Datasheet

Electrical characteristics LED7707
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4 Electrical characteristics
V
IN
= 12 V; T
J
= 25 °C and LDO5 connected to AVCC if not otherwise specified
(a)
a. Specification referred to T
J
from 0 °C to +85 °C. Specification over the 0 to +85 °C T
J
range are assured by
design, characterization and statistical correlation.
Table 5. Electrical characteristics
Symbol Parameter Test condition Min. Typ. Max. Unit
Supply section
V
IN
Input voltage range 4.5 36 V
V
BST
Boost section output voltage 36 V
V
LDO5
LDO output and IC supply
voltage
EN high
I
LDO5
= 0 mA
4.4 5 5.5 V
V
AVCC
I
IN,Q
Operating quiescent current
R
RILIM
= 51 kΩ, R
BILIM
= 220 kΩ,
R
SLOPE
= 680 kΩ
DIM tied to SGND.
1mA
I
IN,SHDN
Operating current in shutdown EN low 20 30 μA
V
UVLO,ON
LDO5 under voltage lock out
upper threshold
4.0 4.3
V
V
UVLO,OFF
LDO5 under voltage lock out
lower threshold
3.5 3.7
LDO linear regulator
Line regulation 6 V
≤ V
IN
≤ 36 V, I
LDO5
= 30 mA 30
mV
LDO dropout voltage I
LDO5
= 10 mA (-10 % drop) 80 120
LDO maximum output current
V
LDO5
> V
UVLO,ON
25 40 60
mA
V
LDO5
< V
UVLO,OFF
20 30
Boost section
t
ON,min
Minimum switching on-time 200 ns
f
SW
Default switching frequency FSW connected to AVCC 570 660 770
kHz
Minimum FSW sync frequency 220
FSW sync input low level 240
mVFSW sync input high level 350
FSW sync input hysteresis 30
FSW sync min ON time 270 %
SYNC output duty-cycle
FSW connected to AVCC
(Internal oscillator selected)
34 40 %
SYNC output high level I
SYNC
= 10 μA
V
AVCC
-20V
mV
SYNC output low level I
SYNC
= -10 μA 20