L9780 datasheet(47/56 Pages) STMICROELECTRONICS

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L9780

Electrical characteristics

RTOT maximum drop

|OUT voltage – SNS voltage|; design

information

1.8

RTOT range

Design information

300

Gain

ΔI (OUT pin) / (ΔV (C3 pin) * RTOT)

0.988

1.012

V/V

Max VCCS current

C3 voltage = 0V, RTOT = 0



C3 voltage = 5V, RTOT = 0



-20

-12

VCCS leakage current (evaluated

on OUT1, OUT2, SNS pins)

Bit VCCSEN = 0, OUT1 = OUT2 = SNS

= 0V, T = 150 °C

-5

μA

Bit VCCSEN = 0, OUT1 = OUT2 = SNS

= 5V, T = 150 °C

-5

Offset voltage

C3 voltage = REF2, VCCS offset voltage

= OUT voltage – SNS voltage

-0.7

0.7

Voltage clamp error, positive limit CL1 (CL2) voltage – SNS voltage

-25

Voltage clamp error, negative limit CL1 (CL2) voltage – SNS voltage

-50

Output impedance

100

kΩ

Common mode gain

C3 voltage fixed, SNS pin moved,

Δ(OUT voltage – SNS voltage) /

SNS

voltage

-2

mV/V

TG switch on resistance

Internal switch between TG and OUT

-4

VCCS pull-down resistance

kΩ

OUT differential current

OUT current = 0mA; OUT current

variation if SNS pin is moved from 0V to

-2 V or to 2.4 V

-7

μA

OUT current = ±12 mA; RTOT = 120Ω;

OUT current variation if SNS pin is

moved from 0 V to -2 V (I=12 mA) or to

2.4 V (I=-12 mA)

-40

OUT current = ±11 mA; RTOT = 97Ω;

OUT current variation if SNS pin is

moved from 0 V to -2 V (I=11 mA) or to

2.4 V (I=-11 mA)

-20

PG driver

PG pin output voltage

PG current = -10 μA

VCCA -0.1

VCCA

PG current = 10 μA

100

Pull-down resistor

130

kΩ

Heater FET driver

HG pin output voltage

PG current = -10 μA

VCCA -0.2

VCCA

PG current = 10 μA

100

Pull-down resistor

130

kΩ

Table 12. VCCS, PG1 (PG2) driver, Heater Fet driver

Parameter

Conditions

Min.

Max.

Unit

L9780 Datasheet(PDF) 47 Page - STMicroelectronics

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