L6911 데이터 시트보기 (PDF) - STMicroelectronics
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L6911 Datasheet PDF : 7 Pages
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L6911
DESCRIPTION (continued)
(DAC) allows to adjust the output voltage from
1.3V to 2.05V with 0.05V binary steps and from
2.1V to 3.5V with 0.1V binary steps. The high pre-
cision internal reference, digitally trimmed, as-
sures the selected output voltage to within +/-1%.
Thanks to the window comparator system, the de-
vice provides excellent load transient perform-
ance. The high peak current gate drive affords to
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
VBOOT-VPHASE
Parameter
VCC to PGND
Boot Voltage
Input, Output or I/O Voltage
have fast switching to the external power mos,
performing an high efficiency. The L6911 assures
a fast protection against load overvoltage and
load overcurrent. An external SCR is triggered to
crowbar the input supply in case of overvoltage.
In case of output short circuit the soft start capaci-
tor is discharged and the system works in hiccup
mode.
Value
Unit
15
V
15
V
-0.3 to VCC+0.3
V
BLOCK DIAGRAM
VCC 12V
PGOOD
SS
OVP
RT
VD0
VD1
VD2
VD3
VD4
VCC
OCSET
MONITOR and
PROTECTION
OSC
D/A
+
-
+
PWM
-
E/A
BOOT
UGATE
PHASE
LGATE
PGND
GND
VSEN
VFB
Vin 5V
Vo
1.8V to 3.5V
D98IN957A
COMP
THERMAL DATA
Symbol
Rth j-amb
Tmax
Tstg
Parameter
Thermal Resistance Junction to Ambient
Maximum Junction Temperature
Storage Temperature Range
Value
110
150
-65 to 150
Unit
°C/W
°C
°C
RECOMMENDED OPERATING CONDITION
Symbol
VCC
Tamb
TJ
Parameter
VCC to PGND
Ambient Temperature Range
Junction Temperature Range
2/7
Value
Unit
5V ±10%/12V ±10%
V
0 to 70
°C
0 to 125
°C
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