LNBH25LPQR Datasheet, PDF (20/28 Pages) STMicroelectronics – LNB supply and control IC with step-up and I2C interface

Electrical characteristics
8
Electrical characteristics
LNBH25L
Refer to Section 5, T_J from 0 to 85 °C, all data 1..4 register bits set to 0 unless VSEL1 = 1,
RSEL = 16.2 kΩ, DSQIN = LOW, V_IN = 12 V, I_OUT = 50 mA, unless otherwise stated. Typical
values are referred to T_J = 25 °C. V_OUT = V_OUT pin voltage. See software description section
for I²C access to the system register (Section 6 and Section 7).
.
Table 12. Electrical characteristics
Symbol
V_IN
I_IN
V_OUT
V_OUT
V_OUT
I_MAX
Parameter
Test conditions
Supply voltage ⁽¹⁾
Supply current
I_OUT =0 mA
22 kHz tone enabled (TEN=1,
DSQIN=High), I_OUT=0 mA
VSEL1=VSEL2=VSEL3=VSEL4=0
Output voltage total accuracy Valid at any V_OUT selected level
Line regulation
V_IN=8 to 16 V
Load regulation
I_OUT from 50 to 500 mA
Output current limiting
thresholds
RSEL = 16.2 kΩ
RSEL = 22 kΩ
I_SC
SS
SS
T13-18
T18-13
T_OFF
Output short-circuit current RSEL= 16.2 kΩ
Soft-start time
Soft-start time
Soft transition rise time
Soft transition fall time
Dynamic overload protection
OFF time
V_OUT from 0 to 13 V
V_OUT from 0 to 18 V
V_OUT from 13V to 18 V
V_OUT from 18V to 13 V
PCL=0, output shorted
T_ON
Dynamic overload protection
ON time
PCL=0, output shorted
A_TONE Tone amplitude
F_TONE
D_TONE
t_r, t_f
Eff _DC/DC
F_SW
Tone frequency
Tone duty cycle
Tone rise or fall time ⁽²⁾
DC-DC converter efficiency
DC-DC converter switching
frequency
DSQIN=High, EXTM=0, TEN=1
I_OUT from 0 to 500 mA
C_BUS from 0 to 750 nF
DSQIN=High, EXTM=0, TEN=1
I_OUT=500mA
UVLO
Undervoltage lockout
thresholds
UVLO threshold rising
UVLO threshold falling
V_LP
Low power diagnostic (LPD) ^VLP ^{threshold rising}
thresholds
V_LP threshold falling
20/28
Doc ID 022634 Rev 2
Min.
8
Typ.
12
6
Max. Unit
16 V
mA
10
1
-3.5
+3.5 %
40 mV
75 100
500
750
mA
350
550
350
mA
4
ms
6
ms
1.5
ms
1.5
ms
900
ms
T_OFF/10
0.55 0.675 0.8 V_PP
20
22
24 kHz
43
50
57 %
5
8
15 µs
93
%
440
kHz
4.8
V
4.7
7.2
V
6.7