L5953 Просмотр технического описания (PDF) - STMicroelectronics

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производитель

L5953

Multiple switching voltage regulator

STMicroelectronics 

L5953

Block diagram and electrical specifications

Table 5. Electrical characteristics (continued) (Tamb = 25°C, VDD = 14.4V)

Symbol

Parameter

Test condition

Min. Typ. Max. Unit

IRH

VCTth

VCThy

Reset output leakage

Delay comparator threshold

Delay comparator threshold

hysteresis

VRT = VSTBY

10 μA

0.5 x

VSTBY

180

mV

ICT1

Timing capacitor output source

current

7.5

μA

RCT2

Timing capacitor output pull-down

equivalent resistor

150

Ω

Table 6. Diagnostic parameters

Symbol

Parameter

HSD1W1

High side driver 1 overcurrent

warning activation

HSD1W2

High side driver 1 open load

warning activation

HSD1W2 High side driver 1 vdd short

TEST warning activation in test mode

HSD2W1

HSD2W2

High side driver 2 overcurrent

warning activation

High side driver 2 open load

warning activation

HSD2W3

High side driver 2 vdd short

warning activation in test mode

THW Thermal warning activation

IRQ - Interrupt request pin

IRQ-L

IRQ-H

IRQ low voltage

IRQ leakage

Test condition

Min. Typ. Max. Unit

1

A

HSD1 output voltage in test mode

3

V

HSD1 in test mode

measure VVDD-LIN-VHSD1

1 1.5 2

V

0.5

A

HSD2 output voltage in test mode

3

V

HSD2 in test mode

measure VVDD-LIN-VHSD1

1 1.5 2

V

145

°C

Io = 1mA

Virq = 5V

0.4 V

1 μA

Table 7. SPI interface

Symbol

Alt

Parameter

Test conditions

Min. Max. Unit

Recommended DC operating voltage

VSPI

Supply voltage for SPI I/O

Input parameters (Tamb = 25°C, f = 1MHz)

CIN

Input capacitance (D)

CIN

Input capacitance (others pins)

tLPF

Input signal pulse width

3

5.5

V

8

pF

6

pF

10

ns

11/31

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