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L6995 数据表(PDF) 4 Page - STMicroelectronics

部件名 L6995
功能描述  STEP DOWN CONTROLLER FOR HIGH DIFFERENTIAL INPUT-OUTPUT CONVERSION
PDF  25 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6995 数据表(HTML) 4 Page - STMicroelectronics

  L6995 Datasheet HTML 1Page - STMicroelectronics L6995 Datasheet HTML 2Page - STMicroelectronics L6995 Datasheet HTML 3Page - STMicroelectronics L6995 Datasheet HTML 4Page - STMicroelectronics L6995 Datasheet HTML 5Page - STMicroelectronics L6995 Datasheet HTML 6Page - STMicroelectronics L6995 Datasheet HTML 7Page - STMicroelectronics L6995 Datasheet HTML 8Page - STMicroelectronics L6995 Datasheet HTML 9Page - STMicroelectronics Next Button
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L6995
4/25
VREF=VSENSE OSC=500mV
380
430
480
ns
VREF=VSENSE OSC=1V
220
250
280
ns
VREF=VSENSE OSC=2V
120
150
180
ns
OFF TIME
TOFFMIN
Minimum off time
580
ns
KOSC/TOFFMIN
OSC=250mV
0.4
0.45
VOLTAGE REFERENCE
VREF
Voltage Accuracy
0
µA < IREF < 100µA
0.891
0.9
0.909
V
PWM COMPARATOR
Input voltage offset
-2
+2
mV
IFB
Input Bias Current
0.1
µA
CURRENT LIMIT AND ZERO CURRENT COMPARATOR
ILIM input bias current
ILIM to GND = 120KΩ
5
µA
KC
Current Limit factor
RILIM=120 KΩ
0.85
1
1.15
µA
PHASE-
GND
Zero Crossing Comparator offset
-2
2
mV
GATE DRIVERS
High side rise time
VDR=5V; C=7nF
HGATE - PHASE from 2 to 4.5V
50
70
ns
High side fall time
VDR=5V; C=7nF
HGATE - PHASE from 2 to 4.5V
50
70
ns
Low side rise time
VDR=5V; C=14nF
LGATE from 2 to 4.5V
50
70
ns
Low side fall time
VDR=5V; C=14nF
LGATE from 2 to 4.5V
50
70
ns
PGOOD UVP/OVP PROTECTIONS
OVP
Over voltage trip
with respect to VREF
112
115
118
%
UVP
Under voltage trip
66
69
72
%
PGOOD
Upper threshold
(VSENSE/VREF)
VSENSE rising
107
110
113
%
PGOOD
Lower threshold
(VSENSE/VREF)
VSENSE falling
86
89
92
%
VPGOOD
ISOURCE=2mA
0.14
0.2
V
INTEGRATOR
INT
Over Voltage Clamp
VSENSE = VCC
1.04
1.07
1.1
V
INT
Under Voltage Clamp
VSENSE = GND
0.82
0.84
0.86
V
VSENSE-
VREF
Integrator Input Offset Voltage
-5
5
mV
IVSENSE
Input Bias Current
0.1
µA
ELECTRICAL CHARACTERISTICS (continued)
(VCC = VDR = 5V; Tamb = 0°C to 85°C unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit



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