TLS835B2EL V [INFINEON]

With an input voltage range of 3 V to 40 V and ver;


型号：	TLS835B2EL V
厂家：	Infineon
描述：	With an input voltage range of 3 V to 40 V and ver
文件：	总25页 (文件大小：822K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Features

•

Wide input voltage range from 3.0 V to 40 V

Adjustable output voltage between 1.5 V and 6 V

Output voltage precision ≤ ±2%

Output current capability up to 350 mA

Ultra low current consumption, typical 20 µA

Very low dropout voltage, typical 100 mV, at output currents below 100 mA

Stable with ceramic output capacitor of 1 µF

Enable

Overtemperature shutdown

Output current limitation

Wide temperature range

Green Product (RoHS compliant)

Potential applications

•

Automotive or other supply systems that are connected to the battery permanently

•

Automotive supply systems that need to operate in cranking condition

Product validation

Qualified for Automotive Applications. Product Validation according to AEC-Q100/101

Description

The OPTIREG™ Linear TLS835B2ELV is a linear voltage regulator with high performance, very low dropout

linear voltage and very low quiescent current.

With an input voltage range of 3 V to 40 V and very low quiescent current of only 20 µA, this regulator is

perfectly suitable for automotive or other supply systems permanently connected to the battery.

The new loop concept combines fast regulation and very high stability while requiring only one small ceramic

capacitor of 1 µF at the output. At output currents below 100 mA the device has a very low dropout voltage of

only 100 mV (for an output voltage of 5 V) and 120 mV (for an output voltage of 3.3 V). The operating range

starts at an input voltage of only 3 V (extended operating range). This makes the TLS835B2ELV suitable for

automotive systems that need to operate during cranking condition.

The device can be switched on and off by the enable feature.

Data Sheet

Rev. 1.1

2018-09-17

www.infineon.com/OPTIREG-Linear

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

The output voltage of the TLS835B2ELV can be adjusted and set between 1.5 V and 6 V by connecting an

external voltage divider.

Internal protection features such as output current limitation and overtemperature shutdown, protect the

device from immediate damage caused by failures such as output shorted to GND, overcurrent or

overtemperature conditions.

External components

An input capacitor C_Iis recommended to compensate for line influences. The output capacitor C_Qis necessary

for the stability of the regulating circuit. The TLS835B2ELV is designed to be stable with low ESR ceramic

capacitors.

Type

Package

Marking

TLS835B2ELV

PG-SSOP-14

835B2V

Data Sheet

Rev.1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Table of contents

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Potential applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Product validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1

2.2

Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin assignment TLS835B2ELV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin definitions and functions TLS835B2ELV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

General product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1

3.2

3.3

Block description and electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Voltage regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Typical performance characteristics voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Typical performance characteristics current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Typical performance characteristics enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1

4.2

4.3

4.4

4.5

4.6

5.1

5.2

5.2.1

5.2.2

5.2.3

5.3

5.4

5.5

Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Selection of external components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Input pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Output pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Resistor divider R₁, R₂. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Thermal considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Further application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block diagram

Current

Limitation

ADJ

Enable

Bandgap

Reference

Temperature

Shutdown

GND

Figure 1

Block diagram TLS835B2ELV

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Pin configuration

2.1

Pin assignment TLS835B2ELV

n.c.

ADJ

n.c.

GND

Figure 2

Pin configuration TLS835B2ELV

2.2

Pin definitions and functions TLS835B2ELV

Symbol

Function

Input

It is recommended to place a small ceramic capacitor to GND, close to the pins,

to compensate for line influences

n. c.

Not connected

Leave open or connect to GND

Not connected

Leave open or connect to GND

Enable (integrated pull-down resistor)

Enable the IC with high level input signal

Disable the IC with low level input signal

n. c.

Not connected

Leave open or connect to GND

Not connected

Leave open or connect to GND

GND

n. c.

Ground

Not connected

Leave open or connect to GND

n. c.

Not connected

Leave open or connect to GND

Not connected

Leave open or connect to GND

Not connected

Leave open or connect to GND

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Pin configuration

Symbol

Function

ADJ

Output adjustment

Connect an external voltage divider to set the output voltage

n. c.

Not connected

Leave open or connect to GND

Output voltage

Connect output capacitor C_Qto GND close to the pin, respecting the values

specified for its capacitance and ESR in “Functional range” on Page 8

Pad

–

Exposed pad

Connect to heatsink area;

Connect to GND

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

General product characteristics

3.1

Absolute maximum ratings

Table 1

Absolute maximum ratings¹⁾

T_j= -40°C to 150°C; all voltages with respect to ground (unless otherwise specified)

Parameter

Symbol

Values

Unit Note or

Test Condition

Number

Min. Typ. Max.

Input I, enable EN

Voltage

V_I, V_EN

V_Q

-0.3

–

P_4.1.1

P_4.1.2

P_4.1.3

Output Q

Voltage

–

Adjust ADJ

voltage

V_ADJ

Temperatures

Junction temperature

Storage temperature

ESD absorption

ESD susceptibility to GND

T_j

-40

-55

–

150

°C

–

P_4.1.5

P_4.1.6

T_stg

V_ESD

-2

–

²⁾HBM

³⁾CDM at all pins P_4.1.8

P_4.1.7

-750

750

1) Not subject to production test, specified by design.

2) ESD susceptibility, HBM according to ANSI/ESDA/JEDEC JS001 (1.5 kΩ, 100 pF)

3) ESD susceptibility, Charged Device Model “CDM” according JEDEC JESD22-C101

Notes

1. Exceeding the absolute max ratings may cause permanent damage to the device and affects the device’s

reliability.

2. Integrated protection functions are designed to prevent IC destruction under fault conditions described in the

data sheet. Fault conditions are considered as operation outside the normal operating range. Protection

functions are not designed for continuous repetitive operation.

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

General product characteristics

3.2

Functional range

Table 2

Functional range

T_j= -40°C to 150°C; all voltages with respect to ground (unless otherwise specified)

Parameter

Symbol

Values

Unit Note or

Test Condition

Number

Min.

Typ.

Max.

Input voltage range

V_I

V_Q,nom+ V_dr

–

P_4.2.1

P_4.2.2

P_4.2.3

P_4.2.4

Extended input voltage range V_I,ext

3.0

Enable voltage range

V_EN

C_Q

–

3)4)

Capacitance of output

capacitor for stability

–

µF

–

Equivalent series resistance of ESR(C_Q)

output capacitor

–

Ω

–

P_4.2.5

P_4.2.6

Junction temperature

T_j

-40

150

°C

–

1) Output current is limited internally and depends on the input voltage, see electrical characteristics for more details.

2) If V_I,ext,min≤ V_I≤ V_Q,nom+ V_dr, then V_Q= V_I- V_dr. If V_I< V_I,ext,min, then V_Qcan drop to 0 V.

3) Not subject to production test, specified by design.

4) The minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30%

Note:

Within the functional or operating range, the IC operates as described in the circuit description. The

electrical characteristics are specified within the conditions given in the electrical characteristics

table.

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

General product characteristics

3.3

Thermal resistance

Note:

This thermal data was generated in accordance with JEDEC JESD51 standards. For more

information, go to www.jedec.org.

Table 3

Thermal resistance of TLS835B2ELV in PG-SSOP-14 package

Parameter

Symbol

Values

Min. Typ.

Unit Note or

Test Condition

Number

Max.

Junction to case

R_thJC

R_thJA

–

K/W

–

P_4.3.1

P_4.3.2

P_4.3.3

Junction to ambient

¹⁾²⁾2s2p board

125

¹⁾³⁾1s0p board,

footprint only

Junction to ambient

R_thJA

–

K/W

¹⁾³⁾1s0p board,

300 mm²heatsink

area on PCB

¹⁾³⁾1s0p board,

600 mm²heatsink

area on PCB

P_4.3.4

P_4.3.5

R_thJA

1) Not subject to production test, specified by design

2) Specified R_thJAvalue is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board. The product

(chip + package) was simulated on a 76.2 × 114.3 × 1.5 mm³ board with 2 inner copper layers (2 × 70 µm Cu, 2 × 35 µm

Cu). Where applicable a thermal via array under the exposed pad contacted the first inner copper layer.

3) Specified R_thJAvalue is according to JEDEC JESD 51-3 at natural convection on FR4 1s0p board. The product

(chip + package) was simulated on a 76.2 × 114.3 × 1.5 mm³board with 1 copper layer (1 × 70 µm Cu).

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block description and electrical characteristics

4.1

Voltage regulation

The output voltage V_Qis divided by a resistor network. This fractional voltage is compared to an internal

voltage reference and the pass transistor is driven accordingly.

The control loop stability depends on the following factors:

•

output capacitor C_Q

load current

chip temperature

internal circuit design

Output capacitor

To ensure stable operation, the capacitance of the output capacitor and its equivalent series resistor (ESR)

requirements as specified in “Functional range” on Page 8 must be maintained. The output capacitor must

be sized according to the requirements of the application to be able to buffer load steps.

Input capacitors, reverse polarity protection diode

An input capacitor C_Iis recommended to compensate for line influences.

In order to block influences such as pulses and high frequency distortion at the input, an additional reverse

polarity protection diode and a combination of several capacitors for filtering should be used. Connect the

capacitors close to the component’s terminals.

Smooth ramp-up

In order to prevent overshoots during startup, a smooth ramp-up function is implemented. This ensures

almost no output voltage overshoots during startup, mostly independent from load and output capacitance.

Output current limitation

If the load current exceeds the specified limit, due to a short-circuit for example, then the output current is

limited and the output voltage decreases.

Overtemperature shutdown

The overtemperature shutdown circuit prevents the IC from immediate destruction in case of a fault condition

(for example a permanent short-circuit at the output) by switching off the power stage. After the IC has cooled

down, the regulator restarts. This leads to an oscillatory behavior of the output voltage until the fault is

removed. However, any junction temperature above 150°C is outside the maximum ratings and therefore

significantly reduces the lifetime of the IC.

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block description and electrical characteristics

Regulated

Output Voltage

Supply

I_Q

I_I

Current

Limitation

R₁

C_Q

ADJ

Enable

C_I1

C_I2

R_LOAD

V_I

V_Q

Bandgap

Reference

Temperature

Shutdown

ESR

R₂

GND

Figure 3

Voltage regulation

V_I

V_dr

V_Q,nom

V_Q

V_I,ext,min

Figure 4

Output voltage vs. input voltage

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block description and electrical characteristics

Table 4

Electrical characteristics voltage regulator

T_j= -40°C to 150°C, V_I= 13.5 V, all voltages with respect to ground (unless otherwise specified).

Typical values are given at T_j= 25 °C, V_I= 13.5 V.

Parameter

Symbol

Values

Unit Note or Test Condition

Number

Min. Typ. Max.

Output voltage accuracy¹⁾ΔV_Q

-2

–

0.05 mA ≤ I_Q≤ 350 mA

3 V ≤ V_I≤ 28 V,

V_I≥ V_Q,nom+ V_dr,

R₂≤ 250 kΩ

P_5.1.33

-2

–

0.05 mA ≤ I_Q≤ 175 mA

3 V ≤ V_I≤ 40 V,

P_5.1.34

V_I≥ V_Q,nom+ V_dr,

R₂≤ 250 kΩ

Reference voltage

V_ref

1.47

1.5

–

1.53

–

P_5.1.36

P_5.1.37

Output voltage adjustable V_Q,Range1.5

range

Dropout voltage

V_dr= V_I- V_Q

V_dr

–

100

250

200

500

–

²⁾I_Q= 100 mA, V_Q,nom= 6 V P_5.1.43

²⁾I_Q= 250 mA, V_Q,nom= 6 V P_5.1.41

Dropout voltage

V_dr= V_I- V_Q

V_dr

Power supply ripple

rejection³⁾

PSRR

V_Q= 1.5 V,

_ripple= 100 Hz,

_ripple= 0.5 V_p-p

I_Q= 10 mA

P_5.1.44

Output current limitation

I_Q,max

351

500

-5

780

–

0 V < V_Q< V_Q,nom- 0.1 V

P_5.1.47

P_5.1.52

Load regulation

steady-state

ΔV_Q,load-15

I_Q= 0.05 mA to 350 mA

V_I= 7 V

Line regulation

steady-state

ΔV_Q,line

–

200

–

°C

V_I= 8 V to 32 V

I_Q= 5 mA

³⁾T_jincreasing

P_5.1.53

P_5.1.55

P_5.1.56

Overtemperatureshutdown T_j,sd

threshold

151

–

175

Overtemperatureshutdown T_j,sdh

³⁾T_jdecreasing

threshold hysteresis

1) Referring to the device tolerance only, the tolerance of the resistor divider can cause additional deviation. Parameter

is tested with the ADJ pin directly connected to the output pin Q.

2) Measured when the output voltage V_Qhas dropped by 100 mV while input voltage was gradually decreased.

3) Not subject to production test, specified by design

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block description and electrical characteristics

4.2

Typical performance characteristics voltage regulator

Output voltage V_Qversus

junction temperature T_j

Output voltage V_Qversus

junction temperature T_j

1.6

1.58

1.56

1.54

1.52

1.5

6.2

6.15

6.1

6.05

1.48

1.46

1.44

1.42

1.4

V_I= 13.5 V

_Q= 100 mA

_Q,nom= 1.5 V

V_I= 13.5 V

_Q= 100 mA

_Q,nom= 6 V

5.95

5.9

−40

100

150

−40

100

150

T_j[°C]

Output voltage V_Qversus

input voltage V_I

Output voltage V_Qversus

input voltage V_I

T_j= −40 °C

T_j= 25 °C

2.5

T_j= 150 °C

1.5

I_Q= 100 mA

V_Q,nom= 1.5 V

I_Q= 100 mA

_Q,nom= 6 V

0.5

V_I[V]

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block description and electrical characteristics

Dropout voltage V_drversus

junction temperature T_j

Dropout voltage V_drversus

output current I_Q

600

I_Q= 100 mA

T_j= −40 °C

I_Q= 250 mA

T_j= 25 °C

500

T_j= 150 °C

V_Q,nom= 6 V

400

300

200

100

400

300

200

100

150

100

150

200

250

T_j[°C]

I_Q[mA]

Power supply ripple rejection PSRR versus

ripple frequency f

Maximum output current I_Qversus

input voltage V_I

100

700

600

500

400

300

200

I_Q= 10 mA

C_Q= 1 μF

V_I= 13.5 V

_ripple= 0.5 V_pp

V_Q,nom= 1.5 V

T_j= −40 °C

100

T_j= 25 °C

V_Q,forced= 0 V

T_j= 150 °C

10⁻²10⁻¹10⁰

10¹

10²10³

f [Hz]

10⁴

10⁵

10⁶

V_I[V]

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block description and electrical characteristics

Load regulation ΔV_Q,loadversus

output current change I_Q

Line regulation ΔV_Q,lineversus

input voltage V_I

T_j= −40 °C

I_Q= 5 mA

V_I= 7 V

T_j= 25 °C

C_Q= 1 μF

T_j= 150 °C

−2

−4

−6

−8

−2

−4

−6

−8

−10

100

150

200

250

300

350

I_Q[mA]

V_I[V]

Equivalent series resistance of output capacitor

ESR(C_Q) versus

output current I_Q

10³

Unstable Region

10²

10¹

Stable Region

10⁰

C_Q= 1 μF

−40°C ≤ T ≤ 150°C

10⁻¹

100

150

200

250

300

350

I_Q[mA]

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block description and electrical characteristics

4.3

Current consumption

Table 5

Electrical characteristics current consumption

T_j= -40°C to 150°C, V_I= 13.5 V (unless otherwise specified)

Typical values are given at T_j= 25°C

Parameter

Symbol

Values

Unit Note or Test Condition Number

Min. Typ. Max.

Current consumption

I_q= I_I

I_q,off

I_q

–

µA

V_EN= 0 V; T_j< 105°C

V_EN= 0.4 V; T_j< 125°C

P_5.3.1

P_5.3.3

P_5.3.4

P_5.3.5

P_5.3.6

Current consumption

I_q= I_I

–

Current consumption

I_q= I_I- I_Q

I_Q= 0.05 mAT_j

T_j= 25°C

Current consumption

I_q= I_I- I_Q

I_q

I_Q= 0.05 mA

T_j< 125°C

¹⁾I_Q= 350 mA

T_j< 125°C

Current consumption

I_q= I_I- I_Q

I_q

1) Not subject to production test, specified by design

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block description and electrical characteristics

4.4

Typical performance characteristics current consumption

Current consumption I_qversus

output current I_Q

Current consumption I_qversus

input voltage V_I

T_j= −40 °C

T_j= 25 °C

T_j= 150 °C

T_j= −40 °C

T_j= 25 °C

T_j= 125 °C

V_I= 13.5 V

100

150

I_Q[mA]

200

250

300

350

V_I[V]

Current consumption I_qversus

junction temperature T_j

V_I= 13.5 V

I_Q= 50 μA

−40

100

150

T_j[°C]

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block description and electrical characteristics

4.5

Enable

The TLS835B2ELV can be switched on and off by the enable feature. Applying a “high” level as specified below

with V_EN≥ 2 V to the EN pin enables the device. Applying a “low” level as specified below withV_EN≤ 0.8 V shuts

down the device. The enable feature has a built-in hysteresis to avoid toggling between the ON/OFF state,

when a signal with slow slope is applied to the EN pin.

Table 6

Electrical characteristics enable

T_j= -40°C to 150°C, V_I= 13.5 V, all voltages with respect to ground (unless otherwise specified)

Typical values are given at T_j= 25°C

Parameter

Symbol

Values

Unit Note or

Test Condition

Number

Min. Typ. Max.

Enable “high” input voltage

Enable “low” input voltage

Enable threshold hysteresis

Enable “high” input current

V_EN,H

V_EN,L

V_EN,Hy

I_EN,H

R_EN

–

P_5.5.1

P_5.5.2

P_5.5.3

P_5.5.4

P_5.5.5

P_5.5.6

–

0.8

–

µA

MΩ

–

V_EN= 5 V

V_EN≤ 18 V

–

Enable internal pull-down

resistor

2.8

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Block description and electrical characteristics

4.6

Typical performance characteristics enable

Output voltage V_Qversus

time t (EN switched on)

Output voltage V_Qversus

time t (EN switched on)

V_Qfor T =−40 °C

V_Qfor T = 25 °C

V_Qfor T = 150 °C

V_EN

V_I= 13.5 V

_Q= 100 mA

_Q,nom= 1.5 V

V_I= 13.5 V

_Q= 100 mA

_Q,nom= 6 V

0.5

1.5

0.5

1.5

t [ms]

Enable input current I_ENversus

enable input voltage V_EN

T_j=−40 °C

T_j= 25 °C

T_j= 150 °C

V_EN[V]

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Application information

5.1

Application diagram

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.

Regulated

Output Voltage

Supply

I_Q

I_I

D_I1

Current

Limitation

R₁

C_Q

ADJ

1 μF

Enable

D_I2

C_I1

C_I2

R_LOAD

V_I

V_Q

Bandgap

Reference

<45V

10 μF 100 nF

R₂

Temperature

Shutdown

ESR

GND

e.g. Ignition

Figure 5

Application diagram

Note:

This is a very simplified example of an application circuit. The function must be verified in the real

application.

5.2

Selection of external components

5.2.1

Input pin

Figure 5 shows an example of the input circuitry for a linear voltage regulator. A ceramic capacitor at the

input, in the range of 100 nF to 470 nF, is recommended to filter out the high frequency disturbances imposed

by the line, for example ISO pulses 3a/b. This capacitor must be placed very close to the input pin of the linear

voltage regulator on the PCB.

An aluminum electrolytic capacitor in the range of 10 µF to 470 µF is recommended as an input buffer to

smooth out high energy pulses, such as ISO pulses 2a. This capacitor must be placed close to the input pin of

the linear voltage regulator.

An overvoltage suppressor diode can be used to further suppress any high voltage beyond the maximum

rating of the linear voltage regulator and to protect the device from damage due to overvoltage.

The external components at the input pin are optional, but they are recommended to deal with possible

external disturbances.

5.2.2

Output pin

An output capacitor is mandatory for the stability of linear voltage regulators. Furthermore it serves as an

energy buffer during load jumps, to compensate and maintain a constant output voltage potential. It must be

dimensioned according to the specific requirements of the application. The requirements for the output

capacitor are given in “Functional range” on Page 8.

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Application information

TLS835B2ELV is designed to also be stable with low ESR capacitors. According to the automotive

requirements, ceramic capacitors with X5R or X7R dielectrics are recommended.

The output capacitor should be placed as close as possible to the voltage regulator’s output pin and GND pin

and on the same side of the PCB as the regulator itself.

In case of input voltage or load current transients, the capacitance should be dimensioned accordingly. The

configuration has to be verified in the real application to ensure that the output stability requirements are

fulfilled.

5.2.3

Resistor divider R₁, R₂

The resistor divider can be calculated according to Equation (5.1):

R₁

R₂

V_Q

− 1

V_ADJ

(5.1)

with

•

V_Q: output voltage

_ADJ: V_ref, reference voltage

5.3

Thermal considerations

From the known input voltage, the output voltage and the load profile of the application, the total power

dissipation can be calculated as follows:

P_D= (V_I

−

V_Q)I_Q+ V_II_q

(5.2)

with

•

P_D: continuous power dissipation

V_I: input voltage

V_Q: output voltage

I_Q: output current

I_q: quiescent current

The maximum acceptable thermal resistance R_thJAis given by:

T_j,max− T_a

R_thJA

P_D

(5.3)

with

•

T_j,max: maximum allowed junction temperature

T_a: ambient temperature

Based on the above calculation the proper PCB type and the necessary heat sink area can be determined by

referencing the specification for “Thermal resistance” on Page 9.

5.4

Reverse polarity protection

TLS835B2ELV is not protected against reverse polarity faults and must be protected by external components

against negative supply voltage. An external reverse polarity diode is necessary. The absolute maximum

ratings of the device as specified in “Absolute maximum ratings” on Page 7 must be maintained.

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Application information

5.5

Further application information

For further information you may contact https://www.infineon.com/

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Package information

0.35 x 45˚

0.1 C D

±0.1

3.9

+0.06

0.1

0.08

0.64_±0.25

0.2

0.65

±0.05

±0.2

0.25

D 8x

0.15

C A-B D 14x

Bottom View

±0.2

Exposed

Diepad

0.1 C A-B 2x

±0.1

4.9

Index Marking

1) Does not include plastic or metal protrusion of 0.15 max. per side

2) Does not include dambar protrusion

Figure 6

PG-SSOP-14¹⁾

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).

Further information on packages

https://www.infineon.com/packages

1) Dimensions in mm

Data Sheet

Rev. 1.1

2018-09-17

OPTIREG™ Linear TLS835B2ELV

Low Dropout Linear Voltage Regulator

Revision history

Revision Date

Changes

2018-09-17 Editorial changes

Updated T to T_jin graph of “Equivalent series resistance of output capacitor

1.1

ESR(C_Q) versus output current I_Q”

Added footnote to overtemperature shutdown specification

Added V_Qand removed V_Iin the test condition of the dropout voltage in electrical

characteristics

1.0

2018-03-02 Initial Version

Data Sheet

Rev. 1.1

2018-09-17

Trademarks

All referenced product or service names and trademarks are the property of their respective owners.

IMPORTANT NOTICE

The information given in this document shall in no For further information on technology, delivery terms

Edition 2018-09-17

Published by

Infineon Technologies AG

81726 Munich, Germany

event be regarded as a guarantee of conditions or and conditions and prices, please contact the nearest

characteristics ("Beschaffenheitsgarantie").

Infineon Technologies Office (www.infineon.com).

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.

WARNINGS

Due to technical requirements products may contain

dangerous substances. For information on the types

in question please contact your nearest Infineon

Technologies office.

Do you have a question about any

aspect of this document?

Email: erratum@infineon.com

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.

Document reference

Z8F61183983

TLS835B2EL V [INFINEON]

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