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L7983 Datasheet(PDF) 8 Page - STMicroelectronics

Part # L7983
Description  60 V, 300 mA synchronous step-down switching regulator with 10 μA quiescent current
PDF  43 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L7983 Datasheet(HTML) 8 Page - STMicroelectronics

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Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
IQVBIAS
Quiescent current from VBIAS
LCM, VBIAS = 5 V, VOUT = 1.05 * VREF(2)
µA
37
50
LNM, VBIAS = 5 V, VOUT = 1.05 * VREF
1200
1400
Voltage reference and OVP
VREF
Voltage feedback, L7983PUR
TJ = 25 °C
0.844
0.850
0.856
V
-40 °C ≤ TJ ≤ 125 °C (3)
0.840
0.850
0.860
Voltage feedback, L7983PU33R
TJ = 25 °C
3.267
3.300
3.333
-40 °C ≤ TJ ≤ 125 °C (3)
3.250
3.300
3.350
Voltage feedback, L7983PU50R
TJ = 25 °C
4.950
5.000
5.050
-40 °C ≤ TJ ≤ 125 °C (3)
4.925
5.000
5.075
VOVP
Overvoltage trip (VOUT/VREF)
115
120
125
%
VOVP,HYST
Overvoltage hysteresis
2
%
Synchronization (clock-in) and LNM/LCM
fCLKIN
Synchronization range
180
2400
kHz
VCLKINH
CLKIN allowed high level
2
5
V
VCLKINL
CLKIN allowed low level
0
1.3
V
VLNM
LNM selection level
2
5
V
VLCM
LCM selection level
0
1.3
V
TLNM/LCM
Minimum allowed delay between
LNM to LCM or LCM to LNM
dynamic selection
14
µs
Reset
VRSTTHR
RST release threshold
(VOUT/VREF)
TJ = 25 °C
90
92
94
%
-40 °C ≤ TJ ≤ 125 °C (3)
88
96
VRSTHYST
RST hysteresis
2
TRSTDLY
Delay from VRSTTHR threshold
detection and RST pin release
2.0
ms
VRSTLOW
RST open collector output
VOUT/VREF = 80%, 4 mA sinking current
0.3
0.4
V
2 < VIN < VINH, 4 mA sinking current
0.5
0.8
IRSTLKG
RST leakage current
VIN = 60 V, VOUT/VREF = 110%
0.2
µA
Thermal shutdown
TSHDWN
Thermal shutdown threshold
(4)
165
°C
THYS
Thermal shutdown hysteresis
(4)
30
1. Parameter tested in static condition during testing phase. Parameter value may change over dynamic
application condition.
2. LCM enables SLEEP mode at light load.
3. Specifications in the -40 to +125 °C temperature range are assured by characterization and statistical
correlation.
4. Not tested in production.
L7983
Electrical characteristics
DS13354 - Rev 1
page 8/43



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