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LT8253EUFDM 数据表(PDF) 3 Page - Analog Devices

部件名 LT8253EUFDM
功能描述  40V USB Type-C Power Delivery Buck-Boost Controller
PDF  20 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

LT8253EUFDM 数据表(HTML) 3 Page - Analog Devices

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LT8253/LT8253A
3
Rev. 0
For more information www.analog.com
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply
VIN Operating Voltage Range
l
4
40
V
VIN Quiescent Current
VEN/UVLO = 0.3V
VEN/UVLO = 1.5V
1
2.1
2
3
µA
mA
VOUT Voltage Range
l
1
25
V
Linear Regulators
INTVCC Regulation Voltage
IINTVCC = 20mA
4.8
5
5.2
V
INTVCC Current Limit
VINTVCC = 4.5V (LT8253)
VINTVCC = 4.5V (LT8253A)
80
110
110
145
160
190
mA
mA
INTVCC Undervoltage Lockout Threshold
Falling
3.44
3.54
3.64
V
INTVCC Undervoltage Lockout Hysteresis
0.24
V
VREF Regulation Voltage
IVREF = 100uA
1.96
2
2.04
V
VREF Current Limit
VREF = 1.8V
2
2.5
3.2
mA
Control Inputs
EN/UVLO Shutdown Threshold
0.3
0.6
1
V
EN/UVLO Enable Threshold
Falling
1.196
1.22
1.244
V
EN/UVLO Enable Hysteresis
13
mV
EN/UVLO Hysteresis Current
VEN/UVLO = 1.1V
VEN/UVLO = 1.3V
2
–0.1
2.5
0
3
0.1
µA
µA
VOUTEN Threshold
1
1.6
V
Error Amplifier
FB Regulation Voltage
l
0.985
1
1.015
V
FB Voltage Regulation Amplifier gm
660
µS
Current Comparator
Maximum Current Sense Threshold V(LSP-LSN)
Buck, VFB = 0.8V
Boost, VFB = 0.8V
35
35
50
50
65
65
mV
mV
Fault
FB Short Threshold
Falling
0.2
0.25
0.3
V
FB Short Hysteresis
30
50
70
mV
PGOOD Upper Threshold from VFB
Rising
8
10
12
%
PGOOD Lower Threshold from VFB
Falling
–12
–10
–8
%
PGOOD Pull-Down Resistance
100
200
Ω
SS Hard Pull-Down Resistance
VEN/UVLO = 1.1V
100
200
Ω
SS Pull-Up Current
VFB = 0.4V, VSS = 0V
12.5
µA
SS Pull-Down Current
VFB = 0.1V, VSS = 2V
1.25
µA
SS Fault High Threshold
1.7
V
SS Fault Low Threshold
0.2
V
Oscillator
Oscillator Frequency
VSYNC/SPRD = 0V, RT = 100kΩ (LT8253)
VSYNC/SPRD = 0V, RT = 59.0kΩ (LT8253A)
l
l
380
1900
400
2000
420
2100
kHz
kHz
SYNC/SPRD Clock SYNC Frequency
(LT8253)
(LT8253A)
150
600
650
2000
kHz
kHz
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VEN/UVLO = 1.5V unless otherwise noted.



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