LNBP8L STMicroelectronics, LNBP8L Datasheet

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LNBP8L

Manufacturer Part Number
LNBP8L
Description
LNB SUPPLY AND CONTROL VOLTAGE REGULATOR
Manufacturer
STMicroelectronics
Datasheet

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LNBP8LIT
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Features
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
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
August 2010
CC2
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
. These pins must be powered, respectively,
CC1
LNB supply and control voltage regulator
Doc ID 15153 Rev 2
and
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
the protection circuit will cycle again through T
and T
T
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.
ON
+T
ON
OFF
LNBP10L, LNBP11L
OFF
until the overload is removed. A typical
IPPAK
value is 1100 ms when a 4.7 µF
(typ.). If the overload is still present,
LNBP8L, LNBP9L
DFN8 (5 x 6 mm)
OFF,
EXT
which is
. This
www.st.com
ON
OFF
1/21
=
21

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LNBP8L Summary of contents

Page 1

... CC1 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. Doc ID 15153 Rev 2 ...

Page 2

... 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 LNBP8L, LNBP9L, LNBP10L, LNBP11L Doc ID 15153 Rev 2 ...

Page 3

... LNBP8L, LNBP9L, LNBP10L, LNBP11L 1 Diagram Figure 1. Block diagram VCC1 VCC1 VCC1 VCC1 VCC2 VCC2 VCC2 VCC2 TRISTATE ENABLE & TRISTATE ENABLE & TRISTATE ENABLE & TRISTATE ENABLE & EN/VSEL EN/VSEL EN/VSEL EN/VSEL VOUT SELECTION VOUT SELECTION VOUT SELECTION VOUT SELECTION LLC ...

Page 4

... C : timing capacitor used by the dynamic overload protection. EXT C EXT Typical application is 4.7 µF for a 1100 ms cycle Doc ID 15153 Rev 2 LNBP8L, LNBP9L, LNBP10L, LNBP11L DFN8 ( mm) Pin function = 13 V. For IPPAK package OUT = 18 V. For IPPAK package OUT = left at high impedance the ...

Page 5

... LNBP8L, LNBP9L, LNBP10L, LNBP11L 3 Maximum ratings Table 2. Absolute maximum ratings Symbol VCC1, VCC2 Input voltages VCC1-OUTPUT VCC1 voltage with respect to OUTPUT voltage VCC2-OUTPUT VCC2 voltage with respect to OUTPUT voltage EN/VSEL, TEN, Logic input voltage LLC EXTM External modulation input voltage OUTPUT ...

Page 6

... TEN=High (3) TEN=High Δ V /Δ freq. from 10 kHz to 40 OUT EXTM kHz AC Coupling Freq. from 10 kHz to 40 kHz EN/VSEL EN/VSEL EN/VSEL IHT Doc ID 15153 Rev 2 LNBP8L, LNBP9L, LNBP10L, LNBP11L and Figure CC1 OUT = 25 °C. J Min. Typ. Max 12.5 13 ...

Page 7

... LNBP8L, LNBP9L, LNBP10L, LNBP11L Table 5. Electrical characteristics (continued) Symbol Parameter 3-state control pin input I ILT current LOW V Control input logic LOW IL V Control input logic HIGH IH I Control pins input current IH I Supply current CC Dynamic overload T OFF protection OFF time Dynamic overload ...

Page 8

... EN/VSEL EN/VSEL (Tristate ) EN/VSEL (Tristate ) (Tristate (Tristate ) ) EXTM or TEN EXTM or TEN EXTM or TEN EXTM or TEN GND GND GND GND Doc ID 15153 Rev 2 LNBP8L, LNBP9L, LNBP10L, LNBP11L LNB OUTPUT LNB OUTPUT LNB OUTPUT LNB OUTPUT 1N5818 1N5818 1N5818 ...

Page 9

... LNBP8L, LNBP9L, LNBP10L, LNBP11L 6 Detailed description and application hints The LNBPxx is made up of several functional blocks (see below: 1. The oscillator is activated by setting the ENT pin (enable tone and is factory- trimmed at 22 kHz ± 2 kHz, eliminating the need to use external trimming. The rising and falling edges are maintained in the µ ...

Page 10

... V EXTM VCC LNBP8/9L EN/VSEL (Tristate) EXTM GND , but only a voltage drop, which can be minimized by OUT Figure 4 and Doc ID 15153 Rev 2 LNBP8L, LNBP9L, LNBP10L, LNBP11L Figure 24 and Figure 25). When This keeps the OFF ON OUT LNB OUTPUT OUTPUT ...

Page 11

... LNBP8L, LNBP9L, LNBP10L, LNBP11L V line (see Figure CC1 voltage on the V CC1 For example, with I Equation 2 Where V is the forward voltage of the input diode D1 (see f Power dissipated in this resistor is: Equation recommended to bypass the V 6.3 IPPAK mounting and thermal considerations First, it should be noted that the tab is directly connected to the GND pin, so care must be taken when the device is connected to a heat-sink ...

Page 12

... The junction-to-ambient thermal resistance for the IPPAK can be calculated as follows: Equation TH-JA TH-JC where the junction-to-case thermal resistance of the IPPAK (see TH-JC data ), R is the case-to-heat sink thermal resistance and the R TH-CH air thermal resistance. 12/ TH-CH TH-HA Doc ID 15153 Rev 2 LNBP8L, LNBP9L, LNBP10L, LNBP11L Table 4: Thermal is the heat sink-to- TH-HA ...

Page 13

... LNBP8L, LNBP9L, LNBP10L, LNBP11L 7 Typical performance characteristics Refer to the typical application circuit °C. J Figure 9. Output voltage vs. temperature 13.8 13.8 CC1 CC1 13.6 13.6 CC2 CC2 OUT OUT 13.4 13 OUT OUT 13.2 13 12.8 12.8 12.6 12.6 12.4 12.4 EN/VSEL=L EN/VSEL=L 12 ...

Page 14

... H = Logic High = Logic Low = Logic Low = Doc ID 15153 Rev 2 LNBP8L, LNBP9L, LNBP10L, LNBP11L temperature = Logic High = Logic High = Logic Low = Logic Low = ...

Page 15

... LNBP8L, LNBP9L, LNBP10L, LNBP11L Figure 21. Tone disable Figure 23. External modulation gain vs. frequency CC1 CC1 6.5 6 CC2 CC2 OUT OUT OUT OUT 5.5 5 4.5 4.5 EN/VSEL=L EN/VSEL TEN=L, LLC=L TEN=L, LLC=L 3 ...

Page 16

... In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: ® ECOPACK trademark. Figure 26. IPPAK package dimensions 16/21 LNBP8L, LNBP9L, LNBP10L, LNBP11L Doc ID 15153 Rev 2 ® www.st.com . 0075222 ...

Page 17

... LNBP8L, LNBP9L, LNBP10L, LNBP11L Table 6. IPPAK mechanical data Dim Note: 1 Controlling dimensions: millimeter. 2 Burrs larger than 0.25 mm are not allowed on the upper surface of the dissipater (FRONT) on the lower surface (REAR) the maximum allowed is: 0.05 mm. ...

Page 18

... L 0.70 18/21 DFN8 (5x6 mm) mechanical data mm. Typ. Max. 0.90 1.00 0.02 0.05 0.20 0.40 0.47 5.00 4.2 4.25 6.00 3.6 3.65 1.27 1.99 2.20 0.40 0.219 0.90 Doc ID 15153 Rev 2 LNBP8L, LNBP9L, LNBP10L, LNBP11L inch. Min. Typ. 0.032 0.035 0.001 0.008 0.014 0.016 0.197 0.163 0.165 0.236 0.140 0.142 0.049 0.078 0.086 0.015 0.0086 0.028 7286463/C Max. 0.039 0.002 0.018 0.167 ...

Page 19

... LNBP8L, LNBP9L, LNBP10L, LNBP11L 9 Ordering information Table 7. Order codes Part numbers LNBP8L LNBP9L LNBP10L LNBP11L Order codes DFN8 ( mm) LNBP8LIT LNBP9LIT LNBP10LPUR LNBP11LPUR Doc ID 15153 Rev 2 Ordering information Packing IPPAK Tape and reel Tape and reel Tape and reel Tape and reel ...

Page 20

... Revision history 10 Revision history Table 8. Document revision history Date Revision 11-Nov-2008 1 25-Aug-2010 2 20/21 Initial release. Document status promoted from preliminary data to datasheet. Doc ID 15153 Rev 2 LNBP8L, LNBP9L, LNBP10L, LNBP11L Changes ...

Page 21

... LNBP8L, LNBP9L, LNBP10L, LNBP11L Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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