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L6983 数据表(PDF) 8 Page - STMicroelectronics

部件名 L6983
功能描述  38 V, 3 A synchronous step-down converter with 17 μA quiescent current
PDF  63 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6983 数据表(HTML) 8 Page - STMicroelectronics

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5
Electrical characteristics
TJ = 25 °C, VIN = 24 V unless otherwise specified.
Table 6. Electrical characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VIN
Operating input voltage
range
3.5
38
V
VIN_H
VCC rising threshold
2.3
3.3
V
VIN_L
VCC UVLO falling
threshold
2.15
3.15
V
IPK (1)
Peak current limit
No slope contribution
4.1
4.6
A
Full slope contribution
3.1
3.6
A
IVY
Valley current limit
3.3
3.9
4.5
A
ISKIP (1) (2)
Skip current limit
0.6
A
IVY_SINK (1)
Reverse current limit
LNM or VOUT overvoltage
1.25
1.5
1.75
A
RDSON_HS
High-side RDSON
0.130
Ω
RDSON_LS
Low-side RDSON
0.85
Ω
TOFF_MIN
Minimum off-time
200
ns
TON_MIN
Minimum on-time
75
ns
Enable
VWAKE_UP
Wake-up threshold
Rising
0.7
V
Falling
0.2
V
VEN
Enable threshold
Rising
1.08
1.2
1.32
V
Hysteresis
0.2
V
VCC regulator
VCC
LDO output voltage
3.0
3.3
3.6
V
Power consumption
ISHTDWN
Shutdown current from
VIN
VEN = GND
2
3
μA
LCM device
IQ_VIN
Quiescent current from
VIN
VBIAS = GND
20
35
60
μA
VBIAS = 5 V
1
3.5
6
μA
IQ_VBIAS
Quiescent current from
VBIAS
VBIAS = 5 V
20
35
60
μA
LNM device
IQ_VIN
Quiescent current from
VIN
VBIAS = GND
1.6
2.3
3
mA
VBIAS = 5 V
300
550
800
μA
IQ_VBIAS
Quiescent current from
VBIAS
VBIAS = 5 V
1.3
1.8
2.3
mA
Soft-start
L6983
Electrical characteristics
DS13116 - Rev 1
page 8/63



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