEN = 5.5 V
VEN = 18 V
1)
REN = 10 kΩ between
VS and EN-pin
mA
2)
1.4
0.7
1.4
IS(dis,PWMI)
–
–
–
µA
1.4
0.65
1.4
Current consumption,
IS(dis,IN_SET)
device disabled via IN_SET
–
–
–
Conditions
1.4
0.75
1.5
IS(dis,ST)
–
–
–
Unit
1.6
0.75
1.6
VS = 18 V
Tj < 105 °C
VPWMI= 3.4 V
VEN = 5.5 V
VEN = 18 V
1)
REN = 10 kΩ between
VS and EN-pin
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
PWMI Pin
Electrical Characteristics Internal Supply / EN / PWMI pin (cont’d)
Unless otherwise specified: VS = 5.5 V to 40 V, Tj = -40°C to +150°C, RSET = 12 kΩ all voltages with respect to
ground, positive current flowing into pin for input pins (I), positive currents flowing out of the I/O and output
pins (O) (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Min.
6.3.6
Current consumption,
active mode in fault
detection condition with
ST-pin unconnected
–
–
–
Current consumption,
active mode in fault
detection condition with
ST-pin connected to GND
Conditions
mA
2)
VS = 18 V
Tj < 105 °C
RSET = 12 kΩ
VPWMI= 0.5 V
VOUT = 18 V or 0 V
VEN = 5.5 V
VEN = 18 V
1)
REN = 10 kΩ between
VS and EN-pin
mA
2)
VS = 18 V
Tj < 105 °C
RSET = 12 kΩ
VPWMI= 0.5 V
VOUT = 18 V or 0 V
VST = 0 V
VEN = 5.5 V
VEN = 18 V
1)
REN = 10 kΩ between
VS and EN-pin
Max.
IS(fault,STu)
–
–
–
6.3.7
Typ.
Unit
1.7
1.1
1.8
IS(fault,STG)
–
–
–
–
–
–
6.0
4.9
5.9
Power-on reset delay time tPOR
–
–
25
µs
1)
6.3.9
Required supply voltage
for output activation
VS(on)
–
–
4
V
VEN = 5.5 V
VOUT = 3 V
IOUT = 50% IOUT(nom)
6.3.10
Required supply voltage
for current control
VS(CC)
–
–
5.2
V
VEN = 5.5 V
VOUT = 3.6 V
IOUT ≥ 90% IOUT(nom)
6.3.11
EN turn on threshold
VEN(on)
–
–
2.5
V
–
6.3.12
EN turn off threshold
VEN(off)
0.8
–
–
V
–
mA
1)
VS = 4.5 V
Tj < 105 °C
VEN = 5.5 V
mA
Tj < 105 °C
VS = 13.5 V, VEN = 5.5 V
VS = 18 V, VEN = 5.5 V
VS = VEN = 18 V
1)
VS = 18 V, REN = 10 kΩ
between VS and EN-pin
6.3.8
3)
6.3.13
EN input current during
low supply voltage
IEN(LS)
6.3.14
EN high input current
IEN(H)
Data Sheet
–
–
–
–
–
–
–
–
–
–
15
1.8
0.1
0.1
1.65
0.45
VS = VEN = 0 →13.5 V
VOUT(nom) = 3.6 ± 0.3V
IOUT = 80% IOUT(nom)
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
PWMI Pin
Electrical Characteristics Internal Supply / EN / PWMI pin (cont’d)
Unless otherwise specified: VS = 5.5 V to 40 V, Tj = -40°C to +150°C, RSET = 12 kΩ all voltages with respect to
ground, positive current flowing into pin for input pins (I), positive currents flowing out of the I/O and output
pins (O) (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
Unit
Conditions
6.3.15
PWMI (active low)
Switching low threshold
(output on)
VPWMI(L)
1.5
1.85
2.3
V
1)4)
6.3.16
PWMI(active low)
Switching high threshold
(output off)
VPWMI(H)
2.45
2.85
3.2
V
1)4)5)
VS = 8...18 V
6.3.17
∆VPWMI
PWMI
Switching threshold
difference VPWMI(H) - VPWMI(L)
0.75
1
1.10
V
1)4)5)
VS = 8...18 V
6.3.18
PWMI (active low)
Low input current with
active channels (voltage
8 V
Tj = 25...150 °C
VS = VOUT (OL) or
VOUTx = 0 V (SC)
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Load Diagnosis
Electrical Characteristics IN_SET pin and Load Diagnosis (cont’d)
Unless otherwise specified: VS = 5.5 V to 40 V, Tj = -40°C to +150°C, RSET = 12 kΩ, all voltages with respect to ground,
positive current flowing into pin for input pins (I), positive currents flowing out of the I/O and output pins (O) (unless
otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
Unit
Conditions
10.3.3
IN_SET open load/short
circuit current
IIN_SET(OL/SC)
1.5
–
7.4
mA
1)
10.3.4
ST device turn on
threshold (active low) in
case of voltage applied
from external (ST-pin
acting as input)
VST(L)
0.8
–
–
V
–
10.3.5
ST device turn off
threshold (active low) in
case of voltage applied
from external (ST-pin
acting as input)
VST(H)
–
–
2.5
V
–
10.3.6
ST pull down current
IST(PD)
–
–
15
µA
10.3.7
ST open load/short circuit VST(OL/SC)
voltage (ST-pin acting as
diagnosis output)
4
–
5.5
V
10.3.8
ST open load/short circuit IST(OL/SC)
current (ST-pin acting as
diagnosis output)
100
–
220
µA
10.3.9
D high threshold
2.45
2.85
3.2
V
10.3.10
D output current
VD(th)
ID
1
2
3
µA
10.3.11
OL detection voltage
VPS(OL) = VS - VOUT
VPS(OL)
0.2
–
0.4
V
VEN = 5.5 V
VST= 0.8 V
1)
VS > 8 V
Tj = 25...150 °C
RST = 470 kΩ
VS = VOUT (OL) or
VOUT = 0 V (SC)
1)
VS > 8 V
Tj = 25...150 °C
VST = 2.5 V
VS = VOUT (OL) or
VOUT = 0 V (SC)
VS > 8 V
VS > 8 V
VD = 2 V
VS > 8 V
10.3.12
Short circuit to GND
detection threshold
VOUT(SC)
0.8
–
1.4
V
VS > 8 V
10.3.13
IN_SET diagnosis reset
time
tIN_SET(reset)
–
5
20
µs
1)
10.3.14
SC detection current in
case of unconnected STpin
IOUT(SC,STu)
100
200
300
µA
VS > 8 V
VOUT= 0 V
Data Sheet
27
VS > 8 V
Tj = 25...150 °C
VIN_SET = 4 V
VS = VOUT (OL) or
VOUT = 0 V (SC)
VS > 8 V
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Load Diagnosis
Electrical Characteristics IN_SET pin and Load Diagnosis (cont’d)
Unless otherwise specified: VS = 5.5 V to 40 V, Tj = -40°C to +150°C, RSET = 12 kΩ, all voltages with respect to ground,
positive current flowing into pin for input pins (I), positive currents flowing out of the I/O and output pins (O) (unless
otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
Unit
Conditions
10.3.15
SC detection current in
case of ST-pin shorted to
GND
IOUT(SC,STG)
0.1
2
4.75
mA
VS > 8 V
VOUT= 0 V
VST = 0 V
10.3.16
IN_SET activation current
without turn on of output
stage
IIN_SET(act)
2
–
15
µA
See Figure 15
1) Not subject to production test, specified by design
Data Sheet
28
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Power Stage
11
Power Stage
The output stage is realized as high side current source with a current of 360 mA. During off state the leakage
current at the output stage is minimized in order to prevent a slightly glowing LED.
The maximum current of the channel is limited by the power dissipation and used PCB cooling areas (which
results in the applications RthJA).
For an operating current control loop the supply and output voltages according to the following parameters
have to be considered:
•
•
•
Required supply voltage for current control VS(CC), Pos. 6.3.10
Voltage drop over output stage during current control VPS(CC), Pos. 11.2.6
Required output voltage for current control VOUT(CC), Pos. 11.2.7
11.1
Protection
The device provides embedded protective functions, which are designed to prevent IC destruction under fault
conditions described in this data sheet. Fault conditions are considered as “outside” normal operating range.
Protective functions are neither designed for continuous nor for repetitive operation.
11.1.1
Over Load Behavior
An over load detection circuit is integrated in the LITIX™ Basic IC. It is realized by a temperature monitoring of
the output stage (OUT).
As soon as the junction temperature exceeds the current reduction temperature threshold Tj(CRT) the output
current will be reduced by the device by reducing the IN_SET reference voltage VIN_SET(ref). This feature avoids
LED’s flickering during static output overload conditions. Furthermore, it protects LEDs against over
temperature, which are mounted thermally close to the device. If the device temperature still increases, the
output current decreases close to 0 A. As soon as the device cools down the output current rises again.
IOU T
V IN_ SET
Tj (C R T)
Figure 25
Tj
Output current reduction at high temperature
Note: This high temperature output current reduction is realized by reducing the IN_SET reference voltage
voltage (Pos. 10.3.1). In case of very high power loss applied to the device and very high junction
temperature the output current may drop down to IOUT = 0 mA, after a slight cooling down the current
increases again.
11.1.2
Reverse Battery Protection
The TLD1125EL has an integrated reverse battery protection feature. This feature protects the driver IC itself,
but also connected LEDs. The output reverse current is limited to IOUTx(rev) by the reverse battery protection.
Data Sheet
29
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Power Stage
Note: Due to the reverse battery protection a reverse protection diode for the light module may be obsolete. In
case of high ISO-pulse requirements and only minor protecting components like capacitors a reverse
protection diode may be reasonable. The external protection circuit needs to be verified in the application.
11.2
Electrical Characteristics Power Stage
Electrical Characteristics Power Stage
Unless otherwise specified: VS = 5.5 V to 18 V, Tj = -40°C to +150°C, VOUT = 3.6 V, all voltages with respect to ground, positive
current flowing into pin for input pins (I), positive currents flowing out of the I/O and output pins (O) (unless otherwise
specified)
Pos.
Parameter
Symbol
Limit Values
Min.
11.2.1
Output leakage current
Typ.
Unit
Conditions
µA
VEN = 5.5 V
IIN_SET = 0 µA
VOUT = 2.5 V
Tj = 150 °C
1)
Tj = 85 °C
1)
Max.
IOUT(leak)
–
–
–
–
21
9
11.2.2
Output leakage current in
boost over battery setup
-IOUT(leak,B2B)
–
–
150
µA
VEN = 5.5 V
IIN_SET = 0 µA
VOUT = VS = 40 V
11.2.3
Reverse output current
-IOUT(rev)
–
–
3
µA
1)
11.2.4
Output current accuracy
limited temperature range
kLT
1)
2092
1935
11.2.5
VS = -16 V
Output load: LED with
break down voltage
< -0.6 V
2250
2250
Tj = 25...115 °C
VS = 8...18 V
VPS = 2 V
RSET = 6...12 kΩ
RSET = 30 kΩ
2408
2565
1)
Output current accuracy over kALL
temperature
2092
1935
2250
2250
2408
2565
Tj = -40...115 °C
VS = 8...18 V
VPS = 2 V
RSET = 6...12 kΩ
RSET = 30 kΩ
1)
11.2.6
Voltage drop over power
stage during current control
VPS(CC) = VS - VOUT
VPS(CC)
0.75
–
–
V
VS = 13.5 V
RSET = 12 kΩ
IOUT ≥ 90% of (kLT(typ)/RSET)
11.2.7
Required output voltage for
current control
VOUT(CC)
2.3
–
–
V
1)
VS = 13.5 V
RSET = 12 kΩ
IOUT ≥ 90% of (kLT(typ)/RSET)
11.2.8
Maximum output current
IOUT(max)
360
–
–
mA
RSET = 4.7 kΩ
The maximum output
current is limited by the
thermal conditions.
Please refer to Pos. 4.3.1 Pos. 4.3.3
Data Sheet
30
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Power Stage
Electrical Characteristics Power Stage (cont’d)
Unless otherwise specified: VS = 5.5 V to 18 V, Tj = -40°C to +150°C, VOUT = 3.6 V, all voltages with respect to ground, positive
current flowing into pin for input pins (I), positive currents flowing out of the I/O and output pins (O) (unless otherwise
specified)
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
Unit
Conditions
2)
11.2.9
PWMI turn on time
tON(PWMI)
–
–
15
µs
11.2.10
PWMI turn off time
tOFF(PWMI)
–
–
10
µs
11.2.11
ST turn on time
tON(ST)
–
–
15
µs
11.2.12
ST turn off time
tOFF(ST)
–
–
10
µs
11.2.13
IN_SET turn on time
tON(IN_SET)
–
–
15
µs
VS = 13.5 V
IIN_SET = 0 → 100 µA
IOUT = 80% of (kLT(typ)/RSET)
11.2.14
IN_SET turn off time
tOFF(IN_SET)
–
–
10
µs
VS = 13.5 V
IIN_SET = 100 → 0 µA
IOUT = 20% of (kLT(typ)/RSET)
11.2.15
VS turn on time
tON(VS)
–
–
20
µs
1) 4)
VEN = 5.5 V
RSET = 12 kΩ
VS = 0 → 13.5 V
IOUT = 80% of (kLT(typ)/RSET)
11.2.16
Current reduction
temperature threshold
Tj(CRT)
–
140
–
°C
1)
–
A
1)
11.2.17
Output current during
IOUT(CRT)
85% of –
current reduction at high
(kLT(typ)/
temperature
RSET)
1) Not subject to production test, specified by design
VS = 13.5 V
RSET = 12 kΩ
PWMI → L
IOUT = 80% of (kLT(typ)/RSET)
2)
VS = 13.5 V
RSET = 12 kΩ
PWMI→ H
IOUT = 20% of (kLT(typ)/RSET)
3)
VS = 13.5 V
RSET = 12 kΩ
ST → L
IOUT = 80% of (kLT(typ)/RSET)
3)
VS = 13.5 V
RSET = 12 kΩ
ST →H
IOUT = 20% of (kLT(typ)/RSET)
IOUT = 95% of
(kLT(typ)/RSET)
RSET = 12 kΩ
Tj = 150 °C
2) see also Figure 8
3) see also Figure 18
4) see also Figure 6
Data Sheet
31
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Application Information
12
Application Information
Note: The following information is given as a hint for the implementation of the device only and shall not be
regarded as a description or warranty of a certain functionality, condition or quality of the device.
GND
4.7nF**
ISO-Pulse
protection circuit
depending on
requirements
VS
CVS =4.7nF
BRAKE
10kΩ
Cmod =2.2µF
TAIL
EN
Internal
supply
PWMI
Thermal
protection
Output
control
Current
adjustment
Status
OUT
* In case PWM via VS is performed
** For EMI improvement if required
Figure 26
GND
CST =100pF**
470kΩ*
RSET
CD
TLD1125EL
ST
IN_SET
RPWMI
CPWMI
D
to other LITIX™ Basic
Application Diagram
Note: This is a very simplified example of an application circuit. In case of high ISO-pulse requirements a reverse
protection diode may be used for LED protection. The function must be verified in the real application.
12.1
•
Further Application Information
For further information you may contact http://www.infineon.com/
Data Sheet
32
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Package Outlines
13
Package Outlines
0.19 +0.06
0.08 C
0.15 M C A-B D 14x
0.64 ±0.25
1
8
1
7
0.2
M
D 8x
Bottom View
3 ±0.2
A
14
6 ±0.2
D
Exposed
Diepad
B
0.1 C A-B 2x
14
7
8
2.65 ±0.2
0.25 ±0.05 2)
0.1 C D
8˚ MAX.
C
0.65
3.9 ±0.11)
1.7 MAX.
Stand Off
(1.45)
0 ... 0.1
0.35 x 45˚
4.9 ±0.11)
Index Marking
1) Does not include plastic or metal protrusion of 0.15 max. per side
2) Does not include dambar protrusion
Dimensions in mm
PG-SSOP-14-1,-2,-3-PO V02
Figure 27
PG-SSOP-14
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant
with government regulations the device is available as a green product. Green products are RoHS-Compliant
(i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
For further information on alternative packages, please visit our website:
http://www.infineon.com/packages.
Data Sheet
33
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Revision History
14
Revision History
Revision
Date
Changes
1.0
2013-08-08
Inital revision of data sheet
1.1
2015-03-19
Updated parameters KLT and KALL in the chapter Power Stage
1.2
2018-04-26
Updated to latest template
1.2
2018-04-26
Updated application drawing
1.2
2018-04-26
Updated package marking
1.2
2018-04-26
Updated package figure
Data Sheet
34
Rev. 1.2
2018-04-26
LITIX™ Basic
TLD1125EL
Table of Contents
1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3
3.1
3.2
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
4.1
4.2
4.3
General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5
5.1
5.2
5.3
5.3.1
5.3.2
EN Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
EN Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Internal Supply Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
EN Unused . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
EN - Pull Up to VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
EN - Direct Connection to VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6
6.1
6.2
6.3
PWMI Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PWM Dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal PWM Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics Internal Supply / EN / PWMI Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
7.1
7.2
IN_SET Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Output Current Adjustment via RSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Smart Input Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8
8.1
8.2
8.3
ST Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disable Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
D Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
10
10.1
10.2
10.3
Load Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Open Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Short Circuit to GND detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics IN_SET Pin and Load Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23
23
25
26
11
11.1
11.1.1
11.1.2
11.2
Power Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Over Load Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse Battery Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics Power Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29
29
29
29
30
12
12.1
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Further Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
13
Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
14
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
11
11
12
14
20
20
20
20
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Data Sheet
35
Rev. 1.2
2018-04-26
Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
Edition 2018-04-26
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2018 Infineon Technologies AG.
All Rights Reserved.
Do you have a question about any
aspect of this document?
Email: erratum@infineon.com
Document reference
TLD1125EL
IMPORTANT NOTICE
The information given in this document shall in no
event be regarded as a guarantee of conditions or
characteristics ("Beschaffenheitsgarantie").
With respect to any examples, hints or any typical
values stated herein and/or any information regarding
the application of the product, Infineon Technologies
hereby disclaims any and all warranties and liabilities
of any kind, including without limitation warranties of
non-infringement of intellectual property rights of any
third party.
In addition, any information given in this document is
subject to customer's compliance with its obligations
stated in this document and any applicable legal
requirements, norms and standards concerning
customer's products and any use of the product of
Infineon Technologies in customer's applications.
The data contained in this document is exclusively
intended for technically trained staff. It is the
responsibility of customer's technical departments to
evaluate the suitability of the product for the intended
application and the completeness of the product
information given in this document with respect to
such application.
For further information on technology, delivery terms
and conditions and prices, please contact the nearest
Infineon Technologies Office (www.infineon.com).
WARNINGS
Due to technical requirements products may contain
dangerous substances. For information on the types
in question please contact your nearest Infineon
Technologies office.
Except as otherwise explicitly approved by Infineon
Technologies in a written document signed by
authorized representatives of Infineon Technologies,
Infineon Technologies’ products may not be used in
any applications where a failure of the product or any
consequences of the use thereof can reasonably be
expected to result in personal injury.
工商网监
湘ICP备2023018690号
