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LNBH26LS データシート(PDF) 26 Page - STMicroelectronics

部品番号 LNBH26LS
部品情報  Dual LNBS supply and control IC with step-up and IC interface
PDF  33 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH26LS データシート(HTML) 26 Page - STMicroelectronics

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Electrical characteristics
LNBH26LS
26/33
DocID025504 Rev 1
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
FSW
DC-DC converter
switching
frequency
440
kHz
UVLO
Undervoltage
lockout thresholds
UVLO threshold rising
4.8
V
UVLO threshold falling
4.7
V
VLP
Low power
diagnostic (LPD)
thresholds
VLP threshold rising
7.2
V
VLP threshold falling
6.7
V
VIL
DSQIN, pin logic
low
0.8
V
VIH
DSQIN, pin logic
high
2
V
IIH
DSQIN, pin input
current
VIH = 5 V
15
µA
IOBK
Output backward
current
All VSELx = 0, VOBK = 30 V
-3
-6
mA
ISINK
Output low-side
sink current
VOUT forced at VOUT_nom+0.1 V
70
mA
ISINK_TIME-
OUT
Low-side sink
current time-out
VOUT forced at VOUT_nom+0.1 V
10
ms
IREV
Max. reverse
current
VOUT forced at VOUT_nom+0.1 V,
after ISINK_TIME-OUT is elapsed.
2
mA
TSHDN
Thermal shutdown
threshold
150
°C
DTSHDN
Thermal shutdown
hysteresis
15
°C
Notes:
(1)In applications where (V
CC - VOUT) > 1.3 V, the increased power dissipation, inside the integrated
LDO, must be taken into account in the application thermal management design.
(2)Guaranteed by design.
8.1
Output voltage selection
Each LNBH26LS channel is provided with 8 output voltage levels, (4 levels for 13 V range
when VSEL4-A/B=0 and 4 levels for 18 V range when VSEL4-A/B=1) which can be
selected through the register data1. The following table shows the output voltage values
corresponding to VSELx bit combinations both for channel A and B. If all VSELx are at “0”
the device is set in standby mode and the VOUT-A/B are disabled.
Table 13: Output voltage selection table (data1 register, write mode)
VSEL4-
A/B
VSEL3-
A/B
VSEL2-
A/B
VSEL1-
A/B
VOUTmin.
VOUT-A/B
pin
voltage
VOUTmax.
Function
0
0
0
0
0
VOUT -A/B
disabled. The
LNBH26LS set in
standby mode



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