L5951 データシートの表示（PDF） - STMicroelectronics

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L5951

Triple output multifunction voltage regulator for car radio with IDR/class2 interface

STMicroelectronics 

L5951

Electrical specifications

Table 6. Electrical characteristics (continued)

Symbol

Parameter

Test Condition

Min. Typ. Max. Unit

I4Xvih

I4Xvil

4X input current

4X = 5 VDC

4X = 0 VDC

0

A

0

A

LTrip1

LTrip2

LOOP input trip point voltages

Normal Mode

Loopback Mode

2

0.8

V

V

ILvih

ILvil

LOOP input current

LOOP = 5VDC

LOOP = 0VDC

0

A

VRXhigh RX output voltage, high

BUS = 7V, IRX = -200A

4.85

V

VRXlow

t(s) IRX

RX output voltage, low

RX output current

BUS = 0V, IRX = 1.6mA

RX = high (Short circuit

protection limits)

0.2

V

5

mA

uc VIH

rod VIL

P ISleepvih

ISleepvil

Sleep(1) input voltage

Sleep(1) input current

TX = 5VDC

Verify BUS > 3.725

Verify BUS < 4.025

Sleep* = 5VDC

Sleep* = 0VDC

2

V

0.8

V

0.2

A

0

A

lete AC characteristics for class 2 transceiver (Standard loads: IREG1 = 0.5mA, IREG2 = 0.5mA, IREG3 = 5mA)

bso BUSLTOH BUS voltage rise times

t(s) - O BUSHTOL BUS voltage fall times

Produc tWbus BUS pulse width distortion

solete V1 Spectral content limit

b (Measure spectral peak from

O V2 0.53MHz to 1.6MHz)

TX = 7.812Hz square wave

See Figure 1

Min and max loaded BUS

TX = 7.812Hz square wave

See Figure 1

Min and max loaded BUS

TX = 7.812Hz square wave

See Figure 2

Load BUS with 3.300pF and

1.38k

Measure @ 1.5V levels

Measure @ 6.25V levels

VBAT = 9V to 16V, no ground

offset, 0.53  f  1MHz.

VBAT = 9V to 16V, no ground

offset, 1  f  1.67MHz.

15

s

14

s

77

s

48

s

100

V

80

V

BUSDLY Propagation delay

Measure delay between TX trip

point and RX trip point

16

s

TX4XDLY

TXNormDL

Y

TX to BUS delay

Measure from 2.5V on TX to

3.875V on BUS

4X mode

Normal mode

3.5

s

14.5

s

DocID7510 Rev 2

11/18

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