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L6731B 数据表(PDF) 9 Page - STMicroelectronics

部件名 L6731B
功能描述  Adjustable step-down controller with synchronous rectification Dedicated to DDR Memory
PDF  24 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6731B 数据表(HTML) 9 Page - STMicroelectronics

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L6731B
Electrical characteristics
9/24
Table 5.
Thermal Characteristics (VCC = 12V)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Error Amplifier
REAREF
EAREF Input Resistance
Vs. GND
70
100
150
k
Ω
IFB
I.I. bias current
VFΒ = 0V
0.290
0.5
µA
Ext Ref
Clamp
2.3
V
VOFFSET
Error amplifier offset
Vref = 0.6V
-5
+5
mV
GV
Open Loop Voltage Gain
Guaranteed by design
100
dB
GBWP
Gain-Bandwidth Product
Guaranteed by design
10
MHz
SR
Slew-Rate
COMP = 10pF
Guaranteed by design
5V/
µs
Gate Drivers
RHGATE_ON High Side Source Resistance
VBOOT - VPHASE = 5V
1.7
Ω
RHGATE_OFF High Side Sink Resistance
VBOOT - VPHASE = 5V
1.12
Ω
RLGATE_ON Low Side Source Resistance
VCCDR = 5V
1.15
Ω
RLGATE_OFF Low Side Sink Resistance
VCCDR = 5V
0.6
Ω
Protections
IOCH
OCH Current Source
VOCH = 1.7V
90
100
110
µΑ
IOCL
OCL Current Source
90
100
110
µΑ
OVP
Over Voltage Trip
(VFB / VEAREF)
VFB Rising
VEAREF = 0.6V
120
%
VFB Falling
VEAREF = 0.6V
117
%
Power Good
Upper Threshold
(VFB / VEAREF)
VFB Rising
108
110
112
%
Lower Threshold
(VFB / VEAREF)
VFB Falling
88
90
92
%
VPGOOD
PGOOD Voltage Low
IPGOOD = -5mA
0.5
ϖ
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Output Voltage
VFB
Output Voltage
TJ = 0°C~ 125°C
0.596
0.6
0.605
V
TJ = -40°C~ 125°C
0.593
0.6
0.605
Table 4.
Electrical Characteristics



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