L7983 datasheet(8/43 Pages) STMICROELECTRONICS

8 / 43 page

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

IQVBIAS

Quiescent current from VBIAS

LCM, VBIAS = 5 V, VOUT = 1.05 * VREF(2)

µA

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

-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

Synchronization (clock-in) and LNM/LCM

fCLKIN

Synchronization range

180

2400

kHz

VCLKINH

CLKIN allowed high level

VCLKINL

CLKIN allowed low level

1.3

VLNM

LNM selection level

VLCM

LCM selection level

1.3

TLNM/LCM

Minimum allowed delay between

LNM to LCM or LCM to LNM

dynamic selection

µs

Reset

VRSTTHR

RST release threshold

(VOUT/VREF)

TJ = 25 °C

-40 °C ≤ TJ ≤ 125 °C (3)

VRSTHYST

RST hysteresis

TRSTDLY

Delay from VRSTTHR threshold

detection and RST pin release

2.0

VRSTLOW

RST open collector output

VOUT/VREF = 80%, 4 mA sinking current

0.3

0.4

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)

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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