ST LNBP8L, LNBP9L, LNBP10L, LNBP11L User Manual

LNB supply and control voltage regulator

Features

■ Simplest integrated solution for LNB remote

supply and control

■ 500 mA guaranteed output current

■ Dual input supply for reducing power

dissipation (DFN package)

■ 3-state function to enable/disable and select

the output voltage level through a single pin

■ Fast oscillator startup for DiSEq™ encoding

(LNBP9L/11L versions)

■ External 22 kHz modulation input pin

(LNBP8L/10L versions)

■ Cable length compensation, LLC pin

(LNBP10L, LNBP11L versions)

■ Short-circuit and over-temperature protection

■ LNB overload and short-circuit dynamic

protection (LNBP10L, LNBP11L versions)

■ Available in DFN8 (5 x 6 mm) and IPPAK

packages

Description

Intended for analog and digital satellite receivers, the LNBP is a monolithic linear voltage regulator, assembled in the DFN8 (5 x 6) and IPPAK packages, specifically designed to provide the powering voltages and the interfacing signals to the LNB down-converter. The regulator output can be logic controlled for 13 V or 18 V (typ.) by means of the EN/VSEL 3-state pin for remotely controlling the LNB. When the IC is powered and put in standby (EN/VSEL pin at high impedance), the regulator output is disabled. In order to reduce power dissipation, the LNBP10L/11L versions (on DFN package) feature 2 supply inputs: V V

. These pins must be powered, respectively,

CC2

at 15 V (min.) and 22 V (min.), and an internal switch will automatically select the appropriate supply voltage according to the selected output voltage. The LNBP8L/9L versions (in the IPPAK package) have only one supply input pin, which

CC1

and

LNBP8L, LNBP9L

LNBP10L, LNBP11L

IPPAK

must be supplied at 22 V (min.). Additionally, the LNBP10L/11L versions have the LLC pin to increment the selected output voltage value by 1 V (typ.) to compensate for the excess voltage drop along the coaxial cable (LLC pin HIGH). An analog 22 kHz modulation input pin (EXTM) is available in the LNBP8L and LNBP10L versions. An appropriate DC blocking capacitor must be used to couple the modulating signal source to the EXTM pin. The LNBP10L/11L versions are also equipped with over-current dynamic protection: as soon as an overload is detected the output is shut down for the time T determined by the capacitor connected between the CEXT pin and GND. After the time has elapsed, the output is resumed for a time T (1/12)*T

(typ.). If the overload is still present,

OFF

the protection circuit will cycle again through T and T T

ON+TOFF

until the overload is removed. A typical

ON

value is 1100 ms when a 4.7 µF external capacitor is used on the C dynamic operation can greatly reduce the power dissipation in short-circuit condition, while ensuring excellent power-on startup even with highly capacitive loads on the LNB outputs. The device is packaged in the IPPAK for through-hole mounting and in the DFN8 (5 x 6) for surface mounting. Both package solutions are offered in two versions: with ten pins (LNBP9L/11L) to use with the integrated 22 kHz tone generator, or with the EXTM pin (LNBP8L/10L) to use external 22 kHz sources. All versions have built-in thermal protection to prevent overheating damage.

DFN8 (5 x 6 mm)

which is

OFF,

ON

. This

EXT

=

OFF

August 2010 Doc ID 15153 Rev 2 1/21

www.st.com

21

Contents LNBP8L, LNBP9L, LNBP10L, LNBP11L

Contents

1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5 Typical application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6 Detailed description and application hints . . . . . . . . . . . . . . . . . . . . . . . 9

6.1 Input voltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.2 Single supply for the DFN package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.3 IPPAK mounting and thermal considerations . . . . . . . . . . . . . . . . . . . . . . 11

7 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

9 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2/21 Doc ID 15153 Rev 2

LNBP8L, LNBP9L, LNBP10L, LNBP11L Diagram

1 Diagram

Figure 1. Block diagram

VCC1

VCC2

R

SENSE

EN/VSEL

LLC

CEXT

TEN

TRISTATE ENABLE &

TRISTATE ENABLE & VOUT SELECTION

VOUT SELECTION

DYNAMIC

DYNAMIC CURRENT LIMIT

CURRENT LIMIT

22KHz

22kHz

22KHz

22kHz OSCILLATOR

OSCILLATOR

VOLTAGE

VOLTAGE REFERENCE

REFERENCE

THERMAL

THERMAL PROTECTION

PROTECTION

SENSE

OUTPUT

EXTM

LNBP8L/9L/10L/11L

GND

Doc ID 15153 Rev 2 3/21

Pin configuration LNBP8L, LNBP9L, LNBP10L, LNBP11L

2 Pin configuration

Figure 2. Pin connections (top view for IPPAK, bottom view for DFN8)

IPPAK

Table 1. Pin description

Pin n° (DFN) LNBP10/11L

1-

21

32OUTPUT

4, ePAD 3, ePAD GROUND GROUND

64EN/VSEL

55EXTM/TEN

Pin n°

(IPPAK)

LNBP8/9L

Name Pin function

VCC1

(not available for

IPPAK)

VCC2

pin for

(V

CC

IPPAK)

Supply input 1: 15 V to 25 V supply. For DFN package it is automatically selected when V V supplied at 22 V min.

Supply input 2: 22 V to 25 V supply. For DFN package it is automatically selected when V V supplied at 22 V min.

Output: regulator output. It is 13 V typ when EN/VSEL LOW and 18 V typ when EN/VSEL HIGH.

Enable and output voltage selection 3-state pin: logic control input 3-state pin for the remote controlling of the LNB; if LOW V IC is set in shut down mode (V

Tone enable (LNBP9-11): logic control input to enable internal tone generator. External modulation (LNBP8-10): Needs DC decoupling to the AC source. If not used can be left floating.

and V

CC1

and V

CC1

= 13 V, when HIGH V

OUT

are internally connected together to pin 1 to be

CC2

are internally connected together to the pin 1 to be

CC2

DFN8 (5 x 6 mm)

= 13 V. For IPPAK package

OUT

= 18 V. For IPPAK package

OUT

= 18 V, if left at high impedance the

OUT

= 0 V)

8 NA LLC LLC: logic control input to add 1 V typ.

C

: timing capacitor used by the dynamic overload protection.

7NAC

EXT

Typical application is 4.7 µF for a 1100 ms cycle

4/21 Doc ID 15153 Rev 2

LNBP8L, LNBP9L, LNBP10L, LNBP11L Maximum ratings

3 Maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit

VCC1, VCC2 Input voltages -0.3 to 28 V

VCC1-OUTPUT VCC1 voltage with respect to OUTPUT voltage

VCC2-OUTPUT VCC2 voltage with respect to OUTPUT voltage

EN/VSEL, TEN,

LLC

EXTM External modulation input voltage -0.3 to 1 V

OUTPUT Output voltage -0.3 to 25 V

T

STG

ESD

DFN package

Logic input voltage -0.3 to 7 V

Storage temperature range -50 to 150 °C

ESD rating with human body model (HBM) for all pins except 1, 2, 6 2 kV

ESD rating with human body model (HBM) for pins 1, 2, 6 1.5

(1)

-0.3 to 25 V

ESD

IPPAK package

1. Exposure beyond the VCC1 and VCC2 with respect to OUTPUT absolute-maximum-rated voltages during OUTPUT pin overload or short-circuit to GROUND may cause permanent damage to the device.

ESD rating with human body model (HBM) for all pins except 1, 4 2 kV

ESD rating with human body model (HBM) for pins 1, 4 1.5

Note: Absolute maximum ratings are those values beyond which damage to the device may occur.

These are stress ratings only and functional operation of the device at these conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to network ground terminal unless otherwise stated.

Table 3. Operating ratings

Symbol Parameter Value Unit

T

J

VCC1 Input voltage 15 to 25 V

VCC2 Input voltage 22 to 25 V

Operating junction temperature range 0 to 125 °C

Table 4. Thermal data

Symbol Parameter IPPAK DFN8 Unit

R

Thermal resistance junction-ambient

thJA

Thermal resistance junction-case 8 °C/W

thJC

Doc ID 15153 Rev 2 5/21

(mounted on PCB 2s2p)

35

°C/W

Electrical characteristics LNBP8L, LNBP9L, LNBP10L, LNBP11L

4 Electrical characteristics

Refer to the typical application circuits in Figure 3 and Figure 4, V V

= 23 V

CC2

T

= 0 °C to 85 °C, unless otherwise stated. Typical values are referred to TJ = 25 °C.

J

Table 5. Electrical characteristics

(1)

, EN/VSEL = LOW, TEN = LLC = LOW, EXTM = FLOATING, I

CC1

= 16 V,

OUT

= 50 mA,

Symbol Parameter Test conditions Min. Typ. Max. Unit

I

= 500 mA, TEN=HIGH,

V

ΔV

I

F

A

D

G

V

Z

CC1

CC2

OUT

MAX

TONE

, t

t

r

EXTM

OUT

VCC supply input 1

(1)

EN/VSEL=LOW, LLC=LOW

I

= 500 mA, TEN=HIGH,

OUT

EN/VSEL=LOW, LLC= HIGH

I

= 500 mA, TONE=HIGH,

OUT

VCC supply input 2

(1)

EN/VSEL=HIGH, LLC=LOW

= 500 mA, TONE=HIGH,

I

OUT

EN/VSEL=HIGH, LLC= HIGH

I

= 500 mA, EN/VSEL=LOW 12.5 13.25 14 V

OUT

= 500 mA, EN/VSEL=HIGH 17 18 19 V

I

OUT

Output voltage

Line regulation

Load regulation

(1)

I

= 500 mA, EN/VSEL=LOW,

OUT

LLC=HIGH

I

OUT

V

CC1

(2)

= 500 mA, EN/VSEL=LLC=HIGH

from 15 V to 18 V, EN/VSEL=LOW

or HIGH

V

CC1

= V

CC2

= 22 V, I

from 50 mA to

OUT

500 mA, EN/VSEL=LOW or HIGH

Output current limiting 550 700 850 mA

Tone frequency TEN=High 20 22 24 kHz

Tone amplitude TEN=High 0.4 0.65 0.9 V

Tone duty cycle TEN=High 40 50 60 %

/Δ V

(3)

, freq. from 10 kHz to 40

EXTM

Tone Rise and Fall Time TEN=High

f

External modulation Gain

External modulation input voltage

External modulation impedance

Δ V

OUT

kHz

AC Coupling 400 mV

Freq. from 10 kHz to 40 kHz 400 Ω

15 25

16 25

22 25

23 25

14.25 V

(2)

19 V

540mV

50 150 mV

51015µs

4.5 5.5 6.5

V

PP

V

ILT

V

IHT

I

IHT

Control input logic LOW threshold for 3-state pin

Control input logic HIGH threshold for 3-state pin

3-state control pin input current HIGH

EN/VSEL 0.8 1 1.2 V

EN/VSEL 1.8 2 2.2 V

V

= 5 V, EN/VSEL -400 µA

IHT

6/21 Doc ID 15153 Rev 2

LNBP8L, LNBP9L, LNBP10L, LNBP11L Electrical characteristics

Table 5. Electrical characteristics (continued)

Symbol Parameter Test conditions Min. Typ. Max. Unit

I

ILT

V

I

IH

I

CC

T

OFF

T

ON

I

OBK

T

SHDN

ΔT

SHDN

1. For IPPAK package V 25 V

2. Only DFN package

3. Guaranteed by design

3-state control pin input current LOW

Control input logic LOW TEN, LLC 0.8 V

IL

Control input logic HIGH TEN, LLC 2.5 V

IH

Control pins input current V

Supply current

Dynamic overload protection OFF time

Dynamic overload protection ON time

Output backward current Output forced to 21 V 6 mA

Thermal shutdown threshold

Thermal shutdown hysteresis

CC1

and V

= 0 V, EN/VSEL +180 µA

V

ILT

= 5 V, TEN, LLC 20 µA

IH

Output disabled EN/VSEL=High impedance (floating)

Output enabled EN/VSEL=HIGH, TEN=HIGH, I

Output shorted, C

OUT

= 500 mA

= 4.7 µF

EXT

= 4.7 µF

EXT

(2)

1.7 2.4 mA

3.7 6.3 mA

1000 ms

T

OFF

/12

165 °C

25 °C

are internally connected to the pin 1 (VCC) to be supplied in the range from 22 V up to

CC2

ms

Doc ID 15153 Rev 2 7/21