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L6911CTR 数据表(PDF) 4 Page - STMicroelectronics

部件名 L6911CTR
功能描述  5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
PDF  20 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6911CTR 数据表(HTML) 4 Page - STMicroelectronics

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L6911C
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ELECTRICAL CHARACTERISTCS (VCC = 12V, Tamb = 25°C unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VCC 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 VOCSET threshold
1.24
V
ISS
Soft start Current
10
µA
OSCILLATOR
Free running frequency
RT = OPEN
180
200
220
KHz
Total Variation
6 K
Ω < RT to GND < 200 KΩ
-15
15
%
∆Vosc
Ramp amplitude
RT = OPEN
1.9
Vp-p
REFERENCE AND DAC
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
SR
Slew-Rate
COMP=10pF
10
V/
µS
GATE DRIVERS
IUGATE
High Side Source
Current
VBOOT - VPHASE=12V,
VUGATE - VPHASE= 6V
1
1.3
A
RUGATE
High Side Sink
Resistance
VBOOT-VPHASE=12V,
IUGATE = 300mA
24
Ω
ILGATE
Low Side Source
Current
Vcc=12V, VLGATE = 6V
0.9
1.1
A
RLGATE
Low Side Sink
Resistance
Vcc=12V, ILGATE = 300mA
1.5
3
Ω
Output Driver Dead Time
PHASE connected to GND
120
ns
PROTECTIONS
Over Voltage Trip
(VSEN/DACOUT)
VSEN Rising
117
120
%
IOCSET
OCSET Current Source
VOCSET = 4.5V
170
200
230
µA
IOVP
OVP Sourcing Current
VSEN > OVP Trip, VOVP=0V
60
mA
POWER GOOD
Upper Threshold
(VSEN/DACOUT)
VSEN Rising
110
112
114
%
Lower Threshold
(VSEN/DACOUT)
VSEN Falling
86
88
90
%
Hysteresis
(VSEN/DACOUT)
Upper and Lower threshold
2
%
VPGOOD
PGOOD Voltage Low
IPGOOD = -5mA
0.5
V



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