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參數(shù)資料
| 型號(hào)： | L6911D |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION |
| 中文描述： | 5位可編程降壓控制器采用同步整流 |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 233K |
| 代理商： | L6911D |
L6911D
4/17
ELECTRICAL CHARACTERISTCS
(V
CC
= 12V, T
amb
= 25°C unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
CC
SUPPLY CURRENT
Icc
Vcc Supply current
UGATE and LGATE open
5
mA
POWER-ON
Turn-On Vcc threshold
VOCSET=4.5V
4.6
V
Turn-Off Vcc threshold
VOCSET=4.5V
3.6
V
Rising V
OCSET
threshold
Soft start Current
1.24
V
I
SS
10
μ
A
OSCILLATOR
Free running frequency
R
T
= OPEN
6 K
< RT to GND < 200 K
R
T
= OPEN
180
200
220
KHz
Total Variation
-15
15
%
V
osc
REFERENCE AND DAC
Ramp amplitude
1.9
Vp-p
DACOUT Voltage
Accuracy
VID0, VID1, VID2, VID3, VID4
see Table1; Tamb = 0 to 70
°
C
-1
1
%
VID Pull-Up voltage
4
V
ERROR AMPLIFIER
DC Gain
88
dB
GBWP
Gain-Bandwidth Product
10
MHz
V/
μ
S
SR
Slew-Rate
COMP=10pF
10
GATE DRIVERS
I
UGATE
High Side Source
Current
V
BOOT
- V
PHASE
=12V,
V
UGATE
- V
PHASE
= 6V
1
1.3
A
R
UGATE
High Side Sink
Resistance
V
BOOT
-V
PHASE
=12V,
I
UGATE
= 300mA
2
4
I
LGATE
Low Side Source
Current
Vcc=12V, V
LGATE
= 6V
0.9
1.1
A
R
LGATE
Low Side Sink
Resistance
Vcc=12V, I
LGATE
= 300mA
1.5
3
Output Driver Dead Time
PHASE connected to GND
120
ns
PROTECTIONS
Over Voltage Trip
(V
SEN
/DACOUT)
OCSET Current Source
V
SEN
Rising
117
120
%
I
OCSET
I
OVP
POWER GOOD
V
OCSET
= 4.5V
V
SEN
> OVP Trip, V
OVP
=0V
170
200
230
μ
A
OVP Sourcing Current
60
mA
Upper Threshold
(V
SEN
/DACOUT)
Lower Threshold
(V
SEN
/DACOUT)
Hysteresis
(V
SEN
/DACOUT)
PGOOD Voltage Low
V
SEN
Rising
110
112
114
%
V
SEN
Falling
86
88
90
%
Upper and Lower threshold
2
%
V
PGOOD
I
PGOOD
= -5mA
0.5
V
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